Tait TBBH5A Base Station Transceiver User Manual TB7100 Installation and Operation Manual

Tait Limited Base Station Transceiver TB7100 Installation and Operation Manual

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TBBH5A User Manual HTML Version

Exhibit D Users Manual per 2 1033 c3

TB7100 base station

Installation and

Operation Manual

MBB-00001-02

Issue 2

December 2005

2TB7100 Installation and Operation Manual

Tait Contact Information

Tait Radio Communications

Corporate Head Office

Tait Electronics Ltd

P.O. Box 1645

Christchurch

New Zealand

For the address and telephone number of

regional offices, refer to the TaitWorld

website:

Website: http://www.taitworld.com

Technical Support

For assistance with specific technical issues,

contact Technical Support:

E-mail: support@taitworld.com

Website: http://support.taitworld.com

To our European customers:

Tait Electronics Limited is an environmentally responsible company which

supports waste minimization and material recovery. The European Union’s

Waste Electrical and Electronic Equipment Directive requires that this

product be disposed of separately from the general waste stream when its

service life is over. Please be environmentally responsible and dispose

through the original supplier, your local municipal waste “separate

collection” service, or contact Tait Electronics Limited.

TB7100 Installation and Operation Manual 3

Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Enquiries and Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Updates of Manual and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Associated Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Publication Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.1 Frequency Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.2 RF Output Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.3 Power Supply Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.4 Mechanical Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.5 Product Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2 Mechanical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1 Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.2 UI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.3 Receiver Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.4 Transmitter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.5 SI Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.6 AC Power Supply Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3 Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.1 Receiver Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.1.1 RF Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.1.2 Digital Baseband Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.1.3 Audio Processing and Signalling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.2 Transmitter Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.2.1 Audio Processing and Signalling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.2.2 Frequency Synthesizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.2.3 RF Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.3 User Interface Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.4 System Interface Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.4.1 Internal Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.4.2 Serial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.4.3 General Purpose IO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.4.4 Receiver Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.4.5 Tone On Idle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.4.6 Transmitter Audio Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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3.4.7 Opto Isolated Keying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.4.8 Relay Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.4.9 Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.4.10 RSSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.4.11 Receiver Gate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.4.12 Receiver Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.5 Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.1 Personal Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.1.1 Lethal Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.1.2 Explosive Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.1.3 Proximity to RF Transmissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.1.4 High Temperatures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.2 Equipment Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.2.1 ESD Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.2.2 Antenna Load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.2.3 Equipment Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.2.4 Installation and Servicing Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.3 Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.3.1 Distress Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.3.2 FCC Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.3.3 Unauthorised Modifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.3.4 Health, Safety and Electromagnetic Compatibility in Europe. . . . . . . . 44

4.4 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.4.1 Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.4.2 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.4.3 Dust and Dirt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.5 Grounding and Lightning Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.5.1 Electrical Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.5.2 Lightning Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.6 Recommended Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.7 Ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.7.1 Cabinet and Rack Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.8 Installing the Base Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4.8.1 Unpacking the Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4.8.2 Identifying the Mechanical Configuration . . . . . . . . . . . . . . . . . . . . . 49

4.8.3 Power Supply Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.8.4 Setting the AC Mains Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.8.5 Mounting the Base Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.8.6 Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.8.7 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

5 Replacing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.1 Removing the Base Station and Opening the Tray. . . . . . . . . . . . . . . . . . . . . . . 54

5.2 Replacing the UI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5.3 Replacing the Receiver Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5.4 Replacing the Transmitter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

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5.5 Replacing the SI Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

5.6 Replacing the Transmitter and Receiver Fans . . . . . . . . . . . . . . . . . . . . . . . . . . 59

5.7 Replacing the Fan Power Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5.8 Replacing the Temperature Sensor Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5.9 Replacing the AC Power Supply Unit, Fan and Filter Module . . . . . . . . . . . . . .61

5.10 Replacing the Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5.11 Final Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

6 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

6.1 External Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

6.2 Internal Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

6.2.1 Transmitter and Receiver Connectors . . . . . . . . . . . . . . . . . . . . . . . . 71

6.2.2 SI Board Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

6.2.3 UI Board Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

7 Preparation for Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

7.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

7.2 Mode of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

7.3 Line-controlled Base. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

7.3.1 Test Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

7.3.2 Test Equipment Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

7.3.3 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

7.3.4 Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

7.3.5 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

7.3.6 Receiver Audio Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

7.3.7 Receiver Functional Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

7.3.8 Transmitter Audio Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 85

7.3.9 Transmitter Functional Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

7.4 Talk Through Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

7.4.1 Test Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

7.4.2 Test Equipment Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

7.4.3 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

7.4.4 Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

7.4.5 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

7.4.6 Audio Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

7.4.7 Talk Through Repeater Functional Testing . . . . . . . . . . . . . . . . . . . . 91

7.4.8 Alternate Talk Through Repeater Configuration . . . . . . . . . . . . . . . . 92

7.5 RF Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

7.5.1 Test Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

7.5.2 Test Equipment Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

7.5.3 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

7.5.4 Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

7.5.5 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

7.5.6 Audio Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

7.5.7 Programming for FFSK Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 96

7.5.8 Programming for THSD Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 98

7.5.9 Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

6TB7100 Installation and Operation Manual

7.6 Data Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

7.6.1 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

7.6.2 Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

7.6.3 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

7.6.4 Audio Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

7.6.5 Data Repeater Functional Testing . . . . . . . . . . . . . . . . . . . . . . . . . . 104

7.7 TaitNet Trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

7.8 Programmable Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

7.8.1 Connecting to the PC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

7.8.2 TB7100 Programming Application . . . . . . . . . . . . . . . . . . . . . . . . . 105

7.8.3 Mandatory Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

7.8.4 User-defined Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

7.8.5 Recommended Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

7.8.6 Function Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

7.9 Additional Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7.10 Adding Subaudible Signalling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7.10.1 Enabling Subaudible Signalling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7.10.2 Testing Subaudible Signalling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

7.10.3 Multiple Subaudible Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

7.11 Soft Off (Tx Tail Time) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

7.11.1 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

7.12 Tone On Idle (TOI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

7.12.1 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

7.13 Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

7.13.1 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

7.14 Channel ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

7.14.1 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

7.15 Relay Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

7.15.1 Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

7.16 Channel Increment and Decrement by Function Keys . . . . . . . . . . . . . . . . . . . 123

7.17 Carrier Wave Identification (CWID). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

7.17.1 Station ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

7.17.2 Station ID 2/Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

7.17.3 Tone Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

7.17.4 ID Repeat Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

7.17.5 Speed (Words per Minute) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

7.17.6 Wait Period after Loss of COR/COS/CTCSS Input Before IDing. . 124

7.17.7 Transmit Key-Up Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

7.17.8 Transmit Time Out Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

7.17.9 Transmit PTT Drop Out Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

7.17.10Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

8 Maintenance Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Directive 1999/5/EC Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . .141

TB7100 Installation and Operation Manual 7

Preface

Scope of Manual

Welcome to the TB7100 Installation and Operation Manual. This manual

provides information on installing and operating the TB7100 base station.

Also included in this manual are a high-level circuit description, a functional

description and a maintenance guide.

Enquiries and Comments

If you have any enquiries regarding this manual, or any comments,

suggestions and notifications of errors, please contact Technical Support

(refer to “Tait Contact Information” on page 2).

Updates of Manual and Equipment

In the interests of improving the performance, reliability or servicing of the

equipment, Tait Electronics Limited reserves the right to update the

equipment or this manual or both without prior notice.

All information contained in this manual is the property of

Tait Electronics Limited. All rights are reserved. This manual may not, in

whole or in part, be copied, photocopied, reproduced, translated, stored, or

reduced to any electronic medium or machine-readable form, without prior

written permission from Tait Electronics Limited.

Disclaimer

There are no warranties extended or granted by this manual.

Tait Electronics Limited accepts no responsibility for damage arising from

use of the information contained in the manual or of the equipment and

software it describes. It is the responsibility of the user to ensure that use of

such information, equipment and software complies with the laws, rules and

regulations of the applicable jurisdictions.

8TB7100 Installation and Operation Manual

Document Conventions

“File > Open” means “click File on the menu bar, then click Open on the

list of commands that pops up”. “Channel Setup > Channels > Detailed”

means “in the navigation pane find the Channel Setup group, and select

Channels from it, on the Channels page select the Detailed tab”.

Within this manual, four types of alerts are given to the reader: Warning,

Caution, Important and Note. The following paragraphs illustrate each type

of alert and its associated symbol.

Warning!! This alert is used when there is a potential risk

of death or serious injury.

Caution This alert is used when there is a risk of minor or

moderate injury to people.

Important This alert is used to warn about the risk of equipment dam-

age or malfunction.

Note This alert is used to highlight information that is required to

ensure procedures are performed correctly.

Associated Documentation

The following associated documentation is available for this product:

■MBB-00002-xx TB7100 Specifications Manual

■MBB-00003-xx TB7100 Installation Guide

■MBB-00005-xx TB7100 Service Manual

■MBA-00013-xx TBA0STU/TBA0STP Calibration and Test Unit

Operation Manual

The characters xx represent the issue number of the documentation.

All available documentation is provided on the CD (406-00047-xx)

supplied with the base station. Updates may also be published on the Tait

support website.

Technical notes are published from time to time to describe applications for

Tait products, to provide technical details not included in manuals, and to

offer solutions for any problems that arise.

TB7100 Installation and Operation Manual 9

Publication Record

Issue Publication Date Description

1 May 2005 First release

2 December 2005 Internal AC power supply, A4 and D1 bands

added.

10 TB7100 Installation and Operation Manual

TB7100 Installation and Operation Manual Introduction 11

1Introduction

The TB7100 is a software and hardware link-configured base station which

is designed for operation in a large variety of standard frequency ranges.

It makes extensive use of digital and DSP technology. Many operating

parameters such as channel spacing, audio bandwidth and signalling are

controlled by software.

This manual includes the information required for installing and operating

the base station.

This section describes the different options available for:

■frequency bands

■RF output power

■power supply

■mechanical configurations

■product codes

For specifications, refer to the specifications manual or the area on the

TaitWorld website reserved for TB7100 products.

Figure 1.1 TB7100 base stations

Configuration with provision for internal AC power supply*

Configuration without provision for internal AC power supply* *cover removed

12 Introduction TB7100 Installation and Operation Manual

1.1 Frequency Bands

The base station is available in the following frequency bands:

■66 to 88MHz (A4)

■136 to 174MHz (B1)

■216 to 266 MHz (D1)

■400 to 470MHz (H5)

■450 to 530MHz (H6)

■450 to 520MHz (H7)

The RF band of the base station is implemented by the frequency band of

the transmitter and receiver modules.

1.2 RF Output Power

The base station is available with 25W and 50W/40W RF output power.

The RF output power options are implemented by different transmitter and

receiver modules.

The 25W base station is available in the following frequency bands:

■A4

■B1

■D1

■H5

■H6

The 50W/40W base station is available in the following frequency bands:

■B1 (50W)

■H5 (40W)

■H7 (40W)

TB7100 Installation and Operation Manual Introduction 13

1.3 Power Supply Options

The base station is available with or without an internal AC power supply.

All base stations have an external DC input power connector which is used

as main power supply when no internal AC power supply is fitted.

When the internal AC power supply is fitted, the DC input can be used as

a DC backup power option. In case of AC mains failure the base station will

automatically and seamlessly switch to DC power input.

If no internal AC power supply is fitted, an external Tait T809-10-87xx

power supply can be used to supply the DC voltage required.

Warning!! The internal AC power supply unit contains

voltages that may be lethal. Refer to the ratings

label on the rear of the base station. The internal

AC power supply contains no user-servicable

parts.

Important Wrong mains voltage! Before connecting to the AC power

connector, ensure that the internal 115V/230V voltage

mains selector switch is set to the correct mains voltage.

1.4 Mechanical Configurations

The base station is available in two different mechanical configurations—

with or without provision for an internal AC power supply unit.

The mechanical configuration with provision for an internal AC power

supply has the following distinguishing features:

■larger air intake on the right-hand side of the front panel

■provision for AC connector on the left-hand side of the rear panel (refer

to Figure 1.1 on page 11)

■ground point on the right-hand side of the rear panel rather than on the

left-hand side

■different SI board and internal cables.

The mechanical configuration without provision for an internal AC power

supply unit cannot be upgraded with an internal AC power supply unit.

The product codes of the base station (see below) do not distinguish

between the mechanical configurations.

14 Introduction TB7100 Installation and Operation Manual

1.5 Product Codes

This section describes the product codes used to identify products of the

TB7100 base station product line.

The product codes of the TB7100 base station product line has the format:

TBBaabb-cde-ff

where:

■aa identifies the frequency band of the receiver:

A4=66 to 88MHz, B1=136 to 174MHz, D1=216 to 266 MHz,

H5=400 to 470MHz, H6=450 to 530MHz, H7=450 to 520MHz

■bb identifies the frequency band of the transmitter:

A4=66 to 88MHz, B1=136 to 174MHz, D1=216 to 266 MHz,

H5=400 to 470MHz, H6=450 to 530MHz, H7=450 to 520MHz

■c identifies the RF output power and digital architecture:

A=25W, level-1 digital architecture

B=35W to 50W, level-1 digital architecture

C=25W, level-2 digital architecture

D=35W to 50W, level-2 digital architecture

E=25W, level-3 digital architecture

F=35W to 50W, level-3 digital architecture

■d identifies the power supply option:

0=DC only

1=internal AC power supply unit, factory preset to 115VAC

2=internal AC power supply unit, factory preset to 230VAC

■e identifies the AC power cable:

1 = Australia/New Zealand

2 = United Kingdom

3 = Europe

4 = USA

■ff identifies base station options:

00=no options

TB7100 Installation and Operation Manual Mechanical Description 15

2 Mechanical Description

Overview The base station consists of the following main modules:

■tray b

■UI board (user interface) d

■receiver module h

■transmitter module i

■SI board (system interface) 1)

■internal AC power supply unit 1@ (if fitted).

All modules and boards are mounted from above into the 1U tray b.

The modules are secured by screws or clips into standoffs on the tray chassis,

and are easily removed for replacement.

The base station includes two cooling fans f and a fan duct e in front of

the receiver and transmitter modules, a speaker c mounted behind the front

panel, a fan power board g mounted on the fan duct, and a temperature

sensor board j mounted on the heatsink of the transmitter module i.

If the internal AC power supply unit 1@ is fitted, the base station includes an

additional fan 1# and an AC filter module 1!.

The modules and components are interconnected by looms and cables.

Figure 2.1 Parts of the base station (configuration with internal AC power supply unit shown)

16 Mechanical Description TB7100 Installation and Operation Manual

2.1 Tray

The 1U tray consists of a mild steel folded chassis and a flat cover (not

shown) which is fastened to the chassis with 15 Torx T10 screws. The tray

can be fitted into a standard 19 inch rack or cabinet using the two rack

mounting brackets.

The front panel has holes to accommodate the controls and the

microphone/programming connector of the UI board.

The rear panel has holes to accommodate the connectors and the fuse holder

of the SI board, the antenna connectors, and a ground terminal.

For more information on the connections, refer to “Connections” on

page 65.

2.2 UI Board

The UI board is mounted behind the front panel with three Torx T10

screws c and two spring clips D. The UI board is connected to the

transmitter and receiver modules via the two Micro-MaTch connectors e

and the two UI cables (not shown). The UI board also has a speaker

connector b.

A volume knob is fitted to the shaft of the volume-control potentiometer.

Figure 2.2 UI board

Cables not shown.

TB7100 Installation and Operation Manual Mechanical Description 17

2.3 Receiver Module

The receiver module is mounted in the front left of the tray with five Torx

T10 screws g.

The receiver module is a printed circuit board in SMT design with

components on the top and bottom sides. A digital board is reflow-soldered

to the receiver. Most components are shielded by metal cans.

There are different boards for each frequency band and each RF output

power configuration.

The RF b, DC power c, auxiliary d, and user interface f connectors are

located on the bottom side of the board. The internal options connector e

and a factory connector (not shown) for factory use are located on the top

side of the board.

For compliance reasons, there are different variants of the receiver module

for use in the 25W and 50W/40W base stations. The 25W version has a

white DC power connector C and the 50W/40W version has a black DC

power connector.

For more information on the connectors, refer to “Connections” on

page 65.

Figure 2.3 Receiver module

bcd

18 Mechanical Description TB7100 Installation and Operation Manual

2.4 Transmitter Module

The transmitter module consisting of a transmitter board f mounted on a

purpose-designed heatsink 1) is mounted in the left rear of the tray with

four Torx T10 screws (not shown).

The transmitter board is a printed circuit board in SMT design with

components on the top and bottom sides. A digital board is reflow-soldered

to the board. Most components are shielded by metal cans. There are

different boards for each frequency band and each RF output power

configuration.

The RF b, DC power c, auxiliary d, and user interface f connectors are

located on the bottom side of the board. The internal options connector e

and a factory connector (not shown) for factory use are located on the top

side of the board.

The 50W/40W version has a black DC power connector C and the 25W

version has a white DC power connector. For more information on the

connectors, refer to “Connections” on page 65.

The board f is mounted to the heatsink 1) with seven Torx T10 screws

fand g.

An L-shaped gap pad i and (with the 50W/40W version) a rectangular gap

pad j are fitted between the board f and the heatsink 1) to improve heat

transfer.

Figure 2.4 Transmitter module

TB7100 Installation and Operation Manual Mechanical Description 19

2.5 SI Board

The SI board is mounted in the rear right of the tray with two Torx T10

screws 1), one Pozidriv screw j, and two spring clips 1!.

The SI board has the following external connectors:

■13.8V DC power connector (labelled 12V DC) b

■system connector (labelled SYSTEM) c

■serial data connector (labelled IOIOI) D.

The SI board has the following internal connectors:

■two system interface connectors e (to transmitter and receiver)

■one DC input connector h, if fitted (from internal AC power supply)

■one DC output connector i (to transmitter and receiver)

■fan control connector f (to fan power board on fan duct)

■temperature control connector g (to temperature sensor on transmitter

heatsink).

For more information on the connectors, refer to “Connections” on

page 65.

Figure 2.5 SI board

bc d

1) 1)

1!1! ef

20 Mechanical Description TB7100 Installation and Operation Manual

2.6 AC Power Supply Unit

The base station may be fitted with an internal AC power supply unit f, an

AC filter module d, and an additional fan g.

The AC filter module has a standard AC connector that fits into a provision

on the rear of the tray. The AC filter module slides into securing tabs on the

tray floor and is held in place by the AC power supply unit.

Note Mechanical configurations without the provision for a standard

AC connector cannot be upgraded with the internal AC power

supply unit.

The AC power supply unit is held in place by two screws e. The fan is

attached to the AC power supply unit by two screws h.

The AC power supply unit is connected to the AC filter module via a cable

connector (not shown).

The DC output of the AC power supply unit is connected to the SI board

b. The AC power supply unit also has a cable to provide a mains failure

signal to the SI board c. In case of a mains failure, this signal will cause the

power circuitry on the SI board to switch to DC external input.

Figure 2.6 AC power supply unit, filter module and fan

e dfe

TB7100 Installation and Operation Manual Functional Description 21

3 Functional Description

This section describes some principles of the base station operation.

Figure 3.1 shows the high-level block diagram of the base station.

Figure 3.1 Base station high-level block diagram

DC Input

Connector System

Connector Serial Data

Connector AC Input

Connector

Tx/Ant

Connector

Ground

Point

Transmitter

Module

Receiver

Module

UI Board

Power Supply

Unit

Fan

FanFan

Fan Power

Board

Speaker

Temperature

Sensor

Prog/Mic

Connector

Receiver/SI

Internal power

Transmitter/SI

Internal power

UI/Receiver

Internal power

UI/Transmitter

Internal power

AC Input Filter

Module

115V/230V

Selector

Switch

SI Board

Fuse

Mains fail signal

22 Functional Description TB7100 Installation and Operation Manual

The block diagram illustrates the main inputs and outputs for power, RF

and control signals, as well as the interconnection between modules:

■program data and audio from the PROG/MIC socket on the UI board to and

from the transmitter and receiver modules

■audio and signalling from the SYSTEM connector to and from the

transmitter and receiver modules

■RS-232 data from the serial data connector (IOIOI) to and from the

transmitter and receiver modules

■fan power and control from the SI board

■power distribution from the AC and DC power input connectors to the

transmitter and receiver modules, and from the receiver module to the

UI board.

The circuitry of the individual modules that make up the base station is

described in more detail in the following sections.

