DN00103405-1-V35(13A)

TU 21124, TU21124.05 Data Interface Unit

Operating Manual

C33028.85.H0

DN00103405 © Nokia Corporation 1 (72)Issue 1-0 en Nokia Proprietary and Confidential

Operating Manual

The information in this documentation is subject to change without notice and describes onlythe product defined in the introduction of this documentation. This documentation is intendedfor the use of Nokia's customers only for the purposes of the agreement under which thedocumentation is submitted, and no part of it may be reproduced or transmitted in any form ormeans without the prior written permission of Nokia. The documentation has been prepared tobe used by professional and properly trained personnel, and the customer assumes fullresponsibility when using it. Nokia welcomes customer comments as part of the process ofcontinuous development and improvement of the documentation.

The information or statements given in this documentation concerning the suitability, capacity,or performance of the mentioned hardware or software products cannot be considered bindingbut shall be defined in the agreement made between Nokia and the customer. However, Nokiahas made all reasonable efforts to ensure that the instructions contained in the documentationare adequate and free of material errors and omissions. Nokia will, if necessary, explain issueswhich may not be covered by the documentation.

Nokia's liability for any errors in the documentation is limited to the documentary correction oferrors. NOKIA WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THISDOCUMENTATION OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL(INCLUDING MONETARY LOSSES), that might arise from the use of this documentation orthe information in it.

This documentation and the product it describes are considered protected by copyrightaccording to the applicable laws.

NOKIA logo is a registered trademark of Nokia Corporation.

Other product names mentioned in this documentation may be trademarks of their respectivecompanies, and they are mentioned for identification purposes only.

Copyright © Nokia Corporation 2002. All rights reserved.

The following products comply with the protection requirements of the European Union CouncilDirective 89/336/EEC relating to electromagnetic compatibility (EMC), provided that installedusing EMC-compatible installation practices (installation in mechanical housings stated to beEMC-compatible and using cabling material [at least as well shielded] and practices as statedin relevant Nokia Telecommunications user manuals):

Product code Product name Release

TU 21124 Data Interface Unit, n x 64 kbit/s,V.11/V.35/X.21, 2 channels

09A

TU 21124.05 Data Interface Unit, n x 64 kbit/s,V.11/V.35/X.21, 2 channels

05A

2 (72) © Nokia Corporation DN00103405Nokia Proprietary and Confidential Issue 1-0en

Contents

Contents 3

Summary of changes 5

1 About this manual 7

2 Functional description 92.1 Overview 92.2 Operation 102.2.1 Line interface n x 64 kbit/s 112.2.2 Timing alternatives 122.2.3 Control signals 152.2.4 Error analysis 162.2.5 Loops 162.3 Technical specifications 182.3.1 Power supply 182.3.2 Mechanical dimensions 182.3.3 Environmental conditions 18

3 Installation 193.1 Introduction 193.2 Mounting of units into cartridges 193.2.1 Power supply 193.2.2 Equipping 203.3 Signal interfaces, cabling and jumper settings 213.3.1 Connectors and cables 213.3.2 Signal interfaces 223.3.3 Marking of cabling 283.3.4 Selecting polarity of 114 clock (V.11 and V.35) 293.3.5 Jumper settings 30

4 Operation 334.1 Introduction 334.1.1 General 334.1.2 Start-up of data unit 344.1.3 Software settings 354.1.4 Removing unit from a cartridge 354.2 Maintenance 364.2.1 Alarms 374.2.2 State and fault messages 384.2.3 Fault locating 384.2.4 Performance measurements 39

5 Operation with Service Terminal 415.1 Service menus 425.2 General 475.3 Service Terminal main menu 485.4 Data unit menus 50


Operating Manual

5.4.1 Fault display 515.4.2 Identifications 525.4.3 Controls (temporary) 535.4.4 Settings (permanent) 565.4.5 Measurements 695.4.6 Statistics 705.4.7 Testing 70


Summary of changes

Document Date Comment

C33028001PE_00 17 Aug 1994

C33028001PE_A0 16 Mar 1998 This manual is valid for program TS 25440, versions09A, 10A and 11A.

C33028001PE_B0 16 Mar 2000 This manual is valid for program TS 25440, version12A.

DN00103405 Issue 1 en 10 May 2002 New document numbering scheme adopted.

This manual is valid for program TS 25440, version13A.


Operating Manual


About this manual

1 About this manualThis operating manual describes the installation and operation of Nokia's DataInterface Unit (DIU).

The covered topics are:

• Funtional description (Chapter 2)

• Installation (Chapter 3)

• Operation (Chapter 4)

• Operation with Service Terminal (Chapter 5).

Releted documents

For more information about the Service Terminal, refer to the OperatingHandbook of the Service Terminal.

For more information about the Transmission Management System (TMS), referto the Operating Manual for the TMS Transmission Management System.


Operating Manual


Functional description

2 Functional descriptionThis chapter gives an overview of the functionalities and operation of the DataInterface Unit. It also lists the technical specifications of the unit.

2.1 Overview

This document is valid for both units TU 21124 and TU 21124.05. The onlydifference between these two units is that TU 21124.05 has a synchronisationinterface block in its structure.

These data units are members of the DYNANET product family. The unitscontain two data channels, the transmission rate of which can be set to n x 64kbit/s, n being 1,2,3...31.

Characteristics:

• 2 data channels

• Data interface can be selected to comply with the Recommendation RS-449 (V.11), V.35 or X.21

• Time slots used by the data interfaces are selectable in the range 1...31.Time slot 16 is normally allocated for control signals. If the channel rate is31 x 64 kbit/s = 1984 kbit/s, control signals and other channels cannot beused.

• In the unit TU 21124.05, the 2M clock of the MUX unit can besynchronised with the n x 64 kbit/s clock (n = 1 to 31) obtained from theDTE

• Control signals received from the far end can be filtered

• Both data channels can be looped for testing

• Channel settings are selected using the Service Terminal or theTransmission Management System (TMS)

• State of the channels can be monitored with the Service Terminal or TMS.


Operating Manual

2.2 Operation

Data Interface Unit (DIU) TU 21124(.05) comprises two n x 64 kbit/s datachannels and combines two synchronous data streams from the DTE to the DM 2Multiplex Equipment. The block diagram is shown in Figure 1. The data unitcarries out the buffering required for the generation of a continuous data stream.The unit inserts the transmitted data (from the DTE) to the 2 Mbit/s time slots ofthe DM 2 bus and transfers the data received (to the DTE) to the n x 64 kbit/s line.Time slots to be used are selectable and they are the same in both directions.

Control signals are transferred in signalling channels of one selectable channel.The channel is the same in both directions. The control signals in the 2 Mbit/s bususe time slot 16.

Functions of the unit are controlled by a microcontroller which is equipped withexternal EPROM and RAM memories. Power is supplied by a built-in powersupply.

Control functions directed to the unit by the user are selected with the ServiceTerminal or Transmission Management System via the DM 2 MultiplexEquipment.

The unit can be looped for testing in the DTE direction according to the ITU-TRecommendations X.150/3b or X.150/3c, or in the DCE direction according tothe ITU-T Recommendation X.150/2b.



Figure 1. Channel block diagram. Note that the synchronisation interfaceblock is included in TU 21124.05 only

2.2.1 Line interface n x 64 kbit/s

Line interface allows to implement interfaces complying with the ITU-TRecommendations V.35 and X.21, and the EIA standard RS-449.

LEDCONTROL

LINEi.f.

LINEi.f.

RX BUFFER

TX BUFFER

RECEIVE

TRANSMIT

PLL

RCLK

RDAT

RSYN

RSIG

VP5

DM 2BUSi.f

DM 2BUSi.f

TCLK

TDAT

TSYN

TSIG

PLL

POWER

VPB

VNB

VP5T

VN5T

VN12T

+12 V

+5 V

0 V

5 V

-12 V

ST

TT

SD

RS

TR

RT

RD

CS

RR

DM

UA0UA1

UA2UA3

UA4

CMICMO

VAP5

MICRO-red

yellow

green

CONTROLLER+ MEMORY

TIMING

+ CONTROL

TIMING

+ CONTROL

SUPPLY

CNTRL.BUS

UNITADDR.

SYNC.i.f. *2 MHz


Operating Manual

Interfaces with different electrical characteristics are implemented by separateline buffer modules which are selected under control of a microprocessor. Thebuffers are V.35/V.28 and V.11 (RS-422A).

2.2.2 Timing alternatives

The DM 2 bus has its own clock signals. The 2 Mbit/s transmit clock TCLK andreceive clock RCLK are separate. The clock signals required by varioustransmission rates are generated from 2 Mbit/s clocks of the DM 2 bus.

Table 1. List of signals

Name RS-449 V.24 X.24 Direction

Signal ground SG 102 G

Transmitted data SD 103 T to DCE

Received data RD 104 R to DTE

DTE timing TT 113 X to DCE

Transmitter timing ST 114 to DTE

Receiver timing RT 115 S to DTE

Request to send RS 105 C to DCE

Ready for sending CS 106 to DTE

Data set ready DM 107 to DTE

Terminal ready TR 108.2 to DCE

Receiver ready RR 109 I to DTE

Table 2. Standards and related recommendations

RS-449: RS-449 Signal specifications

RS-422A Electrical specifications

X.21: X.24 Signal specifications

V.11 Electrical specifications

V.35: V.24 Signal specifications

V.35 Electrical specifications of data

V.28 Electrical specifications of signalling



Recommendations RS-449 and V.35

At the contradirectional interface, the clock signals for the transmit side areseparate from those of the receive side. The signals are generated in the DIU.

