Lmu3g Install Na 2528

Finder™ Wireless Location System

3G LMU Installation Guide, North American

7221-2528-0000Release 12.0, Revision H

June, 2010

NOTICES

This document neither grants any license nor conveys any rights with respect to the subject matter hereof or otherwise. TruePosition expressly retains all intellectual and other property rights with respect to this document and all matters set forth herein.Some technical assertions of capability included herein are estimates based on limited information gathered from past experience.

WARRANTY

TruePosition provides this document and the equipment or software it refers to “as is” without warranty of any kind, express or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. In no event shall TruePosition be liable for any damages of any kind, arising out of, or related to the use or inability to use this document, even if you have been advised of the possibility of incurring damages therefrom.

CONFIDENTIALITY

This document and the information contained herein are the proprietary and confidential information of TruePosition, Inc. The information is provided under nondisclosure agreement, and may not be reproduced or used for purposes other than in accordance with that agreement.

TRADEMARKS

TruePosition and the TruePosition logo are registered trademarks of TruePosition, Inc. in the United States and other countries. Other marks containing TruePosition, such as the TruePosition Location Platform, are claimed as trademarks by TruePosition.

COPYRIGHTS

©2010 TruePosition, Inc. • All Rights Reserved.

IF YOU NEED HELP

• Contact the TruePosition Technical Assistance Center (TAC):

By email: [email protected]

By phone: 866.435.7957 (toll-free in North America) or +1 610.680.1100 (international)

• To obtain the most recent versions of product documentation, log in to the TruePosition Customer Access Web site at http://access.trueposition.com. The site also provides information about release compatibility for product documents.

http://access.trueposition.com

iii

Contents1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.2. Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.3. Additional Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21.4. Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.4.1. Special Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21.4.2. Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.4.3. Special Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.4.4. Page Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2. LMU FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.2. Front Panel Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2.1. Front Panel Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

3. LMU SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.2. Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23.3. Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23.4. Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33.5. RF Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43.6. Radiated Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

4. LMU PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14.2. Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2.1. ESD Protection During LMU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24.2.2. LMU Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34.2.3. LMU Return to True Position Logistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.3. Multicoupler Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44.4. Vital Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44.5. Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4.5.1. Mounting Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74.5.2. Cable Bend Radius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84.5.3. Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-94.5.4. Ground Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-94.5.5. Torque Ranges for Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-104.5.6. Multicoupler Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-104.5.7. GPS Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.6. Selecting Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-104.6.1. RF Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114.6.2. GPS Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114.6.3. GSM Downlink Antenna Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

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4.6.4. T1 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-124.7. Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

4.7.1. Vital Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-144.7.2. Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-144.7.3. Basic Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-164.7.4. Miscellaneous Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-194.7.5. Supporting Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

4.8. Final Pre-Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-204.9. Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

5. CHASSIS INSTALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1. Rack Mounting and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25.2. Wall Mount Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-55.3. RF Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.3.1. Uplink Antenna Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85.3.2. External Multi-band Downlink Antenna Cable Connections . . . . . . . . . . . . . . . . . . . . . . . 5-95.3.3. GPS Antenna Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-135.3.4. Connecting to an Existing, TruePosition Qualified GPS Antenna . . . . . . . . . . . . . . . . . . . 5-25

5.4. T1Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-275.4.1. T1 Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

6. POWER CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1. Ground and Power Cable Connection for New Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26.2. Ground and Power Cable Connection for 2G LMU Replacement . . . . . . . . . . . . . . . . . . . . . . 6-56.3. Power On the LMU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

7. DETERMINING THE GSM DOWNLINK ANTENNA CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . 7-1

8. CONFIGURATION AND TEST OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1. Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

9. SETTING UP THE PROCOMM CONSOLE INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1. The ProComm Chat Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29.2. Standard Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29.3. Operating Following A Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

9.3.1. Reset without a T1 Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39.3.2. Reset without a GPS Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

10. SET UP STRAPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

10.1. Set the T1 Strapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-110.2. Set E1 Strapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-310.3. Verify the SMLC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

11. SET GPS PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

11.1. Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-111.2. GPS Antenna Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

11.2.1. Set-Up and Configuring the GPS Handheld Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

v

11.2.2. Finding and Entering Longitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-211.2.3. Finding and Entering Latitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-211.2.4. Finding and Entering Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

11.3. Set the GPS Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-311.4. Verify GPS Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6

12. POWER MEASUREMENT TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

12.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-112.2. Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-212.3. BIT 6 Command Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-512.4. BIT 6 Test Results Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-912.5. BIT 6 Test Evaluation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-10

13. PERFORM THE DSP AND CP MEMORY TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

13.1. Test The DSP Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-113.1.1. BIT 4 Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-113.1.2. Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-113.1.3. Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-2

13.2. Test The CP Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-213.2.1. BIT 5 Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-213.2.2. Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-313.2.3. Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3

14. GSM DOWNLINK ANTENNA TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

14.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-114.2. GSM Downlink Antenna Power Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-114.3. GSM Beacon Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-114.4. System Level Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-3

15. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1

15.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-115.2. Common Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-115.3. Problem Detection and Correction of Common Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-2

15.3.1. LMU Node Unreachable Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-215.3.2. GPS Antenna Failure Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-315.3.3. GPS Holdover Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-715.3.4. GPS Timing Anomaly Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-815.3.5. Fan Failure Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-9

15.4. Assessing LMU Checkout Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1015.4.1. Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-10

15.5. Diagnosis of LMU Checkout Failures and Recommended Actions . . . . . . . . . . . . . . . . . . . . 15-1115.5.1. LED Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1115.5.2. Console Port Alarm Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1315.5.3. Failure Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1315.5.4. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-13

vi

15.5.5. Recommended Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1315.5.6. Fault Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1315.5.7. Sub Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-31

15.6. Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3115.6.1. Troubleshoot the Uplink RF Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3115.6.2. Check Faulty RF Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3215.6.3. Troubleshoot the GPS Antenna Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3315.6.4. Troubleshoot the GSM Downlink Antenna Beacon Search Test Failure . . . . . . . . . . . . 15-3515.6.5. Correcting T1 Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3715.6.6. Local Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3815.6.7. Correcting Strapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4015.6.8. Test for Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4015.6.9. GPS Self-survey Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-42

15.7. Remove and Replace Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4215.7.1. Retrieving Strapping and GPS Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4315.7.2. Remove Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4415.7.3. Remove the Mounting Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4515.7.4. Wall Mount Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4615.7.5. Replace the LMU in its Mounting Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4715.7.6. Replace Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-47

APPENDIX A. PART NUMBER CROSS-REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

APPENDIX B. CONSOLE PORT USER GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

APPENDIX C. CABLE SELECTION TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

APPENDIX D. SURGE PROTECTOR (EMP) CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

vii

FiguresFIGURE 2-1: 3G LMU FRONT PANEL 2-1

FIGURE 4-1: AIR SPACE CLEARANCES 3G LMU 4-8

FIGURE 4-2: SELECTING RF CABLES 4-11

FIGURE 4-3: SHIELDED CAT-5 T1 CROSS-OVER CABLE PIN-OUT CONVENTION 4-13

FIGURE 5-1: 23-INCH MOUNTING FLANGES 5-2

FIGURE 5-2: LMU WITH MOUNTING FLANGES ATTACHED 5-3

FIGURE 5-3: SIDE PANEL REFERENCE MARKS 5-4

FIGURE 5-4: RACK MOUNTING 5-5

FIGURE 5-5: WALL MOUNT CONFIGURATION 5-7

FIGURE 5-6: LMU FRONT PANEL CONNECTIONS 5-8

FIGURE 5-7: SURGE PROTECTOR 5-10

FIGURE 5-8: SURGE PROTECTOR MOUNTING BRACKET 5-10

FIGURE 5-9: RIGHT ANGLE QMA CONNECTOR 5-13

FIGURE 5-10: GPS ANTENNA CABLE CONNECTION WITH NO INLINE AMPLIFIERS 5-14

FIGURE 5-11: GPS ANTENNA 5-15

FIGURE 5-12: COMBINED GPS & MULTI-BAND DOWNLINK ANTENNA BASE 5-16

FIGURE 5-13: SURGE PROTECTOR FOR PLR-06-1720-00 5-17

FIGURE 5-14: GROUND LUG 5-18

FIGURE 5-15: SMA CONNECTOR 5-19

FIGURE 5-16: GPS ANTENNA CABLE CONNECTION WITH ONE INLINE AMPLIFIER 5-20

FIGURE 5-17: GPS ANTENNA TO INLINE AMPLIFIER CONNECTION 5-22

FIGURE 5-18: N-TYPE CONNECTOR 5-24

FIGURE 5-19: EXISTING GPS ANTENNA CABLE CONNECTION 5-25

FIGURE 6-1: LMU MATE-N-LOC POWER CONNECTOR AND CRIMP PINS 6-2

FIGURE 6-2: SAMPLE LMU POWER CABLE 6-3

FIGURE 6-3: GROUND WIRE CONNECTION 6-4

viii

FIGURE 6-4: POWER ADAPTER CABLE 6-6

FIGURE 6-5: GROUND WIRE CONNECTION 6-7

FIGURE 9-1: LMU CONSOLE PORT 9-1

FIGURE 11-1: LMU T1 AND CONSOLE PORTS 11-3

FIGURE 12-1: FUNCTION OF RF PATH TEST 12-2

FIGURE 12-2: 3G LMU UPLINK PORT LOCATIONS 12-5

FIGURE 15-1: TROUBLESHOOTING THE GPS PATH USING THE TRIMBLE UNIT 15-33

FIGURE 15-2: REMOVE THE FRONT PANEL CONNECTIONS 15-44

FIGURE 15-3: RACK MOUNTING 15-46

FIGURE 15-4: WALL-MOUNTED LMU 15-47

FIGURE B-1: 3G LMU CONSOLE PORT CABLE WIRING DIAGRAM B-2

FIGURE B-2: PROCOMM CHAT WINDOW B-4

FIGURE B-3: LMU FRONT PANEL CONNECTIONS B-6

FIGURE B-4: TERMINAL WINDOW MENU BAR B-9

FIGURE B-5: SEND FILE DIALOG BOX B-9

FIGURE B-6: SENDING FILE STATUS BAR B-10

FIGURE B-7: LMU ESNS B-11

FIGURE B-8: TERMINAL WINDOW MENU BAR B-11

FIGURE B-9: SENDING FILE USING -- RAW ASCII B-11

FIGURE B-10: SENDING FILE STATUS BAR B-12

FIGURE D-1: SURGE PROTECTOR D-1

FIGURE D-2: COMBINED MOUNTING OF DOWNLINK AND GPS SURGE PROTECTORS D-2

FIGURE D-3: TWO-BOLT BULKHEAD INSTALLATION D-2

FIGURE D-4: SINGLE BOLT INSTALLATION D-3

FIGURE D-5: WALL MOUNT D-3

FIGURE D-6: THROUGH-HOLE MOUNT D-4

FIGURE D-7: GROUNDING D-4

ix

TablesTABLE 1-1: ADDITIONAL DOCUMENTS 1-2

TABLE 1-2: SPECIAL TEXT CONVENTIONS 1-2

TABLE 2-1: FRONT PANEL DESCRIPTION 2-2

TABLE 3-1: ENVIRONMENTAL SPECIFICATIONS 3-2

TABLE 3-2: INPUT POWER REQUIREMENTS 3-2

TABLE 3-3: PHYSICAL SPECIFICATIONS 3-3

TABLE 3-4: RF INPUT PERFORMANCE SPECIFICATIONS 3-4

TABLE 4-1: VITAL INFORMATION 4-4

TABLE 4-2: MINIMUM AIR GAP CLEARANCE REQUIREMENTS 4-7

TABLE 4-3: CABLE BEND RADIUS CONSTRAINTS 4-8

TABLE 4-4: POWER CABLE WIRE GAUGE SELECTION 4-9

TABLE 4-5: TORQUE RANGES FOR FASTENERS 4-10

TABLE 4-6: GPS CABLE TYPE AND LENGTH 4-12

TABLE 4-7: T1 CABLES 4-13

TABLE 4-8: VITAL EQUIPMENT 4-14

TABLE 4-9: TEST EQUIPMENT 4-15

TABLE 4-10: BASIC TOOLS 4-16

TABLE 4-11: MISCELLANEOUS EQUIPMENT 4-19

TABLE 4-12: SUPPORTING EQUIPMENT 4-20

TABLE 10-1: SET T1 STRAPPING VARIABLES 10-2

TABLE 10-2: SET E1 STRAPPING VARIABLES 10-3

TABLE 11-1: STATUS MESSAGE 11-7

TABLE 11-2: STATUS MESSAGE HEADINGS 11-7

TABLE 12-1: TROUBLESHOOTING TEST RESULTS 12-4

TABLE 12-2: PORT GAIN COMMAND PARAMETERS 12-5

TABLE 12-3: VERIFY PORT GAIN COMMAND PARAMETERS 12-6

x

TABLE 12-4: PORT ACTIVATION COMMAND PARAMETERS 12-6

TABLE 12-5: VERIFY PORT ACTIVATION COMMAND PARAMETERS 12-6

TABLE 12-6: BIT 6 COMMAND PARAMETERS 12-6

TABLE 12-7: GENERIC BIT 6 COMMANDS 12-7

TABLE 12-8: POWER MEASUREMENT TEST (BIT 6) RESULTS LOG 12-9

TABLE 15-1: TROUBLESHOOTING TABLE - APPLICATION FAILURES 15-15

TABLE A-1: PART NUMBER CROSS-REFERENCES A-1

TABLE B-1: PROCOMM PLUS SETTINGS B-2

TABLE B-2: SOFTWARE DOWNLOADING SEQUENCE B-5

TABLE B-3: SATELLITE INFORMATION B-14

TABLE B-4: STANDARD COMMANDS B-15

TABLE B-5: ENGINEERING COMMANDS B-23

TABLE C-1: CELLULAR (850 MHZ) RF CABLE SELECTION CHART C-2

TABLE C-2: AWS (1700 MHZ) AND PCS (1900 MHZ) RF CABLE SELECTION CHART C-16


7221-2528-0000 • Release 12.0 • Revision H • Confidential and Proprietary 1-1

1 INTRODUCTION

1.1 Purpose

This manual describes installation, configuration and troubleshooting for the TruePosition’® 3G LMU and other supporting TruePosition equipment deployed at the cell site. Additional information is provided in Section 6.2: Ground and Power Cable Connection for 2G LMU Replacement to support migrating from a 2G LMU to a 3G LMU.

NOTELMU power is disconnected by removing the DC power plug from the left front panel of the LMU.

NOTE

Refer to Appendix A: Part Number Cross-References when ordering parts or kits.

1.2 Audience

This document is intended for deployment and installation staff tasked with installing, or supervising the installation of, LMU’s in carrier cell towers. Once installed, LMU’s will convert voice signals into digital signals for SMLC processing into actual caller locations.

!CAUTION

The LMU is susceptible to Electrostatic Discharge (ESD). It is extremely important that you read, understand, and follow the ESD procedures:•Prior to opening an LMU box

•While handling the LMU

Strict compliance with the ESD procedures is a requirement. The ESD procedures are located in Section 4.2: Electrostatic Discharge.


1-2 Confidential and Proprietary • 7221-2528-0000 • Release 12.0 • Revision H

1.3 Additional Documents

Material from these additional documents is needed to complete some of the tasks in this document.

1.4 Document Conventions

This section describes the conventions and symbols used in this document.

1.4.1 Special Text

The following conventions are used to highlight certain kinds of text.

Table 1-1: Additional Documents

Title Author

GPS Self-Survey Operations Manual TruePosition

GPS and Multi-Band Downlink Antenna Installation Guide TruePosition

Alarm Correlation Guide TruePosition

SCOUT Application Reference Guide TruePosition

Table 1-2: Special Text Conventions

Special Text

Use Format Examples

User Input: Commands

Information typed by the user, typically in a command window

Bolded monospaced characters

Type cd /homeR

User Input: Variable Data

Placeholder for IP addresses, passwords, dates, or other system data that the user must include in a command

<Bolded monospaced characters in angle brackets>In regular text: <Text in angle brackets>

Type <EMS_IP_Address>R

The <EMS_IP_Address> is listed in the Vital Information table.

User input: Keyboard Symbols

Keys to be pressed by the user, typically in a command window

Images of keys on the keyboard

R

C

S 4

Command Window Text

Prompts or responses displayed in a command window

Monospaced characters

Password:

Download Complete!



1.4.2 Commands

If the command to be typed does not fit on a single line of the page in this document, the text is continued on the next line. Ignore these line breaks; press the Enter key only when you see the R symbol.

For example:

Type ps -ef | egrep -i“gnome-settings-daemon|bonobo-activation-server|gnome-terminal|gconf”R

1.4.3 Special Alerts

The following alerts are used in this document:

NOTENotes provide information that helps users make a decision or perform a step in a procedure.

Graphical User Interface (GUI) Text

Information shown in a GUI window (e.g., SCOUT or EMS application). Titles of windows, buttons, field names

Bolded characters Click the Yes button in the Do you want to Continue pop-up window.

!CAUTION

Cautions indicate conditions that may cause problems if procedures are not completed correctly. These problems may:•Require significant extra time or effort to correct

•Affect service

•Cause delays in completing the overall procedure

WARNING

Warnings indicate the presence of a hazard that must be avoided because it can cause:•Death or severe personal injury

•Significant service outages

•Damage to equipment

•Loss of critical data

Follow the instructions in a Warning and the procedure that follows carefully.

Table 1-2: Special Text Conventions

Special Text

Use Format Examples



1.4.4 Page Layout

This document is designed for double-sided printing. Each major section begins on a right-hand page, and a blank page may appear at the end of a section.



2 LMU FRONT PANEL

2.1 Introduction

3G LMU base station connections include power, ground, GPS antenna, multicoupler port, downlink antenna ports and data connections. The RF uplink ports usually connect to the carrier’s existing RF multicoupler ports to receive the same wide band RF signals that are received by the base transceiver station (BTS). The LMU T1 often connects to the carrier’s existing drop & insert (D&I) unit. The tri-band LMU includes the ANSI defined Cellular (850 MHz), AWS (1700 MHz) and PCS (1900 MHz) ports. 3 G LMUs have caps covering unused ports.

2.2 Front Panel Description

The front panel connections on the 3G LMU are different from those found on the legacy LMU models. Figure 2-1 illustrates the 3G LMU front panel.

Figure 2-1: 3G LMU Front Panel



2.2.1 Front Panel Objects

This section provides a brief description of the LMU front panel objects, including controls, indicators and connections. Refer to Table 2-1 for a description of LMU front panel elements.

Table 2-1: Front Panel Description

Panel Element Description

DC Power Connection

A three-pin connector provides power to the LMU. This port can be connected to either DC-C or DC-I battery returns. Polarity conventions must be followed for power connections. Polarity markings are located on the front panel.

DC Power LEDs •PWR - This LED is yellow if the output voltage is out of spec. If this LED is red, it indicates an over temperature condition, with output power shut off. Otherwise it is green.

•REV - This LED is red if the polarity of the DC power input reversed. Otherwise it is not lit.

T1/E1 Connection An eight-pin RJ45 connector on a shielded CAT-5 cable provides the T1 connection from the LMU to a BTS or a drop and insert (D&I) unit. This connector has a blue outline around it.

The D&I function may be part of the BTS, or it may be a separate unit. D&I units are typically customer furnished equipment (CFE) at the base station. The D&I function routes data to and from the SMLC. The SMLC is typically collocated with the BSC or MSC.

Connecting the LMU to the BTS or D&I unit provides the backhaul function to the SMLC.

AEP Connection A six-pin high-density RJ11 connector (RS232):

•Presently used for the Console port.

Ethernet Port Connection

An eight-pin RJ45 connector on a shielded CAT-5 cable allows this port is used by TruePosition engineering. Two eight-pin RJ45 connectors provide Ethernet connections.

Ethernet LEDs Each Ethernet RJ45 connection has two LEDs. One indicates a physical connection and one indicates a logical link.

GPS Antenna Connection

An SMA connector provides this connection. DC power for the GPS antenna is provided from the LMU GPS receiver via this connection. The LMU contains a GPS receiver designed to obtain precise timing signals. These signals are used to synchronize all LMUs across the network to a common time and frequency reference.

Cellular (850 MHz) RF Uplink Connection (where applicable)

Band 1 - QMA connectors provide this connection for up to six 850 MHz uplink antenna ports (3 sectors).



AWS (1700) RF Uplink Connection (where applicable)


PCS (1900) RF Uplink Connection (where applicable)


Downlink Antenna Ports

Three QMA connectors are present on the LMU for downlink antenna connections. At present, all downlink antenna connections are made on the single broadband port “DL1”.

1 PPS Connection A QMA connection provides a buffered one Pulse Per Second (PPS) output by the LMU GPS receiver.

10 MHz Connection

A QMA connection provides a buffered 10 MHz output by the LMU GPS receiver.

Reset Button Pressing the Reset button re-starts the LMU.

Status/Alarm LEDs Three LEDs display status and alarm conditions:

•ALARM - This LED is red if the LMU is in critical alarm, and not participating in locations. This LED is yellow if the LMU is in alarm, but participating in locations. Otherwise it is green.

•STATE - This LED red if the LMU is in the failed condition due to a critical alarm. This LED is yellow if the LMU is in a degraded condition. Otherwise it is green.

•GPS - This LED is red if the holdover duration is more than one half hour, or if currentValues.gps_failures is non-zero. This LED is yellow if the holdover duration is non-zero but less than one half hour and currenValues.gps_failures is zero. This LED will blink red if there is a standing antenna fault. This LED is green if none of the above conditions apply.

NOTEIf any of the LED failure or caution conditions persist after a reset, there is a problem that needs to be corrected. The GPS receiver is not reset by an LMU reset.

USB port Connection

A four-pin mini-USB connector provides this connection. Intended for future Console connection.

Table 2-1: Front Panel Description

Panel Element Description





3 LMU SPECIFICATIONS

3.1 Introduction

This section contains 3G LMU specifications, including electrical requirements, dimensions, RF input, radiated emissions, and radiated immunity.

NOTEThis equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and receiver.

-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help.

NOTELMU specifications are given in metric units in the tables of this section, where applicable. However, most tools and parts are specified in Imperial or SAE units for the North American version, and these remain in the original units throughout this document.



3.2 Environmental

The LMU is designed for use in environmentally controlled, sheltered indoor environments. If installed outdoors, a suitable, environmentally controlled enclosure must be provided and it is the customer’s responsibility to ensure the enclosure meets both the specifications in Table 3-1 and the requirements in the Network Equipment Building System (NEBS) GR-63-Core specification.

*Short-term refers to a period not to exceed 96 consecutive hours and a total of not more than 15 days in one year. This refers to a total of 360 hours in any given year, but not more than 15 occurrences during a 1-year period.

**Outside the non-destructive temperature range (from -10ºC to 70ºC), the LMU stops operating. When conditions return to a temperature within its operational range, the LMU automatically restarts with no degradation of performance.

3.3 Electrical

Table 3-2 summarizes LMU input power requirements.

Table 3-1: Environmental Specifications

Condition Specification

Temperature •Normal operation occurs from +5º C to +50º C

•Short-term operation* occurs from -5º C to +65º C

•The non-destructive** range is -10º C to +70º C

•Temperature transition less than or equal to 30º C per hour

Humidity 5% to 90% Relative Humidity, non-condensing.

Vibration Specification Equipment is designed and tested to meet NEBS GR-63-Core standards.

Shock Specifications Equipment is designed and tested to meet NEBS GR-63-Core standards.

Table 3-2: Input Power Requirements

Nominal Voltage

Nominal Voltage Range

Maximum Current

Fuse/Circuit Breaker

24 VDC 22 / 28 VDC 6A 10A

-48 VDC -40.5 / -57 VDC 3A 5A (a 10 AMP Fuse or Circuit Breaker is acceptable)



NOTEShort circuit and over voltage protection must be provided by an external circuit breaker or fuse. For example, use an Airpax, LMLB1-1-52-10.0-1-91-V circuit breaker (rated 10 amperes, 65VDC) or a Bussmann -- GMT – 10A fuse (rated 10 amperes, 60VDC) for a 24 VDC supply. Or use an Airpax, LMLB1-1-52-5.0-1-91-V circuit breaker (rated 5 amperes, 65VDC) or a Bussmann -- GMT – 5A fuse (rated 5 amperes, 60VDC) for a 48 VDC supply. Equivalent circuit breakers and fuses can be used. Confirm that the substitute meets the all agency requirements.

NOTEPolarity conventions must be followed when connecting power to the LMU front panel power connector. The minimum operating voltage for a 24 volt supply is 22 V. The minimum operating voltage for a -48 volt supply is -40.5 V.

NOTEThe battery return can be either DC-C or DC-I.

3.4 Dimensions

Table 3-3 contains the physical specifications of the LMU.

Table 3-3: Physical Specifications

Physical Characteristic

Specification

Width 19.0 inches

Height 1.75 inches

Depth 16.5 inches

Weight 12.0 pounds



3.5 RF Input

Table 3-4 provides LMU RF input performance specifications.

