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GETTING STARTED GUIDE Trimble ® SNM910 Cellular Modem Version 4.41 Revision: A June 2011
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Page 1: SNM910_441A_GSGuide_17244_ENG

GETTING STARTED GUIDE

Trimble® SNM910 Cellular Modem

Version 4.41 Revision: A June 2011

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Trimble SMN910 Cellular Modem Getting Started Guide 2

Legal Notices Corporate Office Trimble Navigation Limited 935 Stewart Drive Sunnyvale, CA 94085 USA www.trimble.com

Heavy Highway business area Trimble Navigation Limited Heavy Highway business area 5475 Kellenburger Road Dayton, Ohio 45424-1099 USA

800-538-7800 (toll free in USA) +1-937-245-5600 Phone +1-937-233-9004 Fax www.trimble.com

Email: [email protected]

Legal Notices © 2006–2011, Trimble Navigation Limited. All rights reserved.

Trimble, the Globe & Triangle logo, and TSC2 are trademarks of Trimble Navigation Limited, registered in the United States and in other countries. AutoBase, CMR, CMR+, Connected Community, EVEREST, HYDROpro, Maxwell, Micro-Centered, Trimble Geomatics Office, SiteNet, TRIMMARK, TRIMTALK, TSCe, VRS, Zephyr, and Zephyr Geodetic are trademarks of Trimble Navigation Limited.

The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Trimble Navigation Limited is under license. Microsoft, Internet Explorer, and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. All other trademarks are the property of their respective owners.

Support for Galileo is developed under a license of the European Union and the European Space Agency.

Release Notice This is the June 2011 release (Revision A) of the SPS Receivers Help. It applies to version 4.41 of the receiver firmware.

Product Limited Warranty Information For applicable product Limited Warranty information, please refer to the Limited Warranty Card included with this Trimble product, or consult your local Trimble authorized dealer.

COCOM limits The U.S. Department of Commerce requires that all exportable GPS products contain performance limitations so that they cannot be used in a manner that could threaten the security of the United States. The following limitations are implemented on this product:

• Immediate access to satellite measurements and navigation results is disabled when the receiver velocity is computed to be greater than 1,000 knots, or its altitude is computed to be above 18,000 meters. The receiver GPS subsystem resets until the COCOM situation clears. As a result, all logging and stream configurations stop until the GPS subsystem is cleared.

Notices Class B Statement – Notice to Users. This 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 and Part 90. 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 communication. 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:

• Increase the separation between the equipment and the 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.

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Trimble SMN910 Cellular Modem Getting Started Guide 3

Changes and modifications not expressly approved by the manufacturer or registrant of this equipment can void your authority to operate this equipment under Federal Communications Commission rules.

Canada This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

This apparatus complies with Canadian RSS-GEN, RSS-310, RSS-210, and RSS-119.

Cet appareil est conforme à la norme CNR-GEN, CNR-310, CNR-210, et CNR-119 du Canada.

Europe

The product covered by this guide are intended to be used in all EU member countries, Norway, and Switzerland. Products been tested and found to comply with the requirements for a Class B device pursuant to European Council Directive 89/336/EEC on EMC, thereby satisfying the requirements for CE Marking and sale within the European Economic Area (EEA). Contains a Bluetooth radio module. These requirements are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential or commercial environment. The 450 MHZ (PMR) bands and 2.4 GHz are non-harmonized throughout Europe.

CE Declaration of Conformity Hereby, Trimble Navigation, declares that the GPS receivers are in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC.

Australia and New Zealand

This product conforms with the regulatory requirements of the Australian Communications and Media Authority (ACMA) EMC framework, thus satisfying the requirements for C-Tick Marking and sale within Australia and New Zealand.

Restriction of Use of Certain Hazardous Substances in Electrical and Electronic Equipment (RoHS) Trimble products in this guide comply in all material respects with DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS Directive) and Amendment 2005/618/EC filed under C(2005) 3143, with exemptions for lead in solder pursuant to Paragraph 7 of the Annex to the RoHS Directive applied.

Waste Electrical and Electronic Equipment (WEEE) For product recycling instructions and more information, please go to www.trimble.com/ev.shtml.