Figure 2. Generation of clock signals at the contradirectional interface

At the codirectional interface, the receive side clock is generated in the DIU. Thetransmit side obtains its clock from the line.

DIUDTE DM 2

PISO SIPO TX BUFFER PISO

SD,103

TDAT

SIPO PISO RX BUFFER SIPO

RD,104

RDAT

TIM. GEN.

TIM. GEN.

ST,114

RT,115

TCLK

RCLK


Operating Manual

Figure 3. Generation of clock signals at the codirectional interface

Recommendation X.21

The clock of the X.21 interface operating with internal timing is generated eitherfrom the TCLK clock or the RCLK clock. The same clock is applied both to thetransmit and the receive sides.

Figure 4. Generation of internal clock signals at the X.21 interface

DIUDTE DM 2

PISO SIPO PISO

SD,103

TDAT

SIPO PISO SIPO

RD,104

RDAT

TIM. GEN.

TIM. GEN.

TT,113

RT,115

TCLK

RCLK

TX BUFFER

RX BUFFER

DIUDTE DM 2

PISO SIPO PISO

T

TDAT

SIPO PISO SIPO

R

RDAT

TIM. GEN.

TIM. GEN.

STCLK

RCLK

TX BUFFER

RX BUFFER



When external timing is used, the transmit and receive sides obtain their commonclock from outside, from the line. To avoid drift in the bit rate on the connectionbetween the line interface and the internal bus interface, this clock must besynchronised externally with the 2 Mbit/s clock of the DM 2 equipment.

Figure 5. Generation of external clock signals at the X.21 interface

2M Synchronising (only TU 21124.05)

In the codirectional or external mode, X(113)-signal can be fed to thesynchronisation block of the TU 21124.05 unit which uses it to generate the 2Msynchronising clock. The multiplexing equipment can use this clock tosynchronise the local network with the data equipment connected to theTU 21124.05 interface.

2.2.3 Control signals

Data unit receives control signals from the terminal equipment via the lineinterface and sends corresponding information to the far end in the signalling timeslot (16) of the selected data transfer time slot. Signal 105 is transferred to the farend as signal 109. Signal 108 is transferred to the far end as signal 106. It can beselected that signal 105 is transferred to the far end as signal 109 and to the nearend as signal 106. In that case, signalling bit 'a' (108) is in the forced OFF-state.

Correspondingly, data unit reads control signals received from the far end in thesignalling time slot (16) of the selected data transfer time slot and sends them tothe terminal equipment. Signal 109 is read from the signalling bit 'b' (105). Signal106 is read from the signalling bit 'a' (108). Signal 107 is set in the ON-state if thechannel is ready to operate and transmit data to the network.

DIUDTE DM 2

PISO SIPO PISO

T

TDAT

SIPO PISO SIPO

R

RDAT

TIM. GEN.

TIM. GEN.

XTCLK

RCLK

TX BUFFER

RX BUFFER


Operating Manual

2.2.4 Error analysis

Buffering

Slips (+/−) of the transmit and receive buffers can be controlled by the unit'sprocessor. The microprocessor can read state information of the slips. When a slip(+/−) has been detected, an alarm can be generated.

Incoming timing/data

The clock and data coming from the direction of the DTE can be monitoredduring transmission. If the clock is not detected within 30 µs or 128 consecutivedatabits are constant 1s or 0s, the “Loss of incoming signal” alarm is activated andan AIS signal is sent to the DM2 bus.

Faults in DM 2 bus

If the DM 2 bus becomes faulty, the unit sends an AIS signal to the DTE and setsthe handshake signals OFF.

2.2.5 Loops

Loops to the line interface can be done as short (ITU-T X.150 3c) or long (ITU-T X.150 3b). During interface loops, signals to the internal 2M bus are in a highimpedance state. The loops are established within the Data Interface Circuit(DIC).

Figure 6. Short interface loopback X.150 3c

DIUDTE DM 2

PISO SIPO PISO

103,T

TDAT=1TSIG=1

SIPO PISO SIPO RDAT

TIM. GEN.

TIM. GEN.

113,X

TCLK

RCLK

TX BUFFER

RX BUFFER104,R

114

115,S

103 104105 109108 106



Figure 7. Long interface loopback X.150 3b

A loop to the 2M line direction can be done (ITU-T X.150 2b). The loop isestablished within the DIC circuit.

Figure 8. Equipment loopback X.150 2b

DIUDTE DM 2

PISO SIPO PISO

103,T

TDAT=1TSIG=1

SIPO PISO SIPO RDAT

TIM. GEN.

TIM. GEN.

X

TCLK

TX BUFFER

RX BUFFER104,R

114

115,S

113

TDAT RDATTSIG RSIG

DIUDTE DM 2

PISO SIPO PISOT

TDAT

SIPO PISO SIPO RDAT

TIM. GEN.

TIM. GEN.

TCLK

TX BUFFER

RX BUFFER

106=0107=0109=0104=1

RCLK

104 103109 105106 108


Operating Manual

2.3 Technical specifications

2.3.1 Power supply

The unit uses an isolated, integrated switching mode power supply. Supplyvoltage is 20...72 V. Output voltages are +12 V, −12 V, +5 V and −5 VDC. Themaximum current consumption at different output voltages are given in the tablebelow.

2.3.2 Mechanical dimensions

2.3.3 Environmental conditions

Output Current consumption

+5 V 960 mA

-5 V 100 mA

+12 V 40 mA

-12 V 40 mA

Mechanical dimensions

Height 233 mm 6 U

Width 20 mm 4 T

Depth 160 mm

Operation Transportation andstorage

Temperature -10...+70 °C -40...+70 °C

Humidity < 95 % / +30 °C max. 98 %


Installation

Note

3 InstallationThis chapter describes how to install a Data Interface Unit into a cartridge. It alsoshows the signal interfaces, cabling and jumper settings of the unit.

3.1 Introduction

Data Interface Unit (DIU) is installed into a TM4 equipment cartridge. TheOperating Manual for the TM4 Construction Practice explains connection ofcentral battery voltages and rack alarms to the cartridges, routing of signal cables,connection of groundings, as well as installation planning and work order.

Data units are ready to operate after their installation into a cartridge andconnection of signal cables.

The instructions for installation of the equipment into cartridges and cabling ofsignal interfaces are given below.

Always use a wrist grounding or other such protection when handling a plug-inunit removed from its package.

3.2 Mounting of units into cartridges

3.2.1 Power supply

When a unit is inserted into its location in a cartridge, the central battery voltageis connected through the motherboard of the cartridge and the back connectorPB1 of the unit. At the same time, the unit is also grounded to the cartridge body.


Operating Manual

Figure 9. Back connector PB1

3.2.2 Equipping

Connectors of the cartridge motherboards and back connectors of the units arestandardised so that voltages and rack alarm signals conveyed by them are alwayslocated in the same place. Due to this, no unit location in a cartridge is reservedfor a particular set of equipment.

The unit can be installed in any TM4 cartridge equipped with a MUX unit and itcan be inserted in any unit location. A cartridge can also house other equipmentof the Nokia ND equipment generation.

A data unit takes one unit location (width 5 T) in a cartridge. Figure 10 shows anequipping example: three data units are mounted in a 20 T cartridge.

a1

c b a

a2a3a4a5a6a7a8a9a10a11a12a13a14

a20a21

a24a25a26a27a28a29

a32

Back connector PB1

a19

MP5V For testing

MN12VMP12V For testingMN5V For testing

a15

a17a18

a16

a23

VNBVPB

Battery voltage, negativea30a31 Battery voltage, positive

For testing

VAP5 External aux. voltage +5 Va22GND Ground


Installation

Figure 10. Equipping in a 20 T cartridge

3.3 Signal interfaces, cabling and jumper settings

Data and timing signals conveyed between data channels and a terminalequipment are cabled to two connectors on the unit's front edge (see Figures 11 -16).

3.3.1 Connectors and cables

Data unit connectors are male Euroconnectors.

NOKIA

Rack

LOCATION UNIT CHANNELS

1234

MUX unitData unit 1Data unit 2Data unit 3

1...21...21...2

1 2 3 4

MUX DIU DIU DIU

P1 P1

P1

P3

20 Tcartridge

P2 P2 P2

P1


Operating Manual

Recommendations regarding suitable cables and connectors for balanced cabling,and work instructions for the recommended cables can be found in the OperatingManual for the TM4 Construction Practice.

3.3.2 Signal interfaces

Figures 11, 12 and 13 present the pin configuration for all possible interfacesignals at different interfaces. The direction of signals is implied with respect tothe data unit (an arrow towards the circle is an incoming signal and vice versa).