3.6 Radiated Emissions

LMU radiated emissions comply with the following standards:

• FCC, CFR CH47, Part 15B, Class-B (radiated and conducted)

• NEBS GR-1089

• European (EN) 55022

Table 3-4: RF Input Performance Specifications

Parameter Specification Comment

Receive Frequency Range:

Cellular (850 MHz) 824 to 849 MHz (uplink)

869 to 894 MHz (downlink)

AWS (1700 MHz) 1710 to 1755 MHz (uplink)


PCS (1900 MHz) 1850 to 1915 MHz (uplink)


RF Uplink Input Signal Power Level

-120 dBm to -22 dBm

Input Impedance 50 ohm Nominal

Receiver Channel-to-Channel Isolation

60 dB Minimum



4 LMU PRE-INSTALLATION

4.1 Overview

This section contains LMU pre-installation requirements for mounting in a shelter, inside a base station cabinet, or any other environmentally controlled room or tenant improvement.

NOTEIf a cell site is employing multiple LMUs, the GPS antenna can be shared using a TruePosition approved splitter.

4.2 Electrostatic Discharge

Electrostatic Discharge (ESD) is a rapid discharge of static electricity, which can damage Electrostatic Discharge Sensitive (ESDS) devices. ESD protection is used to prevent the occurrence of an ESD event. Follow these instructions to protect the LMU from ESD as outlined below.

WARNING

The intra-building port(s) of the equipment or subassembly is suitable for connection to intra-building or unexposed wiring or cabling only. The intra-building port(s) of the equipment or subassembly MUST NOT be metallically connected to interfaces that connect to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE, Issue 4) and require isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring.



4.2.1 ESD Protection During LMU Installation

Prior to Unpacking the LMU for Installation

1. Read and understand this ESD procedure prior to removing the LMU from the shipping box.

2. Carefully remove the LMU from the shipping box.

3. Remove the ESD packing foam, and the ESD bag.

LMU Installation

1. Follow the installation instructions in Section 5: Chassis Install to install the LMU into a BTS rack, external rack or wall mount that has been grounded to an external ground bar.This will insure that the LMU is properly grounded in the rack or wall mount.

2. At that point, the QMA connector caps can be removed for the ports required at each site after the LMU casing or chassis is grounded.

!CAUTION

This procedure must be performed for each LMU installation and LMU removal.

When handling sensitive electronic equipment, such as an LMU, always use a grounding strap and follow any model-specific instructions to minimize the risk of an ESD event.

!CAUTION

Make sure a grounding strap is available and is being properly used before proceeding.

!CAUTION

Do not remove the QMA connector caps for the ports required at each site until after the LMU casing or chassis is properly grounded.



3. Retain the connector port caps, ESD bag, and foam in case they are needed for repackaging the LMU.

NOTEFor warranty purposes, the LMU RMA units must be received from the field with all of the appropriate ESD protective packing (caps, bags, foam), and in an LMU box.

4.2.2 LMU Removal

1. For LMU removal, always disconnect the RF cabling from the LMU side first.

2. Replace the connector port caps on LMU ports prior to removing power, TELCO, RF connections and LMU casing or chassis grounding.

3. Remove the LMU from the rack or wall mount.

4. Place the LMU into the ESD protective bag and store it in the ESD packing foam and protective cardboard box.

4.2.3 LMU Return to True Position Logistics

Mark the LMU shipping box with the RMA Number and the LMU Serial Number, and return it according to instructions from the TruePosition Technical Assistance Center.

!CAUTION

Always connect RF cabling to BTS ports to provide ground, prior to making connections to LMU ports.

!CAUTION

Make sure a grounding strap is available and is being properly used before proceeding.



NOTETP will provide packing materials and boxes to the customer for this purpose in accordance to the customer contract.

4.3 Multicoupler Survey

When adding an LMU to a cell site, it must be determined whether the multicoupler has enough RF ports to connect the LMU. If the multicoupler does not have enough ports, obtain a new multicoupler, or use directional couplers to split the RF signal so the LMU ports can be connected.

4.4 Vital Information

Table 4-1 identifies vital information that must be determined by the carrier before carrying out a new LMU installation.

Table 4-1: Vital Information

Data Description Value

LMU chassis installation Determine if the LMU installation includes a 19-inch rack or a 23-inch rack.

TruePosition GPS Antenna Determine if the LMU installation includes a pre-installed TruePosition GPS antenna.



GPS mounting Determine mounting location and which GPS mounting option is best for maximizing sky view and minimizing signal blockage. See the GPS and Multi-Band Downlink Antenna Installation Guide for more information. The following outdoor options are available:

•Ladder Ice Bridge

•Grated Steel Ice Bridge

•Pole

•Wall

•Shelter Mount

•With GSM Downlink Antenna

•Telco outdoor enclosure such as Ericsson 2102 or 2106

•Tower Mount

•NOTE: Ensure that the GPS antenna has adequate sky view (75% unobstructed)

Telco Interface type Determine if the LMU installation includes a Telco T1.

Information for T1 Interfaces Only

•Telco Interface data-rate (T1)

Determine the data rate for the Telco interface (56K or 64K).

0 = 56K

1 = 64K

•Telco Interface frame type (T1)

Determine the framing for the Telco interface (D4 or ESF).

0 = ESF1 = D4

•Telco Interface line code (T1)

Determine the line coding for the Telco interface (B8ZS or AMI).

0 = B8ZS1 = AMI

•DS0 timeslot used (T1) Determine the correct time slot for the Telco interface.

•NOTE: T1 LMU DS0 timeslots are numbered from 0 to 23. If the telco interface device is numbered from 1 to 24, take care not to confuse the timeslots.

Configure the LMU for one time slot only.

•NOTE: If more than one timeslot is configured, the LMU will not communicate with the SMLC.

0 to 23





Power Determine if the LMU installation includes a +24 VDC or-48 VDC cell site power source.

GPS antenna Latitude, Longitude and Altitude

Determine the latitude, longitude and altitude values for configuring the LMU GPS antenna position.

GSM downlink antenna mounting

Determine the antenna, mounting configuration, and location for the GSM downlink antenna. Mounting requirements vary depending on the antenna specified. See Section 7: Determining the GSM Downlink Antenna Configuration for mounting selection and refer to the GPS and Multi-Band Downlink Antenna Installation Guide for more information.

The GSM antenna can be mounted based on the following options:

•On the GPS antenna mounting Pole

•On the Ice bridge

•On the shelter

•On top of the customers rack inside the shelter

•Tower mount

Network interface type for additional LMUs

T1 0 = T1

Network interface framing for additional LMUs

T1: ESF or D4 0 = ESF

1 = D4

Network interface line coding for additional LMUs

T1: AMI or B8ZS 0 = B8ZS

1 = AMI

Network interface line speed for additional LMUs

T1: 56K or 64K 0 = 56K

1 = 64K

Network interface DS0 to be used by additional LMUs

N/A 0 to 23





4.5 Constraints

This section contains pre-installation constraints for mounting and cabling.

4.5.1 Mounting Constraints

This section contains constraints for bonding, grounding, and air gap clearances.

Bonding and Grounding

Install the LMU in a rack that has been grounded in accordance with GR-1089-CORE, Section 9.0 Bonding & Grounding.

Air Gap Clearances

LMU air gap clearances for the front, right, and left side are maintained by the installer during the mounting process. Rear-panel air gap guards maintain the LMU rear clearance.

Table 4-2 defines the mounting constraints required to maintain proper air gap distances for the LMU:

Figure 4-1 illustrates the minimum air gap clearances (dimensions are in inches).

RF antenna Latitudes and Longitudes for additional LMUs

N/A

Table 4-2: Minimum Air Gap Clearance Requirements

LMU Location Clearance

Front panel 1.75 inches

Right and Left sides 1.0 inches

Rear panel 0.5 inches





Figure 4-1: Air Space Clearances 3G LMU

4.5.2 Cable Bend Radius

Do not bend RF, GPS, GSM downlink, power, and ground cables tighter than the radius specified in Table 4-3.

Table 4-3: Cable Bend Radius Constraints

Application Cable Type Bend Radius

RF Andrew CNT-240-FR 2.4 inches min

FSJ2 1.0 inches min

GPS Andrew CNT-240-FR 2.4 inches min

FSJ2 1.0 inches min



4.5.3 Power Cables

NOTEDC wiring and ground wire shall meet UL 1015, CSA TEW-105 105°C, RoHS COMPLIANT, 600 VOLT. Wire size shall be a minimum of 14AWG.

Determine the wire gauge for the power cables based on the voltage and the length of the cable. Table 4-4 defines the power cable options.

NOTEHardware such as cables and connectors can vary from cell site to cell site. These variations depend on existing cell site equipment as well as cell site geographical layout.

4.5.4 Ground Cables

Ground cables must be 12 AWG copper wire. The ground wire must be as short as possible. Ground strap should be a few inches and tied off to the rack.

GSM downlink Andrew CNT-240-FR 2.4 inches min

FSJ2 1.0 inches min

Power 3 mm2 (14 AWG) copper 0.71 inches min

Ground 5 mm2 (12 AWG) copper 0.82 inches min

20 mm2 (6 AWG) copper 1.85 inches min

Table 4-4: Power Cable Wire Gauge Selection

VoltageMaximum Current

Maximum Cable Length

Wire Gauge

24 4.5 AMPS 25 feet 3 mm2 (14 AWG)

24 4.5 AMPS 15 feet 2 mm2 (16 AWG)

48 2.25 AMPS 50 feet 3 mm2 (14 AWG)

48 2.25 AMPS 30 feet 2 mm2 (16 AWG)

Table 4-3: Cable Bend Radius Constraints

Application Cable Type Bend Radius



NOTEThe LMU is suitable for installation as part of a Common Bonding Network (CBN) or Isolated Bonding Network (IBN).

4.5.5 Torque Ranges for Fasteners

Unless otherwise specified, refer to the table below for the recommended torque ranges for the various fasteners used when installing the LMU.

4.5.6 Multicoupler Gain

For optimal operation the RF multicoupler should provide -4 to 22 dB of gain.

4.5.7 GPS Parameters

The following constraints are necessary for GPS parameter entries in Section 11: Set GPS Parameters.

The tolerance for the altitude value is within 1 meter. The tolerance for the latitude and longitude is +/-.00002 degrees or +/- 2e-5 degrees (7.2 feet).

4.6 Selecting Cables

This section describes considerations for selecting RF, GSM downlink, GPS, T1 cables.

Table 4-5: Torque Ranges for Fasteners

FastenerTorque (Inch-

Pounds)Torque (Foot-

Pounds)

6-32 7.7-9.6

8-32 11.0-13.0

1/4-20 5-6

3/8-16 18-20

M4 11.0-13.0

M5 17.0-19.0

M6 20.0-23.0



4.6.1 RF Cables

Select RF cables for operating between the multicoupler and the LMU. Obtain the gain at the multicoupler and measure the distance between the multicoupler and the LMU. Use Appendix C: Cable Selection Tables to identify the RF cable for Cellular, AWS and PCS LMUs. Ensure the RF cables are free of any physical or electrical defects.

Figure 4-2 illustrates the RF cable connection.

Figure 4-2: Selecting RF Cables

NOTEMulticoupler can contain RF filters, amplifiers, and duplexers in any combination.

1. To select the RF cable (A):

2. Measure the length of RF cable (A) between the multicoupler and the LMU. Record this length measurement _________m.

3. Obtain the multicoupler gain using the appropriate test equipment. Record the gain measurement. ________dB.

4. Refer to Appendix C: Cable Selection Tables for Cellular, AWS and PCS RF cables.

5. Use the Cable Selection Charts to select the cable type matching the cable distance measured in step 2 and the RF antenna gain measured in step 3.

4.6.2 GPS Cable

A GPS cable connects the GPS antenna to the LMU. Use Table 4-6 to determine the correct GPS cable type based on the length of the cable run. The table states when an in-line amplifier is needed and provides the appropriate SCD (Source Control Drawing) number for reference.

For instructions on which cable type to use for cable runs over 540 meters, call the TruePosition TAC.

RF Antenna

Multicoupler LMURF Cable A



NOTEMake sure to record the lengths of the RF and GPS cables selected for the install, as these are important SCOUT parameters.

4.6.3 GSM Downlink Antenna Cables

The GSM downlink antenna cable connects the GSM monitoring downlink antenna to the LMU. The supported cable types are CNT-240-FR and FSJ2-50. Use the tables in Appendix C: Cable Selection Tables to determine the correct GPS cable type based on the length of the cable run. For cable runs over the maximum values in meters shown in the tables, call the TruePosition TAC.

4.6.4 T1 Cables

T1 cables are shielded cables used to connect the LMU to the BTS drop and insert device, or D & I. The customer provides the D & I, which may or may not be within the BTS.

Cables for an External T1 Drop and Insert Device

To use an external T1 D & I (not located within the BTS where you are installing the LMU), a T1 crossover cable is required. Figure 4-3 illustrates the pin-out convention for the T1 shielded crossover cable.

Table 4-6: GPS Cable Type and Length

Cable Length Cable Type SCD Number In-line Amplifier

0 - 31 meters Andrew CNT-240-FR

10061 No

32 - 60 meters FSJ2 10011 No

61 - 110 meters LDF4 - 50A 10062 No

111 - 180 meters LDF5 - 50A 10066 No

181 - 330 meters LDF4 - 50A 10062 Yes

331 - 540 meters LDF5 - 50A 10066 Yes



Figure 4-3: Shielded CAT-5 T1 Cross-over Cable Pin-out Convention

Cables for an Internal T1 Drop and Insert Device

To use an internal D & I (located within the BTS where you are installing the LMU), you must choose the specific T1 cable that works with your chosen vendor’s BTS. The correct pairings of BTS vendor and T1 cables are shown in Table 4-7. The table also indicates the loopback connector used for performing local loopback tests. Note that a crossover cable is not required.

4.7 Equipment

This section describes the equipment required for the LMU cell site installation including supporting equipment, test equipment, and basic tools.

Table 4-7: T1 Cables

BTS Vendor DescriptionCable Assembly

Part Number

Loopback Connector Part

Number

Ericsson DB-15 to RJ-45 (1 meter or 8 meters)

ADR-06-1174-00

ADR-06-1174-01

ADR-06-1131-00

Nokia 45 Degree DB-9 to RJ-45 (6 meters)

ADR-06-1173-00 ADR-06-1131-00



NOTETruePosition installation kits vary based on cell site requirements. Obtain the specific installation kit required for mounting the LMU and installing the GPS antenna.

4.7.1 Vital Equipment

Table 4-8 describes the equipment required for cell site LMU installation:

4.7.2 Test Equipment

Table 4-9 describes test equipment required for cell site LMU installation:

Table 4-8: Vital Equipment

Vital Equipment

Description Requirements

LMU Location Measurement Unit

Must be configured according to the configuration and system testing instructions in this guide.

GPS Mounting Kit

GPS antenna mounting kit.

Includes mounting hardware such as the bracket assembly, screws, nuts, bolts, and washers. The GPS antenna is not included.

GPS Installation Kit

Specific hardware assigned to the cell site installation.

Includes hardware required for installation. It also includes the GPS antenna, surge suppressor, power-pig-tail and ground lug hardware. The kit does not include the LMU, GPS mounting hardware and bulk material.

Bulk Material General hardware assigned to all cell site installations.

Includes hardware such as lugs, RF cable reels, ground cable reels, T1 cable, and weatherproofing tape.

GSM Downlink Antenna Kit

Contains the material for the GSM downlink antenna

Includes mounting hardware such as the antenna and bracket assembly for single and dual-band GSM downlink antenna installations. Options include installations inside or outside the cell site shelter.

All Inclusive kit (all but LMU)

Contains everything needed to install an LMU, based upon the (1) type of BTS, and (2) type of antenna and mount needed.

All of the requirements listed above apply.



:Table 4-9: Test Equipment

Test Equipment Description Requirements

T-Berd 2200 (or equivalent)

Isolates T1 DS0 connectivity problems.

Includes:

TTC 2000 test pad TB2209-DS1T-BERD 2209 DS1 Module

TB2209-TIMVF PCM TIMS Option

TB2209-FT1 Fractional T1 Option

TB2209-ASP Advanced Stress Patterns Option

TTC2000-XFT TC-2000 with Transflective Display

DS1 CABLE KIT Cable Kit for DS1 Testing

Anritsu 251B, 251C, 331B, 331C, 331D, 332B or 332C (or equivalent)

Used to perform cable sweeps and multicoupler gain measurements. This equipment is used for Cellular (850 MHz), AWS (1700 MHz) and PCS (1900 MHz) applications.

Includes:

Two 15NNF50-1.5A phase stable cables

510-96 7/16 M-M DC-3.5 GHz Adapter

510-90 7/16M - NF DC-3.5 GHz Adapter

Precision open – short

Two 50 Ohm loads

30 piece Adapter kit

Mini DB 9 female to Mini DB 9 female serial null modem interface cable

QMA -F to SMA-F adapter (Amphenol P/N 930-100A-51S

SMA 50 Ohm Termination (Surplus Sales

P/N (RF) 2001-6112-00

Trimble Asset Surveyor or equivalent Site Data Collector (SDC)

Used to collect antenna latitude and longitude and site survey line items for determining AGL (Above Ground Level) antenna height. Only needed for unusual circumstances.

Includes:

Trimble TSC1 Asset Data Collector Hand held unit that holds all the site survey data

Trimble PRO XRS 33302-51 dGPS Actual GPS receiver

LaserTech Impulse 200LR Laser for collecting AGL

Mapstar Electronic Digital Compass Used in conjunction with the Laser and GPS receiver to collect a latitude and longitude

Tripod mount kit

GPS Pathfinder Office V2.8



4.7.3 Basic Tools

Table 4-10 describes basic tools required for cell site LMU installation.

Garmin Asset Surveyor (Recommended alternates)

Portable asset surveyors

Garmin eTrex Vista C

Magellan eXplorist 100

GPS 76s

GPSMAP 60c

or equivalent equipment

(in order of preference)

Digital Multimeter Measures cell site AC and DC voltages. Also measures cable resistance using the Ohms setting.

Laser Range Finder)

Used to measure antenna height (AGL)

LaserTech Impulse 200LR

Nikon ProStaff Laser 440

Table 4-10: Basic Tools

Basic Tools Description Requirements

Multi Purpose ladder 16 feet (extended)

Fish tape Fiberglass tape for routing cables through tight spaces.

25 feet

Nut driver set

Utility knife

Various sized screwdrivers

Torque screwdriver Used for attaching LMU mounting brackets to chassis with 10-32 screws.

Williams part number 401SM or equivalent.

See Table 4-5 for screwdriver torque.

Williams is a division of the Snap On Tool company.

Hammer drill Used for mounting GPS bracket to the shelter.

Includes:

Charger

Extra battery

Assorted high-speed drill bits

Table 4-9: Test Equipment

Test Equipment Description Requirements



18V cordless drill Includes:

Charger

Extra battery

Assorted high-speed drill bits

½-inch masonry bit

Wire brush kit bit

Note: Do not use the 18V cordless drill in hammer drill applications. The 18V cordless drill does not provide the torque required for drilling concrete.

Soft jaw pliers Used for disconnecting cables without damage to connectors.

Padded pliers

SMA torque wrench Used to tighten SMA connectors to 1 newton-meter of torque.

Flush cutters Used for cutting cable ties during installations.

Tin Snips

3/8” socket set

Adjustable wrench 10 inch — 12inch

Hammer 16 oz.

Crimp tool Used for connecting Molex connector pins to the LMU power supply wire.

14 – 20 AWG

Specify:- Certi Crimp #90296-2, including die

- Pro Crimper #90546-1, including die

- Telephone Crimping Tool (Radio Shack P/N 64-2983

Crimp tool Used for connecting 10 AWG wire.

10 – 12 AWG Specify:Amp #58380-2, including die

or

Klein 1005





Crimp tool Used for larger crimps than 10 AWG wire.

1- 6 AWG

Specify: McMaster Carr compression lug #7333K15

or

Burndy Model Y1MR

Carpenters Level

Wire Brush Used for removing oxidation from ground bar. Perform this activity before attaching the ground cable.

Tape measure 25 feet

RJ 45 crimp tool Used for making the T1 CAT 5 cable assemblies

Paladin 8030 Crimper and Die Set

Coaxial cable crimp tool Used to make RF cable and connector assemblies

RF Industries crimper - PN RFA 4005

(not recommended for Andrews cable and connectors).

or

Paladin 8003 Crimper and Die Set

or

Ideal Model 30-503

Coaxial Cable Connector Assembly Preparation Tools for CNT-240-FR and Equivalents

Used to make RF cable and connector assemblies

Recommended tools:

Paladin Vario (Adjustable)

or

CablePrep / Times MW

Part # 3190-1722 (strip dimensions.419” -.156”)

Part # 3190-1880 (strip dimensions.519” -.156”)

QMA Decoupling Tool Used to remove RF cables from the LMU front panel

Huber Suhner QMA decoupling tool part number 74_Z-0-0-372 (TP part number 18017)

Torque wrench set Standard

Torque wrench set Applicable for customer’s cables

Customer RF cables (if sweeps services are required)

Allen wrench set

File small or Deburring tool





4.7.4 Miscellaneous Equipment

Other assorted equipment needed to install the LMU is detailed in Table 4-11.

4.7.5 Supporting Equipment

Table 4-12 describes supporting equipment required for cell site LMU installations.

USB-9 Pin Adaptor Required if laptop is not configured with a serial port

Flash/ Jump Drive (minimum 128 MB)

Two 5/16 in. open end wrenches

Heat shrink gun

Utility knife

Table 4-11: Miscellaneous Equipment

Miscellaneous Equipment Description Requirement

Digital Camera 2.1 MB pixel resolution (minimum) w/2.1 MB memory card (minimum)

Outdoor foul weather equipment

Heaters/tarps/etc.

Personal Safety Equipment Insulated gloves, foul weather clothing, etc., and fall protection gear.

Vehicle Transport installation crew and four LMUs and all mounting and installation equipment.

Cellular Phone Must be serviced by carrier in whose network the equipment is being installed





:

* May be used for loopback testing from Drop & Insert by combining with female-to-female RJ45 straight-through adapt-er.

4.8 Final Pre-Installation Information

This section describes the final pre-installation tasks to be performed prior to beginning the actual LMU installation.

1. Identify a suitable location to install the LMU.

NOTELMU mounting locations are identified by the carrier before the installation process.

Refer to the Site Preparation Requirements.

Table 4-12: Supporting Equipment

Supporting Equipment

Description Requirement

Laptop computer Computer required for configuring and testing the LMU during installation, with ports and software as indicated.

Includes:

•ProComm Plus - Application used for communicating to the LMU and SMLC.

•SiteMaster Tools 6.4

•Windows 2000 Pro

•Site Survey 6.0

•With USB port or USB serial adapter

•MS Office

•R/W CD ROM

•MS Streets and Trips 2006

Cable Assy, AEP, RJ11 to DB9F, 72”

(Console port cable)

Interface cable that provides the connection from the LMU AEP port to the laptop computer

TruePosition part number 18407R.Laptop and LMU communication requirements.

Loopback connector assembly, ADR-06-1131-00.

RJ-48C connector used for performing the T1 loopback test.*

Assembly requirements specify:

Internal connection from pin 1 to pin 4

Internal connection from pin 2 to pin 5

Internal loop connections must be placed within RJ-45 connector body.



2. Verify that the carrier has provided a DC power source for the LMU mounting location.

3. Verify that the carrier has provided ground location (rack ground or 12 AWG ground wire) for the LMU mounting location.

4. Verify that the carrier has provided the appropriate rack space or wall mount location for mounting the LMU (a wall mount kit is supplied when needed and specified by survey results).

5. Visually inspect the LMU for physical integrity:

– Verify that the security tape has not been broken.

– Verify that the housing is secure.

– Verify that front-panel terminal posts are not bent or loose.

– Verify that the LMU is the correct type (North American or International).

6. Verify that the installation kit contains the correct parts by checking its parts against the enclosed parts list.

7. Verify that the GPS installation kit contains the correct parts by checking its parts against the enclosed parts list.

8. Verify that the GSM downlink antenna contains the correct parts by checking its parts against the enclosed parts list.

9. Verify Bill of Materials (RF and T1 cables, connectors, etc.,).

10. Verify consumables (zip ties, color coding tape, silicon sealant, etc.).

11. Verify the availability of free multicoupler ports, or directional couplers.

12. Verify adequate space on ground bar for GPS and downlink antenna.

13. Verify correct cable routing.

14. Verify adequate location for the GPS antenna location base, in accordance with GPS Antenna Location Basic rule Set (Refer to the Site Preparation Requirements).



4.9 Measurements

Gather any other information specified by your site survey instructions.

NOTESite survey instructions are not included in this document.



5 CHASSIS INSTALL

This section provides instructions to mount and install the LMU in an appropriate rack or wall mount. For LMU mounting constraints, refer to the appropriate section of Section 4: LMU Pre-Installation.

For information about LMU installation kits, refer to the Finder™ Wireless Location System Bill of Materials posted on the TruePosition Customer Access Website. See http://access.trueposition.com.

NOTEYou must collect Mechanical and RF survey data as part of the LMU installation process. The required information is listed in the SCOUT Application Reference Guide in "Appendix A: Input Data File Formats". Within Appendix A, refer to the tables named "Mechanical Site Survey File Format and Data Dictionary" and "RF Survey File Format and Data Dictionary" respectively.

NOTE


NOTEBring the rack’s contact surface to a bright finish using a wire brush and coat it with an antioxidant before making connections to it.

http://access.trueposition.com



5.1 Rack Mounting and Installation

NOTEThis mounting and installation procedure is used, whether implemented in a standalone rack or in any other 19 or 23 inch support structure, inside a base station or an external enclosure.