Recycling in Europe: To recycle Trimble WEEE (Waste Electrical and Electronic Equipment, products that run on electrical power.), Call +31 497 53 24 30, and ask for the “WEEE Associate”. Or, mail a request for recycling instructions to: Trimble Europe BV c/o Menlo Worldwide Logistics Meerheide 45 5521 DZ Eersel, NL

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Trimble SMN910 Cellular Modem Getting Started Guide 4

FCC Declaration of Conformity We, Trimble Navigation Limited.

935 Stewart Drive PO Box 3642

Sunnyvale, CA 94088-3642 United States

+1-408-481-8000

Declare under sole responsibility that DoC products comply with Part 15 of FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired

operation

Unlicensed radios in products This device complies with part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

Licensed radios in products This device complies with part 15 of the FCC Rules.

Operation is subject to the condition that this device may not cause harmful interference.

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Trimble SMN910 Cellular Modem Getting Started Guide 5

Table of Contents Safety Information ............................................................................................................ 6 Introduction ..................................................................................................................... 8

Related information ....................................................................................................... 8 Technical support .......................................................................................................... 8

What's In the Box ............................................................................................................. 9 Kit - Radio, Cellular, SNM910 cellular modem for an SPS modular receiver ......................... 9 Kit - Radio, Cellular, SNM910 cellular modem for an SNB rebroadcaster ............................ 9 Before you start ........................................................................................................ 9

Connecting and Turning On .............................................................................................. 10 Inserting the SIM card .............................................................................................. 10 Attaching the bracket ............................................................................................... 10 Attaching the SNM910 cellular modem to the host device .............................................. 11 Rear view ............................................................................................................... 12 Front view .............................................................................................................. 12 Cables ................................................................................................................... 13

Host Devices .................................................................................................................. 14 External Power ............................................................................................................... 15 Using the SNM910 with SPS Receivers ............................................................................... 17

Common ways to set up a base station ........................................................................... 17 Setting up a base station for permanent or semi-permanent installation .......................... 17 Setting up a base station for daily site use: T-Bar ........................................................ 18 Setting up a mobile base station: Tripod and fixed height tripod ..................................... 19 Tripod and tribrach setup .......................................................................................... 20

Configuring an IBSS Field Base using the web interface .................................................... 22 Controlling an IBSS Field Base using the receiver ............................................................. 23 Checking the status of the IBSS using the receiver ........................................................... 24

Using the SNM910 Site-Net Modem with the SNB900 Radio Modem ........................................ 25 IBSS 900 MHz Rebroadcaster setup ............................................................................ 25

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Trimble SMN910 Cellular Modem Getting Started Guide 6

Safety Information Before you use your Trimble product, make sure that you have read and understood all safety requirements.

Use and care This product is designed to withstand the rough treatment and tough environment that typically occurs in construction applications. However, the receiver is a high-precision electronic instrument and should be treated with reasonable care.

Caution – Operating or storing the receiver outside the specified temperature range can damage it.

Regulations and safety The SNM910 cellular modem contains an internal Quad-Band GSM 850/900/1800/1900MHz radio modem.

Before operating a Trimble GPS receiver or GSM modem, determine if authorization or a license to operate the unit is required in your country. It is the responsibility of the end user to obtain an operator's permit or license for the receiver for the location or country of use.

For FCC regulations, see Legal Notices.

Type approval Type approval, or acceptance, covers technical parameters of the equipment related to emissions that can cause interference. Type approval is granted to the manufacturer of the transmission equipment, independent from the operation or licensing of the units. Some countries have unique technical requirements for operation in particular radio-modem frequency bands. To comply with those requirements, Trimble may have modified your equipment to be granted Type approval.

Unauthorized modification of the units voids the Type approval, the warranty, and the operational license of the equipment.

For GSM/GPRS radio Safety. Exposure to RF energy is an important safety consideration. The FCC has adopted a safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment as a result of its actions in General Docket 79-144 on March 13, 1986.