Frequency Bands

and Sub-bands The circuitry of the transmitter and receiver modules is similar for all

frequency bands and is therefore covered by a single description in this

manual. Where the circuitry differs between bands, separate descriptions are

provided for each frequency band. For more information on frequency

bands, refer to the specifications manual.

RS-232 Signals External data communications all occur directly between the connected

computer (or other electrical equipment) and the transmitter and receiver

modules over the RS-232 serial lines.

Fan Signals The power and ground signals for the fans are routed from the SI board to

the fans behind the front panel. These signals are electrically isolated from

all other system signals to ensure fan noise is not transferred to other sensitive

system components.

If there is a fault in the fan circuitry, the transmitter module is protected from

overheating by its internal foldback circuitry.

Speaker Signal Received audio is sent from the receiver module to the UI board.

The volume is controlled by the volume potentiometer on the UI board.

The audio signal is routed through the UI board to the speaker for

monitoring purposes.

Power and Ground The SI board provides power to the transmitter and receiver modules.

The receiver modules provides power to the UI board.

TB7100 Installation and Operation Manual Functional Description 23

3.1 Receiver Operation

Parts of Receiver

Board The main circuit parts of the receiver modules are:

■receiver

■frequency synthesizer

■CODEC (coder-decoder) and audio circuitry

■power supply

■interface circuitry

Software plays a prominent role in the functioning of the radio.

When describing the operation of the radio the software must be included

with the above. This is considered further below.

These functional parts are described in detail below.

3.1.1 RF Hardware

Front End Circuitry

and First IF The front-end hardware amplifies and image filters the received RF

spectrum, then down-converts the desired channel frequency to a first

intermediate frequency IF1 of 45.1MHz (UHF) or 21.4MHz (VHF) where

coarse channel filtering is performed. The first LO (local oscillator) signal is

obtained from the frequency synthesizer and is injected on the low side of

the desired channel frequency for all bands except A4. When receiving the

modulation to the frequency synthesizer is muted. The output of the first IF

(intermediate frequency) stage is then down-converted using an image-

reject mixer to a low IF of 64kHz.

Figure 3.2 Receiver high-level block diagram

IF:

UHF: 45.1 MHz

VHF: 21.4 MHz

Digital

down-

converter

Squelch

Front

end

1st

Channel

LPF

Channel

LPF

RSSI

Second LO

UHF: 90.328 MHz

VHF: 42.928 MHz

Demod

Quad

Demod

AGC

Analogue-to-digital conversion

2nd IF:

64 kHz

Audio

filtering

De-

emphasis

Optional

processing

Data and signalling

decoders

Side

tones

System Interface

or User Interface

Phase

locked to

TCXO

LPF

ANT

Mag.

PLL

Loop

filter

Loop

filter

Frequency

control

Triple-point

Equalisation

TCXO:

13.000 MHz

VCO

VCXO

CUSTOM-

LOGIC

BLOCK

HARDWARE BLOCK

Digital-to-analogue conversion

KEY

NOTES

(1) Noise blanker not shown

DSP

BLOCK

24 Functional Description TB7100 Installation and Operation Manual

Quadrature

Demodulator The LO for the image-reject mixer (quadrature demodulator) is synthesized

and uses the TCXO (temperature-compensated crystal oscillator) as a

reference. This ensures good centring of the IF filters and more consistent

group-delay performance. The quadrature demodulator device has an

internal frequency division of 2 so the second LO operates at

2x(IF1 + 64kHz). The quadrature output from this mixer is fed to a pair

of ADCs (analog-to-digital converters) with high dynamic range where it is

oversampled at 256kHz and fed to the custom logic device.

Automatic Gain

Control The AGC (automatic gain control) is used to limit the maximum signal level

applied to the image-reject mixer and ADCs in order to meet the

requirements for intermodulation and selectivity performance. Hardware

gain control is performed by a variable-gain amplifier within the quadrature

demodulator device driven by a 10-bit DAC (digital-to-analog converter).

Information about the signal level is obtained from the IQ (in-phase and

quadrature) data output stream from the ADCs. The control loop is

completed within custom logic. The AGC will begin to reduce gain when

the combined signal power of the wanted signal and first adjacent channels

is greater than about –70dBm. In the presence of a strong adjacent-channel

signal it is therefore possible that the AGC may start acting when the wanted

signal is well below –70dBm.

3.1.2 Digital Baseband Processing

Custom Logic The remainder of the receiver processing up to demodulation is performed

by custom logic. The digitised quadrature signal from the RF hardware is

digitally down-converted to a zero IF, and channel filtering is performed at

base-band. Different filter shapes are possible to accommodate the various

channel spacings and data requirements. These filters provide the bulk of

adjacent channel selectivity for narrow-band operation. The filters have

linear phase response so that good group-delay performance for data is

achieved. The filters also decimate the sample rate down to 48kHz. Custom

logic also performs demodulation, which is multiplexed along with AGC

and amplitude data, and fed via a single synchronous serial port to the DSP.

The stream is demultiplexed and the demodulation data used as an input for

further audio processing.

Noise Squelch The noise squelch process resides in the DSP. The noise content above and

adjacent to the voice band is measured and compared with a preset

threshold. When a wanted signal is present, out-of-band noise content is

reduced and, if below the preset threshold, is indicated as a valid wanted

signal.

Received Signal

Strength Indication Received signal strength is measured by a process resident in the DSP.

This process obtains its input from the demodulator (value of RF signal

magnitude) and from the AGC (value of present gain). With these two

inputs and a calibration factor, the RF signal strength at the antenna can be

accurately calculated.

TB7100 Installation and Operation Manual Functional Description 25

Calibration The following items within the receiver path are calibrated in the Factory:

■front-end tuning

■AGC

■noise squelch

■RSSI (received signal strength indication)

Information on the calibration of these items is given in the on-line help

facility of the calibration application.

3.1.3 Audio Processing and Signalling

Audio Processing Raw demodulated data from the receiver is processed within the DSP. The

sample rate at this point is 48kHz with signal bandwidth limited only by the

IF filtering. Scaling (dependent on the bandwidth of the RF channel) is then

applied to normalise the signal level for the remaining audio processing.

The sample rate is decimated to 8kHz and bandpass audio filtering (0.3 to

3kHz) is applied. The base station takes the audio from the receiver mode

at Tap R4 by default; this point has no de-emphasis. This tap point can be

changed if required, for example, for trunking applications.

Data and Signalling

Decoders The data and signalling decoders obtain their signals from various points

within the audio processing chain. The point used depends on the

bandwidth of the decoders and whether de-emphasis is required. Several

decoders may be active simultaneously.

Side Tones Side tones are summed in at the end of the audio-processing chain.

These are tones that provide some form of alert or give the user confidence

an action has been performed. The confidence tones may be generated in

the receiver. The side-tone level is a fixed proportion (in the order of

–10dB) relative to full scale in the receive path. By default, all audible

indicators are turned off.

CODEC The combined audio and side-tone signal is converted to analog form by a

16-bit DAC with integral anti-alias filtering. This is followed by a

programmable-gain amplifier with a range of 45dB in 1.5dB steps.

The amplifier performs muting. The DAC is part of the same CODEC

device (AD6521).

Output to Speakers The output of the CODEC is fed to an audio power amplifier and to the

UI board via a buffer amplifier. The output configuration of the audio

power amplifier is balanced and drives an internal speaker. The power

delivered to the speaker is limited by its impedance. The speaker has 16Ω

impedance.

26 Functional Description TB7100 Installation and Operation Manual

3.2 Transmitter Operation

Parts of Transmitter

Board The main circuit parts of the transmitter board are:

■transmitter

■frequency synthesizer

■CODEC (coder-decoder) and audio circuitry

■power supply

■interface circuitry

Software plays a prominent role in the functioning of the board.

When describing the operation of the radio the software must be included

with the above. This is considered further below.

These functional parts are described in detail below.

3.2.1 Audio Processing and Signalling

Microphone Input The input to the transmitter path begins at either the SI board or the

PROG/MIC connector of the UI board. Only electret-type microphones are

supported. The audio input is then applied to tap point T8 on the

transmitter board (the tap point is user-selectable).

Analog Processing

of Microphone

Signal

The CODEC (AD6521) performs microphone selection and amplification.

The microphone amplifier consists of an amplifier with a fixed gain of 16dB

followed by a programmable-gain amplifier with 0dB to 22dB gain.

The amplified microphone signal is converted to a digital stream by a 16-bit

ADC with integral anti-alias filtering (0.1 to 3.2kHz). The digital stream is

transported to the DSP for further audio processing.

Figure 3.3 Transmitter high-level block diagram

Analog-to-digital conversion

LPF

ANT

PLL

Loop

filter

Loop

filter

Frequency

control

Triple-point

Equalisation

Audio

filtering

Pre-

emphasis

Optional

processing

Data and signalling

encoders

ALC Mic

PGA

Dir.

Coup. Fin Drv

/Ex

Pwr

Crtl

Ramp

control

TCXO:

13.000 MHz

VCO

VCXO

Bias

CUSTOM

LOGIC

BLOCK

HARDWARE

BLOCK

HARDWARE BLOCK

Digital-to-analog conversion

KEY

PROG/MIC connector

DSP

BLOCK

SYSTEM connector

Tap point T8

TB7100 Installation and Operation Manual Functional Description 27

Automatic Level

Control The ALC (automatic level control) follows, and is used to effectively increase

dynamic range by boosting the gain of the microphone pre-amplifier under

quiet conditions and reducing the gain under noisy acoustic conditions.

The ALC function resides in the DSP and controls the microphone

programmable-gain amplifier in the CODEC. The ALC has a fast-attack

(about 10ms) and slow-decay (up to 2s) characteristic. This characteristic

ensures that the peak signal level is regulated near full scale to maximise

dynamic range.

DSP Audio

Processing The output of the automatic level control provides the input to the DSP

audio-processing chain at a sample rate of 8kHz. Optional processing such

as encryption or companding is done first if applicable. Pre-emphasis, if

required, is then applied. The pre-emphasised signal is hard limited to

prevent over deviation, and filtered to remove high-frequency components.

The sample rate is then interpolated up to 48kHz and scaled to be suitable

for the frequency synthesizer.

Data and Signalling

Encoders The data and signalling encoders inject their signals into various points

within the audio-processing chain. The injection point depends on the

bandwidth of the encoders and whether pre-emphasis is required.

3.2.2 Frequency Synthesizer

Main Parts of

Synthesizer The frequency synthesizer consists of two main parts:

■FCL (frequency control loop)

■RF PLL (phase-locked loop)

The FCL and RF PLL are described briefly below. Note that patents are

pending for several aspects of the synthesizer design.

Frequency Control

Loop The FCL consists of the following:

■TCXO

■mixer

■loop filter

■VCXO (voltage-controlled crystal oscillator)

■frequency control block

The FCL provides the reference frequency for the RF PLL. It generates a

high-stability reference frequency that can be both modulated and offset in

fine resolution steps.

28 Functional Description TB7100 Installation and Operation Manual

RF PLL The RF PLL consists of the following:

■RF PLL device

■loop filter

■VCO (voltage-controlled oscillator)

■VCO output switch

The RF PLL has fast-locking capability but coarse frequency resolution.

The above combination of control loops creates improved frequency

generation and acquisition capabilities.

Operation of

Control Loop The RF PLL is a conventional integer-N design with frequency resolution

of 25kHz. In transmit mode the loop locks to the transmit frequency.

Initially, the VCO generates an unregulated frequency in the required range.

This is fed to the PLL device (ADF4111) and divided down by a

programmed ratio to approximately 25kHz. The reference frequency input

from the FCL is also divided down to approximately 25kHz. The phase of

the two signals is compared and the error translated into a DC voltage by a

programmable charge pump and dual-bandwidth loop filter. This DC signal

is used to control the VCO frequency and reduce the initial error. The loop

eventually settles to a point that minimises the phase error between divided-

down reference and VCO frequencies. The net result is that the loop locks

to a programmed multiple of the reference frequency.

The FCL generates an output of 13.012±0.004MHz. Initially a VCXO

produces a quasi-regulated frequency in the required range. The VCXO

output is fed to a mixer where it is mixed with the 13.000MHz TCXO

frequency. The mixer, after low-pass filtering to remove unwanted products,

produces a nominal frequency of 12kHz. This is converted to digital form

and transported to the frequency-control block in custom logic.

The frequency-control block compares the mixer output frequency with a

reference generated by the digital clock and creates a DC error signal. A

programmed offset is also added. This error signal is converted to analog

form and used to control the VCXO frequency and reduce the initial error.

Once settled, the loop locks to the TCXO frequency with a programmed

offset frequency. The FCL output therefore acquires the TCXO’s frequency

stability.

Modulation The full bandwidth modulation signal is obtained from the DSP in digital

form at a sample rate of 48kHz. In traditional dual-point modulation

systems the modulation is applied, in analog form, to both the frequency

reference and the VCO in the RF PLL, combining to produce a flat

modulation response down to DC. Reference modulation is usually applied

directly to the TCXO.

TB7100 Installation and Operation Manual Functional Description 29

In the system employed in the transmitter board, the frequency reference is

generated by the FCL, which itself requires dual-point modulation injection

to allow modulation down to DC. With another modulation point required

in the RF PLL, this system therefore requires triple-point modulation.

The modulation signals applied to the FCL are in digital form, whereas for

the RF PLL (VCO) the modulation signal is applied in analog form.

The modulation cross-over points occur at approximately 30 and 300Hz as

determined by the closed loop bandwidths of the FCL and RF PLL

respectively.

Frequency

Generation The RF PLL has a frequency resolution of 25kHz. Higher resolution cannot

be achieved owing to acquisition-time requirements and so for any given

frequency the error could be as high as ±12.5kHz. This error is corrected

by altering the reference frequency to the RF PLL. The FCL supplies the

reference frequency and is able to adjust it up to ±300ppm with better than

0.1ppm resolution (equivalent to better than 50Hz resolution at the RF

frequency).

Fast Frequency

Settling Both the FCL and RF PLL employ frequency-acquisition speed-up

techniques to achieve fast frequency settling. The frequency-acquisition

process of the FCL and RF PLL is able to occur concurrently with minimal

loop interaction owing to the very large difference in frequency step size

between the loops.

Frequency

Acquisition

of RF PLL

In the RF PLL the loop bandwidth is initially set high by increasing the

charge pump current and reducing time constants in the loop filter. As a

result settling to within 1kHz of the final value occurs in under 4ms. In

order to meet noise performance requirements the loop parameters are then

switched to reduce the loop bandwidth. There is a small frequency kick as

the loop bandwidth is reduced. Total settling time is under 4.5ms.

Frequency

Acquisition

of FCL

The FCL utilises self-calibration techniques that enable it to rapidly settle

close to the final value while the loop is open. The loop is then closed and

settling to the final value occurs with an associated reduction in noise.

The total settling time is typically less than 4 ms.

Calibration The following items are calibrated in the frequency synthesizer:

■nominal frequency

■KVCO

■KVCXO

■VCO deviation

Calibration of the nominal frequency is achieved by adding a fixed offset to

the FCL nominal frequency; the TCXO frequency itself is not adjusted.

The items KVCO and KVCXO are the control sensitivities of the RF VCO

(in MHz/V) and VCXO (in kHz/V) respectively. The latter has temperature

compensation.

30 Functional Description TB7100 Installation and Operation Manual

3.2.3 RF Power Amplifier

RF Power Amplifier

and Switching

(50W/40W Version)

The RF power amplifier and exciter of the 50W/40W radio is a five-stage

line-up with approximately 40dB of power gain. The output of the

frequency synthesizer is first buffered to reduce kick during power ramping.

The buffer output goes to a discrete exciter that produces approximately 300

to 400mW output. This is followed by an LDMOS driver producing up to

8W output that is power-controlled. The final stage consists of two parallel

LDMOS devices producing enough power to provide 40 to 50W at the RF

connector.

RF Power Amplifier

and Switching

(25W Version)

The RF power amplifier of the 25W version is a four-stage line-up with

approximately 37dB of power gain. The output of the frequency synthesizer

is first buffered to reduce kick during power ramping. The buffer output

goes to a broad-band exciter IC that produces approximately 200mW

output. This is followed by an LDMOS driver producing up to 2W output

that is power-controlled. The final stage consists of two parallel LDMOS

devices producing enough power to provide 25W at the RF connector.

Output of RF

Power Amplifier The output of the RF PA passes through a dual-directional coupler, used for

power control and monitoring. Finally, the output is low-pass-filtered to

bring harmonic levels within specification.

Power Control The steady-state power output of the transmitter is regulated using a

hardware control loop. The forward power output from the RF PA is sensed

by the directional coupler and fed back to the power control loop. The PA

output power is controlled by varying the driver gate bias voltage that has a

calibrated maximum limit to prevent overdrive. The power control signal is

supplied by a 13-bit DAC driven by custom logic.

Ramping Power ramp-up consists of two stages:

■bias

■power ramping

The timing between these two stages is critical to achieving the correct

overall wave shape in order to meet the specification for transient ACP

(adjacent channel power). A typical ramping waveform is shown in

Figure 3.4.

TB7100 Installation and Operation Manual Functional Description 31

Bias Ramp-up The steady-state final-stage bias level is supplied by an 8-bit DAC

programmed prior to ramp-up but held to zero by a switch on the DAC

output under the control of a TX INHIBIT signal. Bias ramp-up begins upon

release by the TX INHIBIT signal with the ramping shape being determined by

a low-pass filter. Owing to power leakage through the PA chain, ramping

the bias takes the PA output power from less than –20dBm for the

50W/40W version or –10dBm for the 25W version to approximately

25dB below steady-state power.

Power Ramp-up The power ramp signal is supplied by a 13-bit DAC that is controlled by

custom logic. The ramp is generated using a look-up table in custom logic

memory that is played back at the correct rate to the DAC to produce the

desired waveform. The ramp-up and ramp-down waveforms are produced

by playing back the look-up table in forward and reverse order respectively.

For a given power level the look-up table values are scaled by a steady-state

power constant so that the ramp waveform shape remains the same for all

power levels.

Figure 3.4 Typical ramping waveforms

Power

ramp

High power

powerLow

Power

Time

Bias

ramp

Bias

ramp Power

ramp

32 Functional Description TB7100 Installation and Operation Manual

3.3 User Interface Operation

This section describes the programming/microphone connector and the

controls of the user interface, and the function of the UI board.

Figure 3.5 shows the controls and indicators of the user interface.

Programming/

Microphone

Connector

The PROG/MIC connector can be used to connect a handset or a programming

cable.

TX/RX Switch The TX/RX switch changes the LCD display to show either the transmitter or

the receiver channel. The TX/RX switch also determines which board will be

programmed by the programming or calibration applications.

The programming application is a program on a PC that is connected to the

base station via the PROG/MIC connector. The programming application

enables the user to program the base station with the required channels and

subaudible signalling settings. The transmitter and receiver modules are

programmed individually according to the setting of the TX/RX switch.

The calibration application is a program on a PC that is connected to the

base station via the PROG/MIC connector. The transmitter and receiver

modules are designed to be totally electronically tuned. No physical tuning

is required, as all tuning is done by electronic trimming. The calibration

application can assist in the tuning of:

■AD6521 CODEC voltage reference

■TCXO frequency

■receiver front end

■transmitter driver and final gate bias limit

■transmitter power control

■deviation and squelch.

Figure 3.5 User interface

volume controlfunction keys and LEDs

internal speaker

status LEDs

2-digit LCD

display

Tx/Rx

switch

programming/

microphone

connector

TB7100 Installation and Operation Manual Functional Description 33

Function Keys Pressing the function keys will activate the functions assigned using the

programming application. Function keys may have functions assigned to

both short and long key presses. A short key press is less than one second,

and a long key press is more than one second.

Volume Control and

Internal Speaker Rotate the volume control potentiometer clockwise to increase the speaker

volume and counterclockwise to decrease the volume. By default, the base

station is programmed not to generate any audible indicators.

UI Board The UI board is connected to the receiver and transmitter modules via

separate 18-way ribbon cables. The internal speaker is connected to the

UI board via a cable with a mating connector for easy disconnection.

If an internal AC Power supply is fitted, a fan power signal is routed from

the fan power board to the fan via the UI board. For more information on

the connectors and their signals, refer to “UI Board Connectors” on

page 75.

Figure 3.6 on page 34 shows a block diagram of the UI board.