Figures 14 - 16 present a cabling example where the DTE is connected to the dataunit with different timing alternatives. Regarding data and control signals, thedata unit always operates like the DCE. Timing signals, however, can also operatelike the DTE. If the data unit is connected to a DCE, the data and control signalsmust be crossed and the timing alternative selected must be codirectional (RS-449and V.35). At the X.21 interface, you can choose either internal or externaltiming. Table 3 presents a connection example of data and control signals whenthe data unit is connected to the DTE and DCE.

Table 3. Connection example of signals to DTE and DCE

DIU DTE DCE

102 102 102

103 103 104

104 104 103

105 105 109

106 106 108

107 107 -

108 108 106

109 109 105


Installation

Figure 11. V.11 interface

Channel Use Direction SignalSignal Direction Use Channel

TU 21124 & TU 21124.05n x 64 kbit/s, V.11/V.35/X.21 DIU, V.11 interface

MMHS 2 x 8 x 2 x 0.4 + 0.4

3a 3c2a 2c1a 1c

5a4a 4c

2a1a

2c1c

5c

18a 18c

3a

19c19a

4a5a 5c

3c4c

14a

17c17a

15a16a

13a

16c15c14c13c

9a

12a

10a11a

9c

12c

10c11c

6c6a7a 7c8a 8c

19a

9a8a7a6a

18a17a16a

10a11a

15a

13a12a

14a

10c11c12c

6c

9c8c7c

27a

29a28a

24a

31a32a

30a

20c

22c21c

25a26a

29a30a

28a

26a27a

24a25a

31a32a

TimingTimingControl

1

11

11

DataData

ControlGround 1

1

1 Control

TimingTimingControl

2

22

22

DataData

ControlGround 2

2

32c31c

29c30c

27c28c

25c24c

26c

23c

1

11

11

111

1

TimingTimingControl

DataData

Timing

Control

ControlControl

19c

17c18c

16c15c

13c14c

29c30c

28c

26c27c

25c

31c32c

2

22

22

2

TimingTimingControl

DataData

Control

Timing

Control

ControlControl

23c24c

22c

20c21c

2

2

22

23a

20a

22a21a

Control

1

1

Timing

ControlControl 1

1

Control

Timing

ControlControl

20a

23a22a21a

2

2

22

P1

P2

RTbRSb

TTb

SDbRDb

SGCSb

TRb

STbRRbDMb

TTa

SDaRDa

RTaRSa

TRa

CSa

STaRRaDMa

RTbTTb

SDbRDb

SG

RSb

TRb

CSb

RRbDMb

STb

RSaCSa

TTa

SDaRDa

RTa

STa

TRa

RRaDMa


Operating Manual

Figure 12. V.35 interface


TU 21124 & TU 21124.05n x 64 kbit/s, V.11/V.35/X.21 DIU, V.35 interface

MMHS 8 x 2 x 0.4 + 0.4

32c31c

25a

29a 29c30c30a

3a2a1a 1c

27a

29a 29c28a

30c

24a23a

26a27c

20a

28a 28c

28c

31a32a

30a

25c24c

26c

23c

20a

22a21a

20c

22c21c

26a 26c27a 27c

23a22a21a

24a25a 25c

23c24c

22c

20c21c

31c31a32a 32c

5a4a

19c

17c18c

16c

19a

9a8a7a6a

18a17a16a

10a11a

15a

13a12a

14aDataDataTimingTimingTimingControl

Control

2

2

22

2

22

3c2c

4c

15c

13c14c

12c

DataDataTimingTiming

2

2

22

5c

10c11c

6c

9c8c7c

TimingControl

Control2

22

Ground2

2a1a

18a19a

3a

19c

4a5a

17a

14a15a16a

13a12a

10a11a

6a

9a

7a8a

TimingTimingTiming

1

1

11

1

11

DataData

Control

Control

Ground

DataDataTimingTimingTimingControl

Control

2c1c

3c

18c

1

1

11

1

111

4c5c

17c16c15c14c13c12c

6c

10c11c

9c

7c8c

P1

P2

1Control

Control 2

114b115b

113b

103b104b

105

107

106

113a

103a104a

114a115a

109

108

102

114b115b

113b

103b

105

104b

107

106

113a

103a104a

114a115a109

108

102


Installation

Figure 13. X.21 interface


TU 21124 & TU 21124.05n x 64 kbit/s, V.11/V.35/X.21 DIU, X.21 interface

MMHS 8 x 2 x 0.4 + 0.4

3a 3c2a 2c1a 1c

5a4a 4c

5c

9a8a7a6a

17a16a

17c16c

10a11a

15c15a

13c13a12a

14c14a

10c11c12c

6c

9c8c7c

TimingTimingControl

111

DataData

Control

Ground

11

1

1

TimingTimingControl

2

22

22

DataData

2

Control 2

Ground

2a1a

3a4a5a

14a13a

9a

12a

10a11a

6a7a8a

19a 19c18a 18c

29a30a

20a

28a

26a27a

23a22a21a

24a25a

31a32a

17a

15a16a

18a

29a

31a32a

30a

19a

27a28a

24a23a

20a

22a21a

25a26a

DataDataTimingTimingControl

Control

DataDataTimingTimingControl

Control

2c1c

5c

3c4c

17c16c15c14c13c

9c

12c

10c11c

6c7c8c

29c30c

28c

26c27c

25c

23c24c

22c

20c21c

31c32c

2

22

22

2

18c19c

32c31c

29c30c

27c28c

25c24c

26c

23c

20c

22c21c

1

1

11

1

1

P1

P2

SbCb

Xb

TbRb

G

Ib

Xa

TaRa

SaCa

Ia

SbCb

Xb

TbRb

G

Ib

Xa

TaRa

SaCa

Ia


Operating Manual

Figure 14. Cabling at the V.11 interface

c31

a25

connector pins

channel

1

2

1 c28

wires

connectorcable

a27

2

connectorbasic

cable

cable

use signal

blu

orn

wht/blubluwht/orn

wht/brn

a

P1

P2

orn

brngry

a26

b

a20

c23

c30a30

a23

c27c26

a22 c22

c21

-

a31

signal

wht/gry

pair

a28

a21c20

datadata

clockclockcontrolcontrolcontrol

controlcontrolground

SDbRDb

STbRTb

SDaSDa

STaRTa

RSb RSaCSb CSaRRb RRa

DMb DMaTRb TRaSG -

12345

TU 21124 & TU 21124.05n x 64 kbit/s, V.11/V.35 DIU, V.11 interface

grn wht/grn c29a29 clock TTb TTa

unit

blk/blublublk/ornorn

678 grn blk/grn

Sheath GND

GNDSheath

MMHS 2 x 8 x 2 x 0.4 + 0.4

wht/blubluwht/orn

wht/brn

orn

brngry wht/gry

12345

grn wht/grn


678 grn blk/grn

--

--

--

--

--

--

--

--

--

--

- - - --

c31

a25

1

2

c28a27

blu

orn

wht/blubluwht/orn

wht/brn

orn

brngry

a26

a20

c23

c30a30

a23

c27c26

a22 c22

c21

-

a31

wht/gry a28

a21c20

datadata

clockclockcontrolcontrolcontrol

controlcontrolground

SDbRDb

STbRTb

SDaSDa

STaRTa

RSb RSaCSb CSaRRb RRa

DMb DMaTRb TRaSG -

12345

grn wht/grn c29a29 clock TTb TTa


678 grn blk/grn

wht/blubluwht/orn

wht/brn

orn

brngry wht/gry

12345

grn wht/grn


678 grn blk/grn

--

--

--

--

--

--

--

--

--

--

- - - --

*)**)

*) In use, when codirectional timing has been selected**) In use, when contradirectional timing has been selected

The timing mode selection is a software setting that can be setusing a Service Terminal, for example.

*)**)


Installation

Note

Note

Signals that were earlier marked with + and − are now marked with a and brespectively, conforming to ITU-T standards.

Figure 15. Cabling at the V.35 interface


c15

connector pins

channel

1 c11

wires

connectorcable

a10

2

connector

cable

cable

use signala

a7

b

c12

c14a14

a12

c10c7

a9 c9

a15

signalpair

a11

datadata

clockclockcontrolcontrolcontrol / ground

103b104b

114b115b

103a104a

114a115a

105 109107 108106 102

TU 21124 & TU 21124.05n x 64 kbit/s, V.11/V.35 DIU, V.35 interface

GND

GNDSheath

MMHS 8 x 2 x 0.4 + 0.4

wht/blubluwht/orn

wht/brn

orn

brngry wht/gry

12345

grn wht/grn


678 grn blk/grn

Sheath

wht/blubluwht/orn

wht/brn

orn

brngry wht/gry

12345

grn wht/grn


678 grn blk/grn

P1

c13a13 clock 113b 113a

c15

c11a10a7

c12

c14a14

a12

c10c7

a9

a15

a11

datadata

clockclockcontrolcontrolcontrol / ground

103b104b

114b115b

103a104a

114a115a

105 109107 108106

P1

c13a13 clock 113b 113a

*)**)

*) In use, when codirectional timing has been selected**) In use, when contradirectional timing has been selected


*)**)

c9 102


Operating Manual

Note

Figure 16. Cabling at the X.21 interface


3.3.3 Marking of cabling

Cables are to be marked so that it is later possible to see where they lead.Markings should specify the equipment and connectors concerned. Cablinginformation is also recorded on the marking card delivered with the equipment.