Proper use of this radio modem results in exposure below government limits. The following precautions are recommended:

• DO NOT operate the transmitter when someone is within 28 cm (11 inches) of the antenna.

• All equipment should be serviced only by a qualified technician.

Installing antennas

Caution – For your own safety, and in terms of the RF exposure requirements of the FCC, always observe these precautions: – Always maintain a minimum separation distance of 20 cm (7.8 inches) between yourself and the radiating antenna. – Do not co-locate the antenna with any other transmitting device.

When setting up the SNM910 cellular modem with a co-located 900 MHz transmit radio such as the SNB900 or SPS852, you must use an external antenna kit for the 900 MHz radio. The 900 MHz whip antenna must be located at least 1 meter (3 feet) from the SNM910 cellular modem.

Battery safety

Connecting SPS receivers or a SNM910 cellular modem to a vehicle battery

WARNING – Use caution when connecting battery cable's clip leads to a vehicle battery. Do not allow any metal object or jewelry to connect (short) the battery's positive (+) terminal to either the negative (-) terminal or the metal of the vehicle connected to the battery as this could result in high current, arcing, and high temperatures, and cause personal injury.

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Trimble SMN910 Cellular Modem Getting Started Guide 7

WARNING – When connecting an external battery, such as a vehicle battery, to an SPS receiver, ensure that you use the Trimble cable with proper over-current protection intended for this purpose. Otherwise, you risk personal injury, or damage to the equipment.

Inserting the SIM card

Caution – To avoid damage to the SIM card when you insert or remove it: - Do not scratch or bend the card. -Ensure that the modem is in a dust-free environment. - Ensure that the SNM910 cellular modem is not connected to power.

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Trimble SMN910 Cellular Modem Getting Started Guide 8

Introduction

The Trimble® SNM910 is an add-on cellular (GPRS) modem for use with the SPS modular receivers and the SNM900 radio (host devices) for the following applications:

Use case Operation IBSS VRS™ service TCC Sync service

IBSS field base Base Base – No 900 MHz rebroadcast Rebroadcaster Rover Rover No Marine modular rover Rover Rover Rover No

Related information Sources of related information include the following:

• Release notes – The release notes describe new features of the product, information not included in the manuals, and any changes to the manuals. They can be downloaded from the Trimble website at www.trimble.com/support.shtml.

• Trimble training courses – Consider a training course to help you use your GPS system to its fullest potential. For more information, go to the Trimble website at www.trimble.com/training.html.

Technical support If you have a problem and cannot find the information you need in the product documentation, contact your local dealer. Alternatively, go to the Support area of the Trimble website (www.trimble.com/support.shtml). Select the product you need information on. Product updates, documentation, and any support issues are available for download.

If you need to contact Trimble technical support, complete the online inquiry form at www.trimble.com/support_form.asp.

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Trimble SMN910 Cellular Modem Getting Started Guide 9

What's In the Box

Kit - Radio, Cellular, SNM910 cellular modem for an SPS modular receiver

Part Number Item

69996-00 SNM910 cellular modem 79768-00 Mounting bracket for SPS Modular receiver 27953 Mounting screw 44041-00 Card - Manuals and Utilities 44043-00 Document - SNM910 Quick Reference Card 56504-00 Warranty Activation Card

Kit - Radio, Cellular, SNM910 cellular modem for an SNB rebroadcaster

Part Number Item

69996-00 SNM910 cellular modem 79764-00 Mounting bracket for SNB900 radio-modem 27953 Mounting screw 46125-20 Cable - Power, 3 m (10 ft), LM0 to Battery Clips 44041-00 Card - Manuals and Utilities 44043-00 Document - SNM910 Quick Reference Card 56504-00 Warranty Activation Card

Before you start

Before you start using the SNM910 cellular modem, check that you have the following items:

• SCS900 Site Controller software, version 2.70 or later

• SPSx52, SPSx51, or SPSx50 firmware, version 4.15 or later

• SNB900 firmware, version 2.50 or later

• A Trimble Connected Community™ Device license for each base and rebroadcaster that you want to connect to an Internet Base Station (IBS) service.