The UI board does not include a microprocessor. A synchronous bi-

directional serial interface provides communication of key status, LCD and

LED-indicator data between the transmitter/receiver modules and the UI

board. The serial data is converted to or from a parallel form by a number

of shift registers for the function keys and indicators. For the LCD, the serial

data is fed to a driver IC that converts the serial data to a form suitable for

the LCD. The keys are scanned and the LCD and LED indicators updated

approximately every 50ms. The TX/RX switch controls what is displayed on

the LCD and also whether the transmitter module or the receiver module

will be programmed.

34 Functional Description TB7100 Installation and Operation Manual

Figure 3.6 UI board block diagram

Receiver

Module

+13V8

+3V3

SpeakerAudio

Volume Level (DC)

Rx SPI Data

Rx Prog Data

Receiver

SPI Shift

Registers

+13V8

+3V3

Transmitter

SPI Shift

Registers

Transmitter

Module Electronic

Switching

Rx SPI Data

Rx Prog Data

Speaker

Function

Keys and

LEDs

Volume

Control

Power

LED

Busy

LED

LCD

Tx/Rx

Switch

Prog/Mic

Connector

Fan

Connector

+13V8

PTT

MicAudio

Fan Power

Board

Fan Power

+3V3

UI Board

TB7100 Installation and Operation Manual Functional Description 35

3.4 System Interface Operation

This section describes the functioning of the system interface. The system

interface provides:

■internal power distribution

■internal AC/external DC switching

■serial data connection (THSD or FFSK)

■fan control

■general purpose IO

■receiver audio processing

■transmitter audio processing

■opto-isolated keying

■relay output

■received signal strength indication (RSSI)

■receiver gate output

■receiver inhibit input

■13.8VDC (1.5A) output

■tone on idle (TOI).

These functional parts are described in detail below.

36 Functional Description TB7100 Installation and Operation Manual

Figure 3.7 SI board block diagram

13.8V

4.5V

3.3V

13.8V out

Power Supplies

9V 4.5V

RXAUDIO OUT

RX LINE OUT

TX INAUDIO

TX LINE IN

TOITONE

AUD IN

13.8V

4.5V

3.3V

Audio

Control

and

Signalling

AUX IO

TX KEY

TX DATA

AUX IO

RX GATE

RSSI

RX DATA

AUD OUT

Transmitter

Module

Receiver

Module

Temperature

Sensor

Fan Power

Board

Fan Control

Serial Data

Connector

RXD

TXD

13.8V out

System

Connector

13.8V 3.3V

RSSI

RX GATE

DIG IO

OPTO

RELAY DRIVER

RX INHIBIT

TX KEY

TX DIG IO

RX DIG IO

DC Power

Connector

Mains fail signal

13.8V

AC Power

Supply Unit

Fuse

13.8V

AGND IN

SI Board

TB7100 Installation and Operation Manual Functional Description 37

3.4.1 Internal Power Distribution

This section details how the input power feed is distributed throughout the

base station to power its various sub-systems. Refer to Figure 3.8 for more

information.

13.8V DC This is from either the DC input on the rear of the base station, or from an

optional internal AC power supply unit. When AC mains is present, power

will not be drawn from the DC input. The DC power input of the base

station is protected by a rear panel fuse. The 13.8V is distributed directly to

Figure 3.8 Power distribution

Data

Circuitry

Control

Circuitry

Audio

Circuitry

CWID

Power

Supply

Circuitry

Fan Control

Circuitry

AC Power

Supply Unit Mains fail signal

Power

Source

13.8V

Fuse

DC Power

Connector

SI Board

Fan

Power

Board

Receiver

Module

4.5V

3.3V

13.8V Power

Supply

Circuitry

13.8V

3.3V

Frequency

Synthesizer

CODEC

andAudio

Receiver

Digital

Board

Interface

2.5V

Transmitter

Module

Power

Supply

Circuitry

13.8V

3.3V

Frequency

Synthesizer

CODEC

andAudio

Transmitter

Digital

Board

Interface

2.5V

Prog/Mic

Connector

UI Board

Power

Source

38 Functional Description TB7100 Installation and Operation Manual

the receiver and transmitter boards and to the 13.8VDC output on the

SYSTEM connector, rated at 1.5A. The 13.8VDC is also used to power the

fans, via control circuitry.

Note The UI board obtains 13.8V and 3.3V from the receiver module

and outputs 13V8_SW to the PROG/MIC connector.

3.3V, 4.5V, 9V, 13.8V The other voltages derived on the SI board are used only on the SI board.

3.4.2 Serial Data

THSD Tait High Speed Data (THSD) is a proprietary protocol of Tait Electronics

Limited that can be used with the base station. This allows the base station

configured in either data repeater or data modem modes to pass data speeds

up to 12kbps on a narrow-band channel and 19.2kbps on a wide-band

channel. 1200-baud Fast Frequency Shift Keyed (FFSK) data is also available

as an option.

3.4.3 General Purpose IO

The transmitter and receiver boards can be programmed to act upon signals

from the SI board and also outputs signals for certain conditions.

These settings are discussed in “Preparation for Operation” on page 77.

3.4.4 Receiver Audio Processing

The SI board provides an external 600Ω balanced 4-wire line for connecting

4-wire circuits of which two are used by the receiver for receive audio.

The SI board provides an unbalanced audio output for connecting to other

devices. Output levels can be set via the rear panel.

3.4.5 Tone On Idle

The tone-on-idle (TOI) frequency is generated by the SI board and fed

directly to the receiver line out. It is enabled using links on the SI board.

These settings are discussed in “Preparation for Operation” on page 77.

If enabled, the output of the TOI is switched by the receiver gate.

3.4.6 Transmitter Audio Processing

The SI board provides an external 600Ω balanced 4-wire line for connecting

4-wire circuits of which two are used by the transmitter for transmit audio.

TB7100 Installation and Operation Manual Functional Description 39

The SI board provides an unbalanced audio input and output for connecting

to other devices.

3.4.7 Opto Isolated Keying

External keying of the base station can be achieved using the current

regulated optically isolated keying connections.

3.4.8 Relay Output

The SI board can provide a relay output with a load voltage of 350V or load

current of 120mA continuous. The SI board can also provide a relay driver

output. Both these options are configurable and these settings are discussed

in “Preparation for Operation” on page 77.

3.4.9 Fan Control

There are three modes of operation for the fans. The modes are:

■on continuous

■on when transmitting

■on at a pre-defined temperature.

The modes of operation are selected by links on the SI board. These settings

are discussed in “Preparation for Operation” on page 77.

3.4.10 RSSI

A received signal strength indication (RSSI) voltage is developed by the

receiver module and applied directly to the SI board rear panel.

3.4.11 Receiver Gate

The receiver gate signal is used by the SI board to control TOI and a relay

output. The receiver gate output on the SYSTEM connector can be used for

external equipment such as TaitNet trunking controllers.

3.4.12 Receiver Inhibit

The receiver inhibit input on the SYSTEM connector is used to control the

receiver gate signal. This may be used in linking applications to prevent

unwanted receiver audio signals from appearing at the SI board output

connector.

40 Functional Description TB7100 Installation and Operation Manual

3.5 Fan Operation

The cooling fans are mounted behind the front panel. All fans in the chassis

must be of the same type.

Dissipation of Heat Heat needs to be dissipated from a number of components within the

internal AC power supply unit, transmitter and receiver modules, including

the following:

■9V regulator

■RF PA

■driver for RF PA

■audio PA

The mechanisms by which the heat is conducted away in each case are

described below.

Dissipation of Heat

from Transmitter The transmitter board is mounted directly onto a heatsink through which

the forced air from the fans is ducted.

Dissipation of Heat

from Regulator and

Audio PA

Heat from the audio PA and 9V regulator on the receiver board is conducted

away by a small aluminium heatsink and mounting boss. The heatsink and

boss contact the underside of the board where the components are mounted

and thermal paste ensures a good thermal transfer between the two surfaces.

Dissipation of Heat

from RF PAs and

Driver

Heat from the RF PAs and driver is conducted to the heatsink through a

copper separator plate. The copper plate is fixed to the underside of the

board and the components soldered directly to it. The copper plate is

mounted directly to the main heatsink boss and a coating of thermal paste

ensures good thermal transfer between these two surfaces.

Dissipation of Heat

from Internal AC

Power Supply Unit

Air is forced round major components within the internal AC power supply

unit to keep them cool. Some air is passed through a small heatsink to keep

the current-carrying semiconductor devices cool.

TB7100 Installation and Operation Manual Installation 41

4 Installation

This section describes how to install the base station in a standard 19-inch

rack or cabinet. It also provides some general information on safety

precautions and site requirements. We recommend that you read the entire

section before beginning the installation.

4.1 Personal Safety

4.1.1 Lethal Voltages

The base station may be fitted with an internal AC power supply unit. If an

internal AC power supply unit is fitted, a standard ICE AC power connector

is fitted in the rear panel of the base station (refer to “AC Power

Connection” on page 66).

Warning!! The internal AC power supply unit contains

voltages that may be lethal. Refer to the ratings

label on the rear of the base station. The internal

AC power supply contains no user-servicable

parts.

Important Wrong mains voltage! Before connecting to the AC power

connector, ensure that the internal 115V/230V voltage

mains selector switch is set to the correct mains voltage.

The voltage selector switch is located under the base station cover. (Refer to

“Setting the AC Mains Input Voltage” on page 50.)

The base station must be installed so that the rear of the base station is

located in a service access area. The internal AC power supply unit must be

connected to the mains supply source by trained personnel in accordance

with local and national regulations.

Ensure that all power sources (AC and DC) are disconnected

before opening the base station.

42 Installation TB7100 Installation and Operation Manual

4.1.2 Explosive Environments

Warning!! Do not operate base station equipment near

electrical blasting caps or in an explosive

atmosphere. Operating the equipment in these

environments is a definite safety hazard.

4.1.3 Proximity to RF Transmissions

Do not operate the transmitter when someone is standing within 90cm (3ft)

of the antenna. Do not operate the transmitter unless you have checked that

all RF connectors are secure.

4.1.4 High Temperatures

Take care when handling a base station which has been operating recently.

Under extreme operating conditions (+60°C [+140°F] ambient air

temperature) or high duty cycles the external surfaces of the base station can

reach temperatures of up to +80°C (+176°F).

4.2 Equipment Safety

4.2.1 ESD Precautions

Important This equipment contains devices which are susceptible to

damage from static charges. You must handle these devices

carefully and according to the procedures described in the

manufacturers’ data books.

We recommend you purchase an antistatic bench kit from a reputable

manufacturer and install and test it according to the manufacturer’s

instructions. Figure 4.1 shows a typical antistatic bench set-up.

You can obtain further information on antistatic precautions and the dangers

of electrostatic discharge (ESD) from standards such as ANSI/ESD

S20.20-1999 or BS EN 100015-4 1994.

TB7100 Installation and Operation Manual Installation 43

4.2.2 Antenna Load

The base station has been designed to operate safely under a wide range of

antenna loading conditions. However, damage will occur if the load is

removed while the base station is transmitting. Transmitting into a low

VSWR will maximise the power delivered to the antenna.

4.2.3 Equipment Grounding

To ensure safe operation, the base station must be correctly grounded as

described in these installation instructions.

4.2.4 Installation and Servicing Personnel

The base station should be installed and serviced only by qualified

personnel.

4.3 Regulatory Information

4.3.1 Distress Frequencies

The 406 to 406.1MHz frequency range is reserved worldwide for use by

Distress Beacons. Do not program transmitters to operate in this frequency

range.

Figure 4.1 Typical antistatic bench set-up

common point ground

(building ground or

mains ground via

1MΩ series resistor)

conductive wrist strap dissipative rubber

bench mat

44 Installation TB7100 Installation and Operation Manual

4.3.2 FCC Compliance1

This device complies with part 15 of the FCC Rules. Operation is subject

to the condition that this device does not cause harmful interference.

4.3.3 Unauthorised Modifications

Any modifications you make to this equipment which are not authorised by

Tait Electronics Ltd. may invalidate your compliance authority’s approval to

operate the equipment.

4.3.4 Health, Safety and Electromagnetic Compatibility in Europe

In the European Community, radio and telecommunications equipment is

regulated by Directive 1999/5/EC, also known as the Radio and

Telecommunications Terminal Equipment (R&TTE) directive.

The requirements of this directive include protection of health and safety of

users, as well as electromagnetic compatibility.

Intended Purpose of

Product This product is an FM radio transceiver. Its intended purpose is for radio

communication in Private Mobile Radio (PMR) services or Public Access

Mobile Radio (PAMR) services.

Important This product can be programmed for frequencies or emis-

sions that may make its use illegal. A license must be

obtained before this product is used. All license require-

ments must be observed. Limitations may apply to transmit-

ter power, operating frequency, channel spacing, and emis-

sion.

Declaration of

Conformity Brief Declarations of Conformity appear on page 141. You can download

the formal Declaration of Conformity from http://eudocs.taitworld.com/.

You can also obtain a signed and dated paper copy of the Declaration of

Conformity from Tait Europe Ltd.

1. Refer to the specifications manual for more information on the compliance standards to which

the base station has been tested and approved.

TB7100 Installation and Operation Manual Installation 45

4.4 Environmental Conditions

4.4.1 Operating Temperature Range

The operating temperature range is –30°C to +60°C (–22°F to +140°F)

ambient temperature for the 25W base station and –30°C to +50°C (–22°F

to +122°F) ambient temperature for the 50W and 40W base stations.

Ambient temperature is defined as the temperature of the air at the intake to

the cooling fans.

4.4.2 Humidity

The humidity should not exceed 95% relative humidity through the

specified operating temperature range.

4.4.3 Dust and Dirt

For uncontrolled environments, the level of airborne particulates must not

exceed 100µg/m3.

4.5 Grounding and Lightning Protection

4.5.1 Electrical Ground

The base station modules are grounded by physical contact between the

module mounting points and the chassis. To ensure a good ground

connection you must tighten each module securely (for the correct torque

refer to “Replacing Modules” in the installation and operation manual).

A threaded grounding connector is provided on the rear of the tray for

connection to the site ground point (for more details refer to “Connections”

on page 65).

4.5.2 Lightning Ground

It is extremely important for the security of the site and its equipment that

you take adequate precautions against lightning strike. Because it is outside

the scope of this manual to provide comprehensive information on this

subject, we recommend that you conform to your country's standards

organisation or regulatory body.

46 Installation TB7100 Installation and Operation Manual

4.6 Recommended Tools

It is beyond the scope of this manual to list every tool that an installation

technician should carry. However, the following tools are specifically

required for installing the base station:

■Philips #2 tip screwdriver used to connect the DC power cables to the

DC power terminals

■Pozidriv PZ3 screwdriver for the M6 screws used to secure the tray to

the cabinet in Tait factory-assembled systems

■Torx T10 screwdriver for the M3 pan head screws with captured shake-

proof washer and flat washer used to secure the modules in the tray

■Torx T10 screwdriver for the M3 countersunk screws used to secure the

cover and the heatsink channels to the tray

■Pozidriv PZ1 screwdriver for the M3 pan head self-tapping screws used

to secure the fans.

You can also obtain the TBA0ST2 tool kit from your nearest Tait dealer or

Customer Service Organisation. It contains the basic tools needed to install,

tune and service the base station.

4.7 Ventilation

Always ensure there is adequate ventilation around the base station. Do not

operate at high duty cycles in a sealed cabinet. You must keep the ambient

temperature within the specified range, and we strongly recommend you

ensure that the cooling airflow is not restricted.

Important The cooling fans are mounted behind the front panel.

To ensure adequate airflow through the base station, do not

operate it for more than a few minutes with the fans discon-

nected (e.g. for servicing purposes).

4.7.1 Cabinet and Rack Ventilation

Refer to Figure 4.2 on page 47.

Adequate cooling airflow is critical to the performance of the base station.

The cooling airflow for the base station enters through the front panel and

exits at the rear of the tray. For optimum thermal performance, the heated

air that has passed through a base station must not be allowed to re-enter the

air intakes on the front panel.

Each base station requires an unobstructed airflow of 18m3/h (11cfm).

To allow enough cooling airflow through a cabinet mounted base station

we recommend the following:

TB7100 Installation and Operation Manual Installation 47

Figure 4.2 Typical cabinet ventilation requirements

bventilation slots dairflow entry

cblanking panels eairflow exit

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

BUSY TF1 TF2 RF2

RF1 VOLUME

20cm

(8in)

≥10cm

(≥4in)

side view front view

top view

48 Installation TB7100 Installation and Operation Manual

■a distance of 5cm minimum clearance to any obstruction to the front of

the tray.

■an open area of at least 50cm2 (8in2) per tray of ventilation slots or

louvres in front of the air intakes for the fans for each tray; for example

ten 6×85mm (0.25×3.3in) slots will allow the recommended airflow.

■a distance of 10cm minimum clearance to any obstruction to the rear of

the tray.

■an open area of at least 50cm2 (8in2) per tray of ventilation slots or

louvres in the top of the cabinet, or to the rear of each tray.

■a 2U gap at the top of the cabinet.

Note The ventilation opening must be unrestricted. If the slots or holes

are covered with a filter, mesh or grille, the open area must be

increased to allow the same airflow as an unrestricted opening.

The maximum ambient temperature entering the cabinet must not exceed

the maximum temperature specified for the base station.

If the base station is installed in a rack or cabinet with other equipment with

different ventilation requirements, we recommend that the base station be

positioned below this equipment.

Auxiliary Extractor

Fans If multiple base stations are fitted in a cabinet, auxiliary extractor fans may

be required to ensure adequate cooling. If fitted they should be capable of

extracting 18m3/h (11cfm) per base station in the cabinet.

If you have any other configuration, the performance of your system will

depend on how closely you comply with the base station airflow

requirements described above.

TB7100 Installation and Operation Manual Installation 49

4.8 Installing the Base Station

4.8.1 Unpacking the Equipment

Unpacking the

Base Station The base station is packed in a strong corrugated cardboard carton with top

and bottom foam cushions.

1. Cut the tape securing the flaps at the top of the carton and fold them

flat against the sides.

2. Rotate the carton carefully onto its side and then onto its top,

ensuring that none of the flaps is trapped underneath.

3. Slide the carton upwards over the foam cushions and lift it away.

Remove the cushion from the bottom of the base station.

4. Lift the base station clear of the remaining cushion.

Disposal of

Packaging If you do not need to keep the packaging, we recommend that you recycle

it according to your local recycling methods. The foam cushions are CFC-

and HCFC-free and may be burnt in a suitable waste-to-energy combustion

facility, or compacted in landfill.

4.8.2 Identifying the Mechanical Configuration

The base station is available in two different mechanical configurations—

with or without provision for an internal AC power supply unit.

The mechanical configuration with provision for an internal AC power

supply has the following distinguishing features:

■larger air intake on the right-hand side of the front panel

■provision for AC connector on the left-hand side of the rear panel (refer

to Figure 6.2 on page 66)

■ground point on the right-hand side of the rear panel rather than on the

left-hand side

■different SI board and internal cables.

50 Installation TB7100 Installation and Operation Manual

4.8.3 Power Supply Options

The base station is available with or without an internal AC power supply

unit.

All base stations have an external DC input power connector which is used

as main power supply when no internal AC power supply unit is fitted.

When the internal AC power supply unit is fitted, the DC input can be used

as a DC backup power option. In case of AC mains failure the base station

will automatically and seamlessly switch to DC power input.

If no internal AC power supply unit is fitted, an external Tait T809-10-87xx

power supply can be used to supply the DC voltage required.

4.8.4 Setting the AC Mains Input Voltage

Warning!! The internal AC power supply unit contains

voltages that may be lethal. Refer to the ratings

label on the rear of the base station.

Ensure that all power sources (AC and DC) are disconnected

before opening the base station.

1. Disconnect all power sources before opening the base station.

2. Use a Torx T10 screwdriver to remove the 15 countersunk screws

securing the cover to the tray.

3. Set the 115V/230V AC mains voltage selector switch to the correct

AC mains input voltage (Figure 4.3).

Figure 4.3 115/230V AC mains voltage selector switch

115/230V AC mains

voltage selector switch

TB7100 Installation and Operation Manual Installation 51

4.8.5 Mounting the Base Station

1. Fit the base station into the cabinet or rack and secure it firmly with

an M6 (or 0.25in if you are using imperial fittings) screw, flat and

spring washer in each of the four main mounting holes b, as shown

in Figure 4.4 on page 51.

2. The base station can be wall-mounted by rotating the front mounting

brackets and fitting the optional rear brackets (TBBA03-01). When

the base station is wall-mounted ensure the airflow is from bottom to

top (front panel mounted down) or side to side.