Instructions for cable markings can be found in the Operating Manual for theTM4 Construction Practice.


c31

connector pins

channel

1

wires

connectorcable

a27

2

connector

cable

cable

use signala

a22

b

c28

c30a30

a28c27c22

a25 --

a31

signalpair

-

datadata

clockcontrolcontrolground-

TbRb

Sb

TaRa

SaCb CaIb IaG -- -

TU 21124 & TU 21124.05n x 64 kbit/s, V.11/V.35 DIU, X.21 interface

GND

GND

Sheath

Sheath

MMHS 8 x 2 x 0.4 + 0.4

wht/blubluwht/orn

wht/brn

orn

brngry wht/gry

12345

grn wht/grn


678 grn blk/grn

c29a29 clock Xb Xa

P1

c31

a27a22

c28

c30a30

a28c27c22

a25 --

a31

-

datadata

clockcontrolcontrolground-

TbRb

Sb

TaRa

SaCb CaIb IaG -- -

wht/blubluwht/orn

wht/brn

orn

brngry wht/gry

12345

grn wht/grn


678 grn blk/grn

c29a29 clock Xb Xa

P1

*) In use, when external clock has been selected**) In use, when internal clock has been selected

*)**)

*)**)


Installation

3.3.4 Selecting polarity of 114 clock (V.11 and V.35)

When a contradirectional V.11 or V.35 interface is used, the DIU unit sends a so-called fetch clock to the terminal equipment for reading data from the terminalequipment to the DIU. The data is read to the DIU unit on the leading edge of theclock and correspondingly the terminal equipment sends the data on the trailingedge of the clock. Because of this, the delay due to the cable between the unit andthe terminal equipment and the terminal equipment's X clock in −> data out mustbe max.:

Tdelay = (Tc / 2) − (Td + Ts)

where:

Tc = cycle time of 114 clock

Td = delay caused by channel block ports (approx. 60 ns)

Ts = settling time of the DIU's Nx64 ASIC (approx. 30 ns)

On the other hand, if the delay is greater than

Tc / 2

but smaller than

Tc + (Tc/ 2) − (Td + Ts),

the situation is that there is no danger that the changing moment of the data fallson the leading edge of the clock at the DIU unit.

The minimum delay is then:

Tdelay min = (Tc /2) − Td + Th

where:

Tc = cycle time of 114 clock

Td = delay caused by channel block ports (approx. 60 ns)

Th = hold time of the DIU's Nx64 ASIC (approx. 40 ns)

The delay in the signal due to the cable is about 7 ns/m. For example, a 2 m cablecauses the following delay for the signal:


Operating Manual

Example:

At the transmission rate of 31x 64 kbit/s the cycle time of the clock is:

This means that with the clock's normal polarity the delay due to the cable andterminal equipment may be max.:

Tdelay max = (504 ns / 2) − (60 + 30) ns = 162 ns

or the delay must be min.:

Tdelay min = (504 ns / 2) − 60 ns + 40 ns = 232 ns

That is, the 114 clock needs to be inverted if delays due to the cabling andterminal equipment are in range:

(Tc / 2) − (Td + Ts) ≤ Tdelay ≤ (Tc / 2) − Tdmin + Th

If the delay due to the terminal equipment is not given, we recommend to measureit with an oscilloscope, for example.

3.3.5 Jumper settings

Figure 17 shows the factory jumper settings for selecting polarity of the 114 clockand the use of memory circuit.

114 clock between DIU - terminal equipment 2 x 7 ns = 14 ns

data between terminal equipment - DIU 2 x 7 ns = 14 ns

total 28 ns

Tc =1

31 x 64000 1/s= 504 ns


Installation

Figure 17. Jumper settings, polarity of the 114 clock and the use of memorycircuit

P1 PB1

TU 21124 NR2C

NR4

NR2C Use of 1Mb memory chip

P2

NR3

a ba: use lower halfb: use upper half

NR3 Polarity of 114-clock channel 1a b

a: clock invertedb: normal clock

NR4 Polarity of 114-clock channel 2a b

a: clock invertedb: normal clock

Not connected

Connected

Jumpers:

Key to the jumper settings:


Operating Manual


Operation

4 OperationThis chapter describes the operation and maintenence of the Data Interface Unit.

The covered topics are:

• Start-up of the unit (Section 4.1.2)

• Software settings (Section 4.1.3)

• Removing unit from the cartridge (Section 4.1.4)

• Alarms (Section 4.2.1)

• State and fault messages (Section 4.2.2)

• Fault locating (Section 4.2.3)

• Performance measurements (Section 4.2.4).

4.1 Introduction

4.1.1 General

Operation of DIU units is controlled via the service interface of the MUX unitusing the Service Terminal. Through this interface, equipment state and alarmdata are read, controls and settings are given, loopbacks are set, etc.

If service interfaces have been connected into a bus and the buses have beenfurther connected into a service network by means of a data channel, allequipment connected to the bus or network can be remote-controlled from onepoint using the Service Terminal or Transmission Management System TMS (seethe Operating Manual for the TMS Transmission Management System).

Chapter 5 “Operation with Service Terminal” in this operating manual describesthe service menus obtained from the equipment and their use. For the ServiceTerminal there is a separate Operating Manual.


Operating Manual

Note

A data unit is ready to operate after its installation into a cartridge equipped witha MUX unit and connection of signal cables. Before commissioning, however,identifications and settings should be checked, required changes in the factorysettings made, and statistics and error counters reset.

Commissioning measurements are not necessary.

4.1.2 Start-up of data unit

1. Insert the data unit, the DYNACARD-MUX (DM 2, DB 2 or DN 2) andany other units that may be included in the configuration in a DM 2, DB 2or DN 2 equipment cartridge.

2. Connect the Service Terminal to the service connector of theDYNACARD-MUX and establish a connection to the equipment(connection cables not connected):

3. The green LED is lit to indicate that a connection from the ServiceTerminal to the equipment has been established.

Whenever a new plug-in unit is inserted in a unit location, it should be providedwith default settings:

4. Perform equipment installation by installing all units:

Verify:

Response:OBJ 7 RET

Current object:AD 4095/DM29600 bit/s/EOB/

TOP 6 9 u ,, , 1 RET, 1

- (duration approx. 10 s)

TOP 6 2 3 RET

Response:

Installing/EOB/

, ,


Operation

5. Check error messages given by the equipment:

If errors are found, check the configuration of the equipment.

4.1.3 Software settings

Set the following settings for both channels (default setting with italic):

• Set connection type for the channel (RS-449/V.35/X.21) and select theclock (codirectional/contradirectional/RCLK/TCLK/external clock)

6,9,u,3,channel,3,1-3,1-2 or 1-3

• Select time slot(s) for the channel (time slot no. = channel no.)

6,9,u,3,channel,2,1,time slot

• Select transmission rate (1 x 64 kbit/s)

6,9,u,3,channel,4,1

• If signalling is used on the channel, the signalling time slot must be one ofthe time slots selected for the channel, but not time slot 16! (signalling timeslot no. = channel no.)

6,9,u,3,channel,5,1

• Set channel into use (channel in use/not in use)

6,9,u,3,channel,1,1

4.1.4 Removing unit from a cartridge

A unit must be provided with the following software settings when it is removedfrom a cartridge:

TOP 6 2 0 RETResponse:

DIU 64k unit 2/EOB/

, ,

TOP 1 RET


Operating Manual

• Take the channels out of use by selecting

6,9,u,3,n,1,2

• Remove the unit from the configuration by selecting

6,2,2,u

4.2 Maintenance

The equipment does not require scheduled maintenance. Maintenance is neededonly when the equipment indicates with alarms that there is a fault. Accurate dataconcerning the equipment state and nature of the fault are obtained via the ServiceTerminal.

Additional data on condition of the equipment and on signal quality are obtainedfrom measurements and statistics made by the equipment itself. Measurementresults and statistics are read with the Service Terminal.

The Service Terminal can also be used to carry out tests and set on loopbackspossibly required in fault location.


Operation

4.2.1 Alarms

Figure 18. Alarm indication, general principle

Interpretation of alarms at equipment level

When the red service LED is lit, there is a serious fault in the equipment and theequipment usually has to be replaced with a new one. The red service LED, redrack alarm lamp and programmable alarm output PA1 are activated by means ofan external auxiliary voltage.

When the yellow service LED is lit, the signal received by the equipment may befaulty. The alarm can also be triggered by a controlled service function performedin the equipment (for example, loopback or forced indication). The equipmentindicating the alarm is not necessarily faulty: alternatively, the fault may be in thefar-end equipment or signal cabling.

The green service LED is lit when the equipment is connected to the ServiceTerminal.

Interpretation of alarms at unit level

Operation of the unit's logic section can be superficially checked by observingstates of the unit's service LEDs.