A set of 19-inch flanges are installed on the LMU from the factory, flush with the front panel. For installations where flush mount is not applicable, the flanges may be moved. Ensure that the flanges are repositioned evenly by using reference marks scribed into the side panels of the chassis. See Figure 5-3.

A set of 23-inch mounting flanges are available with some LMU mounting kits, or they can be ordered separately (part number FDR-11-1303-00). These flanges have rack mounting holes (refer to Figure 5-1) matched to the front or mid chassis. The mounting holes are spaced so that a combination of holes can be matched up for mounting on the front or mid-chassis.

Figure 5-1: 23-inch Mounting Flanges

1. Choose the mounting approach to best match the carrier’s other equipment or to fit into the specific environment.

2. Determine where the flanges mount to the chassis. Refer to Figure 5-2.



Figure 5-2: LMU with Mounting Flanges Attached

NOTEThe 19-inch flanges are installed from the factory, mounted flush with the front panel. For installations where flush mount is not applicable, the flanges may be moved. Ensure that the flanges are repositioned evenly by using reference marks scribed into the side panels of the chassis. See Figure 5-3.



Figure 5-3: Side Panel Reference Marks

3. If replacing the 19-inch flanges with 23-inch flanges, attach right and left flanges to the chassis with 4 3/8-inch (1.27 cm) 10x32 screws (20-23 inch-pound of torque is required).

4. Mount the LMU with flanges in the equipment rack location defined in Table 4-1.

5. Line up the flange holes with the equipment rack holes.

6. Hold the LMU in place and attach to the equipment rack with four screws (20-23 inch-pound of torque is required). The screw type is 10x32, 1/2 inch 12x24, M5 or M6, as determined by the screw threads on the equipment rack (screws are supplied in generic kit PLR-11-1700-00).



Figure 5-4: Rack Mounting

7. Connect the LMU power. For instructions, see Section 6: Power Connections.

5.2 Wall Mount Installation

This section contains instructions for mounting the LMU in a wall mount. The wall mount bracket is supplied in kit PLR-06-1722-00:

1. Disable the power intended for the LMU.

2. Determine location of wall mount.

3. Use a level to ensure the wall mount is level. The LMU can be mounted horizontally or vertically.

4. Mark the location of the holes and drill starter holes.

5. Hold the mounting board in place while installing screws into each of the mounting bracket holes. Refer to Figure 5-5.

6. Attach a #6 AWG green ground wire to the 1/4-20 stud using the ground nut and lock washer supplied in wall mount kit PLR-06-1722-00. The mounting hole selected should only serve as the grounding mount and not as a dual purpose such as securing the bracket to the wall.

7. Connect the opposite end of the green ground wire to the nearest earth ground in the facility. Make this wired ground connection as short as possible.



NOTEThe LMU ground must be connected to the same ground as the power main and the wall-mounting bracket. The wall-mounting bracket must have its own connection to earth ground through at least a #6 AWG ground wire connection. This connection must be made to the nearest earth ground.

8. Mount the LMU into the wall mount and secure with four (2 per side) 10x32 screws, supplied with supplied in Generic Kit 3G LMU PLR-11-1700-00. Note, 20-23 inch-pound of torque is required. See Figure 5-5.



Figure 5-5: Wall Mount Configuration

9. Connect the LMU power. For instructions, see Section 6: Power Connections.



5.3 RF Cable Connections

5.3.1 Uplink Antenna Cable Connections

The LMU supports as many as 18 RF uplink cable connections: a pair per sector (Alpha, Beta, Gamma) and one set for each of three bands.

1. Cut, run and terminate the RF uplink cables. Ensure the cables are free of any defects.

See the 3G LMU Integration Guide that is applicable to the RBS or BTS at the site where you are installing the LMU.

2. Connect the RF cables to the RF uplink ports using the right-angle QMA connectors. Connect the cables to the appropriate cell site sectors. See Figure 5-6.

Figure 5-6: LMU front panel connections

3. Color-code the jumpers to ensure that the correct cable connections are made.

NOTEUse multiple tape colors to identify different RF cables. You must follow color coding scheme.

4. Dress the cables along the LMU front panel as close to the LMU as possible. Do your best not to interfere with equipment above or below the LMU.

5. Connect the RF antenna cables to the multicoupler.

6. Ensure there is enough slack in routing of the cable for future connector replacements.



5.3.2 External Multi-band Downlink Antenna Cable Connections

NOTETo avoid confusion, prior to performing this procedure you must review with the customer representative, which mounting configuration is acceptable to them. Refer to Appendix D: Surge Protector (EMP) Configurations.

1. Measure the distance required for the connection and cut the appropriate length of cable from the reel.

2. Route the cable from the multi-band downlink antenna to the location of the surge protector, and lay it out straight.

3. Using the cable that was cut in step 1, measure and cut the length of cable needed from the GPS antenna to the surge protector.Leaving enough slack for a drip loop, dress the cable along the mounting structure (Do not exceed the cable bend radius defined in Section 4: LMU Pre-Installation). To dress the cable, use cable tie wraps spaced no more than two feet apart.

– If the multi-band downlink antenna is attached to the shelter, attach the cabling to the building using small cabling brackets spaced no more than two feet apart.

– If the multi-band downlink antenna is mounted to the ice bridge, route the cabling along the ice bridge using cable ties spaced no more than two feet apart.

– If the multi-band downlink antenna is mounted on the GPS antenna pipe support, route the cable along the GPS pipe using cable ties spaced no more than two feet apart.

4. Terminate both ends of the cable, using the N-type connectors contained in the installation kit.

5. Inspect connectors to ensure they are properly terminated.

6. Sweep and test the cable, (distant to fault and resistance).

7. Attach the cable to the multi-band downlink antenna connector and tighten, finger tight.

8. Proceed to Section : Mounting the Surge Protector for the External Multi-band Downlink Antennas.



Mounting the Surge Protector for the External Multi-band Downlink Antennas

Surge protector and mounting kit PLR-06-1719-00 contains the surge protector, mounting bracket, and ground lug. Figure 5-7 shows an example of the surge protector.

Figure 5-7: Surge Protector

NOTEThe protected side of the surge protector contains the ground lug.

Figure 5-8 shows an example of a surge protector mounting bracket.

Figure 5-8: Surge Protector Mounting Bracket



To connect the surge protector, complete the following steps:

NOTEPrevent lightning surges from jumping to other conductors or cables:

• Ensure that the surge protector ground wire path is straight and not containing loops.

• Verify that the ground path is as short as possible.

• Ensure that the ground path does not rise above the surge protector.

1. Determine where and how to mount the surge protector. Mount the surge protector as close as possible to the base-station shelter hatch plate. Make sure the cable length from the surge protector to the shelter is as short as possible (no slack).

2. Prepare the surge protector by removing the connector cap on the antenna (un-beveled) end of the surge protector. Insert the ground wire into the grounding lug and crimp it tightly.

3. Connect the cable from the multi-band downlink antenna connector to the surge protector, finger tight. Ensure that the protected side of the surge protector is facing the base-station shelter. The protector is labeled “protected” with a red strip of tape. The protected side contains the ground lug.

4. Measure the distance to the ground bar and cut the correct length of 6-gauge ground wire.

5. Insert the ground wire into the ground lug and crimp it tightly. Figure 5-14 shows an example ground lug.

6. Prepare the surface of the ground bar by using a hand or power driven brush to remove loose oxidation scale and wipe clean.

7. Apply the corrosion protective coating to the ground bar surface.

8. Run the ground wire to the ground bar and install it to the earth ground.

9. Route one end of the remaining length of multi-band downlink antenna cable through the bulkhead to its destination.



10. Terminate the cables as follows:

i. Terminate an CNT-F240-FR cable with an SMA connector at one end and an N-type connector at the other.

ii. Terminate non-CNT-240-FR cables at both ends using the N-type connectors contained in the installation kit.

11. Physically inspect connectors to ensure they are properly terminated.

12. Sweep and test the cable (distance to fault and resistance), if required.

13. Coil the cable leaving enough slack to reach the LMU location, in case of re-termination.

14. Connect the multi-band downlink antenna cable to the surge protector using an N-type connector.

15. Weatherproof all external connections by wrapping the cable connections with the following:

i. One layer of vinyl tape (preferably Scotch Brand #88 Electrical Tape),

ii. One layer of mastic tape extending past the vinyl tape

iii. Three layers of vinyl tape (preferably Scotch Brand #88 Electrical Tape), extending past the mastic tape.

16. From the protected side of the surge protector, run the cable through the entry port of the shelter.

17. Terminate the remaining end of the multi-band downlink antenna cable with a right-angle QMA connector. Figure 5-9 shows an example.



Figure 5-9: Right Angle QMA Connector

18. Connect the right-angle QMA connector to the LMU GSM port DL1.

5.3.3 GPS Antenna Cable Connections

NOTETo avoid confusion, prior to performing this procedure you must review with the customer representative, which mounting configuration is acceptable to them. Refer to Appendix D: Surge Protector (EMP) Configurations.

This section provides the procedure for connecting the GPS antenna to the LMU.

• One in line amplifier may be needed to provide gain to overcome cable loss. See Section : Connecting Cables Using an Inline Amplifier.

• A surge protector is required to protect the LMU from power surges.

Two lengths of cables are required. The first cable connects the GPS antenna to the surge protector. A second cable connects the surge protector to the LMU. The following types of cables are available:

• CNT-240-FR (1/4 in.)

• FSJ2 (1/4 inch - North America, 3/8 inch - International)



NOTEChoose the cable type based on the length of the cable run. Use the same cable type throughout. See Section 4: LMU Pre-Installation for cable selection instructions.

Connecting Cables -- No Inline Amplifiers

Figure 5-10 illustrates the cable connection between the GPS antenna and the TruePosition LMU, with no inline amplifiers, using CNT-240-FR, FSJ2, LDF4 or LDF5 cables.

Figure 5-10: GPS Antenna Cable Connection with No Inline Amplifiers

NOTEThe surge protector must be mounted outside the bulkhead while remaining as close to the bulkhead as possible without touching the cable. The cable from the surge protector to the shelter should be as short as possible (no slack) and should not touch or cross the other cables.

1. Measure the distance required for the connection, from the GPS antenna mounting location to the LMU. Add one additional meter of cable for drip-line and cable re-termination.



2. Select the cable type suitable for the connection and cut the appropriate length of cable from the reel. Refer to Section 4: LMU Pre-Installation for the cable type required for your cable length application.

3. Lay the cable out in an open area and straighten any bends.

4. Using the cable that was cut in step 2, measure and cut the length of cable needed from the GPS antenna to the surge protector.

5. Terminate both ends of the cable using the N-type connector contained in the installation kit.


7. Sweep and test the cable, (distance to fault and resistance).

8. Attach the cable to the antenna connector (port DL1 on 3G LMUs) and tighten, finger tight. Refer to Figure 5-11 for an example.

Figure 5-11: GPS Antenna

NOTEIf you are connecting a combination GPS and multi-band downlink antenna, the antenna connectors are labelled for each cable. Connect the GPS antenna to the connector labelled GPS.

9. If necessary, route and dress the cable along the GPS pipe support.



10. Connect a 6 AWG ground wire from the GPS antenna base to a customer designated grounding location. Typically, a ground bar at the hatch plate.

a) Locate the ground connection on the base of the GPS antenna. Figure 5-11 and Figure 5-12 show the ground connection locations on the antenna.

Figure 5-12: Combined GPS & Multi-band Downlink Antenna Base

b) Measure the distance from the GPS antenna base to the customer designated grounding location and cut the correct length of 6-gauge ground wire.

c) If you are using a pipe extension route the 6 AWG ground along the side of the pipe to the ground connection on the GPS antenna base. Use tie wraps to secure the ground wire to the side of the pipe.

d) Connect the ground wire to the ground lug included in the installation kit.

e) Fasten the lug to the ground on the GPS antenna base, finger tight.

11. Determine where and how to mount the surge protector. You must mount the surge protector at the cell-site shelter as close to hatch plate as possible. Make sure the cable length from the protected side of the surge protector to the shelter is as short as possible.

NOTEThe surge protector mounting kit PLR-06-1720-00, contains the surge protector, mounting bracket and ground lug.

12. Route the cable from the GPS antenna to the location of the surge protector and lay it out straight.

13. Prepare the surge protector by removing the connector cap on the antenna end (un-beveled) of the surge protector. Figure 5-13 shows an example of the surge protector kit:



Figure 5-13: Surge Protector for PLR-06-1720-00

NOTEThe protected side of the surge protector is the side to which the grounding lug is attached.

14. Connect the cable from the GPS antenna connector to the surge protector, finger tight. Ensure that the protected side of the surge protector is facing the base-station shelter. The protector is labeled “protected” with a red strip of tape. The protected side contains a nut for tightening against the ground lug.

NOTEWeatherproof all surge protectors connectors when the surge protector is mounted outdoors. Refer to Step 28 for materials.

15. Measure the distance to the base station exterior ground bar and cut the correct length of 6-gauge ground wire.




• Ensure that the surge protector ground wire path is straight and not containing loops.


• Ensure that the protection ground’s path does not rise above the surge protector.

16. Insert the ground-wire into the grounding lug and crimp it tightly. Figure 5-14 shows an example ground lug.

Figure 5-14: Ground Lug



19. Connect the ground wire to the ground bar.

20. Pull one end of the remaining length of GPS antenna cable through the bulkhead.

21. Route the cable to the LMU. Terminate the end of the cable outside the bulk head using the N-type connector contained in the installation kit. See Figure 5-18.

22. Connect the N-type connector on the cable to the protected side of the surge protector.

23. Terminate the other end of the cable with an SMA connector contained in the installation kit. Refer to Figure 5-15.



Figure 5-15: SMA Connector

24. If required, sweep and test the cable, (distance to fault and resistance).

25. Using an SMA-torque wrench, secure the GPS jumper connector to the GPS port on the LMU.



28. Tighten and weatherproof all external connections by wrapping the cable connections with the following:

a) One layer of vinyl tape (preferably Scotch Brand #88 Electrical Tape),

b) One layer of mastic tape, extending past the vinyl tape.

c) One layer of vinyl tape, extending past the mastic tape, (preferably Scotch Brand #88 Electrical Tape)

NOTEThe vendor recommends that if the protector is exposed to extreme environmental conditions, especially icy conditions or polluted atmosphere, the protector should be covered with self-vulcanizing tape or cold shrink tube.

Connecting Cables Using an Inline Amplifier

Figure 5-16 illustrates the cable connection between the GPS antenna and the LMU, with one inline amplifier using an CNT-240-FR, FSJ2, LDF4 or LDF5 cable.



Figure 5-16: GPS Antenna Cable Connection with One Inline Amplifier

NOTEThe surge protector must be mounted outside the bulkhead while remaining as close to the bulkhead as possible without touching the cable. The cable from the surge protector to the shelter should be as short as possible (no slack) and should not touch or cross the other cables.

1. Measure the distance required for the connection, from the GPS antenna mounting location to the LMU. Add one additional meter of cable for drip-line and cable re-termination.

2. Select the cable type suitable for the connection and cut the appropriate length of cable from the reel. Refer to Section 4: LMU Pre-Installation for the cable type required for your cable length application.

3. Lay the cable out in an open area and straighten any bends.

4. Using the cable that was cut in step 2, measure and cut the length of cable needed from the GPS antenna to the surge protector.

5. Terminate both ends of the cable using the N-type connector contained in the installation kit. Refer to Figure 5-18.





8. You must connect a ground from the GPS antenna base to a customer designated grounding location.

a) Locate the ground on the base of the GPS antenna. Figure 5-11 and Figure 5-12 show the ground connection.

b) Measure the distance from the GPS antenna base to the customer designated grounding location and cut the correct length of 6-gauge ground wire.

c) If you are using a pipe extension route the 6 AWG ground along the side of the pipe to the ground connection on the GPS antenna base. Use tie wraps to secure the ground wire to the side of the pipe.

d) Connect the ground wire to the ground lug include in the installation kit.

e) Fasten the lug to the ground on the GPS antenna base, finger tight.


10. Attach a “Type-N plug to Type-N plug” adapter to the antenna and tighten.

11. Attach the adapter to the antenna input of the inline amplifier and tighten.

12. Lower the antenna and amplifier assembly (as shown in Figure 5-17) through the antenna mount.

13. Attach the GPS antenna cable to the inline amplifier output and tighten, finger tight.



Figure 5-17: GPS Antenna to Inline Amplifier Connection

NOTEWeatherproof all surge protectors connectors when the surge protector is mounted outdoors. Refer to Step 28 for materials. Where the combined GPS and multi-band downlink antenna is used, each connector must be weatherproofed separately.

14. Route and dress the cable.

15. Determine where and how the surge protector will be mounted.



NOTEThe surge protector mounting kit (PLR-06-1720-xx) contains the surge protector, mounting bracket and ground lug.

16. Route the cable from the GPS antenna to the location of the surge protector and lay it out straight.

17. Prepare the surge protector by removing the connector cap on the antenna (un-beveled) end of the surge protector. Figure 5-13 shows an example of the surge protector:

18. Connect the cable from the GPS antenna connector to the surge protector, finger tight.

19. Measure the distance to the ground bar and cut the correct length of 6-gauge ground wire.


• Verify that the surge protector ground wire path is straight and not containing loops.


• Ensure that the protection ground’s path does not rise above the surge protector.

20. Insert the ground-wire into the ground lug and crimp it tightly. Figure 5-14 shows an example ground lug.



23. Connect the ground wire to the base station exterior ground bar.

24. Pull one end of the remaining length of GPS antenna cable through the bulkhead.



25. Route the cable from its source to its destination.

26. Terminate one end of the cable with an N-type connector contained in the installation kit. To see an example N-type connector, refer to Figure 5-18.

Figure 5-18: N-Type Connector




30. Connect the end of the cable with the N-type connector to the protected side of the surge protector.

31. Weatherproof all external connections by wrapping the cable connections with the following:

i. One layer of vinyl tape (preferably Scotch Brand #88 Electrical Tape),

ii. Three layers of mastic tape

iii. One layer of vinyl tape (preferably Scotch Brand #88 Electrical Tape)

NOTEThe vendor recommends that if the protector is exposed to extreme environmental conditions, especially icy conditions or polluted atmosphere, the protector should be covered with self-vulcanizing tape or cold shrink tube.

32. Terminate the other end of the cable with an SMA connector contained in the installation kit. Refer to Figure 5-15.



33. Using an SMA-torque wrench, secure the GPS jumper connector to the LMU GPS port.

5.3.4 Connecting to an Existing, TruePosition Qualified GPS Antenna

An existing feed from a TruePostion qualified GPS antenna can be shared with the LMU by inserting a splitter in its cable path. Additional items such as a DC-block and a line amplifier may be required to filter or amplify the shared signal.

• The Active Splitter divides the GPS signal between the LMU and the carrier’s existing equipment.

• The DC block can be used to prevent the LMU from providing DC power to the existing antenna. DC blocks are also used to prevent the generation of power-loss alarms on existing equipment.

• The line amplifier can be used to provide gain to overcome cable loss.

This section provides the procedures used to connect to an existing GPS antenna. Figure 5-19 illustrates the cable connection between the GPS antenna and the LMU transition jumper.

Figure 5-19: Existing GPS Antenna Cable Connection

Procedure

1. Inside the base station or shelter, determine where the splitter for the TruePosition GPS antenna cable will be inserted into the existing GPS antenna cable.

2. Select the cable type suitable for the connection. Refer to Section 4: LMU Pre-Installation for the cable type required for your cable length application.



3. Disconnect the GPS antenna data path.

4. Cut the existing GPS antenna cable at the location identified in Step 1.

5. Terminate the GPS antenna cable (the portion that connects to the GPS antenna) with an N-type connector. To see an example N-type connector, refer to Figure 5-18.

6. Test the GPS cable.

7. Connect the existing GPS antenna cable to the input of the splitter.

8. Terminate the other portion of the GPS cable (the portion that connects to the existing carrier equipment) with an N-type connector and connect it to the output of the splitter.

9. Reconnect this portion of the GPS cable to the existing carrier equipment.

10. Verify the GPS path has been re-established to the existing equipment.

11. Measure the distance required for the connection from the splitter you just added to the existing GPS antenna cable to the LMU location, and add one additional meter of cable for cable re-termination.

12. Cut the appropriate length of cable from the reel.

13. Lay the cable out in an open area and straighten any bends that exist.

14. Terminate one end of the cable using the N-type connector contained in the installation kit.

15. Terminate the other end of the cable with the SMA connector contained in the installation kit. Refer to Figure 5-15.


17. Sweep and test the cable, (distant to fault and resistance).

18. Route the cable from its source to its destination.

19. If a DC block is required, connect the DC block to the splitter.



20. If the line amplifier is required, connect the line amplifier to the DC block or splitter.

21. Connect the cable to the line amplifier, DC block, or splitter.

22. Route the remaining length of cable from its source to its destination. Using an SMA-torque wrench, secure the GPS jumper connector to the LMU GPS port.


5.4 T1Cable Connections

Instructions in this section define how to connect the T1cables to the front of the LMU chassis.

5.4.1 T1 Cable Connection

If you are using a T1 cable connection to the drop-and-insert unit, this section provides the procedures for completing the connection.

1. Measure the distance from LMU to the drop-and-insert unit.

2. Confirm that pin out assignments of the T1 crossover cable are matched. Use an ohmmeter to test continuity on both ends of the cable. To see the pinout convention used for the T1 crossover cable, see Section 4.6: Selecting Cables.

3. Run, terminate, and dress the shielded CAT-5 T1 cable to the drop-and-insert unit.

4. Plug the connector into the T1/E1 port.





6 POWER CONNECTIONS

This section provides procedures for pulling, terminating, dressing, and installing power cable connectors to the LMU. Two procedures are provided: one for performing a new LMU installation and one for replacing a 2G LMU with a 3G LMU.

NOTE


!CAUTION Adequate ground and power connections are critical for proper LMU

Operation. Ensure proper LMU mounting requirements are met. Refer to this section and to Section 5: Chassis Install.

!CAUTION

The 3G LMU requires the correct voltage polarity for proper operation. Reverse polarity protection is provided to protect the LMU from damage from accidental polarity reversal at initial installation. The REV LED will illuminate red if the input voltage polarity is reversed.

CAUTION: Testing for reverse polarity protection is not recommended or required. However, if testing is desired, you MUST follow this procedure: Before verifying that the REV LED illuminates red (by reversing voltage polarity), the LMU MUST be powered down for a minimum of 5 minutes before power is reapplied. This assures that the reverse protection circuit will reset. Otherwise, the LMU may be damaged.



6.1 Ground and Power Cable Connection for New Installation

NOTEThe following steps must be completed before powering the LMU. This connection should be made by the installer when they run cable from the circuit breaker panel. The LMU install kit provides the power connector and associated components.

1. Use a voltmeter to determine whether the DC power port on the BTS or on the carrier supplied power leads are receiving power.

2. Identify the power cable that connects to the power panel, circuit breaker or fuse.

This cable will consist of one black wire and one red wire.

3. Use a voltmeter to identify the positive and negative leads of the cable.

4. Select the Mate-N-Loc power connector (part number 11011R) and three crimp pins (part number 11213R) from the 3G LMU Generic Install kit, PLR-11-1700-00. See Figure 6-1.

Figure 6-1: LMU Mate-N-Loc Power Connector and Crimp Pins

5. Strip the ends of the two power cable wires and crimp into the two male crimp pins (part number 11213R) supplied in the generic 3G LMU install kit (part number PLR-11-1700-00).

6. Insert the positive wire into the Mate-N-Loc connector (part number 11011R) housing pin one.



7. Insert the negative wire into the Mate-N-Loc connector housing pin three.

NOTE

Ensure that the correct voltage polarity is present at the LMU side of the power connector. The LMU will not function if the voltage polarity is reversed. The REV LED will light if the voltage polarity is reversed.

8. Cut a length of 12 AWG ground wire (green) supplied in the Inclusive Cabling kit (part number 1737-80) for rack grounding the LMU. To determine the length of the ground wire, measure the distance from the LMU an appropriate chassis ground on the rack frame or rack ground bus bar (usually mounted on top of the rack).

9. Strip the ground wire and crimp one end into one of the male crimp pins (part number 11211R) supplied in the generic install kit.

10. Crimp the other end of the ground wire into one of the ring lugs (part number 13181R) supplied with the generic 3G LMU install kit.

11. Insert the crimp pin end of the ground wire into the Mate-N-Loc connector housing pin two.

Figure 6-2 shows an example of an assembled power cable.

Figure 6-2: Sample LMU Power Cable



12. Ensure the LMU breaker is in the OFF position. If the LMU power is provided through a fuse, ensure the fuse is removed to disable power.

13. Plug the LMU power cable into the DC power connector on the LMU.

14. Attach ring lug 13181R of the 12 AWG ground wire to the rack frame or rack ground bus bar.

15. Attach a second ground wire to the ground post on the LMU.

a) Cut a length of 12 AWG ground wire supplied in the Inclusive Cabling kit (part number 1737-80) for rack grounding the LMU. To determine the length of the ground wire, measure the distance from the LMU an appropriate chassis ground on the rack frame or rack ground bus bar (usually mounted on top of the rack).

b) Crimp one of the supplied ring lugs (part number 13181R or 13536R) onto one end of the ground wire.

c) Attach ring lug 13659R to 12AWG ground wire and attach to the ground post on the LMU and tighten the nut. See Figure 6-3.