3. For transport or in installations subject to vibration, the base station

should be supported at the rear using a transit bracket

(Tait recommends to use the TB7100 transit bracket, Tait part

number 302-05282-00).

Figure 4.4 Base station mounting points (configuration with AC power supply unit shown)

bmain mounting holes eDC power connector

cbase station fAC power connector

dground point Grack frame

52 Installation TB7100 Installation and Operation Manual

4.8.6 Cabling

We recommend that you route all cables to and from the base station along

the side of the cabinet so the cooling airflow is not restricted.

Cables should be well supported so that the connectors or terminals on the

base station and on the ends of the cables do not have to support the full

weight of the cables.

Cables must be routed so that they do not restrict the air outlets at the rear

of the base station.

4.8.7 Accessories

The base station can use the following accessories:

■T809-10-87xx power supply

■TBBA03-01 wall mounting kit

■

TBBA03-02 duplexer kit

(mechanical configuration without internal AC power supply unit)

■TBBA03-03 duplexer kit

(mechanical configuration with internal AC power supply unit)

■TMAA02-01 fist microphone.

TB7100 Installation and Operation Manual Replacing Modules 53

5 Replacing Modules

This section describes how to:

■remove and open and close the base station

■remove and fit the modules and components

General Important Before disassembling the base station, disconnect the base

station from any test equipment or power supply.

Disassemble only as much as necessary to replace the defective parts.

Inspect all disassembled parts for damage and replace them, if necessary.

Observe the torque settings indicated in the relevant figures.

Important To ensure adequate airflow through the base station, do not

cover the fan intake grill on the front panel. Do not operate

for more than a few minutes with the fan intake covered.

Important The transmitter and receiver modules must only be replaced

with base station modules.

Saving the Base

Station

Configuration

Before replacing a module in the base station, you should decide whether

you need to save its configuration data. If you are unsure whether you have

a record of the configuration, use the Programming Application to read the

base station and save the configuration files before removing any modules.

Once you have replaced the module, you will be able to restore the original

configuration by programming the saved configuration back into the base

station. If one or more of the modules is faulty, you may be unable to read

the base station. In this case, you will have to restore the configuration from

a back-up file. Refer to the section “Preparation for Operation” on page 77

for more information.

54 Replacing Modules TB7100 Installation and Operation Manual

5.1 Removing the Base Station and Opening the Tray

Important The modules in the base station are not hot-pluggable. It is

recommended the tray is removed from the rack before any

modules are replaced.

1. If an internal AC Power supply is fitted, disconnect the base station

from AC power g.

2. Remove the fuse e at the rear of the base station to disconnect the

base station from DC power.

3. Use a Philips #2 screwdriver to disconnect the cables from the DC

power connector f.

4. Disconnect the antenna connectors for transmit and receive d.

5. Disconnect any other connectors.

6. Disconnect the ground cable from the ground point c.

7. Use a PZ2 Pozidriv screwdriver to remove the four M6 screws, and

remove the base station from the rack.

8. Use a Torx T10 screwdriver to remove the 15 countersunk screws.

Remove the tray cover b.

Figure 5.1 Opening the tray

Configuration with internal AC power supply unit shown g

TB7100 Installation and Operation Manual Replacing Modules 55

5.2 Replacing the UI Board

Removal 1. Remove the volume knob by pulling slowly but firmly. The knob is

a friction fit and can leave the collet behind on the shaft. If this

happens, remove the collet from the shaft and place inside the knob.

2. Disconnect the speaker connector b.

3. Use a Torx T10 screwdriver to remove the three screws c together

with the spring washers and flat washers.

4. Insert the card remover tool (220-02034-xx) from the tool kit

(TBA0ST2), or a small flat-bladed screwdriver into the two small

holes at the bottom of the UI board. Lever the board completely off

the spring clips d.

5. Carefully slide the UI board towards the rear of the base station until

the volume-control shaft clears the front panel. Lift the UI board clear

of the chassis.

6. Disconnect the two Micro-MaTch connectors e.

Fitting 1. Plug the two Micro-MaTch connectors e into the UI board.

The Micro-MaTch connector for the transmitter is closest to the

edge of the UI board.

2. Align the volume-control shaft with the hole in the front panel, also

align the programming/microphone connector and function buttons

as the board is slid into place.

3. Gently slide the UI board into position so that the spring clips d are

engaged. Press firmly around the spring clips to ensure they are

engaged fully.

4. Use a Torx T10 screwdriver to fasten the three screws c to 4.5lb·in

(0.5N·m).

5. Plug the speaker connector b into the UI board.

6. Fit the volume knob onto the shaft and press firmly until fully seated.

Figure 5.2 Removing the UI board

Cables not shown.

Torx T10

4.5lb·in (0.5N·m)

56 Replacing Modules TB7100 Installation and Operation Manual

5.3 Replacing the Receiver Module

Removal Note Release the latch underneath the DC power connector before

attempting to disconnect it.

1. Disconnect the cables to the RF b, DC power c, system interface

d, and the user interface e connectors.

2. Use a Torx T10 screwdriver to remove the five screws f and g

together with the spring washers and flat washers.

3. Lift the receiver module clear of the chassis.

4. Make sure not to lose the metal heatsink g for the audio PA.

Note Although the boards of the transmitter and receiver modules look

alike, the board on the transmitter module can not replace a

receiver module. There is no heat transfer plate on the receiver

module. Check that the replacement module has links LK2, LK3

and LK4 not fitted as shown in Figure 5.3.

Fitting Note Before fitting the receiver module, make sure that the metal heat-

sink h for the audio PA is fitted to the tray chassis.

1. Place one screw g into the hole above the metal heatsink plate by:

a. holding the module at a 60° angle

b. fitting the screw on the Torx driver

c. slipping it through the shield hole and into the board hole.

2. Position the receiver module inside the tray chassis.

3. Use a Torx T10 torque-driver to tighten the screws f and g to

4.5lbf·in (0.5N·m).

4. Connect the cables to the RF b, DC power c, system interface d,

and user interface e connectors.

Figure 5.3 Replacing the receiver module

bcd

Check that links LK2, LK3 and

LK4 are not fitted.

Torx T10

4.5lb·in

Torx T10

4.5lb·in

Cables not shown.

TB7100 Installation and Operation Manual Replacing Modules 57

5.4 Replacing the Transmitter Module

Removal Note Release the latch underneath the DC power connector before

attempting to disconnect it.

1. Disconnect the cables to the RF b, DC power c, system interface

d, and the user interface f connectors.

2. Use a Torx T10 screwdriver to remove the screw h fastening the

temperature sensor to the heatsink.

3. Use a Torx T10 screwdriver to remove the four screws g fastening

the heatsink to the tray chassis.

4. Lift the transmitter module clear of the tray chassis.

Fitting Note Although the boards of the transmitter and receiver modules look

alike, the board on the transmitter module can not replace a

receiver module. There is no heat transfer plate on the receiver

module. Check that the replacement module has links LK2, LK3

and LK4 not fitted as shown in Figure 5.4.

1. Position the transmitter module inside the tray chassis.

2. Use a Torx T10 torque-driver to fasten the four screws g to 4.5lbf·in

(0.5N·m).

3. Use a Torx T10 torque-driver to fasten the temperature sensor with

the screw h to 4.5lbf·in (0.5N·m).

4. Connect the cables to the RF b, DC power c, system interface d,

and the user interface f connectors.

Figure 5.4 Replacing the transmitter module

bcd

Check that links LK2, LK3 and

LK4 are not fitted.

Torx T10

4.5lb·in

Torx T10

4.5lb·in Cables not shown.

58 Replacing Modules TB7100 Installation and Operation Manual

5.5 Replacing the SI Board

Removal 1. Disconnect the system interface cables e to the transmitter and the

receiver, the fan control cable f, the temperature sensor cable g, and

the mains power present cable, and move them to one side.

2. Remove the DC power cables h and move them to one side.

Note the connection positions.

3. Use a Torx T10 screwdriver to remove the two screws j.

Use a PZ1 Pozidriv screwdriver to remove the screw i on the

heatsink of U406.

4. Carefully lift the front of the SI board off the spring clips 1).

5. Carefully slide the SI board towards the front of the base station until

the connectors b, c and d clear the rear panel. Lift the SI board

clear of the chassis.

Fitting 1. Slide the SI board into the tray chassis by fitting the connectors b, c

and d into the rear panel.

2. Press down firmly on the front of the SI board to engage the two

spring clips j.

Important Make sure that the thermal pad is fitted under and the

plastic insulating washer is fitted on U406.

3. Use a torque-driver to fasten the two screws j (Torx T10) the screw

i (PZ1) on the heatsink of U406 to 4.5lb·in (0.5N·m).

4. Connect the system interface cables e to the transmitter and the

receiver, the fan control cable f, the temperature sensor cable g, and

the DC power cables h.

Figure 5.5 Replacing the SI board

bc d

Torx T10

4.5lb·in

1) ef

PZ1

4.5lb·in

Cables not shown.

TB7100 Installation and Operation Manual Replacing Modules 59

5.6 Replacing the Transmitter and Receiver Fans

Removal 1. Use a Torx T10 screw driver to remove the four screws b securing

the fan duct d in the tray chassis.

2. Disconnect the fan control loom from the fan power board c.

Slide back the fan duct d and lift clear.

3. Unplug the fan to be replaced from the fan power board c on the

fan duct d.

4. Use a PZ1 Pozidriv screwdriver to remove the two M3×25mm

screws e and remove the fan.

Fitting 1. Place the fan into position on the fan duct e and use a PZ1

screwdriver to fasten the two M3×25 screws e to 4.5lb·in (0.5N·m).

2. Thread the fan cable through the hole in the side of the fan duct.

Plug the fan into the fan power board c.

3. Slide the fan duct d into the chassis. Plug the fan control loom into

the fan power board c.

4. Use a Torx T10 screwdriver to fasten the four screws b to 4.5lb·in

(0.5N·m).

Figure 5.6 Replacing the transmitter and receiver fans

def

Torx T10

4.5lb·in

PZ1

4.5lb·in

60 Replacing Modules TB7100 Installation and Operation Manual

5.7 Replacing the Fan Power Board

Note The fan power board is manufactured as part of the UI board and

cannot be ordered separately. For more information, refer to

“Spare Parts” in the service manual.

The circled numbers in this section refer to the items in Figure 5.6 on

page 59.

1. Disconnect the fan control cable and the fan cables from the fan

power board c.

2. Use a Torx T10 screwdriver to remove the screw f attaching the fan

power board c to the fan duct d.

3. Fitting is carried out in reverse order.

5.8 Replacing the Temperature Sensor Board

Note The temperature sensor board is manufactured as part of the

SI board and cannot be ordered separately. For more information,

refer to “Spare Parts” in the service manual.

1. Disconnect the temperature sensor cable from the SI board

(Figure 5.5, g).

2. Use a Torx T10 screwdriver to remove the screw (Figure 5.4, h)

attaching the temperature sensor board to the transmitter module.

3. Fitting is carried out in reverse order.

TB7100 Installation and Operation Manual Replacing Modules 61

5.9 Replacing the AC Power Supply Unit, Fan and Filter

Module

Removal 1. Disconnect the base station from AC mains power.

2. Remove the fuse at the rear of the base station to disconnect the base

station from DC power.

3. Disconnect the fan g at connector PL7 1! of the UI board.

4. Use a Torx T10 screwdriver to remove the two screws e that hold

the AC power supply f unit to the main chassis.

5. Slide the AC power supply unit from its position to gain access to the

fan.

6. Use a PZ1 Posidriv screwdriver to remove the two M3 x 25mm

screws h that hold the fan in place, and remove the fan.

7. Disconnect the cable for the mains fail signal at J110 c and the

DC power cable at J102 b of the SI board.

8. Disconnect the connection (not shown) from the AC filter module

d to the AC power supply unit, and remove the AC power supply

unit.

9. Slide the AC filter module from its position and remove it.

Figure 5.7 Replacing the AC power supply unit, fan, filter module, and speaker

Torx T10

4.5lb·in dfe

PZ1

4.5lb·in

jTorx T10

4.5lb·in

Cables not shown.

62 Replacing Modules TB7100 Installation and Operation Manual

Fitting 1. Slide the AC filter module d into the securing tabs at the rear of the

tray.

2. Place the fan g into position on the AC power supply unit f and

use a PZ1 screwdriver to fasten the two M3×25 screws h to 4.5lb·in

(0.5N·m).

3. Connect the AC power supply unit to the AC filter module.

4. Slide the AC power supply unit into position on the tray and connect

the fan to connector PL7 1! on the UI board.

5. Use a Torx T10 screwdriver to fasten the two screws e that hold the

AC power supply unit in place to 4.5lb·in (0.5N·m).

6. Connect the cable for the mains fail signal at J110 c and the DC

power cable at J102 b of the SI board.

5.10 Replacing the Speaker

The circled numbers in this section refer to the items in Figure 5.7 on

page 61.

1. Disconnect the speaker cable from connector PL2 1) on the

UI board.

2. Use a Torx T10 screw driver to remove the two screws and washers

i securing the speaker i to the tray.

3. Fitting is carried out in reverse order. The torque for the Torx T10

screws i is 4.5lb·in (0.5N·m).

TB7100 Installation and Operation Manual Replacing Modules 63

5.11 Final Reassembly

Figure 5.8 shows the assembled configuration with internal AC power

supply unit. Figure 5.9 shows the assembled configuration without internal

AC power supply unit.

1. Ensure all internal cables are connected correctly as shown below.

2. Place the tray cover onto the chassis.

3. Use a Torx T10 torque-driver to fasten the tray cover with the 15

countersunk screws to 4.5lb·in (0.5N·m).

4. Fit the fuse b at the rear of the base station.

Figure 5.8 Final reassembly (configuration with internal AC power supply unit)

Fuse

64 Replacing Modules TB7100 Installation and Operation Manual

Figure 5.9 Final reassembly (configuration without internal AC power supply unit)

Fuse

TB7100 Installation and Operation Manual Connections 65

6 Connections

Overview This section gives an overview of looms and cables, and describes the

specifications and pinouts of the external and internal connectors.

Figure 6.1 provides an overview of the connections.

For information on the factory connector and the internal options

connector of the transmitter and receiver, refer to the PCB information.

Figure 6.1 Connectors, looms and cables

DC Input

Connector System

Connector Serial Data

Connector AC Input

Connector

Tx/Ant

Connector

Ground

Point

Transmitter

Module

UI Board

Power Supply

Unit

Fan

FanFan

Fan Power Board

Speaker

Temperature

Sensor

Prog/Mic

Connector

Receiver/SI

DC power

Transmitter/SI

Receiver/UI

Transmitter/UI

AC Input Filter

Module

115V/230V

Selector

Switch

SI Board

Fuse

Mains fail signal

SK100

PL100 SK101 SK103

SK100

PL100 SK101 SK103

RF connector

DC power

connector

Auxiliary

connector

User interface

connector

Receiver

Module

RF connector

DC power

connector

Auxiliary

connector

User interface

connector

J102 J103

J105 J106 J104

J201

J200

J110

J100 J202

J101

DC power

Fan power

SK1

SK3

SK2

PL2PL7PL8

PL4

PL3

PL5

PL6

Factory

only

PL101

J600

DC Output

AC power

Configuration with internal AC power supply unit shown

66 Connections TB7100 Installation and Operation Manual

6.1 External Connectors

Figure 6.2 shows the external connectors:

AC Power

Connection If an internal AC power supply unit is fitted, AC power is available in

195VAC to 264VAC or 99VAC to 135VAC. The voltage selector switch is

located under the base station cover. (Refer to “Setting the AC Mains Input

Voltage” on page 50.)

The AC power connector at the rear of the base station is a standard 3-way

AC pin connector.

Warning!! The internal AC power supply unit contains

voltages that may be lethal. Refer to the ratings

label on the rear of the base station. The internal

AC power supply contains no user-servicable

parts.

Important Wrong mains voltage! Before connecting to the AC power

connector, ensure that the internal 115V/230V voltage

mains selector switch is set to the correct mains voltage.

The base station must be installed so that the rear of the base station is

located in a service access area. The internal AC power supply unit must be

connected to the mains supply source by trained personnel in accordance

with local and national regulations.

Ensure that all power sources (AC and DC) are disconnected

before opening the base station.

Figure 6.2 External connectors (configuration with internal AC Power supply unit shown)

programming/microphone

connector (PROG/MIC)

ground

point

serial data

connector

(IOIOI)

system

connector

(SYSTEM)

DC power

connector

(13.8VDC

13A MAX)

receiver

antenna

connector

(RX)

transmitter

antenna

connector

(TX/ANT)* *Tx/ANT is Tx and Rx, if the duplexer is fitted.

AC power

connector

TB7100 Installation and Operation Manual Connections 67

DC Power

Connection The base station is designed to accept a nominal 13.8V DC, with negative

ground.

The DC power connector (J105) at the rear of the base station is a heavy-

duty M4 screw terminal connector suitable for many forms of connection.

You must connect the DC supply from the battery to the base station via a

readily accessible disconnect device such as a fuse or DC-rated circuit

breaker with the appropriate rating, as shown in the table below. The DC

input leads should be of a suitable gauge to ensure less than 0.2V drop at

maximum load over the required length of lead.

Terminate the DC input leads with a suitable crimp connector for attaching

to the J105 M4 screws.

Ground Point The ground point is a terminal for grounding the tray to the mounting rack.

Pin Signal Name Signal Type Notes

1 13.8VDC input

2 ground input

external view

Nominal Supply

Voltage Input Voltage

Range

Circuit

Breaker/Fuse

Rating

Recommended

Wire Gaugea

a. For a length of 1.5m to 2m (5ft to 6.5ft) (typical).

13.8VDC 10VDC to 16VDC 20A 8AWG / 8.35mm2

Figure 6.3 Recommended DC power connection

Battery

TB7100

base station

Circuit Breaker

or Fuse

68 Connections TB7100 Installation and Operation Manual

RF Connections

(RXand TX/ANT)The RF input to the base station is via the RX connector (N-type) on the

rear panel of the base station. The RF output is via the TX/ANT connector

(N-type) on the rear panel of the base station.

The RF connector is an N-type connector with an impedance of 50Ω.

Important The maximum RF input level is +27dBm. Higher levels

may damage the radio.

Pin Signal Name Signal Type Notes

1 RF RF analog

2 GND RF ground

rear view

TB7100 Installation and Operation Manual Connections 69

System Connector

(SYSTEM)The system connector (J106) at the rear of the base station is a 25-way

standard-density D-range socket.

Pin Signal Name Signal Type Notes

1 Rx line output + audio output transformer isolated line <6dBm

2 Tx/Rx digital input 1

(AUX_GPI1) input high ≥1.7 V, low ≤0.7 V

3 Tx/Rx digital input 2

(AUX_GPI2)

4 Rx line output – audio output transformer isolated line

5 Tx line input + audio input transformer isolated line

6 Tx/Rx digital input 3

(AUX_GPI3) input high ≥1.7 V, low ≤0.7 V

7 Tx/Rx digital input 4

(AUX_GPIO4) input output: high ≥3.1 V (no load),

low <0.6 V (10mA sink)

input: high ≥1.7 V, low ≤0.7 V

8 Tx line input – audio input transformer isolated line

9 RSSI output DC signal, 0.6 to 2.5V

10 Tx digital in/out 1

(TX_AUX_GPIO5) input/output output: high ≥3.1 V (no load),

low <0.6 V (10mA sink)

input: high ≥1.7 V, low ≤0.7 V

11 Tx audio input audio input

12 Tx digital in/out 2

(TX_AUX_GPIO6) input/output output: high ≥3.1 V (no load),

low <0.6 V (10mA sink)

input: high ≥1.7 V, low ≤0.7 V

13 ground ground

14 Rx gate output open collector

15 Tx key input active low

16 Rx relay (comm) output opto-isolated

17 Rx relay (NO or NC) output

18 Rx Inhibit input 0 to 3.3V, active low

19 Rx digital in/out 1

(RX_AUX_GPIO5) input/output output: high ≥3.1 V (no load),

low <0.6 V (10mA sink)

input: high ≥1.7 V, low ≤0.7 V

20 Tx Opto input + input input voltage range 10VDC to

60VDC

21 Tx Opto input – input

22 Rx digital in/out 2

(RX_AUX_GPIO6) input/output output: high ≥3.1 V (no load),

low <0.6 V (10mA sink)

input: high ≥1.7 V, low ≤0.7 V

23 Digital output/Tx relay output active low, sinks up to 250mA

24 Rx audio output output <4.4Vpp

25 13.8 volt output power output resetable SMD fuse 1.5A

external view

70 Connections TB7100 Installation and Operation Manual

Serial Data

Connector (IOIOI)The serial data connector (J1054) labelled IOIOI is a 9-way female D-range

connector, which provides a data connection to the base station.