RACK ALARM LAMPS

SERVICE LEDS

red

yellow

green

red alarm A

white

yellow

alarm B

alarm D(reminder of alarm

(prompt)

(deferred)

serious fault in the equipment

fault in the signal received bythe equipment, equipment fault,

equipment connected to theService Terminal

or controlled service function(e.g. loopback) in the equipment

cancellation)


Operating Manual

• The red service LED is lit when the unit is faulty. Note: If there is a powersupply fault, the red LED is lit even if the fault were outside the unit.

• The yellow LED is lit when the fault is somewhere else in the equipment.

• The green service LED is lit when transmission management actions aredirected to the unit via the service interface on the MUX unit.

4.2.2 State and fault messages

The following table describes the state and fault messages of the equipment thatare obtained by the Service Terminal through the service menu option 1 Faultdisplay. The rack alarm/service LED indication in each situation is alsoindicated.

4.2.3 Fault locating

In fault conditions, an alarm is sometimes received simultaneously from severalequipment. This is due to the fact that the effect of a fault spreads along the signalpath with the faulty signal. Usually, however, the set of equipment that hasdetected the fault transmits the AIS signal whereupon the other equipment do notgive an alarm but indicate the AIS.

Table 4. Indication of fault conditions

Fault code(HEX.)

Fault condition Rack alarms LEDs

00H Power supply fault A red

11H Loop to terminal B yel.

14H Blocked from use A yel.

16H Loop to equipment B yel.

17H Test mode B grn.

31H Incoming 64k missing B yel.

71H Buffer over/underflow B yel.

80H Equipment fault A red

8EH Installation fault B red

95H Forced fault indication B yel./ red/ grn.


Operation

Note

If it is not possible to locate the fault on the basis of fault data provided by alarmsand the Service Terminal, use of equipment and interface loopbacks may be ofhelp.

Loopbacks and signal path tests disconnect the traffic. If loopbacks are notcancelled, they remain in effect during the whole time set for controls.

4.2.4 Performance measurements

Since the equipment itself collects data on signal quality and error occurrencesand indicates faults by alarms, only few performance measurements carried outwith separate measurement instruments are required. However, measurementscan be performed if desired.

Operating voltages can be measured and the result read with the ServiceTerminal. If the operating voltages deviate from the recommended values, weadvice to check the equipment. The allowed variation range of the voltages is ±5% from the nominal voltage.


Operating Manual


Operation with Service Terminal

5 Operation with Service TerminalThis chapter shows the service menu diagrams of the DIU unit. The diagramsconsist of rectangular boxes (representing Service Terminal displays) which havebeen arranged in hierarchical fashion: the main menu is shown on the top left ofthe page and the submenus proceed downwards and to the right of the main menu.

The following menus are covered:

• setting and reading identifications

• setting temporary controls

• setting and modifying permanent settings

• reading measurement results

• conducting tests.


Operating Manual

5.1 Service menus

1)

TOP

Select operation:1 Fault display2 Local alarm cancel3 Reset local cancel4 Identifications5 Controls (temporary)6 Settings (permanent)7 Measurements8 Statistics9 Testing

10 User privileges11 Miscellaneous

SERVICE TERMINAL MENUS FOR DATA UNIT V.11 / V.35 / X.21

Enter unit selection: 9

Select unit number:(unit slot in cartridge)

4-9

9

DIU nx64 kbit/s Identifications:3 User manual5 Hardware ID6 Program version7 Modify IDs

DIU nx64 kbit/s Unit Controls:0 Display controls1 Controls to normal

4 Forced indication

DIU nx64 kbit/s Settings:0 Display settings1 Set defaults3 Channel settings4 Slip alarm limit5 Meas. loop time limit7 A/D Calibration

DIU nx64 kbit/s Measurements:0 Fault display

DIU nx64 kbit/s Testing: VCO tuningRead 8 byteTest DIC

123

3 Measure loop

4,9,u

5,9,u

6,9,u

7,9,u

9,9,u

Select main level:4...9

8 Read/load settings

1 Voltage measurements2 Signalling

DIU nx64 kbit/s Statistics

8,9,u2)

2) Not implemented

9 Use of sync. block

1)

1)

1)

1)

1)

1) Menu path continues. See the following pages.



4,9,u

DN00103405 Issue 1

TU 21124.05 05A

TS 25440 13A

Modify IDs5 Hardware ID

Identification:0 Display1 Modify

Give new ID:1-15 characters

4,9,u,3

4,9,u,5

4,9,u,6

4,9,u,7 4,9,u,7,5

4,9,u,7,5,1

IDENTIFICATIONS:

DIU nx64 kbit/s Identifications:3 User manual5 Hardware ID6 Program version7 Modify IDs

5,9,u

Sel. chan.:

Select indicator:

5,9,u,3

5,9,u,4

Select loop type:1 Short loop to DTE2 Long loop to DTE3 Loop to MUX

0 Display loop state1 Set loop on2 Remove loop

CONTROLS:

1 or 2

1 Red2 Yellow3 Green

Set indicator state:0 Display state1 Set forced state2*Set nonforced state

Set forced state:1 On2 Off

5,9,u,4,1-3

5,9,u,4,1-3,1

5,9,u,3,1-2

DIU nx64 kbit/s Unit Controls:0 Display controls1 Controls to normal

4 Forced indication3 Measure loop

Loop controls:

5,9,u,3,3,1-2,1-3


Operating Manual

1) Menu path continues.

DIU nx64 kbit/s Settings:0 Display settings

3 Channel settings4 Slip alarm limit5 Meas. loop time limit7 A/D Calibration

Sel. chan.:1 or 2

Display DIU nx64 kbit/sSettings:1 All unit settings

Channel settingsCommon settings

23

Slip limit:0 Display1 Set limit

Set limit slips/min.:

SETTINGS:

Give measured supplyvoltage without sign:(4000...14000 mV)

Set limit:

6,9,u

1 Set defaults


6,9,u,0

6,9,u,3

6,9,u,5

6,9,u,7

6,9,u,4

6,9,u,0,2

1)

6,9,u,4,1-2

6,9,u,4,1-2,1

6,9,u,5,1

6,9,u,7,1-4

1...255 slips/min

1...254 minutes255 = No time limit

6,9,u,1

Are you sure?99 Set defaults

6,9,u,8

Read/load Settings:0 Display setup ID1 Read from Unit2,* Load to Unit

(* = <INV> <DATA>)


6,9,u,9 *) 6,9,u,9,1

*) in TU 21124.05 only

Meas. loop time limit:0 Display limit

Set limit1

Select voltage:1 +12 V2 + 5 V3 - 5 V4 -12 V

Use of sync. block:0 Display1 In use2 *Not in use

Give 1st prior.channel (1 or 2)

1 Transmit2 Receive3 Error-free minute

Give transm. direction:

Sel. chan.:1 or 2

Error-free minute:0 Display1* Enable2

6,9,u,4,3

See the following pages.

Disable



Give channel:1 or 2

6,9,uChannel state:0 Display

Channel in useChannel not in use

12*

TS selection:0 Display

Set TS1

Connection type:0 Display

RS-449V.35

1*2

Transmission rate:0 Display

Set trans. rate1

Signall. TS selection:1 Display

Set signall. TSRemove signall. TS

23

6,9,u,3,n,1

6,9,u,3,n,2

6,9,u,3,n,3

6,9,u,3,n,4

6,9,u,3,n,5

How many timeslots:1...31

6,9,u,3,n,2,16,9,u,3

CHANNEL SETTINGS:

n6,9,u,3,n

DIU nx64 kbit/s Channel nSettings:1 Channel state

TS selectionConnection typeTransmission rateSignal TS selectionHandshake filtering

2345678

AIS sending permissionLoss of incoming signal

9 Forced signalling10 Selection of 106 signal

2 Remove TS

6,9,u,3,n,6-101)

6,9,u,3,n,4,1

6,9,u,3,n,5,1

1*2

6,9,u,3,n,3,1-2

6,9,u,3,n,3,33 X.21

TS selection:1 Manual selection

Autom. selection2

6,9,u,3,n,2,1,m m

DIU nx64 kbit/s Settings:0 Display settings1 Set defaults3 Channel settings4 Slip alarm limit5 Meas. loop time limit7 A/D Calibration

6,9,u,3,n,2,1,m,1

6,9,u,3,n,2,1,m,2

8 Read/load settings9 Use of sync. block

Select trans. rate:(1...31) x 64k

Select signall. TS:1...31

Clock selection:ContradirectionalCodirectional

Clock selection:1 Internal from RCLK2 Internal from TCLK

Give timeslot:1...31

Give starting TS:1...31

3 External

1) Menu path continues.See the following pages.