• A GPRS data service and SIM card for each base and rebroadcaster

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Trimble SMN910 Cellular Modem Getting Started Guide 10

Connecting and Turning On

Do not turn the modem on unless it is connected to a host device.

When the modem is connected to a host, the external power supply is shared with the host device.

When the modem is connected to an SPS852 receiver and no external power supply is connected, it draws power from the SPS852 internal battery.

Note – The SNM910 cellular modem requires an external power source; it does not have an internal battery.

Inserting the SIM card

Caution – To avoid damage to the SIM card when you insert or remove it: - Do not scratch or bend the card. -Ensure that the modem is in a dust-free environment. - Ensure that the SNM910 cellular modem is not connected to power.

Before attaching the SNM910 cellular modem to a host device, insert the SIM card into the modem:

1. Before inserting the SIM card, turn off the host, disconnect the power cable and then remove the modem from the bracket.

2. Remove the SIM slot cover.

3. Insert the SIM card in the direction shown by the arrow on the casing:

4. Push the SIM card into the slot and then release it. The card locks into place.

5. Replace the SIM slot cover and tighten it securely.

Attaching the bracket

The mounting bracket is required to hold the SNM910 cellular modem in place and enables you to mount the combined unit correctly. Do not connect the modem to a host device without using the bracket.

1. Remove the rubber end caps on the host device. This exposes the mounting screw holes.

2. Use the four provided screws to attach the bracket to the host device.

3. Replace the rubber end caps.

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Trimble SMN910 Cellular Modem Getting Started Guide 11

Attaching the SNM910 cellular modem to the host device

After the bracket is attached and the SIM card installed, attach the SNM910 cellular modem to the host device:

1. Turn off the power on the host device.

2. Slide the SNM910 cellular modem into the supporting bracket and ensure that the 26-pin connector mates correctly with the host device.

3. Tighten the two thumb screws.

4. Connect an external power cable to the SNM910 cellular modem.

5. Turn on the host device.

Note – The host will detect the SNM910 cellular modem during the power up process. If it is not detected, you may need to cycle the power on the host.

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Trimble SMN910 Cellular Modem Getting Started Guide 12

Rear view

Front view

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Trimble SMN910 Cellular Modem Getting Started Guide 13

Cables

Part Number

SNM910 connection

Power connection

Power Source Other connectors

46125-20 7-pin Lemo 'Croc' clips Power from 12 V vehicle battery

None

59044 7-pin Lemo Cable with DC plug

Power to host devices from AC adapter

Serial

67384 7-pin Lemo Cable with DC plug

Power to host devices from AC adapter

Serial-to-serial for Moving Base applications

57167 26-pin Adapter with DC plug

Power from AC adapter

USB(B) socket and Ethernet socket

57168 26-pin Adapter with DC plug

Power from AC adapter

Serial and Ethernet socket

77070-00 26-pin Cable with DC plug

Power from AC adapter

2 x Serial, Ethernet plug, USB(A) plug, 1PPS (BNC)

78235-00 26-pin Cable with DC plug

Power from AC adapter

2 x Serial, Ethernet socket

Note – USB and Serial 2 connections to the host device are not functional on these cables when connected to a SNM910 cellular modem.

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Trimble SMN910 Cellular Modem Getting Started Guide 14

Host Devices

The SNM910 is an add-on GSM module for the SPS Modular receivers or SNB900 Radio (also known as host devices). The SNM910 cellular modem cannot operate without a host device.

The following host devices are supported:

• SPSx50 (SPS550, SPS750, SPS850)

• SPSx51 (SPS351, SPS551, SPS651, SPS751, SPS851)

• SPS852

• SPSx61 (SPS361, SPS461)

• SNB900

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Trimble SMN910 Cellular Modem Getting Started Guide 15

External Power

Sources of external power include:

• AC power

• 12 V vehicle battery

• Trimble custom external battery pack

• Generator power

• Solar panel

The cellular modem is powered by an external power source using any one of the following methods:

1. Connect cable 46125-20 to the 7-pin Lemo socket and then connect the "crocodile clips" to the 12 V vehicle battery.

2. Connect cable 57167, 57168, 77070-00, or 78235-00 to the 26-pin connector and then connect the power jack from the Trimble AC power adapter to the power jack socket on the cable.