Programming/Micro

phone Connector

(PROG/MIC)

The PC running the programming and calibration application is connected

to the base station via the programming/microphone connector (SK3) of

the UI board. The programming/microphone connector is an 8-way RJ45

socket.

Use the TPA-SV-006 or the T2000-A19 programming lead and a

TMAA20-04 adapter to connect the PC to the base station. It is possible to

plug the RJ11 directly into the RJ45 socket without the use of the adapter,

but this is not recommended. A microphone can also be connected to the

base station via this connector.

Pin Signal Name Signal Type Notes

1 not connected not used

2 receive data output data transmitted by TB7100

3 transmit data input data received by TB7100

4 not connected not used

5 ground ground

6 not connected not used

7 ready to transmit output request to send

8 clear to send input clear to send

9 not connected not used

external view

Pin Signal Name Signal Type Notes

1 not connected not connected

2 +13V8_SW output +13.8V, 250mA

3 TXD input transmit data

4 PTT input PTT

5 MIC_AUD_IN input voice band (microphone) input

6 GND ground

7 RXD output receive data

8 not connected not connected

12345678

external view

TB7100 Installation and Operation Manual Connections 71

6.2 Internal Connectors

6.2.1 Transmitter and Receiver Connectors

The internal connectors of the transmitter and receiver are the same for both

modules.

Note The signals on the user interface connectors are different for the

transmitter and the receiver.

RF Connectors The RF connectors of the transmitter and the receiver are N-type

connectors with an impedance of 50Ω.

DC Power

Connectors The DC power connectors of the transmitter and the receiver are the

interface for the primary 13.8V power source. There are different

DC power connectors for the 50W/40W and 25W versions.

Pin Signal name Signal type Notes

1AGND ground

2 SPK– analog output not connected

3 SPK+ analog output not connected

4 13.8VDC DC power input

external view

50W/40W

1 2 3 4

external view

25W

72 Connections TB7100 Installation and Operation Manual

Auxiliary

Connectors The auxiliary connectors of the transmitter and receiver are 15-way

standard-density D-range sockets.

User Interface

Connector The user interface connectors (SK100) of the transmitter and the receiver is

a 15-way moulded plastic connector.

Pin Signal Name Signal Type Notes

1 AUX GPIO7

2 AUX GPIO4

3 AUX RXD input

4 AUX GPI3

5 AUX GPI2

6 RSSI output

7 AUX TAP IN input

8 13.8VDC SW output

9 AUX GPIO6

10 AUX GPIO4

11 AUX TXD output

12 AUX GPI1

13 AUD TAP OUT output

14 AUX MIC AUD input

15 AGND ground

external view

Pin Signal Name Signal Type Notes

Transmitter Receiver

1 RX AUD no connection no connection no connection

2 13.8VDC no connection output +13V8DC for UI board

3 CH TXD input input programming data

4 CH PTT input no connection microphone PTT

5 CH MIC AUD input output audio from microphone

6 AGND ground ground analog ground

7 CH RXD output output programming data

8 DGND ground ground digital ground

9 CH ON OFF output output digital ground

10 VOL WIP DC input input volume control

11 CH SPI D0 output output

12 CH LE output output

13 CH GPIO1 output output digital ground

14 3.3VDC no connection output +3V3DC for UI board

15 CH SPI D1 input input

16 CH SPI CLK output output

17 SPK- no connection output speaker audio

18 SPK+ no connection output speaker audio

external view

pin 1 closest to PCB

TB7100 Installation and Operation Manual Connections 73

6.2.2 SI Board Connectors

DC Power

Connectors The two DC power connectors (J102 and J103) on the SI board are heavy-

duty M4 screw terminals. J102 (if fitted) accepts power from the internal AC

power supply unit. J103 distributes the DC power to the transmitter and the

receiver.

System Interface

Connector to

Transmitter

The system interface connector (J101) to the transmitter is a 16-way surface-

mounted connector.

Pin Signal Name Signal Type Notes

1 Tx and Rx 13.8VDC J102 :input

J103: output

2 Tx and Rx ground J102 :input

J103: output

external view

Pin Signal Name Signal Type Notes

1 TX_AUX_GPIO7 output Tx key signal

2 TX_AUX_GPIO6 bidirectional digital input/output

3 TX_AUX_GPIO5 bidirectional digital input/output

4 TX_AUX_GPIO4 bidirectional digital input/output

5 TX_AUX_RXD input data

6 TX_AUX_TXD output data

7 TX_AUX_GPI3 input digital input

8 TX_AUX_GPI1 input digital input

9 TX_AUX_GPI2 input digital input

10 TX_AUD_TAP_OUT no connection

11 TX_RSSI no connection

12 TX_MIC_AUD output

13 TX_AUD_TAP_IN output Tx audio

14 TX_GND ground ground

15 TX_13V8 no connection

16 N/C no connection

external view

1615

74 Connections TB7100 Installation and Operation Manual

System Interface

Connector to

Receiver

The system interface connector (J100) to the receiver is a 16-way surface-

mounted connector.

Pin Signal Name Signal Type Notes

1 RX_AUX_GPIO7 input gate signal

2 RX_AUX_GPIO6 bidirectional digital input/output

3 RX_AUX_GPIO5 bidirectional digital input/output

4 RX_AUX_GPIO4 bidirectional digital input/output

5 RX_AUX_RXD input data

6 RX_AUX_TXD output data

7 RX_AUX_GPI3 input digital input

8 RX_AUX_GPI1 input digital input

9 RX_AUX_GPI2 input digital input

10 RX_AUD_TAP_OUT input receive audio

11 RX_RSSI input RSSI

12 RX_MIC_AUD no connection

13 RX_AUD_TAP_IN no connection

14 RX_GND ground ground

15 RX_13V8 no connection

16 N/C no connection

1615

external view

TB7100 Installation and Operation Manual Connections 75

6.2.3 UI Board Connectors

User Interface

Connector to

Transmitter

The user interface connector (SK1) to the transmitter is a 16-way

MicroMaTch connector.

User Interface

Connector to

Receiver

The user interface connector (SK2) to the receiver is a 16-way MicroMaTch

connector.

Pin Signal Name Signal Type Notes

1 TX_RX_AUD no connection no connection

2 TX_+13V8_SW no connection no connection

3 TX_CH_TXD output programming data

4 TX_CH_PTT output microphone PTT

5 TX_MIC_AUD_OUT output audio from microphone

6 TX_AGND ground analogue ground

7 TX_CH_RXD input programming data

8 TX_DGND ground digital ground

9 TX_CH_ON_OFF input digital ground

10 TX_VOL_WIP_DC output no connection

11 TX_CH_SPI_D0 input

12 TX_CH_LE input

13 TX_CH_SPIO1 input digital ground

14 TX_+3V3 no connection no connection

15 TX_CH_SPI_DI output

16 TX_CH_SPI_CLK input

17 TX_CH_SPK- no connection no connection

18 TX_CH_SPK+ no connection no connection

external view

Pin Signal Name Signal Type Notes

1 RX_RX_AUD no connection no connection

2 RX_+13V8_SW input +13V8DC for PCB

3 RX_CH_TXD output programming data

4 RX_CH_PTT no connection no connection

5 RX_MIC_AUD_OUT input no connection

6 RX_AGND ground analogue ground

7 RX_CH_RXD input programming data

8 RX_DGND ground digital ground

9 RX_CH_ON_OFF input digital ground

10 RX_VOL_WIP_DC output volume control

11 RX_CH_SPI_D0 input

12 RX_CH_LE input

13 RX_CH_GPIO1 input digital ground

14 RX_+3V3 input +3V3DC for PCB

15 RX_CH_SPI_DI output

16 RX_CH_SPI_CLK input

17 RX_CH_SPK- input speaker audio

18 RX_CH_SPK+ input speaker audio

external view

76 Connections TB7100 Installation and Operation Manual

TB7100 Installation and Operation Manual Preparation for Operation 77

7 Preparation for Operation

7.1 Introduction

The base station operation can be modified by the use of links and

programmable settings.

The base station can be configured for operation in the following basic

modes of operation:

■Line-controlled base: The base station transmit audio and key is derived

via the system interface. Audio response is link-selectable.

■Talk through repeater (voice): The receiver audio is directly connected

to the transmitter and the transmitter is keyed by the receiver gate.

Audio response in this mode is software-selectable.

■Data repeater: The received data line is connected to the transmit data

line. receiver gate and transmitter key signals are not used.

■RF modem: Data on the serial interface is connected to the transmitter

and the receiver.

■TaitNet trunking.

7.2 Mode of Operation

This section shows how to set up the base station for various modes of

operation.

Examples are:

■line-controlled base

■talk through repeater

■RF modem

■data repeater

■TaitNet trunking.

Where applicable, the procedure for setting any of the audio levels or other

adjustment points will be described, along with the procedure for measuring

a variety of parameters commonly monitored.

To verify the operation of the base station it is best to configure it as a line-

controlled base first. In this mode of operation the receiver and transmitter

modules can be independently tested because all the audio inputs and

outputs are accessible via the system interface connector. When the base

station has been tested as a line-controlled base, it is then a simple process to

change the links to the required mode of operation and perform any

additional functional testing required for that mode of operation.

78 Preparation for Operation TB7100 Installation and Operation Manual

7.3 Line-controlled Base

In the line-controlled base mode the audio and control signals are routed

from the external 25-way D-range connector through the system interface

to the receiver and transmitter modules. External equipment is used to

control the operation of the base station.

7.3.1 Test Equipment Required

The following test equipment is used to setup the base station for line-

controlled base operation:

■TBA0STU calibration test unit (CTU) which includes the CTU adaptor

and CTU cable, or

■TBA0ST1 calibration test unit (CTU), TBB0STU-TBB CTU adaptor

(220-02068-xx) and CTU cable (219-02888-xx)

■PC, programming cables and the TB7100 programming application

■digital voltmeter

■DC power supply (not necessary with internal AC power supply unit

option)

■RF test set with:

■RF power meter

■modulation analyser

■RF signal generator

■sinad meter

■audio distortion meter

Figure 7.1 Line-controlled base

System Interface

Receiver Transmitter

RF In RF Out

Rx Audio

Rx Gate

Tx Audio

Tx Key

TB7100 Installation and Operation Manual Preparation for Operation 79

■audio level meter

■audio signal generator.

Calibration Test Unit

(CTU) The CTU is used to configure and test the base station. The same CTU is

used for TB8000 and TB9000 base station equipment, so only some of the

features on the CTU apply to the TB7100 base station. The CTU adaptor

is plugged into the system connector of the CTU. The CTU cable is

plugged into the system connector of the base station.

For more information on the CTU refer to the TBA0STU/TBA0STP

Calibration and Test Unit Operation Manual (MBA-00013-xx).

7.3.2 Test Equipment Setup

1. Connect the PC to the programming port on the front panel of the

base station. See “Connecting to the PC” on page 105.

2. Plug the adaptor into the system connector on the CTU. Connect the

adaptor cable to the system connector of the base station.

Note Connections between the CTU and the test equipment will vary

and are described in the relevant test steps.

3. Ensure all switches on the CTU are in the 1 or OFF position

(inactive).

4. Connect the receiver N-type connector to the RF test set (signal

generator) output port.

5. Connect the transmitter N-type connector to the RF test set (power

and modulation meter) input port, check the test set is rated for the

transmit power of the base station.

6. Connect the 13.8V power supply to the DC input on the base station,

ensuring correct polarity.

80 Preparation for Operation TB7100 Installation and Operation Manual

7.3.3 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the following links on the SI board.

Links of the mandatory settings must be in the position indicated. Links of

the optional settings must be in one of the positions listed. The defaults are

generally recommended.

Replace the cover as detailed in “Final Reassembly” on page 63.

Table 7.1 Line-controlled base—mandatory settings

LINK Name Pins Position Function Comments

J400 Tx Key

Source 3 1-2 Line-controlled Base mode External PTT signal to transmitter

J502 Tx Audio

Source 3 1-2 Line-controlled Base mode Balanced and unbalanced audio

inputs to transmitter

J503 Rx Audio

Destination 3 2-3 Line-controlled Base mode Received audio to balanced and

unbalanced audio outputs

W401

W402 TOI 9V Enable

TOI 4.5V Enable 2

2Not

fitted Tone on Idle disable Refer “Tone On Idle (TOI)” on

page 118 to enable idle tone.

Table 7.2 Line-controlled base—optional settings

LINK Name Pins Position Function Comments

J500 Line Out

Frequency

Response

31-2

2-3 Flat response

De-emphasis Default position is 2-3

J501 Line In

Frequency

Response

31-2

2-3 Flat response

De-emphasis Default position is 2-3

J507 Line In

Destination 31-2

2-3 Tx Line In to Aux Mic

Tx Line In to Audio Tap In Default position is 2-3.

Position 1-2 is usually used only

by trunking systems.

J206 Fan Control 1 3 1-2

2-3 Fan controlled by J207

Fan always on Default position is 1-2

J207 Fan Control 2 3 1-2

2-3 Fan Tx key-controlled

Fan temperature-controlled Default position is 2-3

TB7100 Installation and Operation Manual Preparation for Operation 81

7.3.4 Applying Power

Before turning on the base station, check that:

■all looms and cables at the front and rear of the base station are fitted

correctly

■all connectors are secure

■the 20A fuse is fitted.

Turn on the power supply and check that the base station powers up

correctly:

■The power LED on the user interface lights up.

■The LCD indicates the current channel number.

Figure 7.2 System interface link positions

J400J500 J502J503

J207

W401

W402

J206

J507

J501

82 Preparation for Operation TB7100 Installation and Operation Manual

7.3.5 Programming

To program a base station for line-controlled base operation follow the

instructions below. Do not add CTCSS or any additional settings at this

stage. These are covered in “Programmable Features” on page 105. See

“Connecting to the PC” on page 105 before beginning.

Transmitter 1. Place the transmit/receive programming switch on the user interface

into the transmit position.

2. Read the transmitter or start with a new transmitter data file.

3. Use the reset to defaults command under the file menu to ensure all

the mandatory and recommended settings are in their correct default

states.

4. Open the specifications form and select the correct RF band, not

required if the transmitter file was read.

5. Open the channels form and add as many channels as are required.

For each channel enter the:

■transmit frequency

■Tx subaudible signalling value (leave as “None”)

■power level

■bandwidth.

6. Open the key settings form and select the required function for each

function key.

For example:

■FN1 = Preset Channel

■FN2 = Preset Channel

■FN3 = Preset Channel

■FN4 = None

7. Program the transmitter.

Receiver 1. Place the transmit/receive programming switch on the user interface

into the receive position.

2. Read the receiver or start with a new receiver data file.

3. Use the reset to defaults command under the file menu to ensure all

the mandatory and recommended settings are in their correct default

states.

4. Open the specifications form and select the correct RF band, not

required if the receiver file was read.

5. Open the channels form and add as many channels as are required.

For each channel enter:

TB7100 Installation and Operation Manual Preparation for Operation 83

■receive frequency

■Rx subaudible signalling value (leave as “None”)

■squelch setting

■bandwidth.

6. Open the key settings form and select the required function for each

function key.

For example:

■FN1 = Preset Channel (same as transmitter)

■FN2 = Preset Channel (same as transmitter)

■FN3 = Preset Channel (same as transmitter)

■FN4 = Monitor / Squelch override

7. Program the receiver.

7.3.6 Receiver Audio Level Adjustment

Unbalanced Line 1. Connect the unbalanced output from the CTU to the audio input

port on the test set and set up the test set to measure the audio level.

2. Set the RF signal generator to the correct RF frequency, modulated

with a 1kHz audio tone at 60% of full system deviation.

3. Set the RF output level to -70dBm.

4. Verify that the receiver gate opens and the busy LED turns on.

5. Adjust RV502 (UNBAL OUT) on the rear panel to set the

unbalanced output to the required level (typically 1Vp-p).

Balanced Line 1. Connect the line output from the CTU to the audio input port on

the test set and set up the test set to measure the audio level.

2. Turn the CTU 600 ohm switch on.

3. Set the RF signal generator to the correct RF frequency modulated

with a 1kHz audio tone at 60% of full system deviation.

4. Set the RF output level to -70dBm.

5. Verify that the receiver gate opens and the busy LED turns on.

6. Adjust RV503 (BAL OUT) on the rear panel to set the balanced

output to the required level (typically -10dBm).

84 Preparation for Operation TB7100 Installation and Operation Manual

7.3.7 Receiver Functional Testing

This section describes how to test some parameters which are commonly

monitored.

Sensitivity The sensitivity can be measured using either the balanced or unbalanced

audio output.

1. Connect the required audio output from the CTU to the audio input

port on the test set.

2. Connect the RF output from the test set to the Rx input on the rear

panel.

3. Set up the test set to measure the SINAD level.

4. Set the RF signal generator to the correct RF frequency, modulated

with a 1kHz audio tone at 60% of full system deviation.

5. Set the RF output level to -70dBm.

6. Verify that the receiver gate opens and the busy LED turns on.

7. Reduce the RF level until 12dB SINAD is obtained.

Note This level will vary depending on the bandwidth and frequency

response of the channel. Consult the specifications manual for val-

ues.

Note If the mute closes before 12dB SINAD is reached then squelch

override may be programmed to a function key.

Pressing this key will prevent the mute from closing.

RSSI Level 1. Connect a voltmeter to the RSSI test point on the CTU.

2. Set the RF signal generator to the correct RF frequency.

3. Set the RF level to -100dBm.

4. Verify the RSSI voltage is 1.1V±300mV.

Note If necessary adjust the RF level from –50dBm to –115dBm and

verify that the RSSI voltage changes at 25mV/dB.

Mute Thresholds The mute thresholds can be measured using either the balanced or

unbalanced output.

1. Connect the required audio output from the CTU to the audio input

port on the test set.

2. Set up the test set to measure the SINAD level.

TB7100 Installation and Operation Manual Preparation for Operation 85

3. Set the RF signal generator to the correct RF frequency, modulated

with a 1kHz audio tone at 60% of full system deviation.

4. Set the RF output level to –70dBm.

5. Verify that the receiver gate opens and the busy LED turns on.

6. Reduce the RF level until the mute closes. This RF level is the mute

close threshold.

7. Increase the RF level until the mute opens. This RF level is the mute

open threshold.

8. The difference between these two levels is the mute hysteresis.

Note The mute thresholds are determined by the squelch setting pro-

grammed in the receiver’s channel table.

Note If the thresholds are not suitable use the calibration application to

change the squelch setting on the channel table.

Distortion The Rx Distortion can be measured using either the balanced or unbalanced

output.

Note Before beginning this test verify the test set is rated to handle the

transmit power being tested.

1. Connect the required audio output from the CTU to the audio input

port on the test set.

2. Set up the test set to measure the distortion level.

3. Set the RF signal generator to the correct RF frequency, modulated

with a 1kHz audio tone at 60% of full system deviation.

4. Set the RF output level to –70dBm.

5. The measured distortion level should be within the receiver

specifications as detailed in the specifications manual.

7.3.8 Transmitter Audio Level Adjustment

Balanced Line 1. Set up the test set to measure the transmitter modulation level.

2. Connect the CTU line input to the audio output port on the test set.

3. Set up the test set audio output to be 1kHz at the required line level

(typically –10dBm).

4. Activate the Tx Key switch and verify that the transmission is at the

programmed power and frequency.

86 Preparation for Operation TB7100 Installation and Operation Manual

5. Adjust RV500 (BAL IN) on the rear panel to the required deviation

(typically 60% of full system deviation).

Unbalanced Line 1. Set up the test set to measure the transmitter modulation level.

2. Connect the CTU unbalanced input to the audio output port on the

test set.

3. Set up the test set audio output to be 1kHz at the required line level

(typically 1Vp-p).

4. Activate the Tx Key switch and verify that the transmission is at the

programmed power level and frequency.

5. Adjust RV501 (UNBAL IN) on the rear panel to the required

deviation (typically 60% of full system deviation).

7.3.9 Transmitter Functional Testing

This section describes how to test some parameters commonly found on RF

channel test sheets.

Tx Power and

Frequency 1. Set up the test set to measure frequency and power level.