Operating Manual

6,9,u,3,n,7

6,9,u,3,n,8

6,9,u,3,n,9

6,9,u,3,n,7,1-2

6,9,u,3,n,8,3

CHANNEL SETTINGS:

Give channel:1 or 2

6,9,u,3

n6,9,u,3,n

6,9,u,3,n,1-5

6,9,u,3,n,9,1-5

6,9,u,3,n,9,1-5,2

6,9,u,3,n,6

Handshake sign. filtering:0 Display1 Set on2* Set off

DIU nx64 kbit/s channel nsettings:1 Channel state

TS selectionConnection typeTransmission rateSignal TS selectionHandshake filtering

2345678

AIS sending permission

9Loss of incoming signalForced signalling

6,9,u

DIU nx64 kbit/s Settings:0 Display settings1 Set defaults3 Channel settings4 Slip alarm limit5 Meas. loop time limit7 A/D Calibration8 Read/load settings9 Use of sync. block

AIS sending direction:1 AIS to DTE

AIS to MUX2

Loss of incoming signal:0 Display1*2 Disable alarm3 Data supervision

Select signal:1 RS

CSDM

234 TR5 RR

AIS sending permission:0 Display

Enable AISDisable AIS

1*2

Data supervision:12* Disable

Signal state:0 Display

Set nonforced stateSet forced state

1*2

Set forced state:1 Force signal ON

Force signal OFF2

1) Menu path continues.

1)

10 Selection of 106 signal

Enable alarmEnable

See the following pages.

6,9,u,3,n,10Selection of 106 signal:0 Display1 105 1062 108 106

6,9,u,3,n,10,2

Set 105 106 Delay1 Short2 Long



5.2 General

Data unit is controlled with the Service Terminal or Transmission ManagementSystem TMS (see the corresponding operating manuals). The Service Terminalor TMS can be used for performing basic settings of the equipment and storingthem into a non-volatile storage (replaces jumper settings), performing

MEASUREMENTS:

DIU nx64 kbit/s Measurements:

1 Voltage measurements

DIU nx64 kbit/s Testing:VCO tuningRead 8 byteTest DIC

Sel. chan.:

Give address:0,...,65535

TESTING

Voltage measurements:1 + 12V234

+ 5 V- 5V- 12V

Sel. chan.:1 or 2

1 or 2123

7,9,u 7,9,u,1

0 Fault display

2 Signalling

Sel. chan.:1 or 2

7,9,u,2

9,9,u

STATISTICS:

DIU nx64 kbit/s Statistics:

8,9,u

2) 2) Not implemented

9,9,u,1

9,9,u,2

9,9,u,3 9,9,u,3,1-2

Test DIC:0 Display1 Test2 Set data

9,9,u,3,n,2

Set data:0 Display1 Set data

9,9,u,3,n,2,1

Set data:0...255


Operating Manual

maintenance related functions, for example loopbacks, and readingidentifications, statistics and other information from the equipment.

Figure 19. Service Terminal keys

Command parameter separator

Service Terminal functions are menu-driven. Menu levels can be bypassed if youknow the required command strings. Command parameters are separated fromeach other with the , key. For example, if 5,9,3,2,1,1 is given at the main level,the 64k signal coming to channel 1 of the data unit is connected back to theterminal equipment, that is, a short interface loopback is performed. In theexample, the unit is installed in unit location 3.

5.3 Service Terminal main menu

When the Service Terminal is switched on, it shifts into the Use ofequipment/Select operation mode, which is the factory setting. The main menucommon to all equipment, offered by the Service Terminal, is displayed:

ONOFF

Select operation:1 Fault display2 Local alarm cancel3 Reset local cancel

DATA

AUTO

F1MODE

F2OBJ

F3TOP UP

HELP >...

STO RCL DEF

D E FINV

A B CDEL

EXP . #RET,0-

7 8 9 ASCII

4 5 6

1 2 3

F4



1 Fault display

The fault display indicates the fault situation of the equipment. The informationcontained in the fault data includes:

• equipment ID (for example, DM 2 ABC)

• fault category (A, B, D, S or combination of these)

• control block indicating the fault

• fault type.

The equipment ID is set by the operator in the Identifications menu. The faultdisplay is not related to just a one unit, it concerns the entire equipment.

2 Local alarm cancel

In a fault situation, the Local alarm cancel option cancels rack alarms A and B.As a reminder of cancelling, alarm D is given. Cancelling without a fault situationproduces a B-alarm. The Local alarm cancel menu item concerns the entireequipment.

3 Reset local cancel

The normal situation is restored in the equipment.

4 Identifications

Under this function, the equipment identifying data, such as equipment type, thename given to it and the type and version of the program used, can be read. Someof the identifications can be modified by the operator.

Select operation:

1 Fault display

2 Local alarm cancel

3 Reset local cancel

4 Identifications

5 Controls (temporary)

6 Settings (permanent)

7 Measurements

8 Statistics

9 Testing

10 User privileges

11 Miscellaneous


Operating Manual

5 Controls (temporary)

Under this function, controls are given that temporarily change the operatingmode of the equipment. Such controls are, for example interface loopbacks.

6 Settings (permanent)

Settings determine the operating mode of the equipment. They are retained in theequipment storage also during a power outage.

7 Measurements

Under this function, various measurements made by the equipment itself, forexample voltage measurements, are performed.

8 Statistics

There are no statistics functions in use in this unit.

9 Testing

Automatic tests performed by the equipment itself.

10 User privileges

Protective functions of the equipment are found under this function. Some of theequipment facilities can be protected (for example, Settings). The equipment canbe given a password that must be known if protected facilities are to be modified.A single unit has no protective functions of its own.

11 Miscellaneous

This function covers the functions unsuitable for other classification (not yet inuse).

Access to data unit

Since the data unit is not provided with a service interface of its own, the servicefunctions must be directed to the data unit via the main unit (DYNACARD-MUX). First, select the main level menu (4...9), then 9 followed by a comma, andfinally the unit number: 4...9,9,unit. Unit numbering starts from 1 on the left.Now the menu of the unit concerned, below the main level, is displayed.

5.4 Data unit menus

Data unit is controlled via the service interface in the main unit (DYNACARD-MUX). The main unit provides the menus related to the common section of theequipment, and via the menus offered by it you can select a particular unit as anobject. The data unit provides the menus required for its control.



5.4.1 Fault display

The main unit collects fault data from other units into a common fault storage. Atthe initialisation stage, the main unit collects from each unit the fault-related data:faults that are active in the unit, their effect on alarm outputs, the fault code relatedto each fault, the way the fault is indicated (colour of the indicator), and the nameof the control block. The main unit generates a response to the fault inquiry. Thisresponse contains the following information:

• equipment ID (equipment name)

• fault status

• fault data:

- faulty object- fault type (fault code).

Example: *02A (ABS)

MUX-2M unit 1:

• incoming 2M missing

nx64k unit 3:

• power supply fault

The equipment, named 02A, has alarms A, B and S active. Fault messages comefrom the equipment interface 1 control block (unit 1), the fault being that theincoming 2 Mbit/s signal is missing, and from the control block of the nx64k dataunit (unit 3), the fault being a power supply fault. The nx64k data unit containsone control block and equipment interface.

Faults controlled in the data unit

• Power supply fault

• Forced indication

• Equipment fault (the A/D converter of HC11 does not function)

• Malfunction (after reset)

• Loop to interface

• Loop to equipment

• Buffer overflow

• Installation fault


Operating Manual

• Loss of incoming signal (data or clock)

• Blocking (time slots not allocated to the unit).

5.4.2 Identifications

4,9,u DIU nx64 kbit/s Identifications

In the menu, options 3, 5 and 6 display the equipment identifications. The IDunder option 5 can be modified with option 7.

4,9,u,3 User manual

The document number of the DIU unit's Operating Manual. The response is fixed.An example:

4,9,u,5 Hardware ID

Unit type designation and version designation. Set at the factory, but you canchange it, for example in connection with a repair. Response examples:

4,9,u,6 Program version

Program type and version; fixed. Response example:

DIU nx64 kbit/s Identifications:

3 User manual

5 Hardware ID

6 Program version

7 Modify IDs

DN00103405 Issue 1

TU 21124.05 05A

TU 21124 09A

TS 25440 13A



4,9,u,7 Modify IDs

Option 5 displays the menu:

Option 0 displays the type designation and version, and option 1 produces aprompt:

When the Service Terminal is used, letters contained in a new type designationmust be given in ASCII. The letter T, for example, is obtained by selecting:

5.4.3 Controls (temporary)

5,9,u DIU nx64k Unit Controls

5,9,u,0 Display controls

This option displays all controls set on in the unit. Response example:

Modify IDs:

5 Hardware ID

Identification:

0 Display

1 Modify

Give new ID:

1-15 characters

5 4 ASCII

DIU nx64 kbit/s Unit Controls:

0 Display controls

1 Controls to normal

3 Measure loop

4 Forced indication


Operating Manual

Red indicator is in Forced ON/OFF-state.

5,9,u,1 Controls to normal

This option forces all data unit controls to normal state (cancels loops and forcedcontrols of the indicators).

5,9,u,3 Measure loop

Both selections display the menu:

A short interface loopback connects back the transmission coming from the DTEimmediately after the line buffers. A long interface loopback connects back thetransmission from before the buffers of the MUX unit's internal bus. In anequipment loopback, the output signal of the equipment is connected back to theequipment from before the line buffers. All options display the following menu:

Option 0 displays the state of the selected loopback on the channel. Responseexample:

Channel 1: No loop

Channel 2: Short loop to DTE

Sel. chan.:

1 or 2

Select loop type:

1 Short loop to DTE

2 Long loop to DTE

Loop to MUX

Display loop state

1 Set loop on

2 Remove loop

Channel 1: Loop to MUX on



By option 1, the selected loop is set on for the selected channel. Selection of theoption causes an alarm B and a fault message on the loopback to the MUX to begiven. If an interface loopback is set on, AIS is sent to the MUX, and if anequipment loopback is set on, AIS is sent to the DTE. Only one loopback for achannel can be on at a time. If the loopback to be set on is not enabled at themoment of setting, the following text is displayed:

By option 2, the selected loopback is cancelled from the selected channel.