3. Connect cable 59044 or 67384 to the 7-pin Lemo socket and then connect the power jack from the Trimble AC power adapter to the power jack socket on the cable.

When connected to the SPS852 modular receiver, the SNM910 cellular modem draws power from the internal battery of the SPS852:

Part Number

SNM910 connection

Power connection

Power Source Other connectors

46125-20 7-pin Lemo 'Croc' clips Power from 12 V vehicle battery

None

59044 7-pin Lemo Cable with DC plug

Power from 12 V vehicle battery

Serial

67384 7-pin Lemo Cable with DC plug

Power to host devices from AC adapter

Serial to serial for Moving Base applications

57167 26-pin Adapter with DC plug

Power from AC adapter

USB(B) socket and Ethernet socket

57168 26-pin Adapter with DC plug

Power from AC adapter

Serial and Ethernet socket

60789-00, 77070-00

26-pin Cable with DC plug

Power from AC adapter

2 x Serial, Ethernet plug, USB(A) plug, 1PPS (BNC)

65791-00, 78235-00

26-pin Cable with DC plug

Power from AC adapter

2 x Serial, Ethernet socket

Connecting SPS receivers or a SNM910 cellular modem to a vehicle battery

WARNING – Use caution when connecting battery cable's clip leads to a vehicle battery. Do not allow any metal object or jewelry to connect (short) the battery's positive (+) terminal to either the negative (-) terminal or the metal of the vehicle connected to the battery as this could result in high current, arcing, and high temperatures, and cause personal injury.

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Trimble SMN910 Cellular Modem Getting Started Guide 16

WARNING – When connecting an external battery, such as a vehicle battery, to an SPS receiver, ensure that you use the Trimble cable with proper over-current protection intended for this purpose. Otherwise, you risk personal injury, or damage to the equipment.

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Trimble SMN910 Cellular Modem Getting Started Guide 17

Using the SNM910 with SPS Receivers

Common ways to set up a base station You can set up a base station in different ways depending on the application, coverage area, degree of permanence versus mobility, and available infrastructure. Before you set up a base station, please see the Setup Guidelines.

Setting up a base station for permanent or semi-permanent installation

For construction applications, where machine and site positioning operations using GPS will be carried out over a long time (weeks, months, or years), ensure that you carefully choose the base station location.

A semi-permanent or permanent base station helps to eliminate the types of error that can result from repeated daily setups, and ensures that you always use the GPS antenna at the exact original location. The requirement for a permanent base station setup increases as more receivers that use the base station as a source of corrections, increases the cost of any base station downtime.

On the largest jobsites, and on those that remain operational for the longest time, a permanent or semi-permanent installation is a popular solution. Typically, an SPS Modular receiver is used as the base station, located in a site office or trailer where it is easy to access (to check or configure), and where it is secure from theft and the weather. The GPS and radio antennas are normally mounted on a permanent structure on the roof of the building, where they are high and clear from obstructions and where the radio antenna can provide the maximum range of operation.

Trimble recommends that you use the Trimble Zephyr Geodetic™ Model 2 GPS antenna, which has a large ground plane that reduces multipath, and provides the best GPS performance at the base location. The antennas are connected to the receiver by high quality RF cables.

The receiver is connected to a permanent power supply (mains or generator power). The internal battery of the receiver is always being charged, and acts as an uninterruptible power supply if there is a power failure. In some cases, the receiver may also be connected by an Ethernet cable to the Internet (either through the SNM920 cellular router or a third-party router), so that it can be monitored and configured from a remote location, and can warn an administrator by email or text message if there is a change to the configuration or status. In these situations, the receiver can transmit corrections through a remote radio and also to IBSS over the Internet.

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Trimble SMN910 Cellular Modem Getting Started Guide 18

The following figure shows an SPS Modular receiver permanent installation:

Setting up a base station for daily site use: T-Bar

For construction applications where a daily setup and takedown of equipment is required for security reasons, Trimble recommends that you use a T-Bar setup.