Figure 6-3: Ground Wire Connection

Warning Electrical Hazard

Verify with a voltmeter that the power feed is off before connecting the DC Power cable to the LMU.



NOTEUse anti-oxidation paste such as NoOx on the ground connection.

d) Attach the other end of the 12 AWG ground wire (green) to the rack frame or rack ground bus bar.

NOTE

If replacement ring lugs need to be ordered, refer to Appendix A: Part Number Cross-References.

6.2 Ground and Power Cable Connection for 2G LMU Replacement

NOTEThe following steps must be completed before powering the LMU. The 2G to 3G LMU swapout kit (part number PLR-11-1701-00) provides the power adapter cable and associated components.

1. Inspect the power cable from the power panel, circuit breaker or fuse (this cable was previously connected to a 2G LMU):

a) Determine the voltage polarity at the connector using a volt meter

b) Determine gender of the connector.

2. Based on this information, assemble the power adapter cable.

The power adapter cable (part number PLR-11-1119-00) consists of a 3-wire cable (black, red and green wires) with a connector on one end and crimp pins on the other end. A Male connector housing (11011R) and a female connector housing (11400R) are also provided in the swapout kit (See Figure 6-4). Four crimp pins for 12 gauge wire (41044R) and four crimp pins for 14 gauge wire (11213R) are also included in the swapout kit.



Figure 6-4: Power Adapter Cable

a) Select the connector housing that is the opposite gender from the connector on the power cable from the power panel, circuit breaker or fuse.

b) Based on the wiring and polarity determined in Step 1, insert the pins of the Power Adapter Cable into connector housing.

The color coding of the power adapter cable is as follows:

– Red - Positive

– Black - Negative

– Green - Ground

3. Plug the end of the power adapter cable that you just assembled into the connector of the power cable from the power panel, circuit breaker or fuse.

4. Ensure the LMU breaker is in the OFF position. If the LMU power is provided through a fuse, ensure the fuse is removed to disable power.

5. Plug the other end of the power adapter cable into the DC power connector on the LMU.

Warning Electrical Hazard

Verify with a voltmeter that the power feed is off before connecting the DC Power cable to the LMU.



6. Attach a ground wire to the ground post on the LMU.

a) Cut a length of 12 AWG ground wire supplied in the Inclusive Cabling kit (part number 1737-80) for rack grounding the LMU. To determine the length of the ground wire, measure the distance from the LMU an appropriate chassis ground on the rack frame or rack ground bus bar (usually mounted on top of the rack).

b) Crimp one of the supplied ring lugs (part number 13181R or 13536R) onto one end of the ground wire.

c) Attach ring lug 13659R to 12AWG ground wire and attach to the ground post on the LMU and tighten the nut. See Figure 6-3.

Figure 6-5: Ground Wire Connection

NOTEUse anti-oxidation paste such as NoOx on the ground connection.

d) Attach the other end of the 12 AWG ground wire (green) to the rack frame or rack ground bus bar.



NOTE

If replacement ring lugs need to be ordered, refer to Appendix A: Part Number Cross-References.

6.3 Power On the LMU

Before powering on the LMU, the GPS antenna must be connected. Once you apply power to the LMU it will begin locating satellites. The location process will complete in approximately 15 to 20 minutes, unless the location is entered manually with the GPS command.



7 DETERMINING THE GSM DOWNLINK ANTENNA CONFIGURATION

GSM downlink antenna installation applies for GSM installations only. To support GSM location processing from a 3G LMU, you must install a GSM downlink antenna at the cell site, connect it to the LMU, and download GSM capable software.

GSM downlink antennas can be installed:

• Outside the base-station shelter, with the GPS antenna or separate from it (typically attached to the shelter, or on the ice bridge)

• Inside the base-station shelter

NOTEMounting the GSM downlink antenna inside the base-station shelter is only intended for 100% deployed markets, and only as directed by network design.

Determine the GSM downlink antenna configuration based on the following criteria:

• If possible, install an external model downlink antenna in the same location as the GPS antenna. If it is not possible to mount the GSM downlink antenna with the GPS antenna, mount it on the ice bridge or on the shelter. For instructions, see the following section(s) in the GPS and Multi-Band Downlink Antenna Installation Guide:

– “GPS Antenna Only Mounting Options with Universal Mount” or

– “GPS/Multi-band Downlink Antenna Mounting Options with Universal Mount”

NOTEBefore mounting the GSM downlink antenna to the ice bridge, ensure that this is an approved mounting method at the cell site.

• If network design has directed that LMUs are to be installed at all cell sites in a market (100% deployment), and has recommended the use of internal downlink



antennas, install an internal (inside the shelter) magnetically mounted GSM downlink antenna. For instructions, see the Install Internal Downlink Antennas for 3G LMUs section of the GPS and Multi-Band Downlink Antenna Installation Guide.



8 CONFIGURATION AND TEST OVERVIEW

The following sections define how to configure and test an LMU for operation.

Perform the procedures using the connection from the LMU console port to the laptop computer. You must configure ProComm Plus for communicating with the LMU. For instructions, see Appendix B.2: Configuring the Console Interface. After completing configuration and system testing, the LMU is ready for operation.

Configuration includes the following:

• Set GPS parametersSetting and checking GPS location parameters.

• Check RF gainConduct the built-in test (BIT) 6. The BIT 6 measures the power spectral data received from the six LMU RF antennas.

• Test the digital signal processor (DSP) MemoryUse BIT 4 to check the operation of the four LMU DSP memory modules.

• Test the Control Processor (CP) MemoryUse BIT 5 to check the operation of the CP memory module.

• Test the GSM downlink antenna. This applies for GSM installations only.

• Set T1 strappingEnabling one of the LMU T1 DS0 time slots.

8.1 Preparation

Complete the preparation and installation procedures in this guide before configuring and testing the LMU.





9 SETTING UP THE PROCOMM CONSOLE INTERFACE

In order to perform LMU configuration and testing, you must set up the ProComm console terminal along with a Chat Window on your laptop. To set up the ProComm emulation program for communicating with the LMU, complete the following steps:

1. Connect the laptop to the LMU console port using Cable Assy, AEP, RJ11 to DB9F, 72 inch, part number 18407R. Refer to Figure 9-1 for the location of the console port on the LMU front panel.

Figure 9-1: LMU Console Port

NOTEThe 3G LMU console port is labeled “AEP”.

2. Set the ProComm parameters to 115.2K, N-8-1, RAW ASCII and ANSI BBS.



NOTEThere are two ways to set the ProComm parameters:

• Go to the Tools Icon or the connection directory and make a new connection.

• Go to View and make sure you have Quick Select Line checked—if you have Quick Select Line checked, you can click on the boxes at the bottom of the screen and select the parameters that you want.

The first method saves a setup you can recall later.

3. Select the Comm Port number being used in the ProComm terminal window.

4. Press R to display a prompt

5. Click Data and then click Chat Window.

9.1 The ProComm Chat Window

Use the ProComm Chat window to enter commands when testing and configuring an LMU. Type all console port commands in the ProComm Chat window, with the LMU in standard operating mode.

9.2 Standard Operating Mode

To operate the LMU using the ProComm Chat Window, you must be in Standard mode. The LMU automatically boots in standard mode if it is receiving GPS signals. Standard mode is defined as:

• The default mode

• Displays the LMU> prompt

• Is used for all commands described in this section

• Is also referred to as the dshell

• Is not case sensitive when used with the ProComm Chat window

If the LMU does not have good timing (or at least four satellites) following a power up or reset, the start-up process does not automatically place the LMU into the standard operating mode. This is a common condition at installation time, since LMUs are not configured for the proper interface modes and strapping.

If there is no prompt, you need to check for the correct software.



The LMU will display the status of the T1 connection as follows:LMUBOOT> T1 connected (For a T1 device)

LMUBOOT> T1 disconnected (for a T1 device)

If the prompt states T1 disconnected, then the LMU does not have the proper backhaul connections/signals. This can be confirmed by pressing R and observing the LMU prompt.

Type P and press R to proceed.

9.3 Operating Following A Reset

This section describes how to operate the LMU following a reset. Specifically, it instructs the operator how to manually command the LMU into Standard Operating Mode so it can be configured and tested.

9.3.1 Reset without a T1 Signal

This section provides instructions for resetting the LMU when it does not have a T1 connection. You need to reset the LMU with the T1/E1 port disconnected when configuring the T1 DS0 assignment described in Section 10: Set Up Strapping.

NOTEThe LMU boot process stops after a reset if a T1 connection is not established. This condition can also occur if the T1 connection is lost between the LMU and the SMLC due to problems in the T1 facility.

1. Type reset RWait two seconds for the LMU terminal display to stabilize following the reset condition.

2. Confirm that the LMU is in boot state via the LMUBOOT> prompt and then type proc R to allow the LMU to proceed with its startup process. The proc command is not visible on the terminal screen after you type it.

3. If there is an abnormal condition, such as no GPS signal, the LMU proceeds to the Tshell state.

Press R to display the prompt. After a few minutes, if the LMU continues to display the -> prompt instead of the LMU> prompt when the R key is pressed, it does not have enough GPS satellites. If this is the case, skip the next step and go to Section 9.3.2: Reset without a GPS Signal.



4. If no abnormal conditions exist, such as no GPS signal, the LMU completes the startup procedure and displays startup information similar to the following:BootRom Built From: /devvob/LMU-NxtGen/BspBoot

Built By: jhendel On: Thu Sep 4 13:39:15 Eastern Daylight Time 2008

BuildTag: LMU3G_BOOT-RXX.YYBLZZZ

(Where XX = major software revision, YY = minor software revision, and ZZZ = build number.)

CPFPGA version is: 0xF000000D

DDC FPGA Ver: FPGA3G_DDC-R11.3BL009

SRCH FPGA Ver: FPGA3G_SRCH-R11.3BL007

DEMOD FPGA Ver: FPGA3G_DEMOD-R11.3BL003

CORR1 FPGA Ver: FPGA3G_CORR1-R11.3BL003


RX3 FPGA Ver: FPGA3G_RX3-R12.0BL012

Application Built From: /devvob/LMU-NxtGen/CP/default

Built By: dwaller On: Tue Oct 7 16:54:08 Eastern Daylight Time 2008

BuildTag: LMU3G_FLASH-R12.0BL004

GPS SW version is TPGPSFLASH-R11.3BL001GPS FPGA version is TP FPGA 21GPS ENGINE version is GPS Engine 0.4850266.0.5GPS Software Checksum is 7754

GPS FPGA Checksum is ef1f

GBE Not ConfiguredCP RAM Memory Test has not been run

Total download time is 10.189858590 S

Initialize and start 1 minute timer

The random start time will be 1264 secs

3G-LMU DSP Software - LMU36_DSP-11.3BL013



Booted From: Flash Area(2)

LMU>

9.3.2 Reset without a GPS Signal

If the GPS signal is not received during a reset, the LMU boots directly into target shell (Tshell) mode. This occurs after the proc R command is entered at the LMUBOOT prompt, or if the LMU is automatically proc-ed by the SMLC.

1. Confirm the LMU is in Tshell by pressing R and observe the -> prompt.



2. If the LMU is in Tshell, after the PROCR(->) type dshell R in the Pro Comm Chat window R to proceed into the Standard Operating Mode.

3. LMU displays the LMU> prompt that it is in the Standard Operating Mode.

4. Standard Operating Mode commands can now be sent to the LMU> prompt. Typing build R returns all the LMU and ancillary equipment builds. LMU displays information similar to the following:BootRom Built From: /devvob/LMU-NxtGen/BspBoot
















GBE Not ConfiguredLMU>





10 SET UP STRAPPING

Strapping configures the LMU to communicate using T1 or E1. To set the strapping for the LMU, complete only the appropriate sections for T1 or E1 below.

NOTEWhen entering console port commands, type one space between a command and its variables, and between each variable following the command.

Perform all commands at the LMU> prompt. If you are not at the LMU> prompt, see Appendix B: Console Port User Guide for instructions.

NOTE

You must set E1 strapping to run the local loopback test (see Section 15.6.6: Local Loopback Test).

10.1 Set the T1 Strapping

To set T1 strapping, complete the following steps:

1. Access the LMU using the Console Port connection. For instructions about configuring ProComm Plus, see Appendix B.2: Configuring the Console Interface.

2. Type strap <DS0 time slot> <network type> <speed> <framing> <line coding> R

NOTEThe values you use in this command must be separated by spaces and entered in the order shown above.



Table 10-1 defines how to enter each parameter.

3. To change the strapping variables, enter a command similar to the following:strap 2 T1 64k esf b8zs RThis sets the following parameters:

– DS0-2

– T1

– 64k

– esf

– b8zs

4. To display the strapping information, type showcomcfgs R.A status message similar to the following is displayed:strap 2 T1 64k esf b8zs

Ram Config:

BootMethod: FLASH

T1 Mode:

T1 Line Status: DISCONNECTED

enable_56kbps 64K

framing ESF

line_coding B8ZS

DS0 MAP 24 bits:

B0:D B1:D B2:E B3:D B4:D B5:D B6:D B7:D B8:D B9:D B10:D B11:D B12:D B13:D B14:D B15:D B16:D B17:D B18:D B19:D B20:D B21:D B22:D B23:D

Table 10-1: Set T1 Strapping Variables

Parameter Definition

<DS0 time slot> Enter a value from 0 -23 representing the available time slots.

<network type> “T1”

<speed> Enter the appropriate line speed: “64k” or “56k”

<framing> Enter the appropriate T1 framing: “esf” or “d4”

<line coding> Enter the appropriate line coding: “b8zs” or “ami”



NOTEThe status of slot 2 is: “B2:E” indicating that the slot is enabled. This example applies for T1 only.

5. Confirm that the strapping information is correct. If any of the information was entered incorrectly, repeat steps Step 2 to Step 4.

6. Connect the T1 cable to the T1/E1 port on the LMU front panel.

7. Type reset R (allows LMU to communicate with the SMLC).

10.2 Set E1 Strapping

NOTEIf you change the strapping on the LMU between T1 and E1, you must reset the LMU.

To set E1 strapping, complete the following steps:

1. Access the LMU using the Console Port connection. For instructions about configuring ProComm Plus, see Appendix B.2: Configuring the Console Interface.

2. Type strap <DS0 time slot> <network type> <speed> <framing> <line coding> R

Table 10-2 defines how to enter each parameter.

Table 10-2: Set E1 Strapping Variables


<DS0 time slot> Enter a value from 1 -31 representing the available time slots, (Example shows B1 enabled).

<network type> “E1”

<speed> Enter the appropriate line speed: 64k (this is the only option)



3. To change the strapping variables, enter a command similar to the following:strap 1 E1 64K NOMFNOCRC hdb3 RThis sets the following parameters:

– DS0-1

– E1

– 64k

– NOMFNOCRC

– hdb3

4. To display the strapping information, type showcomcfgs R.A status message similar to the following is displayed:strap 1 E1 64K NOMFNOCRC HDB3

Ram Config:

BootMethod: FLASH

E1 Mode:

E1 Line Status: DISCONNECTED

framing NONMFNONCRC4

line_coding HDB3

DS0 MAP 32 bits:

B0:D B1:E B2:D B3:D B4:D B5:D B6:D B7:D B8:D B9:D B10:D B11:D B12:D B13:D B14:D B15:D B16:D B17:D B18:D B19:D B20:D B21:D B22:D B23:D B24:D B25:D B26:D B27:D B28:D B29:D B30:D B31:D

NOTEFor E1, DS0 time slot 0 cannot be enabled.

<framing> Enter the appropriate T1 framing:

“NOMFNOCRC”

“NOMFCRC”

“MFNOCRC”

“MFCRC”

<line coding> Enter the appropriate line coding: ”hdb3” or “ami”

Table 10-2: Set E1 Strapping Variables




5. Confirm that the strapping information is correct. If any of the information was entered incorrectly, repeat steps Step 2 to Step 4.

6. Connect the T1/E1 cable to the T1/E1 port on the LMU front panel.

7. Type reset R (allows LMU to communicate with the SMLC).

10.3 Verify the SMLC Connection

Complete this procedure to verify that the newly installed LMU and the SMLC are communicating.

NOTEIf the LMU is not yet connected to the network (it is not presently communicating with an SMLC), do not complete this section. Proceed to Section 11: Set GPS Parameters.

1. At the LMU> prompt, type reset R. If the LMU is configured correctly and the network connectivity from LMU to SMLC is correct, the LMU completes the startup procedure and enters Standard operating mode. The console displays startup information similar to the following:BootRom Built From: /devvob/LMU-NxtGen/BspBoot


























LMU>

2. If the LMU> prompt displays, the LMU is communicating with the SMLC. Proceed to Section 11: Set GPS Parameters.

3. If the LMU> prompt does not display, one of the following messages will appear:

– Data link layer re-initialized - this indicates that the LMU is communicating with an SMLC. The LMU has not automatically booted. Go to Step 4.

– T1 line disconnected - For instructions about correcting T1 problems, see Section 15.6.5: Correcting T1 Problems for instructions on troubleshooting the connection to the SMLC.

NOTEIf no message displays, check your strapping and verify that you entered the correct values. Make necessary corrections. If the strapping values are entered correctly, see Section 15.6.5: Correcting T1 Problems for instructions on troubleshooting the connection to the SMLC.

4. If the SMLC “Data link layer re-initialized” message is displayed, but the LMU does not display the messages and LMU> prompt as indicated in Step 1 in this list, then one of the following exists:

a) LMU proceeded to the target shell (Tshell) because of an abnormal condition (i.e.,No GPS Signal). This can be confirmed by pressing R and observing the



-> prompt. The LMU can be manually placed in the Standard operating mode by typing: dshell R

b) LMU stayed in the BOOT state (LMU displayed LMUBOOT> prompt) for other reasons, such as incorrect configuration and/or connectivity to SMLC. The LMU can be manually proceeded into the Standard operating mode by typing proc R

The proc command is not visible on the terminal screen when you type it. When the LMU completes booting, the LMU> prompt displays.





11 SET GPS PARAMETERS

To set the GPS parameters, determine the GPS location, then configure the LMU.

11.1 Preparation

Obtain the GPS latitude and longitude information from Table 4-1 before performing the checkout procedure.

GPS latitude and longitude values are required for configuring the LMU for the GPS antenna position. If you have not already done so, record these eight or nine digit values in the appropriate spaces provided in Table 4-1.

11.2 GPS Antenna Position

This section defines the requirements for formatting longitude, latitude and altitude values you enter in the LMU Console Port. Configure the GPS antenna position prior to operation. The configuration data you enter is used until a configuration is downloaded from the WLS. If not entered, default data is used.

11.2.1 Set-Up and Configuring the GPS Handheld Device

The GPS handheld device that is to be used for determining antenna position must meet the following manufacturer specifications:

• WAAS/EGNOS enabled

• Accuracy:

– GPS: <10 meters, 95% typical

– DGPS: <3 meters, 95% typical

!CAUTION

If you do not format the Latitude and Longitude values for the GPS antenna position correctly, the LMU will not function properly.



In order to reduce the amount of time to get a location to the required accuracy, it is highly recommended that a high sensitivity receiver be used. A high sensitivity receiver is a GPS industry term used to describe most of the new GPS devices on the market.

Prior to determining the longitude, latitude and altitude the device user must ensure that the device is set-up properly and configured correctly.

The following items must be configured correctly on the device:

• Set WAAS to Enabled

• Set Elevation to Meters

• Set Location Format to hddd.ddddd

• Set Map Datum to WGS-84 (ellipsoid)

Refer to the Owner’s Manual and/or Reference Guide provided with the device for instructions to configure the device. If there are no instructions with the device, you can download a copy of the manual at the manufacturers web site.

11.2.2 Finding and Entering Longitude

Longitudes represent specific map locations from -180 to 180 degrees. A longitude may contain up to 6 digits to the right of the decimal. For example, 123.123456 is a valid longitude. Longitudes in the western hemisphere are preceded by a negative sign. For example, -115.3709 degrees represents a longitude in the western hemisphere. To enter this longitude on the Console Port, type -115.3709.

11.2.3 Finding and Entering Latitude

Latitudes represent specific map locations from -90 to 90 degrees. A specific latitude may contain up to 6 digits to the right of the decimal. For example, 23.123456 is a valid latitude. Latitudes in the southern hemisphere are preceded by a negative sign. For example, -39.646911 degrees represents a latitude in the southern hemisphere. To enter this latitude on the Console Port, type –39.646911.

11.2.4 Finding and Entering Altitude

Perform the following procedure to obtain the altitude parameter:

1. With the GPS receiver powered ON, position it vertically at the base of the antenna.

NOTEWait five minutes before recording the Elevation parameter.



2. Record the Elevation displayed.

3. Add the height of the antenna to the Elevation reading.

4. The combination is the altitude of the site antenna.

5. Enter the altitude parameter on the Console Port and Site Survey form.

NOTEGPS parameters in the SCOUT configuration files overwrite the value if a Site Survey is not submitted for configuration file update.

11.3 Set the GPS Parameters

This section defines how to configure the GPS antenna latitude, longitude, antenna delay, and antenna altitude. Refer to Section 11.2: GPS Antenna Position for constraints on these values.

NOTECommands entered on the ProComm window do not display.

To set GPS parameters and check status of the GPS:

1. Disconnect the LMU T1 connection.

2. Attach a laptop running ProComm to the console port of the LMU. Figure 11-1 shows the T1 and Console port locations.

Figure 11-1: LMU T1 and Console Ports

3. Verify in ProComm Plus that the baud rate is 115200, the terminal type is ANSI BBS, the protocol is N-8-1, and the transfer protocol is set to RAW ASCII mode. Refer to Appendix B.2: Configuring the Console Interface in the appendix.



4. Type reset R.

5. Type proc R to allow the LMU to proceed with booting. The LMU completes the startup procedure and displays startup information similar to the following:

BootRom Built From: /devvob/LMU-NxtGen/BspBoot
























LMU>

6. Type gps <latitude> <longitude> <Antenna_Delay> < Antenna_Altitude> R.



– For latitude and longitude use the values from Table 4-1. For instructions about Latitude and Longitude formatting requirements, see Section 11.2: GPS Antenna Position.

– For Antenna_Delay, enter number of nanoseconds to be added to account for antenna cable delays. Allow one nanosecond per foot of cable from the LMU to the GPS antenna.

– For Antenna_Altitude, enter the altitude in meters as determined in Section 11.2.4: Finding and Entering Altitude.

For example; gps <latitude> <longitude> <antenna_delay> < antenna_altitude> can be entered as:GPS 39.678701 –75.6469 16 95

7. Type reset R. Wait for the LMU terminal display to stabilize following the reset.

8. To allow the LMU to complete booting, type proc R. The LMU completes the startup procedure and display startup information similar to the following:BootRom Built From: /devvob/LMU-NxtGen/BspBoot














!CAUTION

If you do not enter latitude and longitude altitude or delay in the LMU using the correct format, the LMU will not function properly.













LMU>

9. Type ?gps R to display a one line response showing the current entered GPS position. For example; GPS 39.678701 –75.6469 16 95.

10. Verify that the GPS position matches the intended values.

11.4 Verify GPS Synchronization

Perform the following steps to verify that GPS Synchronization is achieved:

1. Type gstat R to display GPS status conditions. Table 11-1 shows an example status message:



Each row in the table represents a satellite that is being tracked by the LMU.

Message headings for the response to the gstat command are described in Table 11-2.

Table 11-1: Status Message

PRN Slot Chan HD Az El Sig PQ DM

1 0 1 618 0 0 35 1 1

5 0 2 618 0 40 1 1

13 0 3 618 0 0 42 1 1

4 0 4 618 0 0 40 1 1

7 0 5 618 0 0 37 1 1

24 0 6 618 0 0 42 1 1

30 0 7 618 0 0 40 1 1

Table 11-2: Status Message Headings

Message Heading

Summary Description

PRN Pseudo-Random-Noise Each satellite is assigned a unique pseudo-random-noise code to identify it from other satellites.

Slot Channel slot Set to zero in all cases.

Chan Channel GPS receivers track up to 8 satellites on separate channels.

HD Holdover Duration This is the time in seconds that the LMU has been in holdover. Values for holdover can be the same for each line displayed in the status message.

Az Azimuth Satellite azimuth in degrees (0 through 359).

El Elevation Satellite elevation in degrees (0 through 90).

Sig Signal Satellite signal strength (must be greater than or equal to 30).

PQ Position Questionable Flag

Values for Position Questionable Flag can be the same for each line displayed in the status message.

DM Discipline Mode Clock discipline mode.



2. Verify that the LMU is tracking at least four satellites with signal strength greater than or equal to 30.

NOTEThe GPS antenna must track at least four satellites for proper operation. Satellite signal strength below 30 cannot be detected.

3. Reconnect the LMU T1 connection.



12 POWER MEASUREMENT TEST

12.1 Introduction

This section defines the test procedure for evaluating LMU RF ports using the power measurement test (BIT 6). This test evaluates the RF path from the uplink or downlink antennas to the LMU input ports and is a useful method for detecting the basic connectivity of the signal path. The BIT 6 procedure provides pass fail, or indeterminate results.