5,9,u,4 Forced indication

All options display the following menu:

Option 0 displays the state of the forced control of the selected indicator.Response example:

Option 2 cancels the forced control of the selected indicator, after which theindication is determined by the fault situation and the MUX commands.


One loop already set. No othet loops allowed

Select indicator:

1 Red

2 Yellow

3 Green

Set indicator state:

0 Display state

1 Set forced state

2*Set nonforced state

Red indicator is in forced ON state


Operating Manual

Option 1 turns the selected indicator on and generates an alarm B and a faultmessage on the forced indication.

Option 2 turns the selected indicator off and generates an alarm B and a faultmessage on the forced indication.

5.4.4 Settings (permanent)

Settings determine the operating mode of the equipment. The settings are retainedalso during a power outage.

6,9,u DIU nx64 kbit/s Settings

Selection 6,9,u on the main level displays the main menu of the settings:

6,9,u,0 Display DIU nx64 kbit/s settings

Option 1 displays channel states and time slots allocated for them.


Set forced state:

1 On

2 Off

DIU nx64 kbit/s Settings:

0 Display settings

1 Set defaults

3 Channel settings

4 Slip alarm limit

5 Meas. loop time limit

7 A/D Calibration



Display DIU nx64 kbit/s settings:

1 All unit settings

2 Channel settings

3 Common settings



The state of the selected channel, as well as the transmission rate, connectiontype, time slots allocated and signalling time slot are displayed.

Option 3 displays slip alarm limits of the receive and transmit buffers, time limitsof the test and measurement loopback and settings for the synchronisation block(for TU 21124.05 only). When the synchronisation block is in use, the settingsdisplayed include the 1st priority clock channel, the synchronisation rate, and theclock channel currently in use. If the clock is obtained from channel 0, theexternal clock of both channels is missing. When the synchronisation block is outof use, the text Not in use is displayed.

6,9,u,1 Set defaults

The program responds by displaying a new menu:

Sel. chan.:

1 or 2

Are you sure?

99 Set defaults

The default settings are:

Receive buffer slip alarm limit 10 slips/min.

Transmit buffer slip alarm limit 10 slips/min.

Test loop time limit 5 seconds

Measurement loop time limit 10 minutes

Connection type RS-449 contradirectional

Transmission rate 1 x 64 kbit/second

Time slot 1 on channel 1

2 on channel 2

Signalling time slot 1 on channel 1

2 on channel 2

AIS sending enabled in both directions

Forced controls and filtering of handshake signals off

Synchronisation block (in TU 21124.05 only) not in use


Operating Manual

6,9,u,3 Channel settings

Both selections display the following menu:

6,9,u,3,n,1 Channel state

Option 0 displays the channel state.

By option 1, time slots allocated for the channel are requested for use from theMUX. If any of the requested time slots is already in use, the command is notexecuted and a message on overlapping time slots is sent back to the ServiceTerminal.

By option 2, the MUX is requested to remove from use the time slots that arecurrently in use on the channel.

Loss of incoming signal Enabled

Data supervision Disabled

Selection of 106 signal 108 –> 106

Sel. chan.:

1 or 2

DIU nx64 kbit/s channel n settings:

1 Channel state

2 TS selection

3 Connection type

4 Transmission rate

5 Signal TS selection

6 Handshake filtering

7 AIS sending permission

8 Loss of incoming signal

9 Forced signalling

10 Selection of 106 signal

Channel state:

0 Display

1 Channel in use

2*Channel not in use



6,9,u,3,n,2 TS selection

Option 0 displays the time slots allocated for the channel.


After the number of time slots has been entered, the following menu is displayed:

When the Manual selection item is chosen, the menu displayed is:

Time slots are entered in this menu. Time slot 0 and the time slots alreadyallocated for other channels cannot be entered. The time slots allocated earlier forthe channel in question are automatically deallocated.

When the Automatic selection option is chosen, the menu displayed is:

Time slots are automatically selected from the given time slot or the nextunallocated one onwards. As a result, the selected number of unallocated timeslots, starting from the given one, will be allocated. If the number of unallocatedtime slots is not sufficient, time slot allocation is not performed. In this case, thefollowing message is given:

TS selection:

0 Display

1 Set TS

2 Remove TS

How many timeslots 1...31

TS selection:

1 Manual selection

2 Autom. selection

Give timeslot: 1...31

Give starting TS: 1...31


Operating Manual

In such a case, time slots will not be allocated. Time slot 16 can be allocated bothin the manual and automatic selection if signalling has been set out of use in theDM 2-MUX unit. Allocation of time slots will succeed only if the channel is notin use.

Option 2 (6,9,u,3,n,2,2) deallocates all time slots. The selection is enabled only ifthe channel is not in use.

6,9,u,3,n,3 Connection type

Option 0 displays the connection type.

By option 1, the RS-449 interface is selected and by option 2 the V.35 interface.Both selections are followed by the following menu:

Option 1 is used for selecting the contradirectional clock. The transmit andreceive sides have then their own individual clocks. Option 2 selects thecodirectional clock, in which case the transmit side obtains an external clock butthe receive side generates its clock inside the data interface.

6,9,u,3,n,3,3 Clock selection

Number of free TSs from given starting TS is insufficient

Connection type:

0 Display

1*RS-449

2 V.35

3 X.21

Clock selection:

1*Contradirectional

2 Codirectional

Clock selection:

1 Internal from RCLK

2 Internal from TCLK

3 External



When option 1 is selected, the clock of the X.21 interface is generated from thereceive direction clock (115). Selection of option 2 causes it to be generated fromthe transmit direction clock (114). By option 3, the external clock (113) is selectedin use.

6,9,u,3,n,4 Transmission rate

Option 0 displays the transmission rate currently in use.


All transmission rate alternatives are selectable, irrespective of the number oftime slots allocated. Only when an attempt is made to take the channel in use, itis checked whether the transmission rate and the number of selected time slotscorrespond to each other. A fault message is generated if necessary.

6,9,u,3,n,5 Signalling TS selection

Option 0 displays the signalling time slot.


Transmission rate:

0 Display

2 Set trans. rate

Select trans. rate:

(1...31) x 64 kbit/s

Signall. TS selection

0 Display

1 Set signall. TS

2 Remove signall. TS

Select signall. TS: 1...31


Operating Manual

The time slot whose signalling bits (in time slot 16) are used for transferring thesignalling is selected here. The time slot selected must be one of the data timeslots. If the selected time slot is not a data time slot, a fault message is displayedand you have to try again. Due to this, you must first allocate data time slots andonly after that a signalling time slot. If the signalling time slot is not changed afterthe data time slots are changed and, consequently, the signalling time slot is notone of the data time slots, a fault message is displayed when an attempt is madeto take the channel in use.

Option 2 (6,9,u,3,n,5,2) deallocates the signalling time slot. All handshakesignals going to the DTE are then set ON. Although the signalling time slot hasbeen deallocated, the handshake signals can be forced. However, forced controlsare not enabled before the signalling time slot is taken into use again.

6,9,u,3,n,6 Handshake filtering

Option 0 displays whether handshake signal filtering is on or off. Option 1 setsthe filtering on, and consequently the signal received from the far end is notchanged before three similar changes have occurred in succession. Option 2 setsthe filtering off.

6,9,u,3,n,7 AIS sending permission

Option 1 defines AIS to be enabled to the DTE and option 2 defines it to be sentto the MUX. Both selections are followed by the menu:

Option 0 displays whether sending of AIS in the selected direction is enabled.Option 1 enables sending of AIS in the selected direction. Option 2 disables it insuch fault situations which would normally require AIS to be sent.

Handshake sign. filtering

0 Display

1 Set on

2*Set off

AIS sending direction:

1 AIS to DTE

2 AIS to MUX

AIS sending permission:

0 Display

1 *Enable AIS

2 Disable AIS



6,9,u,3,n,8 Loss of incoming signal

Option 0 displays whether the “Loss of incoming signal” alarm is generated andshows the state of data supervision in case of a missing incoming signal.

Option 1 enables the “Loss of incoming signal” alarm in case of a missing timingsignal.

If connection type is X.21 Ext, V.35 codir or RS-449 codir, the alarm is generatedif the incoming timing signal is missing.

If data supervision is enabled, the alarm is generated in case of the missingincoming data. If AIS is enabled, it is also sent to the MUX unit in case of analarm.

Option 2 disables alarm and data supervision. In case of a missing signal, thealarm is not generated.

Option 3 displays the following menu:

Option 1 enables data supervision. In case of a missing data signal, the “Loss ofincoming signal” alarm is generated. If AIS is enabled, it is sent to the MUX unitin case of an alarm.

Option 2 disables data supervision.