The T-Bar consists of a post mounted in concrete (so it cannot move), which has a solid metal T-Bar mounted to it to provide lateral and vertical separation between the GPS antenna and radio antenna. The T piece of the T-Bar has a vertical rod at each end. Each end terminates in a 5/8"×11 thread to which the antennas can be mounted. Clearly mark one end GPS and the other end Radio so that at each daily setup, the GPS and radio antennas are mounted at the same location. Switching antennas by mistake introduces a position error in all resulting measurements. You can buy the parts you need to make a T-Bar from any reputable hardware store. Make certain that the T-Bar cannot rotate after construction as this can introduce a position error into all subsequent measurements.

On the upright post, mount either a bracket (to which the GPS receiver can be mounted), or a well-ventilated lockbox (in which the GPS receiver itself can be secured).

Each day, mount the GPS antenna on the GPS end of the T-Bar and the radio antenna on the Radio end of the T-Bar. Connect the antennas to the receiver using the appropriate cables. The receiver uses either its own integrated battery, or an external 12 V battery through the 12 V crocodile clips cable that are provided with the receiver. If you choose to use AC power, remember that the heat generated by the charging process and the radio transmitter increases the need for good ventilation around the receiver.

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Advantages

Use of a T-Bar ensures that the base station is set up with exactly the same position and height every day, which helps eliminate the errors typically associated with daily tripod setup. For example, wrong antenna height, base not set up over the point, base set up in the wrong location.

The following figure shows a system set up on a T-bar, with an external radio antenna to gain longer range:

Setting up a mobile base station: Tripod and fixed height tripod

If you are repeatedly moving between jobsites, or if you are visiting a jobsite for the first time before a T-Bar or similar setup can be established, Trimble recommends that you use either a tripod and tribrach setup, or a fixed height tripod.

The fixed height tripod is quicker and easier to set up over a control point. It allows you to re-establish the antenna height exactly so that the receiver can be set up faster without using the SCS900 software or without needing to enter a revised antenna height in the receiver front panel. Take great care to ensure that the GPS antenna is set up accurately over the control point, and that the GPS antenna height is measured accurately, in the right way (vertical or slope height) to the right location on the antenna (base of antenna or to a specified location on the antenna). When you start the rover receiver, you must check in, at one or more known locations, to check for possible position or height errors. Checking in at a known location is good practice and can avoid costly errors caused by a bad setup.

Typically, the tripod and fixed height tripod methods do not give significant height clearance above the ground, and can reduce the range of operation caused by radio limitations.

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Trimble SMN910 Cellular Modem Getting Started Guide 20

Tripod and tribrach setup

In the tripod setup, the tripod is located over the control point, and the tribrach and tribrach adaptor is mounted on the tripod and centered over the point.

1. Mount the GPS antenna on the tribrach adaptor.

SPS882 only: If you are using a Smart GPS antenna, use the 25 cm spacer rod provided with the Base Station Accessory kit. This allows the radio antenna in the receiver to clear the head of the tripod.

2. SPS Modular only: Clip the GPS receiver to the tripod.

3. SPS Modular only: Connect the GPS antenna to the receiver using the appropriate cable.

4. If required, connect the GPS receiver to an external 12 V power supply. Use the crocodile clip cable or the Trimble custom power pack.

The following figures show a tripod and tribrach setup:

SPS Modular with a low-grain "rubber duck" antenna

SPS Modular with an external high-gain antenna

SPS882 with an internal 450 MHz Tx radio

Fixed height tripod setup

A fixed height tripod setup is similar to a tripod setup, but is simplified by the central leg of the tripod, which is placed directly on the control point. If the central leg is leveled accurately, the fixed height tripod is quick and easy to set up, and provides an accurate way to measure the true antenna height.

1. Set up the tripod over the control point.

2. Attach the GPS antenna to the head of the tripod.

3. If using an external high-gain radio antenna, mount the radio antenna to the radio antenna bracket that is attached to the head of the tripod (beneath the GPS antenna). See the following figure.