The RF path is evaluated by comparing the noise floor of the muted versus unmuted LMU port. A difference in noise floor should usually be detected due to the additional gain and added noise of the signal chain preceding the LMU. The test is not definitive, in all conditions, since it is a relative measurement of low level noise.

Figure 12-1 illustrates the function of the RF path test.



Figure 12-1: Function of RF Path Test

12.2 Test Procedure

NOTE

Section 12.3: BIT 6 Command Parameters describes the parameters used by the commands in this procedure. The Port parameters may have to be specified differently, depending on whether or not you are entering a gain command.

To perform the BIT 6, complete the following steps:

1. Obtain the appropriate channels that are available for testing from the local market. Select a channel that is not in use to avoid live signals, and measure noise floor correctly. Results are likely to be indeterminate if signals are present.

2. Make a copy of Table 12-8 to use for recording test results.

3. Disconnect the T1 line, reboot the LMU, and type proc R.



4. Place the LMU into the IN TEST mode by typing etest 15 3 R

5. For GSM installations only, you must disable the Beacon Search before performing this test or the results are not reliable. To stop the Beacon Search, type:Searchbcn none R

The LMU replies with Clearing DBL.

6. Set the port gain to maximum by typing:gain <band> <port> <value> RRefer to Table 12-2 for parameters

NOTE

The maximum gain setting as defined in Table 12-2 should be used for this test. If you get indeterminate results, try a lower gain setting.

7. You can verify the gain on each port by typing ?gain <band> <port> R

Refer to Table 12-3 for parameter values

8. Set port activation for all LMUs by typing: active_port <band> <port> <1> R

Refer to Table 12-4 for parameter values.

9. You can verify the activation on any port by typing ?active_port <band> <port> R

Refer to Table 12-5 for parameter values.


NOTEAlways allow at least 65 seconds before performing a BIT test after placing the LMU into the IN TEST mode.

11. To run the power measurement test, type:bit 6 <dsp> <band> <first channel> <# of channels> <port> RRefer to Table 12-6 for parameter values



NOTETest the RF signal with the cables connected to the LMU. Perform this test on ports used for LMU location processing that are connected to the multicoupler. Do not perform this test on unused LMU ports that are not connected.

NOTEYou must perform this test on both the Cellular (850 MHz) and PCS (1900 MHz) bands.

Record your test results on your copy of Table 12-8.

12. Perform actions according to Table 12-1 to evaluate and respond to failed and indeterminate results.For more detailed instructions about how to evaluate the data entered in Table 12-8, refer to Section 12.5: BIT 6 Test Evaluation .

13. If the result is “indeterminate signal,” return to Step 1 and perform the entire test again using a different channel.

Table 12-1: Troubleshooting Test Results

Display Meaning Action

IndeterminatePort

Port is not active or is missing configuration data

Check to see LMU port gain is populated and port is active in SCOUT.

IndeterminateGain

Gain is not set properly, and is out of the range of acceptable values for type of LMU

Troubleshoot SCOUT survey information. Use maximum gain setting for the 3G LMU: 43 dB for high gain.

Pass Good No action.

Fail Noise floor is too close to power; cable may be disconnected

Connect the cable if necessary.

Bad Weak signal on a port (1) Check SCOUT configuration. (port, cables, gain settings)

(2) Check physical connectivity.

IndeterminateSignal

Too many signals/carriers on the channel when test was conducted

Rerun test at different frequency.

IndeterminateNoise

Noise floor is too high Check for faulty cable connectors.



14. Repeat Step 6 through Step 12 or Step 13 for each port with an RF cable connected.

15. When the test is complete:

a) Type etest 15 1 R to place the LMU into the Enabled mode.

b) Reconnect the T1 line if it was disconnected in Step 3.

c) When the test is complete, reset the LMU.

12.3 BIT 6 Command Parameters

This section describes the various parameters used in the BIT 6 command and in the other commands used in conjunction with BIT 6.

Figure 12-2 shows the locations of the uplink ports on the 3G LMU.

Figure 12-2: 3G LMU Uplink Port Locations

Table 12-2 provides the parameter values for the gain command.

Table 12-3 provides the parameter values for the ?gain command.

Table 12-2: Port Gain Command Parameters


<band> 1=Cellular (850 MHz), 3=PCS (1900 MHz)

<port> Enter a port value from 1 through 6

<value> Enter a gain value from 17 through 43



Table 12-4 provides the parameter values for the active_port command.

Table 12-5 provides the parameter values for the ?active_port command.

Table 12-6 provides the parameter values for the bit 6 command.

Table 12-3: Verify Port Gain Command Parameters


<band> 1=Cellular (850 MHz), 3=PCS (1900 MHz)

<port> Enter a value from 1 through 6

Table 12-4: Port Activation Command Parameters


<band> 0 = Cellular (850 MHz), 1=PCS (1900 MHz)


<active> 0 = inactive, 1 = active

Table 12-5: Verify Port Activation Command Parameters


<band> 0 = Cellular (850 MHz), 1=PCS (1900 MHz)


Table 12-6: Bit 6 Command Parameters


<dsp> Enter DSP 1,2,3, or 4, 255 =DSP chosen by the LMU

<band> Uplink: 2=Cellular (850 MHz), 3=PCS (1900 MHz)

Downlink: 4=Cellular (850 MHz, 5=PCS (1900 MHz)



Table 12-7 provides the BIT 6 commands for Cellular (850 MHz) and PCS (1900 MHz).

<first channel> 128-251=Cellular

512-810=PCS

NOTEIf the appropriate channels for testing cannot be obtained from the local market, the user may perform the testing using the generic commands provided in Table 12-7.

NOTEThis method may result in less reliable results. Use it only be used when actual cell site receiver channel numbers are not available.

<# of channels> 1-16

<port> UPLINK: 0-5, 255=best of all ports

DOWNLINK: 0

Table 12-7: Generic BIT 6 Commands

Band Air Interface Sub Band Command

Cellular (850 MHz)

GSM A” bit 6 255 2 128 16 <port>

A bit 6 255 2 152 16 <port>

bit 6 255 2 203 16 <port>

bit 6 255 2 233 16 <port>

bit 6 255 2 236 16 <port>

Table 12-6: Bit 6 Command Parameters




PCS (1900 MHz)

GSM A bit 6 255 3 544 16 <port>

D bit 6 255 3 594 16 <port>

B bit 6 255 3 644 16 <port>

E bit 6 255 3 694 16 <port>

F bit 6 255 3 720 16 <port>

C bit 6 255 3 777 16 <port>

Table 12-7: Generic BIT 6 Commands

Band Air Interface Sub Band Command



12.4 BIT 6 Test Results Log

Table 12-8: Power Measurement Test (BIT 6) Results Log

Cellular (850) Port

PCS (1900) Port



12.5 BIT 6 Test Evaluation

For each port, review the BIT 6 test results. The possible results are pass, fail, and indeterminate.

Exhibit 12-1 shows an example of the output generated by the BIT 6 test on the LMU console for a test using 16 channels:

Exhibit 12-1: BIT 6 Indeterminate Test Results

Noise Level: Channel 520 - 535: -92 -94 -94 -94 -94 -94 -94 -94 -94 -94 -95 -94

-94 -95 -94 -94

Noise Floor: Channel 520 - 535: -93 -96 -96 -96 -96 -96 -96 -96 -96 -96 -96 -95

-96 -96 -96 -96

Result: Indeterminate, port not active

Where:

• Noise Level — is the measured noise level (with receiver un-muted) in dBm for each channel.

• Noise Floor — is the measured noise level (with receiver muted) in dBm for each channel.

Check calculation in dBm. These dBm values are generally negative integers.

Pass

If all ports pass, the power measurement test results are good. Proceed to Section 13: Perform the DSP and CP Memory Tests.

Fail

If one or more ports fail on either band, refer to Section 15: Troubleshooting for instructions on finding and correcting problems.

Indeterminate

If the result is indeterminate, then the test did not reach a reliable conclusion. The possible indeterminate results are:

• indeterminateGain: configured gain was greater than actual gain

• indeterminateNoise: expected noise level too close to noise floor

• indeterminateSignal: measured channels contains signal

• indeterminatePort: port was not active (gains not set)



NOTEIf the results are indeterminate after troubleshooting, contact the TAC.





13 PERFORM THE DSP AND CP MEMORY TESTS

13.1 Test The DSP Memory

This section defines the test for evaluating the DSP memory. The DSP memory test uses Built In Test (BIT) 4 of the LMU console port command set. The test checks the condition of DSP memory modules 1 through 4.

13.1.1 BIT 4 Command

Following is the BIT 4 command format:BIT 4 <N>

where N is the number of the DSP memory module being tested.

NOTEIn each of these tests, the display will show the DSP going offline and then online again. This is normal behavior.

13.1.2 Procedure

To check status of the DSP memory:


NOTEThe BIT 4 test will not yield accurate results unless the LMU is IN TEST. After placing the LMU IN TEST, wait 65 seconds before entering BIT 4 commands.



2. Type bit 4 1 R to test DSP memory module 1. One of the following responses appear: BIT 4 No Failure

- or -BIT 4 Data Bus Failure

- or -BIT 4 Address Bus Failure

- or -BIT 4 Device Failure

3. Repeat this test for DSP memory modules 2-4. The command syntax is bit 4 x R, where x is a number between 2 and 4.

4. Place the LMU into the Enabled mode by typing etest 15 1 R

13.1.3 Evaluation

• If all of the DSP memory tests produce the message No Failure, proceed to Section 13.2: Test The CP Memory.

• If the result displays any message indicating failure for any test (for example Data Bus Failure), the LMU must be replaced.

13.2 Test The CP Memory

This section defines the procedure for evaluating the CP (control processor) memory. The CP memory test uses Built-in Test (BIT) 5 of the LMU console port command set. The test checks the condition of the control processor memory.

NOTEThe LMU is unresponsive for an average of 11 minutes while the test is performed.

13.2.1 BIT 5 Command

Following is the BIT 5 command:BIT 5



13.2.2 Procedure

To test the CP memory:


2. Type bit 5 R.

NOTEThe LMU reboots before the test results display.

3. Review the status response is: CP RAM Memory Test Passed

orCP RAM Memory Test Failed at 0x...

where 0x is some memory address.

4. Type etest 15 1 R to place the LMU into the Enabled mode.

13.2.3 Evaluation

If the status response is CP RAM Memory Test Failed, the LMU must be replaced.





14 GSM DOWNLINK ANTENNA TESTS

14.1 Introduction

After installing the GSM downlink antenna at the cell site, perform the tests in this section using the Pro Comm window on the LMU to verify that the GSM system is functioning correctly.

NOTEThe LMU cannot perform location processing while performing the tests in this section.

14.2 GSM Downlink Antenna Power Test

NOTEThe GSM downlink antenna power test is no longer supported. It is replaced by a combination of the power measurement test (BIT 6) and the GSM beacon search test.

14.3 GSM Beacon Search

Perform a GSM Beacon Search test to determine whether the LMU is receiving the proper channel information from the GSM downlink antenna. Perform the test for each band in use.

The GSM Beacon Search test command is: searchbcn <band> R

Where: <band> is

• cell for cellular (850 MHz) band



• pcs for PCS (1900 MHz) band

• both to test cellular (850 MHz) and PCS (1900 MHz) bands

• none to turn off beacon search

1. To perform the GSM Beacon Search test, use one of the following commands:

– To test channels in the Cellular (850 MHz) band, type:searchbcn cellR.

– To test channels in the PCS (1900 MHz) band, type:searchbcn pcsR.

NOTEThe test could take up to 15 minutes to return a result.

2. If the test passes, a message displays, stating one or more beacons are found in each sector. The following is an example: LMU>search of Beacon Ranges has completed

In selftest, found 1 beacons

3. If the test fails, a message stating no beacons were found displays. Following is an example: LMU>search of Beacon Ranges has completed

In selftest, found 0 beacons

NOTEThe searchbcn both command runs both of the above tests.

4. If the test passes (or both tests pass for dual-band installation), the GSM downlink antenna installation is complete.

5. If any test fails, see Section 15.6.4: Troubleshoot the GSM Downlink Antenna Beacon Search Test Failure.



14.4 System Level Testing

Completing the above procedures indicates that the LMU is ready for system integration. Contact the EMS operator to verify LMU network communications.





15 TROUBLESHOOTING

15.1 Overview

This section provides procedures for troubleshooting 3G LMU installations and operations, as well as the failures that occur most often during LMU operation. Use the information in this section to assess, identify, diagnose, and correct the problem.

NOTEThis troubleshooting document assumes the technician is familiar with the GPS Antenna Basic Rule Set. (For details, see the Site Preparation Requirements.)

15.2 Common Failures

NOTEUse the alarms from the last seven days as a basis for troubleshooting.

The following is a list of the most common failures with the LMU or its installation:

– LMU Node Unreachable Alarm

– GPS Antenna Failure Alarm

– GPS Holdover Alarm

– GPS Timing Anomaly Alarm



15.3 Problem Detection and Correction of Common Failures

15.3.1 LMU Node Unreachable Alarm

Problem — The EMS displays the tpOssNodeUnreachable alarm.

Failure Condition —The LMU is down or the LMU is not responding to SNMP queries and it is declared down.

Likely Cause —

– Bad DS0 mapping

– Bad DS0 link

– Failed LMU

– Not configured in SCOUT

Description of Failure — The LMU is not responding to SNMP queries. When an LMU is down, the WLS system is degraded, but still operational.

Possible Corrective Actions — (Perform each step in sequence until the problem is fixed)

1. Verify SCOUT settings with the Market SCOUT Administrator for this site.

2. Verify the carrier DSX operation line coding and bit rate are as specified end to end.

3. Ensure DS0 Mapping is correct between SCOUT and local transport

4. Ensure problem affects only one DS0 and not full T1.

5. Verify that LMU strapping is correct (Refer to Section 10: Set Up Strapping).

If Then

There is an active tpOssNodeUnreachable alarm for this LMU.

Troubleshoot the LMU Node Unreachable alarm.

There is a GPS Antenna failure alarm.

Troubleshoot the GPS Antenna Failure alarm.

There is no GPS Antenna failure alarm, or you have finished troubleshooting it.

Troubleshoot the remaining alarms as needed:

•Timing Anomaly

•Holdover



6. Perform DS0 remote loopback testing between LMU and SMLC (input).

7. If the loopback testing fails, verify that LMU strapping is correct. If necessary, troubleshoot the transport network.

8. If the loopback test passes, replace the LMU. (Refer to Section 4: LMU Pre-Installation and the sections following it.)

15.3.2 GPS Antenna Failure Alarm

Problem — The Console Port Alarm displays the FAULT_GPS_ ANTENNA alarm.

Failure Condition — GPS antenna DC current draw out of range.

Description of Failure — LMU sourcing too much or too little DC current to the GPS antenna.

Likely Cause — This condition occurs due to an internal LMU malfunction or a problem in the GPS signal path, as well as a lost GPS receiver timestamp. The condition can occur when a problem exists with the following components:

– GPS splitter

– GPS antenna on-board LNA

– Lighting arrestor

– Transmission cable and/or connectors

– GPS antenna

NOTEWhen this alarm occurs alone, the severity of the alarm is minor; if it occurs in addition to other alarms, it may indicate other equipment problems. Look for related GPS alarms.

Possible Corrective Actions —

NOTEThis troubleshooting procedure outlines the process for a two segment installation without an amplifier: one cable segment runs between the LMU and the surge arrestor and the other segment runs between the surge arrestor and the antenna.

1. Disconnect the GPS transmission feed line at the LMU GPS port.



2. Connect a test antenna and transmission line to the LMU GPS port and observe the alarm status. If the alarm does not clear, proceed to Step 24.

3. Disconnect the test antenna and transmission line from the LMU GPS port.

4. Verify the GPS feed voltage on LMU front panel connector is 5VDC ± 10%.

5. If the above voltage is not in specification, proceed to Step 24.

6. Disconnect the cable from the protected side (LMU side) of the surge arrestor

NOTE

Do not reconnect GPS feed line to LMU front panel until reaching Step 17.

7. Check the resistance (Ohms) between the center pin and shield of the fully disconnected cable between LMU and surge arrestor.

8. If the resistance is not infinity, replace the N-type connector and retest. Otherwise, jump to Step 11.

9. If the cable assembly still does not read infinity, replace the SMA connector and retest. Otherwise, jump to Step 11.

10. If after replacing both connectors, the resistance is not infinity, replace the cable.

The cable has been contaminated by water leakage due to failed weatherproofing, and must be replaced.



NOTEIf the surge arrestor is located outdoors, the weatherproofing may be compromised and the cable may need to be replaced. The technician must assess the likelihood of moisture damage and replace cable and connectors accordingly.

It is recommended to replace the cable and connectors at the outset if the run is relatively short and accessible, versus replacing the connectors and then determining that the cable requires replacement. Only for long or inaccessible cable runs is it advisable to retain the cable due to the difficulty in ascertaining with certainty that moisture has not compromised the cable.

Refer to

11. Remove the cable from the unprotected side (antenna side) of the surge arrestor.

12. Disconnect the cable from the GPS antenna.

13. Check the resistance between the center pin and shield of the fully disconnected cable. It should read infinity. If so, jump to Step 17.

14. If not, replace the N-type connector on the surge arrestor side of the GPS antenna cable, and retest.

15. If the cable assembly still does not read infinity, replace the antenna side N-type connector.

16. If after replacing both connectors, the resistance reading is not infinity, replace the cable.

The cable has been contaminated by water leakage due to failed weatherproofing, and must be replaced.

17. Reconnect the GPS cable from the protected side of the surge arrestor (LMU side) to the GPS port on the LMU.

18. Connect a test antenna and transmission line to the unprotected side of the surge arrestor and observe the alarm status.

19. If the alarm does not clear, replace the surge arrestor and jump to Step 21.



20. If the alarm clears, replace the GPS antenna.

21. Reconnect the GPS cable from the antenna to the unprotected side (antenna side) of the surge arrestor.

22. Reset the LMU. The alarm should now be cleared.

23. If the alarm has not cleared recommission the LMU.

24. If the alarm persists, replace the LMU (Refer to Section 4: LMU Pre-Installation and the following instructions).

25. Replace weatherproofing at the GPS antenna and the surge arrestor (if outdoors) taking special care to ensure that proper weather protection procedures and materials are used to prevent reoccurrence.

Additional Troubleshooting IssuesThe troubleshooting technician should be aware of the conditions that could influence problem solving for the LMU.

– Depending on the severity of the problem, you may discover that the LMU has lost its 5VDC on the GPS front panel connector—it may or may not return after reset.

– Depending on how long the LMU has been out of contact with the GPS Constellation, you may need to wait as much as a half hour before the LMU comes up and the alarm should clear immediately

– Water leakage may not be visible, since the cable shield acts like a wick drawing any moisture away from the connector and deeper inside the cable

– When cable is contaminated with water, you may see the resistance value rise over time as the cable dries out— it may even appear to “fix itself” as the resistance eventually reaches near infinity.

– Losses in the GPS cable assembly may prevent 5VDC from reaching the antenna. If the surge arrestor is mounted outdoors, and the weatherproofing has been compromised, it is likely that internal corrosion has occurred. Since the integrity of the cable can not be assessed, it is advisable where possible to replace the cable assembly.



15.3.3 GPS Holdover Alarm

NOTEIncorrect GPS Antenna Position problems can often be difficult to diagnose. Performing an LMU GPS Self Survey is recommended in order to compare results with the recorded GPS positions performed in this procedure. Refer to the GPS Self-Survey Operations Manual.

Problem — The Console Port Alarm displays the FAULT_GPS_ HOLDOVER alarm.

Failure Condition — Engine has not found qualified satellites or no signal present.

Description of Failure — The LMU cannot lock on to the minimum number (4) of GPS satellites and the LMU GPS receiver board has been in holdover for over 15 minutes.

Likely Cause — This condition occurs due to incorrect coordinates, an internal LMU malfunction, or a problem in the GPS signal path. The internal LMU malfunction can occur when the GPS receiver time stamp is lost.

Possible Corrective Actions — Perform each step in sequence.

NOTEThe AMSL value is based on an ellipsoid model.

1. Take a new GPS latitude, longitude and AMSL survey with a hand held unit, and with differential correction enabled, (WAAS).

2. Run a ?gps command, for D shell, at the console port. Compare the latitude, longitude and AMSL to the hand held survey results. (Refer to Appendix B: Console Port User Guide.

3. If the results are off by more than 50 meters, inform the SCOUT operator of the new coordinates so that SCOUT can be updated, and continue the troubleshooting process.

4. Disconnect the LMU from the DS0 connection (T1 connection to the SCOUT server).

5. Use the gps command to load the handheld survey data (latitude, longitude, and AMSL) into the LMU.

6. Reset the LMU with DS0 disconnected (Refer to Appendix B: Console Port User Guide for correct use of the proc command).



7. Run alarms command to verify that the GPS Holdover Alarm has cleared.

8. Reconnect the DS0 and reset the LMU.

9. Check the antenna position for 75% or greater sky aperture, in accordance with the GPS antenna location rule set.

10. If the sky aperture is not adequate, move the antenna to meet the 75% requirement.

11. If problem cannot be resolved, replace the LMU. (Refer to Section 4: LMU Pre-Installation and the following sections.)

15.3.4 GPS Timing Anomaly Alarm

NOTEIncorrect GPS Antenna Position problems can often be difficult to diagnose. Performing an LMU GPS Self Survey is recommended in order to compare results with the recorded GPS positions performed in this procedure. Refer to the GPS Self-Survey Operations Manual.

Problem — The Console Port Alarm displays the FAULT_GPS_TIMING_ANOMALY alarm.

Failure Condition — GPS signal is present, but there is a timing disparity

Description of Failure — A problem exists with the GPS timing. The LMU may not participate in location processing.

Likely Cause — This condition occurs due to incorrect coordinates, an internal LMU malfunction, or a problem in the GPS signal path. The internal LMU malfunction can occur when the GPS receiver time stamp is lost. May also be caused by an error in the GPS antenna survey (latitude, longitude and AMSL).


NOTEThe AMSL value is based on an ellipsoid model.

1. Take a new GPS latitude, longitude and AMSL survey with a hand held unit, with differential correction enabled, (WAAS).



2. Run a ?gps command at the console port. Compare the latitude, longitude and AMSL to the hand held survey results.

3. If the results are off by more than 50 meters, inform the SCOUT operator of the new coordinates so that SCOUT can be updated, and continue the troubleshooting process.

4. Disconnect the LMU from the DS0 connection (T1 connection to the SCOUT server).

5. Use the gps command to load the handheld survey data (latitude, longitude, and AMSL) into the LMU.

6. Reset the LMU with DS0 disconnected (Refer to Appendix B: Console Port User Guide for correct use of the proc command).

7. Run alarms to verify that the GPS Holdover Alarm has cleared.

8. Reconnect the DS0 and reset the LMU.

9. Check the antenna position for 75% or greater sky aperture, in accordance with the GPS antenna location rule set.

10. If the sky aperture is not adequate, move the antenna to meet the 75% requirement.

If problem cannot be resolved, replace the LMU. (Refer to Section 4: LMU Pre-Installation and the following sections.)

15.3.5 Fan Failure Alarm

Problem — The Console Port Alarm displays the FAULT_FAN_SPEED alarm.

Failure Condition — There is a problem with the fan

Description of Failure — The fan is not operating at the proper speed.

Likely Cause — This condition may occur due to fan malfunction or because an object is interfering with normal fan movement.


1. Inspect the LM for unusual fan noise or slow turning fan blades.

2. If objects are interfering with fan movement, remove them. Power down the LMU and wait for 2 minutes before restoring power.



3. If there is no fan obstruction, or of clearing the obstruction does not reset the alarm, the LMU must be replaced. (Refer to Section 4: LMU Pre-Installation and the following sections.)

15.4 Assessing LMU Checkout Failures

If the LMU fails checkout during an installation (or fails during operation), use the information in this section to assess the problem.

Observe the LMU and its surroundings before attempting to diagnose LMU failure conditions. Perform the following and note any abnormal conditions:

1. Verify that the LMU is secure in its rack or enclosure.

2. Confirm that the LMU rear-panel fans are unobstructed and are turning freely.

3. Examine the LMU housing to verify that it is free of environment hazards such as water and moisture.

4. Confirm that the LMU room temperature is between +5°C to +50°C (-5°C to +65°C short term).

5. Inspect all connections between the LMU and other devices (RF antennas, GPS antenna, T1, power, and ground).

6. Inspect for any physical damage to the LMU or any supporting components.

7. Note the status of the LMU status LEDs. For information about the status LEDs, see Section 15.5.1: LED Status.

8. Note any outstanding alarms on the LMU. See Section 15.4.1: Alarms.

9. If possible, contact the EMS operator to request information on any outstanding alarms for the LMU maintained at the EMS.

15.4.1 Alarms

Alarms can be accessed using the console port.

Use the laptop computer to enter console port commands to display active alarm messages. To display alarm messages on the LMU console port:

1. Connect the console port cable (Cable Assy, AEP, RJ11 to DB9F, 72 inch, part 18407R) from the LMU to the laptop computer.



2. Boot the laptop and configure ProComm as described in Appendix B: Console Port User Guide.

3. Type alarms in the ProComm Chat window to display real-time status messages.

4. If any active alarms are displayed, use the information in Table 15-1 to diagnose the cause and the appropriate action to correct it.