2. Activate the Tx Key switch on the CTU.

3. Verify that the measured power level and frequency match the

programmed settings, within the expected accuracy of the test set and

taking into account cable losses.

Note If the measured value does not agree with the programmed set-

tings, the transmitter module is either faulty or needs recalibrating.

Audio Distortion When measuring the transmitter audio distortion, the audio input signal can

be via either the balanced or unbalanced audio input.

1. Connect the audio output from the test set to the required CTU

audio input.

2. Set up the modulation analyser in the test set to measure the

distortion of the modulated audio signal.

3. Set up the test set audio generator output to be 1kHz and at the level

required to produce 60% full system deviation (this is the same level

used in the audio level adjustment section).

4. Activate the Tx Key switch and verify that the measured deviation is

60% of full system deviation.

5. The measured distortion level should be within the transmitter

specifications as detailed in the specifications manual.

TB7100 Installation and Operation Manual Preparation for Operation 87

Note If the measured value does not agree with the programmed set-

tings, the transmitter module is either faulty or needs recalibrating.

Maximum

Deviation When measuring the maximum deviation, the audio input signal can be via

either the balanced or unbalanced audio input.

If CTCSS is to be added, this should be done before carrying out this test.

Refer to “Enabling Subaudible Signalling” on page 115 for instructions.

1. Set up the test set to measure the deviation of the RF signal.

2. Connect the audio output from the test set to the required CTU

audio input.

3. Set up the test set audio generator output to be 1kHz and at the

required level to produce 60% full system deviation (this is the level

used in the audio level adjustment section).

4. Activate the Tx Key switch and verify that the measured deviation is

60% of full system deviation.

5. Increase the test set audio generator output level by 20dB and sweep

the audio frequency from 100Hz to 4kHz.

6. The maximum measured deviation level should not exceed the full

system deviation programmed for the channel.

Note If the measured value exceeds the programmed settings, the trans-

mitter module is either faulty or needs recalibrating.

88 Preparation for Operation TB7100 Installation and Operation Manual

7.4 Talk Through Repeater

Once the base station has been set up and tested as a line-controlled base, it

is simple to convert it into a talk through repeater. In this mode of operation

the received audio and receiver gate from the receiver module are looped

back to the transmitter.

7.4.1 Test Equipment Required

The following test equipment is used to setup the base station for talk

through repeater operation:

■PC, programming cables and the TB7100 programming application

■digital voltmeter

■DC power supply

■RF test set with:

■RF power meter

■modulation analyser

■RF signal generator

■sinad meter

■audio distortion meter

■audio level meter

■audio signal generator.

Figure 7.3 Talk through repeater

Receiver Transmitter

System Interface

RF In RF Out

Rx Audio

Rx Gate

Tx Audio

Tx Key

TB7100 Installation and Operation Manual Preparation for Operation 89

7.4.2 Test Equipment Setup

1. Connect the PC to the programming port on the front panel of the

base station. See “Connecting to the PC” on page 105.

2. Connect the receiver N-type connector to the RF test set (signal

generator) output port.

3. Connect the transmitter N-type connector to the RF test set (power

and modulation meter) input port, check the test set is rated for the

transmit power of the base station.

4. Connect the 13.8V power supply to the DC input on the base station,

ensuring correct polarity.

7.4.3 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the following links on the SI board.

Links of the mandatory settings must be in the position indicated. Links of

the optional settings must be in one of the positions listed. The defaults are

generally recommended.

Replace the cover as detailed in “Final Reassembly” on page 63.

Table 7.3 Talk through repeater—mandatory settings

LINK Name Pins Position Function Comments

J400 Tx Key

Source 3 2-3 Talk Through Repeater

mode Receiver gate keys transmitter

J502 Tx Audio

Source 3 2-3 Talk Through Repeater

mode Transmitter audio taken from the

receiver

J503 Rx Audio

Destination 3 1-2 Talk Through Repeater

mode Received audio to the transmitter

W401

W402 TOI 9V Enable

TOI 4.5V Enable 2

2Not

fitted Tone on Idle disable Tone on idle not used in repeater

configuration

Table 7.4 Talk through repeater—optional settings

LINK Name Pins Position Function Comments

J507 Line In

Destination 31-2

2-3 Tx Line In to Aux Mic

Tx Line In to Audio Tap In Default position is 2-3

J206 Fan Control 1 3 1-2

2-3 Fan controlled by J207

Fan always on Default position is 1-2

J207 Fan Control 2 3 1-2

2-3 Fan Tx key-controlled

Fan temperature-controlled Default position is 2-3

90 Preparation for Operation TB7100 Installation and Operation Manual

Note By default the audio frequency response will be flat.

7.4.4 Applying Power

Before turning on the base station, check that:

■all looms and cables at the front and rear of the base station are fitted

correctly

■all connectors are secure

■the 20A fuse is fitted.

Turn on the power supply and check that the base station powers up

correctly:

■The power LED on the user interface lights up.

■The LCD indicates the current channel number.

7.4.5 Programming

No changes to the values programmed for line-controlled base operation are

required. See “Programming” on page 82 for details.

Note If a soft tail setting is required see later in this chapter “Soft Off

(Tx Tail Time)” on page 118.

Figure 7.4 System interface link positions

J400J500 J502J503 J501

TB7100 Installation and Operation Manual Preparation for Operation 91

7.4.6 Audio Level Adjustment

There is no audio level adjustment necessary in repeater mode. The internal

linking is designed to produce a repeater with no talk through gain. If talk

through gain is required it can be implemented by linking back the audio

using a DB25 connector on the system interface and setting the audio levels

as required, see “Alternate Talk Through Repeater Configuration” on

page 92 for a more detailed explanation.

7.4.7 Talk Through Repeater Functional Testing

The basic operation of the base station has already been tested as a line-

controlled base. This section describes the additional functional tests

required to verify that the base station is operating correctly as a repeater.

Repeater Key With the test set in duplex mode:

1. Set up the test set to measure the transmitter power and frequency

output.

2. Set the RF signal generator to the correct frequency for the receiver.

Note If subaudible signalling has been added, also modulate the carrier

with the required signal.

3. Set the RF level to -70dBm.

4. The receiver busy LED turns on and the transmitter keys up and

transmits at the programmed power level and frequency. When the

RF source is removed, the transmitter will stop transmitting.

Talk Through With the test set in duplex mode:

1. Set up the test set to measure the modulation level and frequency.

2. Set the RF signal generator to the correct frequency for the receiver.

3. Modulate the RF carrier with a 1kHz audio tone at 60% full system

deviation.

Note If subaudible signalling has been added, also modulate the carrier

with the required signal.

4. Set the RF level to –70dBm.

5. The receiver busy LED turns on and the transmitter keys up and

transmits at the programmed power level and frequency.

The transmitted signal will be the same as received. If subaudible

signalling has been enabled, the required sub-tone will also be

transmitted.

6. Ensure the deviation is at the desired level.

92 Preparation for Operation TB7100 Installation and Operation Manual

7.4.8 Alternate Talk Through Repeater Configuration

Audio Frequency

Response When a talk through repeater is created by linking the audio path using links

J502 and J503, the default frequency response is flat audio. The pre/de-

emphasis links J500 and J501 are not in the audio path and have no effect.

Repeater Talk

Through Gain When a talk through repeater is created by linking the audio path using links

J502 and J503, the repeater will have no talk through gain. If talk through

gain is required internally link the base station for line-controlled base

operation. Then externally configure it to operate as a repeater by linking

the following pins on a 25pin male D-range connector and plugging the

connector into the system connector on the rear panel of the base station.

When configured as described above:

■The base station will operate as a repeater.

■The Talk through gain can be set by adjusting the line output level and

line input sensitivity RV500 (BAL IN) and RV503 (BAL OUT) on the

rear panel.

■The pre/de emphasis links J500 and J501 can be used to set the audio

frequency response.

Pins Function

1 to 5 Rx Line Out+ to Tx Line In+

4 to 8 Rx Line Out- to Tx Line In-

14 to 15 Rx Gate to Tx Key

TB7100 Installation and Operation Manual Preparation for Operation 93

7.5 RF Modem

In RF modem mode the transmitter and receiver are connected to the serial

interface and any data on the serial interface is transmitted. Any data

received is forwarded to the PC.

7.5.1 Test Equipment Required

The following test equipment is used to setup the base station for RF

modem operation:

■TBA0STU calibration test unit (CTU) which includes the CTU adaptor

and CTU cable, or

■TBA0ST1 calibration test unit (CTU), TBB0STU-TBB CTU adaptor

(220-02068-xx) and CTU cable (219-02888-xx)

■PC, programming cables and the TB7100 programming application

■digital voltmeter

■DC power supply

■RF test set with:

■RF power meter

■modulation analyser

■RF signal generator

■sinad meter

■audio distortion meter

■audio level meter

■audio signal generator

Figure 7.5 RF modem

Serial Interface

Receiver Transmitter

RF In RF Out

Rx Data

Tx Data

94 Preparation for Operation TB7100 Installation and Operation Manual

Calibration Test Unit

(CTU) The CTU is used to configure and test the base station. The same CTU is

used for TB8000 and TB9000 base station equipment, so only some of the

features on the CTU apply to the TB7100 base station. The CTU adaptor

is plugged into the system connector of the CTU. The CTU cable is

plugged into the system connector of the base station.

For more information on the CTU refer to the TBA0STU/TBA0STP

Calibration and Test Unit Operation Manual (MBA-00013-xx).

7.5.2 Test Equipment Setup

1. Connect the PC to the programming port on the front panel of the

base station. See “Connecting to the PC” on page 105.

2. Connect the receiver N-type connector to the RF test set (signal

generator) output port.

3. Connect the transmitter N-type connector to the RF test set (power

and modulation meter) input port, check the test set is rated for the

transmit power of the base station.

4. Connect the 13.8V power supply to the DC input on the base

station, ensuring correct polarity.

7.5.3 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the following links on the SI board.

Links of the mandatory settings must be in the position indicated. Links of

the optional settings must be in one of the positions listed. The defaults are

generally recommended.

Replace the cover as detailed in “Final Reassembly” on page 63.

Table 7.5 RF modem—mandatory settings

LINK Name Pins Position Function Comments

J221 RS232 Loop

Back 3 1-2 RS-232 out data connector

J400 Tx Key

Source 3 1-2 External Tx key source Use this setting because the

transmitter will automatically key

up when there is data to send so

should not be keyed by the

receiver gate.

TB7100 Installation and Operation Manual Preparation for Operation 95

7.5.4 Applying Power

Before turning on the base station, check that:

■all looms and cables at the front and rear of the base station are fitted

correctly

■all connectors are secure

■the 20A fuse is fitted.

Turn on the power supply and check that the base station powers up

correctly:

■The power LED on the user interface lights up.

■The LCD indicates the current channel number.

Table 7.6 RF modem—optional settings

LINK Name Pins Position Function Comments

J206 Fan Control 1 3 1-2

2-3 Fan controlled by J207

Fan always on Default position is 1-2

J207 Fan Control 2 3 2-3 Fan temperature-controlled Do not use position 1-2 (Tx key-

activated fan). The transmitter will

automatically key up when there

is data to send. This will not

activate the Tx key line and

therefore will not activate the fan.

Figure 7.6 System interface link positions

J221

96 Preparation for Operation TB7100 Installation and Operation Manual

7.5.5 Programming

Please see the line-controlled base “Programming” on page 82 for details on

how to program the base station for RF modem operation.

7.5.6 Audio Level Adjustment

In this configuration the system interface connector is not used, so it is not

necessary to set the line output level or line input sensitivity.

7.5.7 Programming for FFSK Operation

To program a base station for FFSK operation:

Transmitter 1. Read the transmitter or start with a new transmitter data file.

2. Use the reset to defaults command under the file menu to ensure all

the mandatory and recommended settings are in their correct default

states.

3. Open the specifications form and select the correct RF band

4. Open the channels form summary tab. Add as many channels as are

required and for each channel enter the following:

■transmit frequency

■Tx subaudible signalling value

■power level

■bandwidth.

5. Open the channels form details tab and for each channel check the

Use channel for data check box.

6. Open the key settings form and select the required function for each

function key. For example:

■FN1 = Preset Channel

■FN2 = Preset Channel

■FN3 = Preset Channel

■FN4 = None.

7. Open the data form and in the general tab:

■In the command mode section disable all check boxes.

■In the transparent mode section select transparent mode enabled

and de-select the other check boxes.

■Set Power Up State to FFSK transparent mode.

8. Open the data form and in the serial communications tab:

■In the serial communications setup field set the FFSK transparent

TB7100 Installation and Operation Manual Preparation for Operation 97

mode baud rate to 1200, the Flow control to None and the data

port to the required data port.

■Ensure hardware flow control is set to None.

9. Open the data form RF modems tab. The THSD modem settings do

not apply and can be ignored. In the FFSK modem section set up the

following:

■Ignore CTCSS/DCS can be disabled (CTCSS/DCS is not used

in this example).

■Enable Check Packet Length.

■Disable FFSK Tone Blanking.

■FFSK Lead-In Delay default of 500ms is suitable but can be

changed.

■FFSK Lead-Out Delay default of 200ms is suitable but can be

changed.

10. Program the transmitter

Receiver 1. Read the receiver or start with a new receiver data file.

2. Use the reset to defaults command under the file menu to ensure all

the mandatory and recommended settings are in their correct default

states.

3. Open the specifications form and select the correct RF band.

4. Open the channels form summary tab. Add as many channels as are

required and for each channel enter the following:

■receive frequency

■Rx subaudible signalling value

■squelch setting

■bandwidth.

5. Open the channels form details tab and for each channel check the

use channel for data check box.

6. Open the key settings form and select the required function for each

function key. For example:

■FN1 = Preset Channel (same as transmitter)

■FN2 = Preset Channel (same as transmitter)

■FN3 = Preset Channel (same as transmitter)

■FN4 = Monitor / Squelch override

7. Open the data form and in the general tab:

■In the command mode section disable all check boxes.

■In the transparent mode section select transparent mode enabled

and de-select the other check boxes.

■Set Power Up State to FFSK transparent mode.

98 Preparation for Operation TB7100 Installation and Operation Manual

8. Open the data form and in the serial communications tab:

■In the serial communications setup field set the FFSK transparent

mode baud rate to 1200, the Flow control to None and the data

port to the required data port.

■Ensure hardware flow control is set to None.

9. Open the data form RF modems tab. The THSD modem settings do

not apply and can be ignored. In the FFSK modem section set up the

following:

■Ignore CTCSS/DCS can be disabled (CTCSS/DCS is not used

in this example).

■Enable Check Packet Length.

■Disable FFSK Tone Blanking.

■FFSK Lead-In Delay default of 500ms is suitable but can be

changed.

■FFSK Lead-Out Delay default of 200ms is suitable but can be

changed.

10. Program the receiver.

7.5.8 Programming for THSD Operation

Transmitter 1. Read the transmitter or start with a new transmitter data file.

2. Use the reset to defaults command under the file menu to ensure all

the mandatory and recommended settings are in their correct default

states.

3. Open the specifications form and select the correct RF band.

4. Open the channels form summary tab. Add as many channels as are

required and for each channel enter the following:

■transmit frequency

■Tx subaudible signalling value = Ignored in THSD Mode

■power level

■bandwidth.

5. Open the channels form details tab and for each channel check the

use channel for data check box.

6. Open the key settings form and select the required function for each

function key. For example:

■FN1 = Preset Channel

■FN2 = Preset Channel

■FN3 = Preset Channel

■FN4 = None

TB7100 Installation and Operation Manual Preparation for Operation 99

7. Open the data form and in the general tab:

■In the command mode section disable all check boxes.

■In the transparent mode section select transparent mode enabled

and THSD modem enabled and de-select the ignore escape

sequence check box.

■Set Power Up State to THSD transparent mode.

8. Open the data form and in the serial communications tab:

■In the serial communications setup field set the THSD transparent

mode baud rate to 9600, the Flow control to None and the data

port to the required data port.

■Ensure hardware flow control is set to None.

9. Open the data form RF modems tab. The FFSK modem settings do

not apply and can be ignored. In the THSD modem section set up

the following:

■Wide band modem enabled

■Layer 2 Protocol enabled

■Forward Error Correction disabled

■THSD Lead-in Delay default of 30ms is acceptable.

10. Program the transmitter.

Receiver 1. Read the receiver or start with a new receiver data file.

2. Use the reset to defaults command under the file menu to ensure all

the mandatory and recommended settings are in their correct default

states.

3. Open the specifications form and select the correct RF band.

4. Open the channels form summary tab. Add as many channels as are

required and for each channel enter the following:

■receive frequency

■Rx subaudible signalling value = Ignored in THSD Mode

■squelch setting

■bandwidth.

5. Open the channels form details tab and for each channel check the

use channel for data check box.

6. Open the key settings form and select the required function for each

function key. For example:

■FN1 = Preset Channel (same as transmitter)

■FN2 = Preset Channel (same as transmitter)

■FN3 = Preset Channel (same as transmitter)

■FN4 = Monitor / Squelch override.

100 Preparation for Operation TB7100 Installation and Operation Manual

7. Open the data form and in the general tab:

■In the command mode section disable all check boxes.

■In the transparent mode section select transparent mode enabled

and THSD modem enabled and de-select the ignore escape

sequence check box.

■Set Power Up State to THSD transparent mode.

8. Open the data form and in the serial communications tab:

■In the serial communications setup field set the THSD transparent

mode baud rate to 9600, the Flow control to None and the data

port to the required data port.

■Ensure hardware flow control is set to None.

9. Open the data form RF modems tab. The FFSK modem settings do

not apply and can be ignored. In the THSD modem section set up

the following:

■Wide band modem enabled

■Layer 2 Protocol enabled

■Forward Error Correction disabled

■THSD Lead-In Delay default of 30ms is acceptable.

10. Program the receiver.

7.5.9 Verification

In order to verify the correct operation as an RF modem a basic functional

test can be carried out by sending data between the TB7100 base station and

a TM8000 mobile radio.

The following equipment will be required:

■DC power supply

■antenna for receiver input

■dummy load for transmitter output

■a PC running the terminal application connected to the serial data port

on the base station with a 9-pin serial cable

■a second PC running the terminal application connected to a TM8000

mobile radio which has been programmed to send and receive the

required data modulation (FFSK or THSD).

The test setup is shown in “RF modem test setup” on page 101.

TB7100 Installation and Operation Manual Preparation for Operation 101

The correct operation of the base station as an RF modem can be verified

by transferring text files between the two PCs.

7.6 Data Repeater

In data repeater mode the base station will transmit all valid received data.

Figure 7.7 RF modem test setup

Receiver

Transmitter System Interface Terminal

Application

Dummy Load

Antenna

Terminal

Application

TM8000 Mobile

Radio

PROG/MIC Tx/Rx CHANNEL POWER Tx BUSY F1 F3 F4F2 VOLUME

Figure 7.8 Data repeater

Receiver Transmitter

System Interface

RF In RF Out

Rx Data

Tx Data

102 Preparation for Operation TB7100 Installation and Operation Manual

7.6.1 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the following links on the SI board.

Links of the mandatory settings must be in the position indicated. Links of

the optional settings must be in one of the positions listed. The defaults are

generally recommended.

Replace the cover as detailed in “Final Reassembly” on page 63.

Table 7.7 Data repeater—mandatory settings

LINK Name Pins Position Function Comments

J221 RS232 Loop

Back 3 2-3 RS-232 looped back

J400 Tx Key

Source 3 1-2 External Tx key source Use this setting because the

transmitter will automatically key

up when there is data to send so

should not be keyed by the

receiver gate.

Table 7.8 Data repeater—optional settings

LINK Name Pins Position Function Comments

J206 Fan Control 1 3 1-2

2-3 Fan controlled by J207

Fan always on Default position is 1-2

J207 Fan Control 2 3 2-3 Fan temperature-controlled Do not use position 1-2 (Tx key-

activated fan). The transmitter will

automatically key up when there

is data to send. This will not

activate the Tx key line and

therefore will not activate the fan.

TB7100 Installation and Operation Manual Preparation for Operation 103

7.6.2 Applying Power

Before turning on the base station, check that:

■all looms and cables at the front and rear of the base station are fitted

correctly

■all connectors are secure

■the 20A fuse is fitted.

Turn on the power supply and check that the base station powers up

correctly:

■The power LED on the user interface lights up.

■The LCD indicates the current channel number.

7.6.3 Programming

Please see the line-controlled base “Programming” on page 82 for details on

how to program the base station for RF modem operation.