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Trimble SMN910 Cellular Modem Getting Started Guide 21

4. SPS Modular only: Hook the receiver to the center leg of the tripod, using the tripod clip.

5. SPS882 only: Mount the antenna using the 25 cm spacer rod (supplied with the SPS882 Base Station Accessory kit, P/N 50590-50), so that the radio antenna clears the head of the tripod.

The following figures show a fixed height tripod setup:

SPS Modular with a low-grain "rubber duck" antenna

SPS Modular with an external high-gain antenna

SPS882 with an internal 450 MHz Tx radio on a fixed height tripod

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Adding Internet Base Station Service (IBSS) capability

By adding an SNM910 cellular modem to the SPS Modular base station, the T-Bar or Tripod setup can be used to provide corrections through the internal 900 MHz radio and also through the Internet using the IBSS.

• Configuring an IBSS Field Base using the web interface

• Configuring an IBSS Field Base using the front panel

The following figure shows an SNM910 cellular modem attached to an SPS Modular base station with a mounting bracket:

Antenna mounting for best performance

If you are using 900 MHz or 850 MHz GSM from your cellular network provider, there should be at least 1 m separation between the SNM910 (with internal cellular antenna) cellular modem and any 900 MHz transmitting antenna. Trimble recommends using an external 900 MHz antenna kit in place of the "rubber duck" antenna fitted to the back of the SPS852 Modular receiver.

Caution – Failure to provide the minimum 1 m antenna separation may result in loss of data reception on both the 900 MHz and GSM network, and a reduction in quality or loss of the cellular service.

Configuring an IBSS Field Base using the web interface To configure the IBSS field base in the office, use a computer or laptop running a Windows® operating system:

1. Use the mounting bracket to attach the modem to the SPS Modular receiver.

2. Connect cable 57167, 57168, 77070-00, or 78235-00 to the 26-pin connector on the modem and then connect the power jack from the Trimble AC power adapter to the power jack socket on the cable.

3. Use an Ethernet cable to connect the SPS Modular receiver to a network or directly to the computer.

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Trimble SMN910 Cellular Modem Getting Started Guide 23

4. Press on the front panel to find the Ethernet IP address of the SPS Modular receiver, open a web browser and then enter the IP address in the Address field.

Note – The default login for the SPS Modular receiver is Admin / password.

5. Select Receiver Configuration / General to set the receiver as a base.

5. Select Receiver Configuration / Reference Station to set the base position and name.

Note – The Reference Station name is used as the IBSS base station name.

6. Select SNM910 Modem / Configuration to set the GPRS Service provider access.

7. Select Change GPRS Service to select the GPRS access information based on Country, Provider, and Plan, or manually enter the APN, CID, username, and password,

8. Save the settings and then press Connect.

9. Monitor the State until the modem has connected to the Internet.

10. Select I/O Configuration / IBSS/NTRIP Server and then select IBSS Mode.

11. Enter your TCC Organization and Password.

12. Select the required Output format (the default is the CMRx format).

13. Select the Enable check box and then press OK.

Controlling an IBSS Field Base using the receiver Once the IBSS Field Base is configured, it can been turned on and turned off from the front panel:

1. From the home screen, press , , and then press or to select either:

– Connect

– Disconnect

– Reset

Press to activate the command.

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Trimble SMN910 Cellular Modem Getting Started Guide 24

Checking the status of the IBSS using the receiver

From the home screen, press to view the modem status. This screen shows the status of the SNM910 connection:

If the SNM910 status is…

It means that…

Wrong PIN you have entered an incorrect CPIN for the SIM. Need PIN you need to enter a CPIN for the SIM. No SIM you have entered an incorrect CPIN three times; enter the 8-digit PUK

supplied by your service provider. ISP Connected you are connected to the Internet. ISP in Progress the Internet connection is in progress. ISP Failed Start the cellular modem could not connect to the ISP. Bad Base or MP there is an invalid mount point or base name Bad Credentials there is an unknown TCC device ID, or incorrect user name or

password. Data Unavailable there is no response or no GNSS data from IBSS or NTIP source. Bad Server URL it has failed to connect to IBSS/NTRIP Caster. Check the TCC org or

NTRIP URL. Receiver data the IBSS/NTRIP is receiving correction data. Sending data the IBS Base is sending correction data to IBSS.