15.5 Diagnosis of LMU Checkout Failures and Recommended Actions

Once you have gathered the available information, use Table 15-1 to determine the most likely failure condition and follow the recommended actions to troubleshoot and correct the problem. Table 15-1 contains the following information:

• LED status

• Console port alarm messages

• Failure conditions

• Descriptions

• Recommended actions

• Fault codes

NOTEUse the information in the first four columns to diagnose the failure condition, then follow the procedure given in the Recommended Actions column for that condition.

NOTEIf multiple alarms appear together, troubleshoot the most serious alarm first.

15.5.1 LED Status

The LED Status column in Table 15-1 shows the status conditions displayed on the three LMU front panel status LEDs. The LMU status LEDs represent the following states:

STATE LED:



• Solid Green - The LMU is in op status UP (operational) or IN TEST.

• Not lit - LED is not receiving power or the LED has failed.

• Flashing Green - LMU is initializing.

• Solid Yellow - The LMU is operating in a degraded mode.

• Solid Red - The LMU is down due to a critical alarm.

ALARM LED:

• Solid Green - There are no values in standingFaults.



• Solid Yellow - There are values in standingFaults, but the LMU is participating in locations.

• Red - The LMU is in critical alarm and not participating in locations.

GPS LED:

• Solid Green - No GPS failure conditions exist.



• Solid Yellow - The holdover duration is non-zero but less than one half hour and currentValues.gps_failures is zero.

• Flashing Red - There is a standing antenna fault regardless of the contents of currentValues.gps.

• Solid Red - The holdover duration is more than one half hour or currentValues.gps_failures is non-zero. The LMU is not participating in locations due to timing error.

See Table 15-1 for the LED states associated with the failure conditions and alarms.

When multiple alarms occur, the status LED states are determined by the most serious alarm.

NOTEIf a status LED displays a color for an alarm other than the color indicated by the table, contact the TAC.



15.5.2 Console Port Alarm Message

The Console Port Alarm column contains alarm codes that display on the console port interface. The LMU refers to each alarm message as a fault. For example, FAULT_DSP_MEMTEST_FAIL is an alarm message.

Some failures occur without generating an alarm message. Those conditions are listed in Table 15-1 as “No LMU Alarm”.

Refer to Section 15.4.1: Alarms, for instructions on how to locate alarms by performing the alarms command on the ProComm chat window.

NOTEFor more information, see the Repair and Return Procedure (document 7200-1712-0000).

15.5.3 Failure Conditions

This column contains a short description of the failure conditions including RF, T1, GPS and signal problems, boot errors, internal component failures, external component failures and environmental problems.

15.5.4 Description

This column contains a detailed summary of LMU status condition and describes the effect of the condition on LMU and WLS operations.

15.5.5 Recommended Action

The Recommended Action column provides repair steps for each failure listed.

15.5.6 Fault Code

When the recommended action appearing in Table 15-1 indicates that you must replace the LMU, enter the Fault Code in the appropriate field on the Field Return Request Form (Document Number: 2222-1213-0000).

NOTEWhen responding to alarms indicating SMLC, T1 or GPS errors, make sure no software downloads or testing is occurring before taking corrective action



NOTEThe Alarm, State and GPS LEDs remain red throughout the initialization (boot) process.

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roble

m e

xis

ts w

ith t

he

GPS

tim

ing.

The

LMU

will

not

par

tici

pat

e in

loca

tion

pro

cess

ing.

1.T

rouble

shoot

The

GPS

Ante

nna

Path

, 15

.6.3

: Tro

uble

shoo

t the

G

PS A

nten

na P

ath.

2.C

hec

k t

he

GPS

lat

itude,

lo

ngit

ude,

and a

ltit

ude.

Ref

er

to S

ectio

n 11

: Set

GPS

Pa

ram

eter

s.3.

Res

et t

he

LMU

.

4.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

0

9

Ala

rm L

ED =

ye

llow

Stat

e LE

D =

red

GPS

LED

= r

ed

FAU

LT_G

PS_H

OLD

OV

ER**

GPS

sig

nal

qual

ity

deg

raded

The

LMU

can

not

lock

on

the

min

imum

num

ber

(4

) of

GPS

sat

ellite

s an

d t

he

LMU

GPS

rec

eive

r boar

d

has

bee

n in h

old

ove

r fo

r ove

r 3

0 m

inute

s.

This

cond

itio

n o

ccurs

due

to a

n inte

rnal

LM

U

mal

funct

ion o

r a

pro

ble

m

in t

he

GPS

sig

nal

pat

h.

The

inte

rnal

LM

U

mal

funct

ion c

an o

ccur

when

the

GPS

rec

eive

r ti

me

stam

p is

lost

.

1.T

rouble

shoot

The

GPS

Ante

nna

Path

. Se

e Se

ctio

n 15

.6.3

: Tr

oubl

esho

ot th

e G

PS

Ant

enna

Pat

h.2.

Chec

k t

he

GPS

lat

itude,

lo

ngit

ude,

and a

ltit

ude.

Ref

er

to S

ectio

n 11

: Set

GPS

Pa

ram

eter

s.3.

Res

et t

he

LMU

.

4.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

1

0

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

y1

5–1

9

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

Stat

e LE

D =

red

GPS

LED

= r

ed

FAU

LT_G

PS_S

ERIA

L_C

OM

MS

GPS

ser

ial

port

err

ors

Se

rial

port

err

ors

are

d

etec

ted

.

LMU

will not

par

tici

pat

e in

lo

cati

on p

roce

ssin

g.

1.R

eset

the

LMU

.

2.C

hec

k t

he

GPS

lat

itude

and

longit

ude.

Ref

er t

o S

ectio

n 11

: Se

t GPS

Par

amet

ers.

3.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

1

3

Ala

rm L

ED =

red

Stat

e LE

D =

red

FAU

LT_S

AM

PLE_

PLL

_UN

LOC

KED

LM

U A

/D

prob

lem

T

he

LMU

Anal

og-t

o-D

igit

al

conve

rsio

n r

ate

is n

ot

lock

ed.

1.R

eset

the

LMU

.

2.If

the

pro

ble

m c

annot

be

reso

lved

rep

lace

the

LMU

.

LMU

1

5

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

15

–20

Confi

den

tial

and P

ropri

etar

y • 7

22

1-2

528-0

000 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

FAU

LT_N

O_B

EAC

ON

S_FO

UN

DLM

U

dete

ctio

n pr

oble

m

The

LMU

fai

led t

o loca

te a

bea

con c

han

nel

fro

m t

he

GSM

dow

nlink a

nte

nna

on

any

sear

ch r

ange.

1.R

efer

to S

ectio

n 15

.6.4

: Tr

oubl

esho

ot th

e G

SM

Dow

nlin

k A

nten

na B

eaco

n Se

arch

Tes

t Fai

lure

, an

d

per

form

the

appro

pri

ate

trouble

shooti

ng p

roce

dure

s bas

ed o

n t

he

type

of

GSM

an

tenna.

2.T

he

range

pro

gra

mm

ed into

th

e LM

U is

inco

rrec

t.C

onta

ct

the

SCO

UT

Oper

ator

and

chan

ge

the

confi

gura

tion s

o

that

the

LMU

is

confi

gure

d f

or

the

pro

per

sea

rch r

ange.

3.Ther

e ar

e no b

eaco

ns.

C

om

munic

ate

wit

h t

he

cust

om

er a

nd d

eter

min

e if

the

loca

l ar

ea is

curr

entl

y ru

nnin

g

GSM

pro

cess

ing.

If n

ot,

ignore

th

e er

ror

unti

l G

SM p

roce

ssin

g

beg

ins.

4.R

epla

ce t

he

LMU

.

LMU

1

7

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

y1

5–2

1

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

FAU

LT_T

1_B

LUE_

AL

AR

MT

1

pro

ble

ms

The

T1

dat

a pat

h is

tem

pora

rily

corr

upte

d d

ue

to a

fra

min

g e

rror.

T

empora

ry loss

of

T1

si

gnal

. So

me

dat

a m

ay b

e lo

st.

1.R

eset

the

LMU

.

2.In

spec

t th

e ce

ll s

ite

T1

dat

a pat

h.

3.V

erif

y T

1 h

ealt

h.

4.R

econfi

gure

the

DS0

as

signm

ent.

See

Sec

tion

4:

LMU

Pre

-Ins

talla

tion

for

an

exam

ple

, or

Sect

ion

10: S

et U

p St

rapp

ing .

LMU

1

9

Ala

rm L

ED =

red

Stat

e LE

D =

fl

ashin

g y

ello

w

FAU

LT_T

1_R

ED_A

LA

RM

T1

pro

ble

ms

•T

1 c

able

is

not

connec

ted

•Fa

ult

y T

1 c

able

or

connec

tion

•T

1 B

it e

rror

rate

ex

cess

ive.

•T

1 s

trap

pin

g n

ot

confi

gure

d.

DS0

not

assi

gned

.

1.In

spec

t th

e ce

ll s

ite

T1

dat

a pat

h.

2.C

hec

k t

he

LMU

T1

connec

tion

and T

1 s

trap

pin

g

confi

gura

tion. R

efer

to S

ectio

n 15

.6.5

: Cor

rect

ing

T1

Prob

lem

s.3.

Res

et t

he

LMU

.

4.V

erif

y T

1 h

ealt

h.

5.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

2

0

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

15

–22

Confi

den

tial

and P

ropri

etar

y • 7

22

1-2

528-0

000 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

FAU

LT_T

1_Y

ELLO

W_A

LAR

MT

1

pro

ble

ms

The

T1

dat

a pat

h is

corr

upte

d d

ue

to L

MU

bit

sy

nch

roniz

atio

n e

rrors

or

fram

ing e

rrors

.

1.R

eset

the

LMU

.

2.In

spec

t th

e ce

ll s

ite

T1

dat

a pat

h.

3.R

econfi

gure

the

T1

DS0

as

signm

ent.

Ref

er t

o S

ectio

n 10

: Set

Up

Stra

ppin

g.4.

Ver

ify

T1

hea

lth.

5.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

2

1

Ala

rm L

ED =

red

if

all D

SP in f

ault

, oth

erw

ise

yellow

Stat

e LE

D =

red

if

all D

SP in f

ault

, oth

erw

ise

yellow

FAU

LT_D

SP_C

OM

MS_

FAIL

EDD

SP f

ailu

reLM

U D

igit

al-S

ignal

- Pr

oce

ssor

(DSP

) fa

ilure

.

The

solid r

ed L

ED

cond

itio

n o

ccurs

when

in

tern

al L

MU

mal

funct

ions

are

det

ecte

d. T

hes

e in

tern

al L

MU

mal

funct

ions

can o

ccur

when

all f

our

DSP

dat

a pat

hs

are

dow

n.

1.R

eset

the

LMU

.

2.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

2

6

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

y1

5–2

3

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

red

if

all D

SP in f

ault

, oth

erw

ise

yellow

Stat

e LE

D =

red

if

all D

SP in f

ault

, oth

erw

ise

yellow

FAU

LT_D

SP_D

OW

NL

OA

D_F

AIL

EDD

SP load

er

ror

DSP

dow

nlo

ad im

age

did

not

load

corr

ectl

y.

The

solid r

ed L

ED

cond

itio

n o

ccurs

when

in

tern

al L

MU

mal

funct

ions

are

det

ecte

d. T

hes

e in

tern

al L

MU

mal

funct

ions

can o

ccur

when

all f

our

DSP

dat

a pat

hs

are

dow

n.

1.R

eset

the

LMU

.

2.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

2

7

Ala

rm L

ED =

red

Stat

e LE

D =

red

FAU

LT_D

L_R

F_LO

_UN

LOC

KED

Signal

in

tegri

ty

test

pro

ble

m

The

DL

Rec

eive

r LO

Phas

e-Lo

ck-L

oop is

not

lock

ed.

1.R

eset

the

LMU

.

2.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

28

Ala

rm L

ED =

red

Stat

e LE

D =

red

FAU

LT_U

L_R

F_LO

_UN

LOC

KED

Signal

in

tegri

ty

test

pro

ble

m

The

UL

Rec

eive

r LO

Phas

e-Lo

ck-L

oop is

not

lock

ed.

1.R

eset

the

LMU

.

2.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

29

Ala

rm L

ED =

red

Stat

e LE

D =

ye

llow

FAU

LT_U

L_T

TG

_UN

LOC

KED

Si

gnal

in

tegri

ty

test

pro

ble

m

The

UL

TT

G P

has

e-Lo

ck-

Loop is

not

lock

ed.

1.R

eset

the

LMU

.

2.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

3

1

Ala

rm L

ED =

ye

llow

Stat

e LE

D =

ye

llow

FAU

LT_E

NC

LOSU

RE

_TEM

P En

closu

re

pro

ble

mEn

closu

re t

emp

erat

ure

has

ex

ceed

ed its

thre

shold

. 1.

Chec

k e

nvi

ronm

enta

l co

nd

itio

ns.

2.C

hec

k f

or

a fa

n f

ailu

re a

larm

.

3.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

3

2

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

15

–24

Confi

den

tial

and P

ropri

etar

y • 7

22

1-2

528-0

000 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

FAU

LT_F

AN

_SPE

EDFa

n

pro

ble

mFa

n is

not

op

erat

ing a

t pro

per

spee

d.

1.In

spec

t LM

U f

ans.

2.In

spec

t LM

U f

or

unusu

al f

an

nois

e or

slow

turn

ing f

an

bla

des

.

3.In

spec

t fo

r obje

cts

that

may

be

inte

rfer

ing w

ith r

outi

ne

fan

move

men

t.

4.If

obje

cts

are

inte

rfer

ing w

ith

fan m

ove

men

t, r

emove

them

. Po

wer

dow

n t

he

LMU

and a

llow

it

to c

ool dow

n f

or

twen

ty

min

ute

s bef

ore

res

tori

ng

pow

er.

5.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

3

3

Stat

e LE

D =

red

GPS

LED

=

flas

hin

g r

ed

FAU

LT_G

PS_A

NT

ENN

AG

PS a

nte

nna

DC

curr

ent

dra

w o

ut

of

range

The

LMU

is

sourc

ing t

oo

much

or

too lit

tle

DC

cu

rren

t to

the

ante

nna.

T

his

cond

itio

n o

ccurs

due

to a

n inte

rnal

LM

U

mal

funct

ion o

r a

pro

ble

m

in t

he

GPS

sig

nal

pat

h. T

he

inte

rnal

LM

U m

alfu

nct

ion

can o

ccur

when

a p

roble

m

exis

ts w

ith a

GPS

splitt

er.

1.R

epla

ce t

he

GPS

cab

le

connec

tors

and r

eapply

w

eath

er s

trip

pin

g.

2.T

rouble

shoot

The

GPS

Ante

nna

Path

. Se

e Se

ctio

n 15

.6.3

: Tr

oubl

esho

ot th

e G

PS

Ant

enna

Pat

h .3.

Res

et t

he

LMU

.

4.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

3

4

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

y1

5–2

5

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

FAU

LT_L

OC

AT

ION

S_P

REE

MPT

Loca

tion

capac

ity

exce

eded

Loca

tion r

eques

ts h

ave

exce

eded

LM

U p

roce

ssin

g

capac

ity.

Loca

tion p

roce

ssin

g

reques

ts a

re n

ot

bei

ng

pro

cess

ed.

Oth

er f

ailu

res

may

be

causi

ng t

his

pro

ble

m.

Inst

alls

1.U

se t

he

alar

ms

conso

le p

ort

co

mm

and

to v

iew

LM

U a

larm

s fo

r det

ails

. Fo

llow

the

reco

mm

end

ed a

ctio

ns

for

any

alar

ms

list

ed.

2.R

eset

the

LMU

.

3.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

Trou

bles

hoot

ing

duri

ng

oper

atio

n:T

he

LMU

oper

atin

g c

apac

ity

may

be

at its

pro

cess

ing lim

it.

Conta

ct

the

TA

C.

LMU

3

6

Ala

rm L

ED =

ye

llow

FAU

LT_L

OC

AT

ION

S_R

EFU

SED

Loca

tion

capac

ity

pro

ble

m

Thre

shold

cro

ssed

. Ex

cess

ive

num

ber

of

loca

tions

refu

sed.

If t

he

LMU

has

post

ed a

larm

s pre

viousl

y fo

r fa

ilure

s, a

nd w

as o

n

a def

erre

d m

ainte

nan

ce s

ched

ule

, re

pla

ce t

he

LMU

im

med

iate

ly.

LMU

3

7

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

15

–26

Confi

den

tial

and P

ropri

etar

y • 7

22

1-2

528-0

000 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

FAU

LT_L

OW

_GPS

_SA

TS_

TR

AC

KED

GPS

sig

nal

is

not

pre

sent

Thre

shold

cro

ssed

. N

um

ber

of

sate

llit

es

trac

ked

is

low

; ti

min

g

erro

rs m

ay b

e in

duce

d.

Loca

tion p

roce

ssin

g

accu

racy

may

be

affe

cted

.

1.T

rouble

shoot

The

GPS

Ante

nna

Path

. Se

e Se

ctio

n 15

.6.3

: Tr

oubl

esho

ot th

e G

PS

Ant

enna

Pat

h .2.

Chec

k t

he

GPS

lat

itude,

lo

ngit

ude,

and a

ltit

ude.

Ref

er

to S

ectio

n 11

: Set

GPS

Pa

ram

eter

s.

3.R

eset

the

LMU

.

4.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

3

8

Ala

rm L

ED =

ye

llow

FAU

LT_G

SM_D

ETEC

T_F

AIL

SFa

ilure

to

det

ect

GSM

si

gnal

s

•A

nte

nna

not

connec

ted

•LM

U h

as inco

rrec

t gai

n

•Pr

ob

lem

wit

h R

F re

ceiv

er.

1.C

hec

k a

nte

nna

connec

tions.

2.R

un S

IT t

est.

3.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

39

Ala

rm L

ED =

ye

llow

FAU

LT_P

OW

ER_S

UP

PLY_T

EMP

Pow

er

supply

te

mper

ature

Pow

er s

upp

ly b

oar

d h

as

exce

eded

its

thre

shold

te

mper

ature

.

1.C

hec

k e

nvi

ronm

enta

l co

nd

itio

ns.

2.C

hec

k f

or

an f

an f

ailu

re a

larm

.

3.Pe

rform

this

ste

p a

fter

ste

ps

1

and 2

pas

s. If

the

pro

ble

m

cannot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

4

1

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

y1

5–2

7

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Ala

rm L

ED =

ye

llow

FAU

LT_R

ECEI

VER

_TEM

P T

emper

atur

e p

rob

lem

Rec

eive

r boar

d h

as

exce

eded

its

thre

shold

te

mper

ature

.

1.C

hec

k e

nvi

ronm

enta

l co

nd

itio

ns.

2.C

hec

k f

or

an f

an f

ailu

re a

larm

.

3.Pe

rform

this

ste

p a

fter

ste

ps

1

and 2

pas

s. If

the

pro

ble

m

cannot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

4

2

Ala

rm L

ED =

ye

llow

Stat

e LE

D =

ye

llow

FAU

LT_S

CA

N_P

OIN

T_E

RR

OR

En

closu

re

scan

poin

t er

ror

A s

can p

oin

t er

ror

cond

itio

n c

an incl

ude:

•O

pen

door

•T

emper

ature

fai

lure

•Ex

tern

al f

an f

ailu

re

•En

closu

re c

ircu

lati

on f

an

failure

Insp

ect

the

LMU

envi

ronm

ent

for

the

scan

poin

t fa

ilure

. LM

U

43

Ala

rm L

ED =

red

FAU

LT_S

W_C

HEC

KS

UM

_FA

ILS

FLA

SH

chec

ksu

m

failure

LMU

fla

sh c

hec

ksu

m f

aile

d

duri

ng t

he

boot

pro

cess

. The

chec

ksu

m im

age

did

not

mat

ch t

he

calc

ula

ted

chec

ksu

m.

1.R

eset

the

LMU

.

2.D

ow

nlo

ad t

he

curr

ent

vers

ion

of

the

FLA

SH.

3.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

4

4

Tab

le 1

5-1

: T

rou

ble

sh

oo

tin

g T

ab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

•Rev

isio

n H

• C

onfi

den

tial

and P

ropri

etar

y1

5–2

8

3G

LM

U In

stal

lati

on G

uid

e, N

ort

h

Ala

rm L

ED =

ye

llow

FAU

LT_T

1_L

INE_

QU

ALI

TY

T1

pro

ble

ms

The

T1

qual

ity

met

rics

hav

e bee

n v

iola

ted.

1.R

eset

the

LMU

.

2.In

spec

t th

e ce

ll s

ite

T1

dat

a pat

h.

3.R

econfi

gure

the

T1

DS0

as

signm

ent.

Ref

er t

o S

ectio

n 10

: Set

Up

Stra

ppin

g.4.

Ver

ify

T1

hea

lth.

5.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

4

5

Ala

rm L

ED =

ye

llow

FAU

LT_L

MU

_TEM

PT

he

inta

ke

air

tem

per

ature

ex

ceed

s th

e te

mper

ature

th

resh

old

.

The

inta

ke

air

tem

per

ature

is

outs

ide

the

oper

atin

g

tem

per

ature

ran

ge

for

the

LMU

.

Inve

stig

ate

and r

epai

r en

closu

re

tem

per

ature

contr

ol.

46

Ala

rm L

ED =

ye

llow

FAU

LT_G

PS_N

EW_P

OSI

TIO

ND

etec

tion

pro

ble

mT

he

lati

tude

and longit

ude

report

ed b

y th

e LM

U a

s it

s cu

rren

t lo

cati

on is

inco

rrec

t

Usi

ng t

he

conso

le p

ort

, per

form

a

GPS

Sel

f Su

rvey

tes

t. F

or

inst

ruct

ions,

see

Sec

tion

15.6

.9:

GPS

Sel

f-sur

vey

Test

.

LMU

4

7

Ala

rm L

ED =

ye

llow

Stat

e LE

D =

red

GPS

LED

= r

ed

FAU

LT_G

PS_L

OW

_QU

ALI

TY

GPS

tim

ing

pro

ble

mLM

U d

oes

not

mee

t ti

min

g

spec

ific

atio

ns.

1.If

FA

ULT

_LO

W_G

PS_S

AT

S_T

RA

CK

fa

ult

is

pre

sent,

then

ther

e m

ay

not

be

enough s

atel

lite

s. S

ee

LOW

....

1.V

erif

y G

PS loca

tion c

oord

inat

es

and r

un s

elf-

surv

ey if

inco

rrec

t.

2.R

epla

ce L

MU

48

Tab

le 1

5-1

: T

rou

ble

sho

oti

ng

Tab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

•Rev

isio

n H

• C

onfi

den

tial

and P

ropri

etar

y1

5–2

9

3G

LM

U In

stal

lati

on G

uid

e, N

ort

h

Ala

rm L

ED =

ye

llow

FAU

LT_C

APA

BIL

ITY

_MIS

SIN

G

Com

munic

ati

on

pro

ble

m

The

LMU

har

dw

are

at t

he

site

wit

h r

egar

d t

o e

ither

hig

h o

r lo

w b

ands

is

dif

fere

nt

from

the

SCO

UT

co

nfi

gura

tion e

stab

lish

ed

for

the

site

.

1.V

erif

y si

te s

urv

ey a

nd

inst

alla

tion a

nd c

han

ge

the

SCO

UT

confi

gura

tion.

2.V

erif

y th

e R

F ban

d f

or

the

LMU

. If

an L

MU

is

inst

alle

d t

hat

is

on

the

wro

ng R

F ban

d, re

pla

ce t

he

LMU

wit

h o

ne

that

is

oper

atin

g

on t

he

corr

ect

RF

ban

d.

LMU

5

8

Ala

rm L

ED =

ye

llow

FAU

LT_E

1_R

UA

1_A

LAR

ME1

pro

ble

ms

The

E1 d

ata

pat

h is

tem

pora

rily

corr

upte

d d

ue

to a

fra

min

g e

rror.

T

empora

ry loss

of

E1

signal

. So

me

dat

a m

ay b

e lo

st.

1.R

eset

the

LMU

.

2.In

spec

t th

e ce

ll s

ite

E1 d

ata

pat

h.

3.V

erif

y E1

hea

lth.

4.R

econfi

gure

the

DS0

as

signm

ent.

See

Sec

tion

4:

LMU

Pre

-Ins

talla

tion

for

an

exam

ple

, or

Sect

ion

10: S

et U

p St

rapp

ing.

LMU

6

0

Ala

rm L

ED =

red

Stat

e LE

D =

red

FAU

LT_E

1_R

CL_

ALA

RM

E1

pro

ble

ms

•E1

cab

le is

not

connec

ted

•Fa

ult

y E1

cab

le o

r co

nnec

tion

•E1

Bit

err

or

rate

ex

cess

ive.

•E1

str

appin

g n

ot

confi

gure

d.

DS0

not

assi

gned

.

1.In

spec

t th

e ce

ll s

ite

E1 d

ata

pat

h.

2.C

hec

k t

he

LMU

E1

connec

tion

and E

1 s

trap

pin

g c

onfi

gura

tion.

Ref

er t

o S

ectio

n 15

.6.5

: C

orre

ctin

g T1

Pro

blem

s .3.

Res

et t

he

LMU

.

4.V

erif

y E1

hea

lth.