7.6.4 Audio Level Adjustment

In this configuration the system interface connector is not used, so it is not

necessary to set the line level or line Sensitivity.

Figure 7.9 System interface link positions

J400J500 J502J503 J501J221

104 Preparation for Operation TB7100 Installation and Operation Manual

7.6.5 Data Repeater Functional Testing

In order to verify the correct operation as a data repeater a basic functional

test can be carried out. This involves sending data from one TM8000 mobile

radio to another TM8000 through the TB7100 base station.

The following equipment will be required:

■DC power supply

■antenna for receiver input

■dummy load for transmitter output

■two TM8000 mobile radios capable of sending and receiving the

required data format.

■two PCs running the terminal application.

■programming cables for the TM8000 mobile radios.

The test set-up is shown in Figure 7.10 on page 104.

The correct operation of the base station as an RF modem can be verified

by transferring text files between the two PCs.

7.7 TaitNet Trunking

The TB7100 base station can be configured to work with a T1810 or T1711

to form part of a TaitNet MPT1327 Trunking System.

For more information, refer to the technical note TN-1033-AN “Using the

Tait TB7100 in TaitNet MPT1327 Trunked Networks” available from

http://support.taitworld.com.

Figure 7.10 Data repeater test setup

Receiver

Transmitter System Interface

Dummy Load

Antenna

TM8000 Mobile

Radio

PROG/MIC Tx/Rx CHANNEL POWER Tx BUSY F1 F3 F4F2 VOLUME

TM8000 Mobile

Radio

Terminal

Application Terminal

Application

TB7100 Installation and Operation Manual Preparation for Operation 105

7.8 Programmable Features

The programmable features are applied to the transmitter and receiver

modules by using the TB7100 programming application.

7.8.1 Connecting to the PC

1. Plug the TPA-SV-006 or T2000-A19 programming lead into the

RS-232 serial port on a PC.

Note A USB-to-RS-232 adaptor can be used if the PC does not have a

built in serial port.

2. Connect the TMAA20-04 adaptor cable (RJ12 socket to RJ45 plug)

to the RJ12 plug on the TPA-SV-006 or T2000-A19 programming

lead.

3. Plug the RJ45 plug on the TMAA20-04 adaptor cable into the

PROG/MIC connector located on the front panel of the base station.

Select whether the TB7100 programming application communicates with

the transmitter or receiver module by using the receiver/transmitter

programming switch located on the user interface next to the PROG/MIC

connector.

7.8.2 TB7100 Programming Application

The TB7100 programming application allows the configuration parameters

of receiver or transmitter to be read out of a module, edited and written back

into the module. It is also possible the save the data files, so if a module ever

needs to be replaced, the previously saved data file can be programmed into

the new module. The model toolbar, indicates whether the data file is for a

receiver or transmitter module.

Appearance The TB7100 programming application has been optimised for mouse

navigation. Most features can be easily enabled and configured using a check

box or drop down list and the frequencies for each channel are simply typed

into a table.

106 Preparation for Operation TB7100 Installation and Operation Manual

Separate Data Files The base station has separate transmitter and receiver modules, which are

independently programmed with their required settings. This means that the

base station will have two data files, one for the transmitter and one for the

receiver.

New Data Files The reset to defaults feature in the TB7100 programming application makes

it easy to create a new data file. The required module type (receiver or

transmitter) is selected by pressing the appropriate button on the radio

model toolbar. The reset to defaults feature under the file menu is used to

reset all the settings to their default states. This ensures all the mandatory and

recommended settings are correct before starting to create a new data file.

The customer-specific settings for the current application are entered. reset

to defaults only affects the currently active radio model, so the correct radio

model must be selected first. If “reset to defaults” is greyed out, then the

settings are already in their default states.

Existing Data Files An existing data file can be read out of a transmitter or receiver module or

loaded from file. The radio model toolbar in the TB7100 programming

application will automatically update when a data file is loaded or read out

of a module to indicate whether the file is for a receiver or transmitter

module. The file can then be edited and saved or programmed back into the

module.

Note It is possible to read the receiver module and then the transmitter

module and have both data files loaded at the same time. The radio

model toolbar can then be used to toggle between the two data

files.When editing is complete, it is important to ensure the

receiver/transmitter programming switch position matches the

currently active data file before programming the module.

Feature Function

Menus Located along the top of the screen, these allow the user to

perform functions such as opening or saving data files, and

reading or programming the modules.

Toolbar Located just below the menu bar, the toolbar allows easy

access to the most commonly used menu items.

Radio Model Toolbar Located just below the toolbar, this indicates whether a newly

loaded file type is for a receiver or transmitter module. It also

allows the required module type to be selected when a new

data file is being created.

Forms Tree Located on the left side of the screen, the Forms Tree lists all

the forms that are available for editing.

Forms Displayed beside the Forms Tree is the Active Form.

The TB7100 programming application is made up of several

Forms (a page of parameters). All the configuration

parameters related to a particular feature are grouped

together in one form. Each form is intuitively labelled and

easily accessible from a Forms Tree

TB7100 Installation and Operation Manual Preparation for Operation 107

7.8.3 Mandatory Settings

The mandatory settings must not be changed from their default states or the

base station will not operate correctly. The mandatory settings in the

receiver module are not the same as those in the transmitter module.

The reset to defaults feature in the TB7100 programming application will

ensure all mandatory settings are correct for the selected module type.

The mandatory settings are not locked out. It is possible to change a

mandatory setting from its required state.

Receiver Mandatory

Settings The mandatory settings for the receiver are shown below. If these change,

the receiver will no longer operate.

Form Tab Item Name Setting

Data General Output SDMs Automatically Disabled

Data Serial Communications Data_Port AUX

Data Serial Communications XON_Character 11

Data Serial Communications XOFF_Character 13

Basic Settings Basic Network Settings TX Timer Duration 1

Basic Settings Basic Network Settings TX Lockout Duration 250

Basic Settings Sub Audible Signalling CTCSS Lead Out Delay 0

Basic Settings Sub Audible Signalling Invert Tx DCS Disabled

Basic Settings Sub Audible Signalling DCS Lead Out Delay 0

Channels Detailed TX_Frequency 000.000000

Channels Detailed TX Sig none

Channels Detailed Power off

UI Preferences User Interface Confidence Tones Disabled

UI Preferences User Interface Silent Mode Disabled

UI Preferences Audible Indicators Enabled All Disabled

Startup Startup Power On Mode Power on

Startup Startup Reset On Error Enabled

PTT MIC PTT PTT Priority high

PTT MIC PTT Audio Source CH MIC

PTT External PTT 1 PTT Transmission Type none

PTT External PTT 1 PTT Priority medium

PTT External PTT 1 Audio Source CH MIC

108 Preparation for Operation TB7100 Installation and Operation Manual

Transmitter

Mandatory Settings The mandatory settings for the transmitter are shown below, if these change

the transmitter will no longer operate.

7.8.4 User-defined Settings

The user-defined settings are specific to the customers application. These are

the only settings that need to be changed when configuring a base station

for operation. To set up a basic voice repeater or base station only the

channel information needs to be entered:

■frequency

■power level

■bandwidth

■squelch threshold

■sub-audible signalling.

If the system is to be used for data then the data parameters also need to be

set correctly:

■baud rate

■flow control

■error correction.

Form Tab Item Name Setting

Data General Output SDMs Automatically Disabled

Data Serial Communications Data_Port AUX

Data Serial Communications XON_Character 11

Data Serial Communications XOFF_Character 13

Basic Settings Sub Audible Signalling Invert Rx DCS Disabled

Channels Detailed RX_Frequency 000.000000

Channels Detailed RX Sig none

Channels Detailed Squelch hard

UI Preferences User Interface Confidence Tones Disabled

UI Preferences User Interface Silent Mode Disabled

UI Preferences Audible Indicators Enabled All Disabled

Startup Startup Power On Mode Power on

Startup Startup Reset On Error Enabled

PTT MIC PTT PTT Priority high

PTT MIC PTT Audio Source CH Mic

PTT External PTT 1 PTT Priority medium

PTT External PTT 1 Audio Source Audio Tap In

TB7100 Installation and Operation Manual Preparation for Operation 109

Receiver User-

defined Settings The user-defined settings for the receiver are shown below. The cells in grey

denote that the value should stay as detailed because of other constraining

settings.

Form Tab Item Name Value Range Recommended

Data General Transparent Mode

Enabled Enabled / Disabled Enabled

Data General THSD_Modem_

Enabled Enabled / Disabled Enabled

Data Serial Communications FFSK_Transparent_

Mode_Baudrate 1200, 2400, 4800, 9600,

14400, 19200, 28800 19200

Data Serial Communications THSD_Transparent_

Mode_Baudrate 1200, 2400, 4800, 9600,

14400, 19200, 28800 19200

Basic Settings Basic Network Settings Squelch Detect Type Noise level, Signal strength Noise Level

Basic Settings Sub Audible Signalling Invert Rx DCS Enabled, Disabled Disabled

Channels Detailed RX_Frequency 000.000000…

999.999999 000.000000

Channels Detailed RX Sig CTCSS tone OR DCS tone none

Channels Detailed Network 1…4 1

Channels Detailed Bandwidth 12.5, 20, 25 12.5

Channels Detailed Squelch country, city, hard city

Channels Detailed Use_Channel_For_

Data Enabled, Disabled Disabled

Key Settings Key 1 Key Action see Key Action type none

Key Settings Key 2 Key Action see Key Action type none

Key Settings Key 3 Key Action see Key Action type none

Key Settings Key 4 Key Action see Key Action type none

Preferences User Interface Backlight Mode off, activity, continuous off

Preferences User Interface Backlight Duration 0…15 5

PTT MIC PTT PTT Transmission Type none, voice, data none

110 Preparation for Operation TB7100 Installation and Operation Manual

Transmitter User-

defined Settings The user-defined settings for the transmitter are shown below. The cells in

grey denote that the value should stay as detailed because of other

constraining settings

Form Tab Item Name Value Range Tx

Data General Transparent Mode

Enabled Enabled / Disabled Enabled

Data General THSD_Modem_

Enabled Enabled / Disabled Enabled

Data Serial Communications FFSK_Transparent_

Mode_Baudrate 1200, 2400, 4800, 9600,

14400, 19200, 28800 19200

Data Serial Communications THSD_Transparent_

Mode_Baudrate 1200, 2400, 4800, 9600,

14400, 19200, 28800 19200

Basic Settings Basic Network Settings TX Timer Duration 0…250 0

Basic Settings Basic Network Settings TX Lockout Duration 0…250 0

Basic Settings Sub Audible Signalling CTCSS Lead Out Delay 0…1000 0

Basic Settings Sub Audible Signalling Invert Tx DCS Enabled, Disabled Disabled

Basic Settings Sub Audible Signalling DCS Lead Out Delay 0…1000 0

Channels Detailed TX_Frequency 000.000000…

999.999999 See Note 1

Channels Detailed TX Sig CTCSS tone OR DCS tone none

Channels Detailed Power off, very low, low,

medium, high high

Channels Detailed Network 1…4 1

Channels Detailed Bandwidth 12.5, 20, 25 12.5

Channels Detailed Use_Channel_For_

Data Enabled, Disabled Disabled

Key Settings Key 1 Key Action see Key Action type none

Key Settings Key 2 Key Action see Key Action type none

Key Settings Key 3 Key Action see Key Action type none

Key Settings Key 4 Key Action see Key Action type none

Preferences User Interface Backlight Mode off, activity, continuous off

Preferences User Interface Backlight Duration 0…15 5

PTT MIC PTT PTT Transmission Type none, voice, data Voice

PTT External PTT 1 PTT Transmission Type none, voice, data Voice

TB7100 Installation and Operation Manual Preparation for Operation 111

Receiver

Digital IO The user-defined settings for the receiver digital IO are shown below.

The cells in grey denote mandatory settings.

Transmitter

Digital IO The user-defined settings for the transmitter digital IO are shown below.

The cells in grey denote mandatory settings.

Receiver Audio The user-defined settings for the receiver audio IO are shown below.

The cells in grey denote mandatory settings.

Pin Direction Label Action Active Debounce Signal

State Mirrored

AUX_GPI1 Input BIN_0 BCD_Pin_0 Low 10 None None

AUX_GPI2 Input BIN_1 BCD_Pin_1 Low 10 None None

AUX_GPI3 Input BIN_2 BCD_Pin_2 Low 10 None None

AUX_GPIO4 Input BIN_4 BCD_Pin_3 Low 10 None None

AUX_GPIO5 None RX_DO_1 No Action Low None None None

AUX_GPIO6 None RX_DO_2 No Action Low None None None

AUX_GPIO7 Output RXGATE Busy Status High None None None

Pin Direction Label Action Active Debounce Signal

State Mirrored

AUX_GPI1 Input BIN_0 BCD_Pin_0 Low 10 None None

AUX_GPI2 Input BIN_1 BCD_Pin_1 Low 10 None None

AUX_GPI3 Input BIN_2 BCD_Pin_2 Low 10 None None

AUX_GPIO4 Input BIN_4 BCD_Pin_3 Low 10 None None

AUX_GPIO5 None TX_DO_1 No Action Low None None None

AUX_GPIO6 None TX_DO_2 No Action Low None None None

AUX_GPIO7 Input TXKEY External PTT

1High 2None None

Rx/PTT Type Tap In Tap In Type Tap In

Unmute Tap Out Tap Out

Type Tap Out Unmute

Rx None A-Bypass In On PTT R4 D-Split Busy detect +

Subaud

Mic PTT None A-Bypass In On PTT None C-Bypass Out On PTT

EPTT1 None A-Bypass In On PTT None C-Bypass Out On PTT

EPTT2 None A-Bypass In On PTT None C-Bypass Out On PTT

112 Preparation for Operation TB7100 Installation and Operation Manual

Transmitter Audio The user-defined settings for the transmitter audio IO are shown below.

The cells in grey denote mandatory settings.

7.8.5 Recommended Settings

Recommended settings provide system designers with an extra level of

flexibility to meet a specific operational requirement. In general,

recommended settings should not be changed from the recommended

default value. However unlike mandatory settings, the user is permitted to

make changes, providing they verify the correct operation of the enabled or

modified feature.

No guarantee is given that a feature will work if the recommended settings

disable the feature, or if a recommended value is changed.

Although the individual modules are capable of these features, they cannot

be fully supported by the base station because of its two-module

configuration. A few examples of features that are not fully supported by the

base station are:

■selcall

■two tone

■emergency mode

■scanning

■encryption (voice inversion).

The reset to defaults feature in the TB7100 programming application will

ensure all recommended settings are in their recommended default state.

Recommended

Settings Examples To explain recommended settings more clearly, two Selcall examples are

given below. The first example shows that, although Selcall is not a

supported feature of the base station, systems designers have much more

flexibility to meet a customer’s requirement.

Example One A customer has a requirement to remotely turn on external lighting at the

base station site.

Although Selcall is not a supported feature of the base station, it is likely that

enabling Selcall in the receiver could meet this customer’s requirement.

With Selcall enabled, a control status could be programmed to turn on a

Rx/PTT Type Tap In Tap In Type Tap In

Unmute Tap Out Tap Out

Type Tap Out Unmute

Rx None A-Bypass In On PTT None D-Split On PTT

Mic PTT None A-Bypass In On PTT None C-Bypass Out On PTT

EPTT1 T8 A-Bypass In On PTT None C-Bypass Out On PTT

EPTT2 None A-Bypass In On PTT None C-Bypass Out On PTT

TB7100 Installation and Operation Manual Preparation for Operation 113

Programmable I/O line. This line could be connected to the lighting

control circuit at the site via the system interface connector.

Example Two The customer also wants an acknowledgement sent back to confirm that the

command to turn on the lights was received.

At first the solution would appear to be to enable Selcall auto

acknowledgments. However this would not work, because the base station

has separate receiver and transmitter modules. The receiver module will

decode the selcall and enable the I/O line, but has no method of informing

the transmitter to send back an acknowledgment. In fact the receiver

module would attempt to transmit the acknowledgment itself, but would be

inhibited by other mandatory settings.

7.8.6 Function Keys

The base station also has four user-defined function keys on the user

interface, and programmable digital input and output lines on the system

connector.

The tables below list the options that can be assigned to the function keys

and the digital input and output lines. The grey cells can be programmed

but are not recommended (see “Recommended Settings” on page 112).

Function Key Options

None Monitor / Squelch Override

Audible Indicators Volume Network Preset Calls

Action Digital Output Line Nuisance Delete

Backlighting Timer Phone Patch Call Request / Release

Backlighting Toggle Preset Channel

Backlighting Timer / Toggle Public Address

Call Cleardown Quiet Operation

Channel Preset Call Repeater Access Tone Tx

Emergency Mode Repeater Talkaround

Encryption Reset Monitor

Group Scanning Activity Reset Monitor / Call Cleardown

Ignore Two-Tone Silent Operation

Keypress Tones Toggle Single In-Band Tone

Keypress Tones Volume Squelch Override

Low Power Transmit Scanning / Nuisance Delete

Monitor

114 Preparation for Operation TB7100 Installation and Operation Manual

Digital Input Line Actions

No Action Preset Channel

Toggle Stand-by Mode Mute External Audio Input

Power Sense (Ignition) Mute Audio Output Path

Enter Emergency Mode Unmute Audio Output Path

Send Channel Preset Call Send Mic Audio To Spkr

Send Network Preset Call 1 Force Audio PA On

External PTT 1 and 2 Force Audio PA Off

Inhibit PTT Simulate F1 to F4 Key

Toggle Tx RF Inhibit Toggle F1 to F4 Key LED

Decrement Channel Toggle Alarm Mode

Increment Channel Activate THSD Modem

Home Channel RTS Control (DCE)

BCD Pin 0 to 4

Digital Output Line Actions

No Action Signalling Audio Mute Status

Busy Status SIBT Received

Radio Transmission Status Monitor Status

Channel Lock Status Hookswitch Status

Reflect PTT Status Call Setup Status

External Alert 1 and 2 Control Status Rx (Line 1 to 3)

Public Address Status Radio Stunned

Serial Data Tx In Progress F1 to F4 Key Status

Reflect PTT Inhibit Status FFSK Data Received Status

Reflect THSD Modem Status CTS Control (DCE)

TB7100 Installation and Operation Manual Preparation for Operation 115

7.9 Additional Settings

The additional link settings control the following functions:

■subaudible signalling

■CTCSS (continuous tone controlled squelch system)

■DCS (digital coded squelch)

■soft off (tx tail time)

■tone on idle

■fan operation

■channel ID

■relay polarity

■channel increment and decrement by function buttons

■CWID (carrier wave identification).

7.10 Adding Subaudible Signalling

The base station is able to decode one CTCSS or DCS tone per channel. It

can also generate one CTCSS or DCS tone per channel. The generated tone

can be the same as the received tone or can be a different tone.

7.10.1 Enabling Subaudible Signalling

Transmitter Module 1. Read the data file out of the transmitter module.

Figure 7.11 System interface link positions

J206

RV200

J207W401RV401W402J401W302

W300

W301

RV400 J222

116 Preparation for Operation TB7100 Installation and Operation Manual

2. Open the channels form and select the required tone in the Tx Sig

column.

3. Open the Networks > Basic Settings > Subaudible Signalling tab and

configure the subaudible signalling settings (the defaults are suitable

for most applications).

4. Program the new settings into the transmitter.

Receiver Module 1. Read the data file out of the receiver module.

2. Open the channels table and select the required tone in the Rx Sig

column.

3. Open the Networks > Basic Settings > Subaudible Signalling tab and

configure the subaudible signalling settings (the defaults are suitable

for most applications).

4. The Rx tap out point in the receiver (Programmable I/O audio tab)

must be changed to R5. This means that a incoming tone/code is

filtered out by the receiver.

5. Program the new settings into the receiver.

7.10.2 Testing Subaudible Signalling

Before carrying out these tests, the base station must be configured as a line-

controlled base. It must also be connected to the test equipment as described

in “Test Equipment Setup” on page 79.

Tx Subaudible

Signalling Deviation 1. Set up the test set to measure the modulation level and frequency.

2. Ensure the test set audio output is turned off, or disconnect the CTU

audio input from the test set.

3. Activate the Tx Key switch on the CTU.

4. Verify that the measured frequency and deviation of the CTCSS

match the programmed settings.

Note If the measured value does not agree with the programmed set-

tings, the transmitter module is either faulty or needs recalibrating.

Rx Subaudible

Signalling Decode 1. Connect the balanced audio output from the CTU to the audio input

port on the test set.