Loss of incoming signal:

0 Display

1 *Enable alarm

2 Disable alarm

3 Data supervision

Data supervision:

1 Enable

2*Disable


Operating Manual

6,9,u,3,n,9 Forced signalling

All selections are followed by the menu:

Option 0 displays the state of the selected signal and option 1 sets it in thenonforced state. In this case, controls directed to the signal are transferredunchanged through the data interface.


Option 1 sets the signal in the forced ON state and option 2 sets it in the forcedOFF state.

When the forced control is on, other controls directed to the signal are ignored andthe signal is forwarded in the forced state. Forced controls remain valid until thesignal is set to the nonforced state again.

6,9,u,3,n,10 Selection of 106 (CS) signal

Select signal:

1 RS

2 CS

3 DM

4 TR

5 RR

Signal state:

0 Display

1*Set nonforced state

2 Set forced state

Set forced state:

1 Force signal ON

2 Force signal OFF

Selection of 106 signal:

0 Display

1 105 –> 106

2*108 –> 106



Option 0 displays the state of selection.


Signal 105 (RS) is transferred to the local end as signal 106 (CS). Signal 108 (TR)is not transferred and the channel-associated signalling (CAS) bit 'a' is set off.Signalling state of the signalling bit 'a' can be altered by forcing signal 108 withselection 6,9,u,3,n,9,4,2. By option 1, the state of signal 105 is made to pass intosignal 106 in 4 ms. By option 2, the respective delay is set to 28 ms.

Option 2 108 –> 106 sets it in the nonforced state. In this case, controls directedto signal 108 (TR) are transferred unchanged through the data interface to the farend as signal 106 (CS).

6,9,u,4 Slip alarm limit

This menu allows you to select the buffer whose alarm limit is to be displayed orset. Options 1 and 2 display the menu:

Option 0 displays the alarm limit currently in use and option 1 displays the menufor setting an alarm limit:

Set 105 –> 106 delay

1 Short

2 Long

Give transm. direction:

1 Transmit

2 Receive

3 Error-free minute

Slip limit:

0 Display

1 Set limit

Set limit slips/min:

1...255 slips/min.


Operating Manual

This menu is used to set a slip alarm limit for the buffer selected earlier. If thislimit is exceeded, a fault message is sent to the MUX. Depending on the bufferwhose overflow causes the alarm, AIS (if enabled) is sent to the DTE or the MUX.AIS is sent to the DTE when there is an over-/underflow in the transmit buffer andto the MUX when there is an over-/underflow in the receive buffer. A B-alarm isalso given.

Option 3 displays the following menu:

Option 0 displays whether the error-free minute is enabled or disabled.

Option 1 allows you to enable an error-free minute. In case of a buffer overflow,the alarm is set off if the slip limit has not been exceeded during the one-minutecounting period after data recovery. The alarm may stay on for about 1 to 2minutes after the data recovery.

By option 2, you can disable the error-free minute. In case of a buffer overflow,the alarm is set off if the slip limit has not been exceeded after data recovery. Thealarm may stay on max. one minute after the data recovery.

6,9,u,5 Measurement loop time limit

Option 0 displays the time limit and option 1 displays the menu:

This menu is used to set a time limit. If this limit is exceeded, the measurementloop is automatically set off. If the time limit is set to 255, you have to set theloopbacks off manually in the Controls menu (5,9,u,1-3).

Error-free minute:

0 Display

1 *Enable

2 Disable

Meas. loop time limit:

0 Display limit

1 Set limit

Set limit:

1...254 minutes

255 = No time limit



6,9,u,7 A/D Calibration

A voltage to be calibrated is selected from the menu. All selections are followedby the menu:

Calibration is performed on each voltage in connection with testing and it isperformed again only if the processor or the voltage reference circuit is replaced.

6,9,u,8 Read/load settings

The unit responds with a new menu:

Option 0 displays the unit setup ID which differs according to the typedesignation. The setup ID is used when interchangeability of unit settings isdefined. The settings can be copied only between such units that have the sameID.

By option 1, unit settings are read into the Service Terminal/TMS buffer. Byselecting 2,*, the settings contained in the buffer are saved to a unit, provided thatthe setup ID and the length of the settings are the same as the corresponding oldsettings in the unit. Selection 2,* must be made immediately after selection 1.

Select voltage:

1 +12 V

2 +5 V

3 -5 V

4 -12 V

Give measured supply voltage without sign:

(4000...14000 mV)

Read/load Settings:

0 Display setup ID

1 Read from unit

2,* Load to unit

(* = <INV><DATA>)


Operating Manual

Note

If the settings cannot be saved to the unit, it displays the text Functional error.If the settings are properly saved, the unit responds with the text done and resetsthe program after three seconds. Before the new settings are saved to the unit, werecommend you to provide the unit with default settings (command 6,9,u,1,1).

An example of reading and loading settings: Units in locations 3 and 4. Readsettings from unit 3 and load them to unit 4.

When settings are read from a unit and saved to another unit, channels must beout of use.

6,9,u,9 Use of sync. block (in TU 21124.05 only)

Option 0 displays the current settings for the synchronisation block. When thesynchronisation block is in use, information displayed includes the 1st priorityclock channel, synchronisation rate, and clock channel currently in use. Thesynchronisation rate and clock channel information are continuously updated. Ifboth of these pieces of information are zero, the external clock is missing fromboth channels. When synchronisation is out of use, the text Not in use isdisplayed.

Option 2 deactivates the synchronisation block. In this case, the 2.048 MHz clocksignal at connector P3 is disconnected.

2 , INV DATAASCII

RET

6,9,4,1,1 /* Default settings in unit 4 */

6,9,3,8,1 /* Read settings from unit 3 */

TOP /* Go to the top menu */

6,9,4,8,2,* /* Load settings to unit 4 */

/* Unit is reset in 3 seconds */

Use of sync. block:

0 Display

1 In use

2 *Not in use



Note

Selection of option 1 produces a new menu:

This menu allows you to select the 1st priority channel. The selected channel isalso the 1st priority synchronisation source for the 2.048 MHz clock to begenerated. The remaining channel has a lower priority and, consequently, it isswitched on only if the clock with a higher priority is missing or if its quality ispoor.

When the channel has been selected, the program checks the connection type ofthe channels and displays an error message Channel settings not OK! if theclock selected for the channels is neither codirectional nor external.

When the clocks are in order, transmission rates of the channels are read and thetransmission rate and connection information of the channel with the highestpriority are saved to the synchronisation block. After this, the synchronisationblock is enabled to start up.

Now the 2.048 MHz clock signal received from connector P3 is synchronisedwith the n x 64 kHz clock signal. If the channel with the highest priority fails,information of the channel with the lower priority is saved to the synchronisationblock. When the clock with the higher priority is recovered, its information isrestored in the block.

When synchronisation is used, transmission rate and connection type must be setfirst and they cannot be changed after the synchronisation block has been takeninto use. If an attempt to modify the settings is made, the text Sync. block is inuse is displayed. If changes are to be made, synchronisation must be taken out ofuse.

5.4.5 Measurements

Give 1st prior.

channel (1 or 2)

DIU nx64 kbit/s measurements:

0 Fault display

1 Voltage measurements

2 Signalling


Operating Manual

Option 0 is a fault display which shows the reason of channel-specific alarms thatmay occur. Selection of option 1 or 2 displays a new menu related to the function.

7,9,u,1 Voltage measurements

Options 1 to 4 display the current value of the respective voltage.

7,9,u,2 Signalling

This selection displays the current states of handshake signals. Forced controls donot affect the display with an exception of signals 106 and 107.

5.4.6 Statistics

8,9,u DIU nx64 kbit/s statistics 1)

1) Not yet in use.

5.4.7 Testing

Options 1 to 3 display a related menu.

Voltage measurements:

1 +12 V

2 +5 V

3 -5 V

4 -12 V

Sel. chan.:

1 or 2

DIU nx64 kbit/s Testing:

1 VCO tuning

2 Read 8 byte

3 Test DIC



Note

9,9,u,1 VCO tuning

The option can be used to tune the frequency of the voltage-controlled oscillator(VCO) which is used to generate clock signals for the channels. When tuning hasbeen done, default settings must be set on in the unit in order to activate thetuning.

The VCO oscillator has been tuned in conjunction with production testing.Therefore, we do not recommend the user to do the tuning.

9,9,u,2 Read 8 bytes

After the address has been entered, the contents of eight memory locations,starting from the address selected, are displayed on the Service Terminal.

9,9,u,3 Test DIC

The selection is followed by the menu:

Both options display the menu:

Option 0 displays the test result.

Sel. chan.:

1 or 2

Give address: 0 ... 65535

Sel. chan.:

1 or 2

Test DIC:

0 Display

1 Test

2 Set data


Operating Manual

Option 1 runs the test which causes a long interface loopback and an equipmentloopback to be switched on simultaneously on the selected channel. A byte fromthe control register is written in the data buffer. The byte is set in option 2 Setdata. This byte is compared to the byte which has passed along the test loop andreturned.

The status register is read to find out whether the bytes correspond to each other,and the result can be read by option 0. Running of the test takes approximately 2seconds.


DN00103405-1-V35(13A)

Documents

tm4 construction

transmission

transmit side

red service

td ts

unallocated

signalling

menu path