5.If

the

pro

ble

m c

annot

be

reso

lved

, re

pla

ce t

he

LMU

.

LMU

6

1

Tab

le 1

5-1

: T

rou

ble

sho

oti

ng

Tab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de

7221

-252

8-0

000 •

Rel

ease

12.0

•Rev

isio

n H

• C

onfi

den

tial

and P

ropri

etar

y1

5–3

0

3G

LM

U In

stal

lati

on G

uid

e, N

ort

h

No L

MU

Ala

rmN

orm

al

oper

atio

nT

he

LMU

is

funct

ionin

g

norm

ally

. N

o f

ailu

res

or

fault

s ar

e ac

tive

.

No a

ctio

n is

nee

ded

to r

epai

r th

e LM

U o

r th

e dev

ices

it

monit

ors

.does

not

apply

Tab

le 1

5-1

: T

rou

ble

sho

oti

ng

Tab

le - A

pp

lica

tio

n F

ail

ure

s

LED

Sta

tus

Co

nso

le P

ort

A

larm

Fail

ure

C

on

dit

ion

D

esc

rip

tio

nR

eco

mm

en

ded

Act

ion

Fau

lt

Co

de



15.5.7 Sub Faults

After entering the Alarms command, SUBFAULT messages may display with the GPS TIMING ANAMOLY alarm or when no fault appears and the Status LED on the LMU is solid red. When a sub fault appears, take the recommended actions associated with the GPS TIMING ANAMOLY. The following is a list of the sub faults:

• SUBFAULT_GPS_FAIL_LOW_TFOM

• SUBFAULT_GPS_1_PPS

• SUBFAULT_GPS_10MHZ

15.6 Troubleshooting Procedures

Perform the procedures in this section as indicated by the Recommended Actions in Table 15-1.

15.6.1 Troubleshoot the Uplink RF Ports

Read this section to determine whether an RF uplink port on the LMU or the multicoupler has failed, or if a cable failed.

This test swaps an RF cable between ports to identify cable and port integrity. The test recommends moving a cable from a suspect bad port (A) to a known good port (B). Known good ports are those that pass the power measurement tests described in Section 12: Power Measurement Test.

To troubleshoot LMU RF uplink ports:

1. Swap the cable from the LMU RF uplink port with no signal (A) to a known good RF uplink port (B).

2. Perform a power measurement test on port (B) using the procedures described in Section 12: Power Measurement Test. If an RF signal is not present on the port, refer to 15.6.2.

3. If the RF signal is not present on port (B) in step 2 and the cable is good, the port on the multicoupler has failed. Report this result to the carrier.

4. If the RF signal is present on the port (B) in step 2, reset the LMU.

a) If the LMU does not have a T1 connection, the startup process will stop and wait for input.



b) Type proc and press R to allow the LMU to continue. The proc command is not visible on the terminal screen when you type it.

5. Re-connect the cable to the original port (A).

6. Perform a power measurement test on port (A) using the procedures described in Section 12: Power Measurement Test. If an RF signal is not present on the port, replace the LMU.

Evaluating Results

If only one LMU RF port fails, replace the LMU.

If a port on the multicoupler fails, contact the carrier.

If all or most of the ports fail, test the RF cables. For instructions, see 15.6.2: Check Faulty RF Cable.

If the cabling is correct, the LMU was deployed with an incorrect gain for the site. Do the following:

• Verify site survey and installation.

• Replace with an LMU containing the appropriate higher or lower gain hardware.

NOTEWhen returning an LMU to TruePosition, complete the following steps:

1. Note the appropriate alarm on the ProComm window.

2. Refer to the Fault Codes column in Table 15-1 for the fault code associated with the specific alarm.

For example, alarm FAULT_T1_LINE_QUALITY corresponds to fault code LMU 45.

3. Enter the appropriate fault code on the Field Return Request Form.

NOTE

If the RF problem cannot be isolated in the LMU or cable report the problem to the carrier and indicate that an RF problem exists at the base station. Do not replace the LMU.

15.6.2 Check Faulty RF Cable

To test a faulty RF cable:



1. Test cable with volt-ohm meter. Look for open circuit or short circuit:

– Center pin to shield should be infinite resistance indicating an open circuit

– center pin to center pin (end to end) should be two to three ohms indicating a short

2. Use the Sitemaster to sweep the cable to locate the fault. A fault is detected when the test result exceeds 1:1.3 VSWR.

3. Remove and replace faulty connectors or cables as needed.

15.6.3 Troubleshoot the GPS Antenna Path

This procedure describes how to test the path between the GPS port and the GPS antenna using a Trimble unit. It uses a process of elimination to test the path from the LMU to the GPS antenna by eliminating one component at a time until the entire path is tested. If the Trimble unit locates 3 or fewer satellites, there is a failed component in the path. Each time the test fails, you remove the last component from the path and retest until you have identified and eliminated the failure.

Figure 15-1 illustrates the troubleshooting process using the Trimble unit.

Figure 15-1: Troubleshooting the GPS path using the Trimble unit

To troubleshoot the GPS port connection:

1. Disconnect the cable from the GPS port, and connect the Trimble unit to the end of the path to the GPS antenna.



2. Test the path to the GPS antenna using the Trimble unit connected to the GPS cable.

– If the Trimble locates at least four satellites, the GPS signal is good. Re-connect the cable to the LMU. If the LMU locates four or more satellites the problem is resolved; otherwise; replace the LMU.

– If the Trimble does not locate at least four satellites, go to the next step.

NOTERepeat the next two steps until you isolate the failed component.

3. Disconnect the last component from the path to the GPS antenna, and connect the Trimble unit in its place.

4. Test the path to the GPS antenna using the Trimble unit.

– If the Trimble does not locate at least four satellites, repeat steps 3 and 4 until you reach the GPS antenna.

– If you have reached the GPS antenna, and the Trimble does not locate at least four satellites, replace the GPS antenna and skip to step 6.

– If the Trimble locates at least four satellites, go to the next step.

5. Replace the last component that you disconnected from the path.

6. Reassemble all components in the path.

7. Test the entire path to the GPS antenna using the Trimble unit connected to the end of the GPS antenna cable.

– If the Trimble does not locate at least four satellites, repeat this procedure starting at step 3.

– If the Trimble locates at least four satellites, The GPS signal problem is corrected. Go to the next step.

8. If necessary, weatherproof the connectors inside the GPS antenna pole by wrapping the antenna connector and cable connector with two to three layers of vinyl Scotch Brand, #88 Electrical Tape.

9. If necessary, weatherproof all external connections by wrapping the cable connections with the following:

– One layer of vinyl tape (preferably Scotch Brand #88 Electrical Tape),



– Three layers of mastic tape, extending past the vinyl tape.

– One layer of vinyl tape, extending past the mastic tape, (preferably Scotch Brand #88 Electrical Tape)

10. Reconnect the GPS cable to the LMU GPS port.





3. Enter the appropriate fault code on the Field Return Request Form

4. When troubleshooting the GPS antenna path with a Trimble, refer to Section 15.3: Problem Detection and Correction of Common Failures.

15.6.4 Troubleshoot the GSM Downlink Antenna Beacon Search Test Failure

Follow the procedures in this section to troubleshoot the GSM downlink antennas after failing the Beacon Search Test. Follow the appropriate procedure based on the type of antenna (internal or external) you are testing.






Troubleshooting Internal Downlink Antennas

For internal downlink antennas, complete the following steps:

1. Disconnect the cable from the DL1 port on the LMU, and connect it to the DL2 port.



2. Perform the Beacon Search Test. If the test passes, the LMU has an internal failure and must be replaced. If the power test fails, go on to the next step.



5. For internal downlink antennas that include cabling, check for bad connections.

6. Perform a Beacon Search test. If the test is successful, the problem is resolved; otherwise, go on to the next step.

7. For internal downlink antennas that include cabling, sweep the cables and replace any sections that are bad.

8. Perform a Beacon Search test. If the test is successful the problem is resolved; otherwise go on to the next step.

9. Replace the GSM downlink antenna and repeat the Beacon Search test. If the test is successful the problem is resolved; otherwise proceed with the next step.

10. If the problem persists, replace the LMU.

Troubleshooting the External Downlink Antenna

For external antennas, complete the following steps:





5. Test the connections between the LMU cable and the GSM antenna. Fix all improper connections.



6. Perform the Beacon Search test. If the test passes, the problem is resolved; otherwise go on to the next step.

7. Sweep the cables and replace any sections that are bad.


9. Replace the GSM downlink antenna.


11. If the problem persists, replace the LMU.

15.6.5 Correcting T1 Problems

1. Call the MTSO and see if the SMLC is online.

2. If the SMLC is online, use the T-Berd 2200 to test the T1 cable.

3. If the T1 cable is good, verify that the LMU has been configured per instructions.

4. If the LMU is configured properly, verify the T1 framing and coding at the carrier-provided drop-and-insert equipment.

5. If the T1 framing and coding does not match the LMU configuration, change the LMU configuration to match the correct T1 configuration, see Section 10: Set Up Strapping.

6. If the LMU framing and coding is correct, perform T1 local loopback test. For instructions, see Section 15.6.6: Local Loopback Test.

7. If the LMU passes the local loopback test, contact the EMS operator and perform a remote loopback test with the MTSO.

8. If the remote loopback test does not identify a problem, install a new LMU.








9. If replacing the LMU does not correct the problem, re-install the LMU you un-installed in step 8.

10. If performing the remote loopback test and replacing the LMU did not resolve the problem, have the MTSO test the T1 line.

15.6.6 Local Loopback Test

The local loopback test is used to troubleshoot T1 communication failures. This test determines if the T1/E1 port on the LMU front panel is functioning properly. To perform the test, you must set the LMU strapping for E1 regardless of whether you are performing T1 or E1 testing.

Perform loopback test using a loopback connector assembly and the LMU console port commands.

Prepare for Loopback Test

This test requires the use of a loopback connector assembly ADR-06-1131-00. The loopback connector assembly is an RJ-45 connector that plugs into the LMU T1/E1 port.

Perform Loopback Test

To perform the local loopback test:

1. Set the strapping to E1. For instructions, see Section 10: Set Up Strapping. If the LMU is already configured for E1, skip this step.



NOTEE1 is only available on LMUs with the necessary hardware. To determine whether you are installing an LMU that is enabled for E1 processing, perform the HELP SETNETWORKTYPE command. If E1 is available, the setting appears in a list (E1 and T1). For detailed instructions, see Appendix B: Console Port User Guide.

2. In the ProComm chat window, type gomaster and then press R.

3. Connect the T1 loopback connector assembly to the LMU T1/E1 port.

4. Type runlocalloop 50 10 and then press R. Passing tests occur when:

– Good responses are equal to the number of reports requested.

– Bad responses are equal to zero.Failing tests occur when:

– Good responses are not equal to the number of reports requested.

– Bad responses are greater than zero.A passing test from the runlocalt1 50 10 command is shown in the example below:Good 10, Bad 0

Good 10, Bad 0

Good 10, Bad 0

Good 10, Bad 0

Good 10, Bad 0

Replace units that provide failing test results. Refer to 15.7: Remove and Replace Procedures.








5. Remove the loopback connector assembly from the LMU T1/E1 port.

6. If you changed the LMU strapping from T1 to E1 for the test, return the strapping to T1.

NOTEIf you change the strapping on the LMU between T1 and E1, you must reset the LMU.

15.6.7 Correcting Strapping

If the LMU is having a problem communicating with the SMLC, there may be an error in the strapping information associated with the LMU. For instructions on setting strapping on an LMU, refer to Section 10: Set Up Strapping.

NOTEInform the SCOUT operator of any changes you made.

15.6.8 Test for Power

If the REV LED is lit, the polarity of the DC voltage into the LMU is reversed. Perform the following steps to correct this problem:

1. Inspect the DC power cable to determine if the cable is wired incorrectly. See Section 6.1: Ground and Power Cable Connection for New Installation.

2. If necessary, rewire the DC power cable. See Section 6.1: Ground and Power Cable Connection for New Installation.

3. If the DC power cable is wired correctly, verify that the polarity of the DC voltage being provided to the cable is correct. If not, reverse the polarity of the DC voltage into the cable.

If the PWR LED is red, this indicates an over temperature condition. Perform the following to correct this problem:

1. Verify that the input voltage is DC rather than AC, and that the input voltage is not greater than 54 VDC. If either of these conditions is false, correct the problem.



2. If neither of the conditions in step 1 is false, return the LMU to TruePosition for repair and replacement.

If the PWR LED or the status LEDs fail to illuminate during the LMU power up sequence perform the following:

1. If necessary, disconnect and reconnect the power cables to the LMU.

NOTE

For information on connecting and disconnecting power, refer to Section 6: Power Connections.

2. If the fans are running, and the PWR LED is green, go to Step 4.

3. If the fans are running and the PWR LED is not lit, there is a problem with the LMU power supply. Return the LMU to TruePosition for repair and replacement.

4. Press the LMU Reset button.

5. If the status LEDs do not illuminate after 30 seconds go to Step 6. Otherwise, the LMU is powered correctly.

6. Turn off the LMU supply-line-cable power source at the breaker or fuse.

7. Visually inspect the supply-line connection. Replace the supply-line connection if it is damaged. Contact the carrier for assistance if the supply-line cable is damaged.

8. If the supply-line cable and the LMU power cable pass visual inspection, restore power to the supply-line-cable.

9. Measure the voltage level at the LMU connector end of the supply line cable for:

– 22 VDC to 28 VDC for 24 VDC nominal, or

– -40.5 to -57VDC for- 48 VDC nominal.

10. If the voltage measurements are within limits re-connect the LMU power cable.

11. If the voltage measurements are not within limits contact the carrier for assistance.

If the status LED's still do not illuminate after 30 seconds, replace unit that exhibits failing test results. Refer to 15.7: Remove and Replace Procedures.








15.6.9 GPS Self-survey Test

When the LMU receives a GPS Position Changed error, you must perform a GPS Self-survey test to determine position recorded by the LMU for the GPS antenna. Refer to the GPS Self-Survey Operations Manual.

NOTEThe LMU cannot perform location processing while the test is being run.

1. At the LMU> prompt type BIT 9 0 0 and press R. The LMU displays the current GPS antenna latitude and longitude.

2. If the latitude, longitude and altitude reported by the LMU match the values recorded in the SCOUT application, no further action is required.

3. If the latitude and longitude reported by the LMU do not match the values recorded in the SCOUT application, enter the correct values by following the instructions in Section 11: Set GPS Parameters.The LMU resets with the correct latitude and longitude. How long it takes for the LMU to establish the correct GPS antenna location depends on how large a correction it must make.

15.7 Remove and Replace Procedures

This section contains procedures for removing and replacing the LMU and its cable connections.



NOTEAllow from 30 to 60 minutes to replace the LMU and its cable connections, and to recommision the LMU.

15.7.1 Retrieving Strapping and GPS Information

Prior to removing and replacing the LMU, it is necessary to retrieve the strapping and GPS information on the LMU being removed and transfer the information to the replacement LMU. The following procedure applies to both the LMU-N and LMU-B:

1. Type the command <showcomcfgs>. Refer to Section 10: Set Up Strapping, Step 4.

2. Record on paper or screen capture the strapping information displayed on the screen.

– DS0 time slot

– Network type

– Speed

– Framing

– Line Coding

3. Type the command <?gps>. Refer to Section 11.3: Set the GPS Parameters, Step 9.

4. Record on paper or screen capture the GPS information.

– Latitude

– Longitude

– Antenna delay

– Altitude

After the LMU is replaced and cabling installed, power ON the LMU and perform the following:

1. Type the GPS command with parameters captured in Step 4 above. Refer to Section 11.3: Set the GPS Parameters, Step 6.

2. Type the strap command with the parameters captured or recorded in Step 2 above. Refer to Section 10: Set Up Strapping.

3. Reset the LMU and observe that EMS receives alarm for condition.



4. Verify the LMU flash.

5. Verify the LMU Boot.

6. Verify the GPS software

7. Place test call from the LMU.

NOTEIf any of the LMU Flash, Boot or GPS software versions are incorrect, upgrade the versions to reflect that of the current WLS release Level.

15.7.2 Remove Cable Connections

NOTERemove LMU cable connections before removing the LMU from its rack or wall mount location.

This section describes removing cable connections. Figure 15-2 illustrates the location of cable connections on the front panel

.

Figure 15-2: Remove the Front Panel Connections

To remove cables:



1. Turn off the circuit breaker or fuse panel dedicated to the LMU.

2. Disconnect the power cable and the ground cables.

3. Inspect GPS and RF cables for identification. Re-apply missing or damaged cable identifiers as required.

NOTECable identification methods must mirror the carrier identification scheme. Always mark cables before removal using the identification methods used by the carrier.

4. Inspect cables for Port ID labels. Re-tape cables requiring port ID labels.

5. Remove the T1 or Ethernet cable from its front panel port connection.

6. Remove the GPS cable from its front panel port connection.

7. Remove the RF cables from their front panel port connections.

15.7.3 Remove the Mounting Assembly

This section provides instructions for removing the LMU from its position in a rack or wall-mount environment. Refer to Section 4.5.1: Mounting Constraints for LMU mounting constraints.

Rack Mount Removal

The LMU contains mounting flanges with standard rack-mounting holes. Figure 15-3 illustrates the rack-mounted LMU.

WarningElectrical HazardVerify with a voltmeter that the power feed is off before inspecting the LMU-N DC Power terminal block connections.



Figure 15-3: Rack Mounting

1. Complete the procedures in 15.7.2.

2. Remove the two 10x32 screws and flat washers holding the LMU in the equipment rack.

3. Place the four 10x32 screws in an envelope and tape it to the rack. Label the envelope “rack mounting screws”.

4. Contact the TruePosition TAC for the LMU return merchandise authorization (RMA) number before returning it to TruePosition.

15.7.4 Wall Mount Removal

This section contains instructions for removing the LMU from the wall mount:

1. Complete the procedures described in 15.7.2 to remove LMU cables.

2. Remove the two screws, per side, holding the LMU to the wall mount. (4 per side). Figure 15-4 illustrates an LMU in a wall mount.



Figure 15-4: Wall-mounted LMU

3. Place the two screws, per side, in an envelope and tape it to the wall mount. Label the envelope “wall mounting screws”.

4. Contact the TruePosition TAC for the LMU return merchandise authorization (RMA) number before returning it to TruePosition.

15.7.5 Replace the LMU in its Mounting Assembly

For instructions on replacing the LMU in a rack or wall mount location, refer to Section 5: Chassis Install.

15.7.6 Replace Cable Connections

Refer to Section 5: Chassis Install for replacing:



• Ground and power cables

• RF Cables

• Transitional jumper cables

• T1 cable


7221-2528-0000 • Release 12.0 • Revision H • Confidential and Proprietary A-1

APPENDIX A. PART NUMBER CROSS-REFERENCES

Table A-1 lists TruePosition part numbers and their corresponding numbers in SAP. Use the SAP numbers when ordering parts or kits.

Table A-1: Part Number Cross-References

TP Kit/Part Number Description SAP Number

11011R MATE-N-LOC POWER CONNECTOR 1860

11400R CONNECTOR, RECEPTACLE 3 POSITION, MATE-N-LOC

1305

11213R MALE CRIMP PIN 2449

11640R E1 PORT ADAPTER CABLE (75-120 OHM)

5752

13181R RING LUG CRIMP - 10 - 12 AWG (YELLOW) #10 STUD

1113

13536R RING LUG, CRIMP INSULATED 10-12 AWG, 1/4” STUD

4309

13659R RING LUG, CRIMP INSULATED 10-12 AWG, #6 STUD

5763

18407R CABLE ASSY, AEP, RJ11 to DB9F, 72 inch

5751

ADR-06-1131-00 T1 LOOPBACK CONN ASSY Contact TP for purchasing information

ADR-06-1173-00 CABLE ASSY DB9 MALE TO RJ45 (NOKIA) 6 METERS LONG (T1)

3694

ADR-06-1174-00 CABLE ASSY DB15 TO RJ45 (ERRICSSON) 1 METER LONG (T1)

3693

ADR-06-1174-01 CABLE ASSY DB15 TO RJ45 (ERRICSSON) 8 METERS LONG (T1)

5768

PLR-06-1719-00 SURGE PROTECTOR BROADBAND EMP KIT

200281

PLR-06-1720-00 SURGE PROTECTOR BROADBAND EMP W/ GAS CAPSULE KIT

200282


A-2 Confidential and Proprietary • 7221-2528-0000 • Release 12.0 • Revision H

PLR-06-1722-00 LMU WALL MTG KIT 200294

PLR-06-1737-80 INCLUSIVE CABLING KIT, INTERNATIONAL

200393

PLR-11-1119-00 CABLE ASSY, ADAPTER, POWER, 2G TO 3G SWAP

5864

PLR-11-1700-00 GENERIC KIT 3G LMU 200805

PLR-11-1701-00 KIT, 2G TO 3G SWAPOUT 101320

Table A-1: Part Number Cross-References

TP Kit/Part Number Description SAP Number


7221-2528-0000 • Release 12.0 • Revision H • Confidential and Proprietary B-1

APPENDIX B. CONSOLE PORT USER GUIDE

B.1 OverviewThe Console Port User Guide defines commands available on the LMU. These commands allow you to configure, test, and troubleshoot the LMU. Communicate with the LMU using a laptop connected to the LMU’s Console Port. The laptop acts as data terminal equipment.

After power-up or reset, the console port provides an interface to the standard operating mode, which displays an LMU> prompt.

For additional information about ProComm Plus®, see the ProComm Plus online help.

B.2 Configuring the Console InterfaceThe LMU front panel contains an RJ11 RS232 (AEP) port. Connect to this port using Cable Assembly DB9 Interface 72.00 inch adapter, part number 18407R. Connect the other end to the RS232 port on the laptop. Configure ProComm Plus as shown in Table B-1.


B-2 Confidential and Proprietary • 7221-2528-0000 • Release 12.0 • Revision H

Figure B-1 shows the wiring diagram of the 3G LMU console port cable.

Figure B-1: 3G LMU Console Port Cable Wiring Diagram

Table B-1: ProComm Plus settings

Parameter Setting Notes

Baud 115.2 k

Handshake N-8-1 No parity, 8 bits, 1 stop bit.

Protocol RAW ASCII

Terminal ANSI BBS

Comm Port # Direct connect - CommX

Selection of comm port #

X=1

X=2

•NOTE: If using a USB to serial adapter, look in Control Panel under System Hardware, then Device Manager. In the tree, click on Ports to see the port number for your adapter. Use this number in ProComm Plus



NOTE

A list of Console Interface supporting equipment appears in Section 4: LMU Pre-Installation.

B.2.1. Message Structure

Each command message is an ASCII string consisting of an alphanumeric command followed by parameters, if applicable. Parameters associated with a command consist of one or more numeric values. To complete a command, press R.

The following are guidelines for entering commands in ProComm Plus:

• Non-printing characters in the input message causes the input string to be rejected. The LMU displays the message: Bad input string.

• In the ProComm Plus Chat window, you can use local editing keys that are not passed through to the LMU.

• If the laptop sends line-feed characters, the LMU ignores them.

• When the LMU receives commands that it does not recognize, the following message displays: STRING_MSG displays.

NOTEIf the console port is non-responsive following a Bad input string message, shut down and restart ProComm.

B.2.2. Unrecognized Commands

If you enter an un-recognized command, STRING_MSG displays followed by the information you typed to indicate that the command was rejected.

For example, if you type RANDOM DATA at the LMU> prompt the following message displays,

STRING_MSG: RANDOM DATA

B.2.3. Accessing the ProComm Plus Chat Window

The ProComm Plus Chat window allows you to view commands as you type them. When typed in the ProComm Plus Chat window, commands are not case sensitive.

To access the ProComm Plus Chat window from the File menu, select Data > Chat Window. The ProComm Plus Chat window displays. Figure B-2 shows an example.



Figure B-2: ProComm Chat Window

B.3 Downloading Software Via Console PortYou may need to update software associated with LMU and GPS.

Follow the software loading sequence shown in Table B-2.

NOTEYou must load the software configuration that is associated with the software release. Refer to the release notes for the release being installed

After the software has been loaded as detailed in Table B-2, individual software can be downloaded (replaced) without performing the entire loading sequence.



* GBE — Hardware testing and application software

Displaying and Interpreting XX.YY Upgrade Screen

The following procedure details how to display the XX.YY Upgrade screen, where XX = major software revision and YY = minor software revision.

1. Power On the LMU.Wait for the LMU terminal display to stabilize following the reset condition. The LMU should reset to BOOT state and display the LMUBOOT> (9.1 and later) prompt.

2. Proceed the LMU to the standard operating mode by typing proc R.

3. Wait for GPS TIME NOW VALID (maximum 20 minutes). Shortly after GPS TIME NOW VALID appears, the LMU> prompt is displayed and screen is displayed.

OR

4. At LMU > type Build and screen is displayed.The following is a view of the XX.YY Upgrade screen.LMU>







Table B-2: Software Downloading Sequence

SOFTWARELOADING

SEQUENCE

LMU Boot 1

LMU Flash 2

LMU FPGA 3

GPS Flash 4

GPS FPGA 5

GBE Software* 6





















LMU>

B.3.1. Preparing to Download Software

Before you begin downloading software, complete the following steps:

1. Remove the LMU T1/E1 port connection. Figure B-3 shows the T1/E1 port location.

2. Attach a laptop running ProComm to the console port of the LMU. Figure B-3 shows the Console port location.

Figure B-3: LMU Front Panel Connections

3. Verify that the Pro Comm Plus setting in the tool bar at the bottom of the screen are as follows:



a) The baud rate is 115200, the terminal type is ANSI BBS, the protocol is N-8-1, and the transfer is set to RAW ASCII mode.