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Using the SNM910 Site-Net Modem with the SNB900 Radio Modem

A 900 MHz rebroadcast system transmits correction data from a remote internet base station or NTRIP source to rovers over the 900 MHz radio network. In this case, the SNM910 cellular modem provides the Internet connection.

The main advantage of using a rebroadcast system is to cover a wider area with a single base station without having to use repeaters. Precise RTK accuracies can be achieved at up to 30 km from the IBS (Internet Base Station).

IBSS 900 MHz Rebroadcaster setup

Trimble recommends that you configure the SNB900 radio as a Rebroadcaster in the office before mobilisation. To do this:

1. Insert the SIM card and attach the bracket. For more information, see Connecting and turning on.

2. Insert the SNM910 modem into the bracket and tighten the thumbscrews.

3. Connect adapter P/N 57158 to the 26-pin connector on the modem and then connect the power cable to the adapter.

4. Use an Ethernet cable to connect a laptop running the Windows operating system to the adapter and then turn on both the SNM910 modem and the SNB900 radio.

Note - The laptop must not have any existing wireless or wired Ethernet connections.

5. Press to navigate to the Protocol screen and then press to select Easy IP.

6. After the modem has saved and rebooted, press to navigate to the Mode

screen and then press to select Rebroadcaster. The modem saves and reboots.

7. Press to navigate to the Ethernet Addr screen and make a note of the IP address (normally 169.254.2.1).

8. Open a browser application (for example, Mozilla Firefox or the Internet Explorer® Internet browser) and then enter the IP address into the Address field. The SNB900 web interface appears.

9. Open the SNM910 Modem page and then click Configure to set the APN, CID, user name, and password provided by your Internet Service Provider.

10. Click Apply Settings and then click Reboot to reboot the radio.

11. Open the IBSS/NTRIP Clientpage, set the Mode to IBSS, enter the TCC Org, TCC Password, and Base Name and then click Save Changes.

Note - Base Org is required only if the base station belongs to a different TCC Organisation.

12. Open the Configure wireless page, set the Network number and Easy IP name for the 900 MHz radio and then click Apply Settings.

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Trimble SMN910 Cellular Modem Getting Started Guide 26

You can now turn off the Rebroadcaster and mobilise it.

In the field, select an appropriate site for the Rebroadcaster. The location should:

• Have good cellular reception (press on the radio to check the SNM910 RSSI).

• Provide the required 900 MHz radio coverage for your operations.

Note - You must use an external radio antenna kit for the internal 900 MHz radio. To avoid interference between the 900 MHz radio and GPRS transmissions, do not mount the external radio antenna within 1 m (3.3 ft) of the SNM910 modem.

1. Use a tripod or post to mount the Rebroadcaster and external 900 MHz radio antenna.

2. Connect cable P/N 46125-20 to the 7-pin Lemo socket on the modem and then connect the crocodile clips to a 12 V DC power source to provide power for both the modem and the radio.

3. Turn on the radio—the previous configuration is reused.

4. Press twice to view the SNM910 Status screen: If the SNM910 status is… It means that…

No SIM Detected You have entered an incorrect CPIN for the SIM. SIM Locked You must enter a CPIN for the SIM. Bad APN or CID You have entered an incorrect CPIN three times; enter

the 8-digit PUK supplied by the service provider. ISP Failed Start The SNM910 could not connect to the ISP. ISP Terminated The ISP connection has been terminated but will try

again. Bad Base or MP Invalid mount point or base name. Bad Credentials Unknown TCC device ID, or incorrect user name or

password. Data Unavailable No response or No GNSS Data from IBSS or NTRIP

source. Bad Server URL Failed to connect to IBSS/NTRIP Caster. Check the TCC

org or NTRIP URL. Lost ISP Lost ISP connection, will re-establish NTRIP/IBSS when

reconnected to ISP. Up and Connected The SNM910 modem is connected to IBSS/NTRIP. Receiving data IBSS/NTRIP receiving correction data. “Data” may be

replaced by the correction type, for example, CMR.