4. Press the LMU Reset button. Wait for the LMU terminal display to stabilize following the reset condition. LMU should reset to BOOT state and display the LMUBOOT> (9.1 and later) prompt.

5. Proceed the LMU to the standard operating mode by typing proc R.

6. Wait for the Proceed command to complete. Look for messages similar to the ones below and look for LMU prompt at completion.

NOTEThe proc command is not visible on the terminal screen when you type it. When the LMU completes proceeding, the LMU> prompt appears.



























LMU>

B.3.2. Downloading LMU Software

This section defines how to download Flash, Boot, and FPGA applications to the LMU.

NOTEWhen downloading software to the LMU, we recommend that you disconnect the T1 cable from the LMU front panel to prevent an operator from downloading software to the LMU while you are working. Replace the cable when you are finished.

When you download a new version of software to the LMU from the console port, the new version automatically becomes active.

Downloading GPS software is defined in Section B.3.3: Downloading GPS Software.

NOTEThe LMU saves two version of Flash software. When you download new Flash, the inactive version is erased and the previously active version becomes inactive.

To download the CD-ROM file to the LMU using ProComm, complete the following steps:

1. Identify the type of software you want to download. On the Pro Comm Chat window, type dwnldtype<software> R For software, enter the type of application you want to download:

– BOOT

– FPGA

– FLASH



2. From the Menu Bar on the Terminal window, click the Download Files icon.

Figure B-4: Terminal Window Menu Bar

The Sending File Using -- RAW ASCII dialog box displays. Figure B-5 shows an example.

Figure B-5: Send File Dialog Box

3. Click the Look In drop-down list and navigate to the appropriate directory on the CDROM drive.

4. Select the file from the list box:

– To download the Flash software, select LMUFLASH-RXX.YYBL<n>.hex

– To download the FPGA software, select:

– FPGA3G_CORR1-RXX.YYBL<n>.hex

– FPGA3G_CORR2-RXX.YYBL<n>.hex

– FPGA3G_SRCH-RXX.YYBL<n>.hex

– FPGA3G_DEMOD-RXX.YYBL<n>.hex

– FPGA3G_DDC-RXX.YYBL<n>.hex

– To download Boot software, select LMUBOOT-RXX.YYBL<n>.hex

NOTE<n> represents the number of the selected build.

Download Files



5. Click Open. The “Sending RAW ASCII File Status” window displays a counter indicating the progress of the file transfer.

Figure B-6: Sending File Status Bar

6. Wait about 2 to 3 minutes after the file transfer is completed to the LMU. When chksm<n> displays, the download is complete. The LMU resets, and messages display, which indicate that the flash is being erased and burned, and that the configuration information is being updated. Wait for the LMU terminal display to stabilize following the reset.

NOTEWhen you load new boot software, the LMU resets automatically.

This command is performed with the T1/E1 port disconnected. The LMU behaves differently when the cable is connected.

B.3.3. Downloading GPS Software

You may be required to update the flash software for operating the GPS Receiver (TPGPS). Download software from the GPS receiver’s manufacturer only.

1. Verify the LMU is in the Standard Operating Mode by observing the prompt. If the LMU displays the LMUBOOT> (9.1 and later) prompt, proceed to the Standard Operating state via the Proc ENTER command wait for proceed to complete.

2. To verify the manufacturer of the GPS in the LMU, view the electronic serial numbers on the LMU. At the LMU> prompt, type ?config R.The result is as shown in Figure B-7: LMU ESNs.

WARNING The installer must be sure the LMU completed proceeding by itself and it went all the way to the LMU> prompt with no user intervention. If the LMU finished the proceeding while the GPS is being downloaded it could corrupt the GPS FLASH and render the entire LMU inoperable.

9



3. Identify the type of software you want to download. On the Pro Comm Chat window, type dwnldtype GPS R The ESNs associated with the LMU display. Figure B-7 shows an example.

Figure B-7: LMU ESNs

4. From the Menu Bar on the Terminal window, click the Download Files icon.

Figure B-8: Terminal Window Menu Bar

The Sending File Using -- RAW ASCII dialog box displays.

Figure B-9: Sending File Using -- RAW ASCII

5. Click the Look In drop-down list and navigate to the appropriate directory on the CDROM drive.

6. Select the file from the list box:

– To download TPGPSFPGA file for TPFPGA select TPGPSFPGA-R<XX>.BL<n>.hex

Download Files



NOTE<n> represents the number of the selected build.

<XX> represents the sub revisions of major release

7. Click Open. The Sending RAW ASCII File Status window displays a counter indicating the progress of the file transfer.

Figure B-10: Sending File Status Bar

8. Wait about 3 to 4 minutes after file transfer is completed to the LMU. When csum<n> displays the download is complete. The LMU resets, and messages display, which indicate that the flash is being erased and burned, and that the configuration information is being updated. Wait for the LMU terminal display to stabilize following the reset.

NOTESTRING_MSG displays when the LMU receives commands that it does not recognize.

9. Type proc RThe proc command is not visible on the terminal screen when you type it. When the LMU completes the proceeding, LMU> prompt appears.

B.3.4. Verifying the New Software

After downloading new software, identify the current LMU software versions to make sure you have loaded the correct version.

1. Verify the LMU is in the Standard Operate state via LMU prompt display. If the LMU displays the LMUBOOT> (9.1 and later) prompt, proceed it via the proc R and wait for proceed to complete



2. At the LMU> prompt, type build RThe build command displays the current active software version ID on the LMU. Exibit B-1 shows an example.

Exhibit B-1: Build Command Results

















GBE Not ConfiguredLMU>

3. Check the build number of the download. If the build number is not correct, repeat the download process with the correct file.

B.4 Running the Local Loopback TestThe local loopback test works for the T1/E1 port. To perform a local loopback built-in test, complete the following steps:

1. Type gomaster R.

2. Insert a loopback plug.



3. Type runlocalloop 500 100 R Results similar to the following appear:Good 100, Bad 0

Good 100, Bad 0

Good 100, Bad 0

Good 100, Bad 0

Good 100, Bad 0

B.5 Proceed to Application Mode (No Network Connection)

This section provides instruction for resetting when the LMU does not have a T1 connection.

1. Wait two seconds for the LMU terminal display to stabilize following the reset condition.

2. Type proc RThe proc command is not visible on the terminal screen when you type it.

B.6 Displaying the GPS Antenna StatusReview the status of the GPS antenna by viewing information about the GPS satellites that it is tracking.

You can display GPS antenna status conditions containing criteria such as the number of satellites tracked, channels used and signal strength. Status messages contain a row for each satellites tracked.

To display the GPS satellite information, type gstat R

Table B-3 shows an example of the satellite information that displays. This example contains information about seven satellites.

Table B-3: Satellite Information

PRN Slot Chan HD Az El Sig PQ DM

1 0 1 618 0 0 35 1 1

5 0 2 618 0 40 1 1

13 0 3 618 0 0 42 1 1

4 0 4 618 0 0 40 1 1

7 0 5 618 0 0 37 1 1

24 0 6 618 0 0 42 1 1

30 0 7 618 0 0 40 1 1



B.7 Standard CommandsThis section defines standard commands that are accessible through the console port interface, refer to Table B-4: Standard Commands. When the LMU and the SMLC communicate, they follow standard command format. Parameter variables for commands are represented in angled brackets <>.

!CAUTION

Some special-purpose commands are not documented in this guide. Do not use them unless specifically instructed to by the TruePosition TAC.

Table B-4: Standard Commands

Alarm List Command: alarms

Description This command shows a list of current alarms.

Ancillary Equipment Control

Command ANC_EQUIP

<EQPTYPE>

1 = GBE only

2 = Eboard only

3 = GBE w/Eboard

4 = EIU

Description Sets the ancillary equipment type associated with the LMU.



Built-in Tests Command

(Bit ID)

bit <bit ID> <test parameters>

Following defines the test IDs:

2 = Signal Integrity - Determines whether the internal RF uplink or downlink path is working properly.

4 = DSP Memory - Determines whether the DSP memory is working that is associated with each DSP.

5 = CP Memory - Determines whether the CP memory is working.

6= Power Measurement - Measures power from the multicoupler to the LMU RF ports.

7 = Pattern Injection - This is an automated test, which is not run manually on the LMU.

8 = Power Present - Tests for power at the GSM downlink antenna ports.

9= GPS Self Survey - This test can prevent the LMU from performing location processing for up to 30 minutes. The latitude, longitude, and altitude entered in the LMU are removed and the GPS antenna must locate the LMU’s position.

Description For detailed information the above BIT tests that you perform during installation, see the appropriate configuration and system testing sections.

Display Build Information

Command build

Description Displays the ID for the software currently loaded on the LMU.

ClearDS0Bits Command clrds0bits

Description This command disables all DS0s. If you want to change the DS0 assignment, you must first disable the current DS0 assignment(s).

Display ESNs Command ?config

Description: ESNs are returned by this command. All ESNs are 24 characters (except customer ESNs, which are 15 characters). If a component is not present, the reported ESN is listed as “NOT INSTALLED”.

Table B-4: Standard Commands (Continued)



Response example

GBE_CTLR: NOT INSTALLED

GBE_LNA: NOT INSTALLED

GBE: NOT INSTALLED

GBE CUST ESN: NOT INSTALLED

GPS RCVR: 11160300P220052008010006

RECEIVER: 11160100P420052008330008

PSUPPLY: 11160200P320052008030005

CP/DSP: 11160000P320052008210005

CUSTESN: TRULMU78763B052

TPESN: AABCDEFGHIJKLMNOPQRSTUVW

Display GPS Time

Command time

Description Displays the GPS time.

Response: GPS Time: 706652080.00 seconds

Display GPS Antenna Status

Command: gstat

Description Displays the GPS antenna status conditions containing criteria such as the number of satellites tracked, channels used and signal strength. Status messages contain a line for each satellites tracked. For a description of the GPS antenna status messages, see B.6: Displaying the GPS Antenna Status.

Enable DS0 Command enableds0bit <bitNUM>

Description Enable a specific DS0

For T1 <bitNUM> consists of a range from 0 to 23 corresponding to the DS0 to be enabled.

For more than one DS0, enter enableds0bit <bitNUM> more than once.

Access Engineering Mode

Command ENG

Description Switch the LMU to the Engineering Mode. In Engineering Mode you can enter engineering commands.




Enter Standard Mode

Command dshell

Description This command, when entered at the vxWorks target shell prompt (->), deletes the target shell and enters Standard mode. This allows the operator to enter the standard shell when there are not enough GPS satellites.

Response LMU>

Enter Target Shell

Command tshell

Description This command, when entered while in Standard mode exits Standard mode and creates a target shell.

Get Port Gain Command ?gain [band][port]

(band) Enter a value from 1 to 6 representing the appropriate RF band.

(port) Enter a value from 1 to 6 representing the appropriate RF port.

Description Obtains the GAIN for a specified port.

Response GAIN for port1..6: -3..43

Get GPS Parameters

Command ?gps

Description Obtains the GPS parameters.

Response lat 40.06462 long -75.460373 antenna delay 0 ams 53

Get Temperatures

Command: ?temp

Description: Temperatures are returned by this command. All temperatures are in degrees Centigrade. If a component is not present, the reported temperature will be 255.

Response:

TEMPERATURES: recvr <value> bdc <value> power supply <value>

#GBE: controller <value> LNA <value>




Go Master Command gomaster

Description Provide timing for T1/E1 loopback tests.

Operating Time

Command optime

Description Shows the amount of time the LMU has been operational in centiseconds

Response Uptime: 6300 centiseconds

Proceed with Booting

Command proc

The proc command can only be used from LMU boot mode. It is not available from the LMU> prompt.

Description Proceed from bootrom to operational mode

Response Proceeding (4).

Reset Command reset

Description Forces a CPU reset

Response Abrupt termination of current process.

Run local Loopback test

Command runlocalloop 50 10. For details about performing this test, see Section 15.6.6: Local Loopback Test.

Description Run local T1/E1 loopback test (depending on which loopback connector is used).

Set 56k Mode Command set56kmode <mode>, where <mode> is either 0 or 1.

0 = 64kbps

1 = 56kbps

Description Sets the 56K

Set The Baud Rate

Command baud <rate>

Rate new baud rate

Description Sets the baud rate to the specified value.

Response Set Baud Rate to: Specified value




Set Download Type

Command dwnldtype <type>

Description Sets the type of image being downloaded on the Console port.

Parameter <type> BOOT, FPGA, FLASH, GPS, or GBE

Set Framing Command setframing <mode>

Description Sets the framing mode

parameter <mode>

For T1...

0 = ESF

1 = D4

Set Gain Command gain <band><port><gain>

Description Sets the GAIN for a specified port.

parameter for <band> enter a value from 1 to 6

for <port> enter a value from 1 to 6

for <gain> enter a value from -3 to 43

Set GPS Parameters

Command gps <lat> <long> <ant> <alt>

(Lat) latitude location of GPS antenna (for example., 40.123456)

(Long) longitude location of GPS antenna (for example., -75.123456)

•NOTE: The CPG looks for six digits right of the decimal point. Add trailing zeroes if needed to make six.

(Ant) number of nanoseconds to be added to account for antenna delay

(alt) height above or below sea level of the GPS measured using an ellipsoid measurement (WGS84) added to the end of the measurement

Description Establishes the GPS parameters

Response lat 40.064621 long -75.460373 antenna delay 0 ams 40

Set Line Mode Command setlinemode <mode>

For T1...

0 = B8ZS

1 = AMI




Description Sets the Line

Set Network Type

Command SETNETWORKTYPE <Parameter>Parameter

0 - T1

Description Sets the carrier’s network type. This command is required when setting strapping.

Set Strapping Command strap <DS0 time slot> <T1 speed> <framing> <line coding>The parameters for this command are different for T1 and E1.

T1 strapping:

(DS0 bit) ranges from 0 to 23 and corresponds to the DS0 to be enabled.

(network type) “T1”

(linespeed) “64k” or “56k”

(framing mode) “esf” or “d4”

(line mode) “b8zs” or “ami”

E1 strapping:

(DS0 bit) ranges from 0 to 31 and corresponds to the DS0 to be enabled.

(network type “E1”

(linespeed) “64k”

(framing mode) “NOMFNOCRC” or “NOMFCRC” or “MFNOCRC” or “MFCRC”

(line mode) “hdb3” or “ami”

Description Sets the T1 configuration parameters for a single DS0 configuration

Show Strapping

Command showcomcfgs

Description Displays the current strapping information entered on the LMU for T1 or E1.

Show LMU State

Command state

Description Shows LMU state




Response Administrative State of the LMU-N is ENABLED

Administrative State of the PROC ELEM is ENABLED

Administrative State of DIGITAL_PATH_0 is ENABLED




Administrative State of ANALOG_PATH_0 is ENABLED






Administrative State of GPS is ENABLED

Operational Status of the LMU-N is UP

Operational Status of the PROC ELEM is UP

Operational Status of DIGITAL_PATH_0 is UP




Operational Status of ANALOG_PATH_0 is UP



Operational Status of ANALOG_PATH_3 is ENABLED



Operational Status of GPS is ENABLED

Time Since the Last Boot

Command uptime

:




B.8 Engineering CommandsThe commands in this section are for use with the assistance of the TruePosition TAC only, refer to Table B-5. They are not required when operating and maintaining the system.

Description Shows time since bootup in centiseconds.

Response Uptime: 6300 centiseconds Display the Configuration ID

Table B-5: Engineering Commands

AGC Command AGC <parameters>

Description Enable/Disable the AGC for a specified sector.

Response AGC Enabled: TRUE/FALSE

CVCR Command CVCR <parameters>

Description Terminates voice channel processing in one or more sectors.

ETHTEST Command ETHTEST <parameters>

Description Perform an ethernet loopback test.

REFDATA Command REFDATA <parameters>

Description This command forwards reference data information.

REFREQ Command REFREQ <parameters>

Description This command requests a reference.

REFPRO Command REFPRO <parameters>

Description This command forwards a reference log.

GTDATA Command GTDATA <parameters>

Description Requests a section of GSM sampled data stored in the LMU.

GVCR Command GVCR <parameters>




NOTE

You must close the ProComm Plus® application before disconnecting the console cable.

Description Schedules GSM voice channel processing.

SVCR Command svcr <parameters>

TDATA Command tdata <parameters>

Description TDOA Data Request

TDOA Command tdoa <parameters>

Description The block number begins at 1 and increments upward. The field indicated as <6> is a potentially long string containing the data belonging to one packet in pixelized form. The gain field (G) is as defined in ICD.

States : OP

Description Causes DSPs to collect a length of data, package it, and return the packets. This is the format supported by the SCS, as is the reply. The TDATA command supports the format of the SMLC/LMU ICD. The reply is identical.

Response req-type=0: TDOA (tracer) P (port) B (block number) C (chunk) G (mantissa),(exp) V (bits per sample) W (bytes) |<6>|

req-type=1: Ident (0..255) Port Mask (port mask) (up to four metrics)

VCLI Command VCLI <parameters>

Description Obtains a list of probable epochs in which this location can take place.

Table B-5: Engineering Commands (Continued)

7221-2528-0000 • Release 12.0 • Revision H • Confidential and Proprietary C–1


APPENDIX C. CABLE SELECTION TABLES

C.1 OverviewThis appendix contains tables for selecting cables based on the measured gain at the multicoupler, combined with the length of the cable between the multicoupler and the LMU. The following tables appear:

• Cellular (850 MHz) RF antennas

• AWS (1700 MHz) and PCS (1900 MHz) RF antennas

Use the chart for the correct frequency connection on the LMU. Note that the tables apply for two cable types.

• CNT-240-FR cable

• FSJ2 cable

NOTE

The charts are blank for any situation where the combination of multicoupler gain and cable length is outside the capabilities of both types of cables. For those situations, call the TruePosition Technical Assistance Center (TAC) for advice on what cable to use.

C.2 Using the TablesFollow the instructions in Section 4.6.1: RF Cables to determine the cable length and multicoupler gain for each cable. Use those two figures to locate the cell in the table where the multicoupler gain column intersects the row for the length of cable. Use the indicated cable type for fabricating this cable.

C–2

Confi

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tial

and P

ropri

etar

y • 7

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528

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= F

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le

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le

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gt

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7221

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000 •

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Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

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ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

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le

Len

gt

h (m)

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Confi

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Rel

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40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

33

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–5

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

34

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

35

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

36

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

37

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

38

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

39

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

41

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

42

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

43

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

44

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–6

Confi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

45

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

46

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

47

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

48

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

49

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

50

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

51

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

52

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

53

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

54

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

55

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–7

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

56

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

57

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

58

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

59

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

60

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

61

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

62

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

63

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

64

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

65

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

66

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–8

Confi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

67

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

68

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

69

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

70

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

71

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

72

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

73

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2

74

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2

75

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2

76

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2

77

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–9

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

78

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2

79

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2

80

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2

81

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

82

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

83

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

84

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

85

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

86

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2

87

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2

88

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–1

0C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

89

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

90

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

91

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

92

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

93

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

94

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

95

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

96

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

97

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

98

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

99

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–11

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

10

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

12

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

22

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

32

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

42

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

52

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

62

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

72

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

82

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

92

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

11

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–1

2C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

11

12

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

11

22

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

11

32

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

42

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

52

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

62

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

72

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

82

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

92

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

12

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

12

12

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–13

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

12

22

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

32

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

42

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

52

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

62

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

72

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

82

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

92

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

12

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

22

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–1

4C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

13

32

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

42

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

52

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

62

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

72

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

82

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

92

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

12

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

22

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

32

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–15

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

14

42

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

52

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

62

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

72

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

82

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

92

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

15

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-1: C

ell

ula

r (8

50

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–1

6C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

12

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

22

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

32

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

42

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

52

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

62

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

72

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

82

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

92

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0

10

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

11

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–17

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

12

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

13

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

14

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

15

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

16

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

17

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

18

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

19

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

20

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

21

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

22

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–1

8C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

23

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

25

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

26

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

27

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

28

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

29

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

30

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

31

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

32

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

33

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–19

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

34

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

35

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

36

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

37

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

38

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

39

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

41

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

42

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

43

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

44

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–2

0C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

45

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

46

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

47

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

48

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2

49

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2

50

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2

51

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2

52

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2

53

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2

54

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2

55

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–21

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

56

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

57

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2

58

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

F2J2

J2J2

J2J2

J2J2

J2

59

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

60

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

61

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

62

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

63

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

64

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

65

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

66

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–2

2C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

67

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

68

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

69

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2

70

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2

71

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2

72

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

73

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

74

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

75

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

76

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

77

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–23

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

78

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

79

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

80

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

81

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

82

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

83

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

84

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

85

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

86

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

87

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

88

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–2

4C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

89

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

90

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

91

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

92

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

93

24

02

40

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

94

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

95

24

02

40

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

96

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

97

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

98

24

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

99

24

02

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–25

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

10

02

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

12

40

24

02

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

22

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

32

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

42

40

24

02

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

52

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

10

62

40

24

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

72

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

82

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

10

92

40

24

02

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

11

02

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–2

6C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

11

12

40

24

02

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

22

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

32

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

42

40

24

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

52

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

11

62

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

11

72

40

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

11

8J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

11

9J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

1J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

12

3J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

12

4J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

7221

-252

8-0

000 •

Rel

ease

12.0

• R

evis

ion H

• C

onfi

den

tial

and P

ropri

etar

yC

–27

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

12

5J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

12

6J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

12

7J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

8J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

12

9J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

13

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

13

1J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

13

2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

3J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

4J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

5J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

6J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

13

7J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

13

8J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

13

9J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

1J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

3J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

C–2

8C

onfi

den

tial

and P

ropri

etar

y • 7

221-2

528

-000

0 •

Rel

ease

12.0

• R

evis

ion H

3G

LM

U Inst

alla

tion G

uid

e, N

ort

h A

mer

ican

14

4J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

5J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

6J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

7J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2

14

8J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

14

9J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

15

0J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

J2J2

Tab

le C

-2: A

WS (

17

00

MH

z)

an

d P

CS (

19

00

MH

z)

RF C

ab

le S

ele

ctio

n C

hart

Measu

red

Gain

at

Mu

ltic

ou

ple

r (d

B). N

OT

E: 2

40

= C

NT

-24

0-F

R c

ab

le, J2

= F

SJ2

cab

le

Cab

le

Len

gt

h (m)

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9


7221-2528-0000 • Release 12.0 • Revision H • Confidential and Proprietary D-1

APPENDIX D. SURGE PROTECTOR (EMP) CONFIGURATIONS

D.1 IntroductionThis appendix details the various mounting configurations for the Huber-Suhner Surge Protectors (EMP). An EMP kit is supplied with each surge protector, which includes bracket and lug.

NOTEPrior to the field technician installing the surge protector they must review with the customer representative which configuration, described in this appendix, best suits the equipment surge protector mounting and grounding.

D.2 General Mounting and GroundingInstallation sites can have a number of different restrictions on where and how a lightning (surge) protector can be mounted. Huber-Suhner EMPs accommodate various methods to ensure the cleanest installation and most effective grounding.

Figure D-1: Surge Protector

The GPS surge protector can be mounted in a side-by-side configuration with the downlink surge protector, as shown in Figure D-2.


D-2 Confidential and Proprietary • 7221-2528-0000 • Release 12.0 • Revision H

Figure D-2: Combined mounting of downlink and GPS surge protectors

D.2.1. Two Bolt - Bulkhead

Figure D-3: Two-Bolt Bulkhead Installation

Two bolts hold the copper bracket to the bonding bar. EMP is mounted via the bulkhead nut. Orientation does not matter. (two mounting bolts not included)

D.2.2. Single Bolt

A single bolt holds the copper bracket to the bonding bar. (bolt not included)


7221-2528-0000 • Release 12.0 • Revision H • Confidential and Proprietary D-3

Figure D-4: Single Bolt Installation

EMPs must be well grounded to properly protect your system. Be sure to keep the number of connections from the EMP body to electrical ground at a minimum.

Surge current takes the path of least resistance to ground. Each connection and each length of grounding cable increases the resistance to ground and reduces the quality of that path. Firmly mounting an EMP directly to a clean bonding bar keeps the number of connections and resistance to ground at a minimum.

Examples of different mounting configurations using this kit are shown below. Different systems have different grounding methodologies. Prior to installation on site, confirm the location and mounting method with customer representative and/or operations personnel.

D.2.3. Wall Mount

Copper bracket is mounted to structure adjacent to the bonding bar. EMP is connected to the bonding bar with Lug and 6AWG ground cable.

Figure D-5: Wall Mount


D-4 Confidential and Proprietary • 7221-2528-0000 • Release 12.0 • Revision H

D.2.4. Through-hole Mount

EMP is mounted to the bracket with bolts passing through the EMP body.

Figure D-6: Through-Hole Mount

D.2.5. Grounding

EMP is grounded to the bonding bar with the ground screw (included) and small lug (not included).

Figure D-7: Grounding

7221-2528-0000 • Release 12.0 • Revision H

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