2. Set up the test set to measure the audio level and distortion.

3. Set the RF signal generator to the correct RF frequency, modulated

with a 1kHz audio tone at 60% of full system deviation.

TB7100 Installation and Operation Manual Preparation for Operation 117

4. Set the RF output level to -70dBm.

5. Verify that the busy LED on the front panel of the base station turns

on but the Rx gate LED on the CTU does not turn on, and no audio

output is detected from the balanced line output.

6. Modulate the carrier with the required subaudible signalling.

7. Verify that the Rx gate LED on the CTU turns on, and that the 1kHz

audio tone is detected by the test set, and that the measured distortion

level is within the receiver specifications.

8. Turn off the subaudible signal and check that the audio output mutes

again.

Note If high distortion is measured, it is likely that the subaudible signal

is not being filtered out. Verify that the receiver is programmed

with the correct audio tap out point.

7.10.3 Multiple Subaudible Tones

The base station cannot decode multiple subaudible tones on a single

channel. This can be overcome by two methods:

Method 1 1. Third-party equipment is available that can be connected to the base

station to perform the decoding and regeneration of multiple tones.

2. The base station repeater can be configured to simply pass through

any subaudible tone.

Method 2 1. The receiver must not be programmed with any subaudible tones in

the channel table.

2. The Rx tap out point in the receiver (Programmable I/O audio tab)

must be left as the default value of R4. This means that a incoming

tone/code is not filtered out by the receiver.

3. The transmitter must be programmed not to generate any subaudible

tones.

4. The Tx Tap In point in the transmitter (Programmable I/O audio

tab) must be left as the default value of T8. This means that a

incoming tone/code is not filtered out by the transmitter and will be

re-transmitted.

Potential Problems 1. The Rx gate may close before end of reverse tone burst (RTB).

This means the re-transmitted RTB may be shorter than incoming

RTB. A Tx tail (soft off) should be added to overcome this.

2. There is no security for repeaters, as any on-frequency transmission

will be repeated, even if it has no subaudible tone.

118 Preparation for Operation TB7100 Installation and Operation Manual

7.11 Soft Off (Tx Tail Time)

If subaudible signalling is used, a Tx tail time can be added using the

Networks > Basic Settings > Subaudible Signalling tab. A lead out delay can

be entered in the appropriate field.

7.11.1 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the jumper positions on the system interface

to match the table below. Replace the cover as detailed in “Final

Reassembly” on page 63. Refer to Figure 7.11 on page 115 for the link

location.

Note When link W302 is fitted, resistor R300 must be fitted.

However, if subaudible signalling is not used, adding a lead out delay will

have no effect. If soft off operation is still required, a Tx tail time can be

created by:

1. Linking AUX_GPIO6 and AUX_GPIO7 of the transmitter with link

W302 on the system interface as above.

2. Adding the following to the default Tx configuration:

■AUX_GPIO6 >Direction = input

■AUX_GPIO6 >Action = External PTT 2

■AUX_GPIO6 >Active = High

■AUX_GPIO6 >Debounce = 200 (or smaller if desired)

■External PTT (2) > Transmission Type = None.

Note A maximum of 200 ms tail time can be achieved using this

method.

7.12 Tone On Idle (TOI)

The tone on idle provides a tone that can be used for indicating when the

base station is not transmitting or receiving. The links to enable or disable

the tone on idle are shown in the table below. Both links must be in for the

TOI to work.

Table 7.9 Soft off—link settings

LINK Name Pins Position Function Comments

W302 TX_Key to

TX_GPIO6 link 2 Fitted

Not fitted When fitted this allows two

external PTT to control the

transmitter; used for soft

off mode

Default is fitted

TB7100 Installation and Operation Manual Preparation for Operation 119

7.12.1 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the jumper positions on the system interface

to match the table below. Replace the cover as detailed in “Final

Reassembly” on page 63. Refer to Figure 7.11 on page 115 for the link

location.

The potentiometers for the tone on idle adjustments shown in the table

below can be found on the system interface module. Refer to Figure 7.11

on page 115 for the potentiometer location.

Table 7.10 Ton on idle (TOI)—link settings

LINK Name Pins Position Function Comments

W401 TOI 9V Enable 2 Fitted

Not fitted Tone on Idle enable

Tone on Idle disable Default is fitted

W402 TOI 4.5V Enable 2 Fitted

Not fitted

Tone on Idle oscillator

enable

Tone on Idle oscillator

disable

Default is fitted

Potentiometer Function

RV400 Frequency adjust

RV401 level adjust

120 Preparation for Operation TB7100 Installation and Operation Manual

7.13 Fan Operation

The fans can be made to operate in three modes:

■continuous

■on when base station transmits

■on at a set temperature.

The fan operation can be set as shown in the table below.

7.13.1 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the jumper positions on the system interface

to match the table below. Replace the cover as detailed in “Final

Reassembly” on page 63. Refer to Figure 7.11 on page 115 for the link

location.

Table 7.11 Fan operation—link settings

LINK Name Pins Position Function Comments

J206 Fan Control 1 3 1-2

2-3 Fan controlled by J207

Fan always on Default position is 1-2

J207 Fan Control 2 3 1-2

2-3 Fan Tx key-controlled

Fan temperature-controlled Default position is 2-3

Figure 7.12 System interface link positions

J400J500 J502J503 J501J221

TB7100 Installation and Operation Manual Preparation for Operation 121

The temperature threshold is set at the factory to 40°C. The potentiometer

and test point to adjust the temperature threshold can be found on the

system interface module. Refer to Figure 7.11 on page 115 for the location.

When adjusting the temperature threshold the fans must be off.

The temperature threshold to voltage relationship is shown in Figure 7.13

on page 121.

Important When using THSD and the user interface PTT, the fan set-

ting should be temperature controlled or always on. This is

because the user interface PTT line does not toggle the

TX-key line on the system interface and the THSD is only

on for short burst of time never allowing the fan time to

spin up.

Designator Function

RV200 temperature threshold adjust

J222 test point for temperature threshold

Figure 7.13 temperature threshold to voltage relationship

0.92 0.98 1.04 1.10 1.16 1.22 1.28 1.34 1.40 1.46 1.52

Voltage

Temperature

104

122

140

158

176

194

Fahrenheit

Celsius

122 Preparation for Operation TB7100 Installation and Operation Manual

7.14 Channel ID

Channel ID can be enabled using the links as below.

7.14.1 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the jumper positions on the system interface

to match the table below. Replace the cover as detailed in “Final

Reassembly” on page 63. Refer to Figure 7.11 on page 115 for the link

location.

Note When link W300 is fitted, resistor R304 must be fitted.

When link W301 is fitted, resistor R302 must be fitted.

When Tx/Rx digital input 1-4 are used for channel selection only 16 binary

or 10 BCD channels are available.

When Tx/Rx digital input 1-4 and another line, made from the shorting of

Tx digital in/out 1 and Rx digital in/out 1 on the system interface

connecter are used then a total of 32 binary or 20 BCD channels are

selectable. Requires link W300 to be fitted.

Table 7.12 Channel ID—link settings

LINK Name Pins Position Function Comments

W300 2 Fitted

Not fitted When fitted this allows

both transmit and receive

modules to be controlled by

the same external digital IO

lines, used for BCD; used

with W301

Default is fitted

W301 2 Fitted

Not fitted When fitted this allows

both transmit and receive

modules to be controlled by

the same external digital IO

lines; used with W300

Default is fitted

TB7100 Installation and Operation Manual Preparation for Operation 123

7.15 Relay Polarity

Relay operation can be configured to be energised when the receiver gate

is active or inactive.

7.15.1 Link Settings

Remove the cover as detailed in “Removing the Base Station and Opening

the Tray” on page 54 and set the jumper positions on the system interface

to match the table below. Replace the cover as detailed in “Final

Reassembly” on page 63. Refer to Figure 7.11 on page 115 for the link

location.

7.16 Channel Increment and Decrement by Function

Keys

Function button one and two can be configured to increment and

decrement the channels. This requires two links fitted to the rear of the user

interface board, this will hard wire the F1 and F2 buttons to the

increment/decrement function. It is recommended F1 & F2 have no other

programmed action.

This option will allow all 99 channels to be selected from the function

buttons.

For more information, refer to the technical note TN-1032-AN

“Implementing Channel Increment and Decrement on the TB7100”

available from http://support.taitworld.com.

Table 7.13 Relay polarity—link settings

LINK Name Pins Position Function Comments

W401 Relay Polarity

Control 31-2

2-3

Energised for receiver active

gate

Energised for receiver

inactive gate

Default is 1-2

124 Preparation for Operation TB7100 Installation and Operation Manual

7.17 Carrier Wave Identification (CWID)

CWID is a morse identification feature that can be setup using the TB7100

programming application.

7.17.1 Station ID

Can contain a preprogrammed station ID of up to 16 characters in length.

The user may wish to prefix the letters DE before the message, meaning

“from”.

7.17.2 Station ID 2/Message

Can contain a second preprogrammed station ID or a message of up to 130

characters.

7.17.3 Tone Frequency

The Morse tone frequency is programmable from 1Hz to 3000Hz in one

cycle increments. FCC rules state that the frequency shall be 800Hz to

1200Hz.

7.17.4 ID Repeat Time

A programmable repeat time from 1 to 99 minutes. This allows the user to

program how often the ID or message is sent. Setting the output control to

“After PTT” will cause the ID message to be sent following the last

activation of the COR/COS/CTCSS, Inhibit or PTT inputs, provided the

time is met that is programmed in this register.

7.17.5 Speed (Words per Minute)

The speed is programmable from 1 to 99 words per minute (WPM).

7.17.6 Wait Period after Loss of COR/COS/CTCSS Input Before IDing

This register allows from 1 to 99 seconds of delay before the Morse ID will

transmit after COR/COS/CTCSS loss assuming the repeat interval in ID

Repeat Time has expired.

7.17.7 Transmit Key-Up Delay

Programmable key-up delay from 0.0 to 9.9 seconds. This allows for a front

porch delay time before the ID or message is sent. This gives receiving units

TB7100 Installation and Operation Manual Preparation for Operation 125

with CTCSS decoders time to un-squelch before any Morse code is

transmitted.

7.17.8 Transmit Time Out Time

If programmed to 0 this function is off. Programming from 1 to 999 seconds

will set the repeater to drop out after the number of seconds programmed

in this register. The time out timer is designed to limit conversation length.

7.17.9 Transmit PTT Drop Out Time

This register programs how many seconds the repeater’s transmitter will stay

keyed after loss of COR/COS/CTCSS input. Normally this is programmed

for 2 to 7 seconds. After PTT In is detected, the ID-1 will turn on its PTT

out, as long as the PTT In remains active. After loss of the PTT In, the PTT

out will remain active for the programmed period of time before dropping,

thus allowing another unit to answer before the repeater drops. The ID-1

must be installed in series with the PTT line (i.e. ID-1 installed at break in

station PTT line) for this function to operate.

7.17.10 Output Control

Setting the output Control to “After PTT” will cause the ID message to be

sent following the last activation of the COR/COS/CTCSS, inhibit or

PTT inputs, provided the time is met that is programmed in the register ID

repeat time. setting the output control to “continuous” will cause the ID or

message to be sent at the expiration of a period equal to the delay time. For

example, if register ID repeat time is programmed as 10, the ID or message

will be sent every 10 minutes. This will occur during a conversation if one

is in progress when the timer goes off.

126 Preparation for Operation TB7100 Installation and Operation Manual

TB7100 Installation and Operation Manual Maintenance Guide 127

8 Maintenance Guide

The base station is designed to be very reliable and should require little

maintenance. However, performing regular checks will prolong the life of

the equipment and prevent problems from happening.

It is beyond the scope of this manual to list every check that you should

perform on your base station. The type and frequency of maintenance

checks will depend on the location and type of your system. The checks and

procedures listed below can be used as a starting point for your maintenance

schedule.

Performance Checks We suggest you monitor the following operational parameters:

■VSWR

■DC input voltage, especially on transmit

■receiver sensitivity

■the setting of the receiver gate opening

■transmit deviation

These basic checks will provide an overview of how well your base station

is operating.

Receiver There are no special maintenance requirements for the receiver.

Transmitter There are no special maintenance requirements for the transmitter.

System Interface There are no special maintenance requirements for the System interface.

Ventilation The base station has been designed to have a front-to-back cooling airflow.

We strongly recommend that you periodically check and maintain the

ventilation requirements described in “Ventilation” on page 46 to ensure a

long life and trouble-free operation for your base station.

Cooling Fans The cooling fans have a long service life and have no special maintenance

requirements.

Battery If you are using battery, you should check the batteries regularly in

accordance with the manufacturer’s recommendations.

128 Maintenance Guide TB7100 Installation and Operation Manual

TB7100 Installation and Operation Manual Glossary 129

Glossary

This glossary contains an alphabetical list of terms and abbreviations related

to the TB7100 base station. For information about trunking, mobile, or

portable terms, consult the glossary provided with the relevant

documentation.

accessory An accessory is an ancillary device fitted externally to a base station, such as

an external microphone.

active Digital outputs are active when the base station pulls their voltage low and

current is flowing. Digital inputs are active when external equipment is

pulling them to ground. All base station digital outputs are open collector.

ADC Analog-to-Digital Converter. A device for converting an analog signal to a

digital signal that represents the same information.

air intake

temperature The temperature of the air as measured at the transmitter’s air intake.

anti-kerchunking Anti-kerchunking is a base station feature that discourages users from

“pinging” (kerchunking) the repeater with short bursts of RF.

audible indicators The radio’s audible indicators are used in combination with visual indicators

to provide feedback to the radio user. Types of audible indicators are

incoming call tones, warning tones, confirmation tones, keypress

confidence tones and signalling sidetones.

backlighting The radio’s display or keypad lights up when there is activity on the radio,

such as when a key is pressed or when a call is received. The value of the

backlighting timer and how backlighting was activated determine how long

backlighting remains on.

backlighting timer The backlighting timer determines how long backlighting remains on once

it is activated.

130 Glossary TB7100 Installation and Operation Manual

balanced line A balanced line has two wires carrying equal and opposite signals. It is

typically used in a line-connected base station for connecting to the

despatcher console. The system interface identifies the balanced line out as

Rx line output + and Rx line output -, and the balanced line in as Tx line

input + and Tx line input -.

base station A base station is a tray containing transmitter, receiver and system interface

modules.

BCD BCD (binary coded decimal) is a code in which a string of four binary digits

represents a decimal number.

birdie A birdie is a desensitised channel caused by internal interference. A birdie

can be eliminated by activating a birdie killer on the channel.

birdie killer A birdie killer is an internal circuitry switch that greatly reduces the effect

of a birdie on a channel.

brownout A dip in the supply voltage sufficient to put the control section into

hardware reset.

Calibration

Application The Calibration Application is a utility for calibrating various parts of the

receiver and transmitter circuitry.

CCDI2 CCDI2 (computer controlled data interface version 2) is a proprietary Tait

command protocol used between computer equipment and a Tait radio.

The TB7100 base station does not support CCDI2.

CCI CCI (computer controlled interface) is a proprietary Tait command protocol

used between computer equipment and a Tait radio.

channel A channel is a frequency pair (or just a single frequency in a simplex system).

Note: Different channels may have identical frequencies, while other

operating parameters may be different.

channel profile A channel profile is a named set of configuration items relating to the base

station’s RF configuration, transmitter power output and power saving

modes. Like the signalling profile, it can be applied to any channel. Together,

these profiles define most configuration items.

channel spacing Channel spacing is the frequency difference between adjacent channels.

channel table The channel table is the base station’s database of channel configurations.

TB7100 Installation and Operation Manual Glossary 131

city squelch When a radio’s noise mute threshold is programmed for city squelch, the

radio is less sensitive to interference than if programmed for country squelch

and so stronger signals are required for the radio’s speaker to unmute.

City squelch is also known as local squelch.

CODEC An IC which combines analog-to-digital conversion (coding) and digital-

to-analog conversion (decoding).

configuration file A configuration file consists of all the configuration settings needed for a

base station, stored as a file in the configurations folder. Configuration files

have the extension *.t7p. The TB7100 uses two files, one for the receiver

and one for the transmitter.

country squelch When a radio’s squelch threshold is programmed for country squelch, the

radio is more sensitive than if programmed for city squelch and so the radio’s

speaker unmutes more readily. When programmed for country squelch, the

radio can be used in areas where the signal may be weak and where

maximum range is desirable.

Country squelch is also known as distant squelch.

CTCSS CTCSS (continuous tone controlled squelch system), also known as PL

(private line), is a type of signalling that uses subaudible tones to segregate

groups of users.

CTCSS/DCS filter The CTCSS/DCS filter removes any CTCSS or DCS tones that may be

present on the received audio. The filter limits the range of frequencies the

radio passes from the incoming signal to the speaker and so in some

situations affects signal quality. Filtering can be automatically switched off

for channels that do not have CTCSS or DCS.

CTU A Calibration Test Unit (CTU) is a device used to assist in making testing

and calibration of the TB7100 easier.

CWID CWID (Continuous Wave IDentification) is a method of automatically

identifying the base station using a Morse code.

DAC Digital-to-Analog Converter. A device for converting a digital signal to an

analog signal that represents the same information.

data call A data call is a call or part of a call between two radio units that carries data

rather than speech communications. A data call can be a status message,

short data message or non-prescribed data (NPD) call.

DCS DCS (digital coded squelch), also known as DPL (digital private line), is a

type of subaudible signalling used for segregating groups of users. DCS

codes are identified by a three-digit octal number, which forms part of the

132 Glossary TB7100 Installation and Operation Manual

continuously repeating code word. When assigning DCS signalling for a

channel, you specify the three-digit code.

de-emphasis De-emphasis is a filtering process in the receiver that attenuates higher

frequency audio. It restores pre-emphasised audio to its original relative

proportions.

digital signal

processor The device in a radio that analyses and processes signals in the digital

domain. Also known as DSP.

Duplexer A duplexer is a device for connecting one antenna to a transmitter and

receiver at the same time.

duty cycle Duty cycle is used in relation to the transmitter. It is the proportion of time

(expressed as a percentage) during which the transmitter is keyed.

The transmitter can be operated continuously.

economy cycling Economy cycling is the switching between states that occurs when economy

mode is active and after there is no valid activity on a channel for a

preprogrammed time (the economy mode timer). Economy cycling consists

of two states, the receive state and the standby state. The amount of time the

radio spends in each state is determined by the economy duty cycle.

economy duty cycle The economy duty cycle is the amount of time the radio spends in the

receive and standby states during economy cycling.

economy mode Economy mode reduces the radio’s power consumption when it is idle.

When economy mode is active, and there has been no valid activity on a

channel for the duration of the economy mode timer, the radio begins

economy cycling.

economy mode

timer The economy mode timer sets the time between when valid activity was last

detected on a channel and the start of economy cycling.

EIA Electronic Industries Alliance. Accredited by the American National

Standards Institute (ANSI) and responsible for developing

telecommunications and electronics standards in the USA.

EMC Electromagnetic Compatibility. The ability of equipment to operate in its

electromagnetic environment without creating interference with other

devices or being susceptible to disturbance in the presence of other

equipment.

ETSI European Telecommunications Standards Institute. The non-profit

organisation responsible for producing European telecommunications

standards.

TB7100 Installation and Operation Manual Glossary 133

FFSK FFSK (fast frequency shift keying). In Trunking applications this is the

method by which code words are sent over the control channel. In 1200

baud FFSK, a 1200 Hz tone represents a zero and an 1800 Hz tone

represents a one.

frequency band The range of frequencies that the equipment is capable of operating on.

front panel The part of the chassis that has the user interface on it.

Full Duplex Full duplex is the action of receiving and transmitting at the same time.

function key A function key is a key on a radio or radio accessory that can have functions

assigned to it.

gating Gating is the process of opening and closing the receiver audio path. When

a valid signal is received, the receiver audio path opens.

GPIO General Purpose Input Output (GPIO) lines are used on the TB7100 to

configure it for different modes.

hysteresis Hysteresis is the difference between the upper and lower trigger points. For

example, the receiver gate opens when the upper trigger point is reached,

but will not close until the level falls to the lower trigger point. An adequate

hysteresis prevents the receiver gate from repeatedly opening and closing

when the level is about that of the trigger point.

inactive Digital outputs are inactive if the base station is doing nothing to them. They

are floating, open collector outputs. Digital inputs are inactive when they are

open circuit.

indicator Indicators provide feedback to the radio user on how the current operation

is proceeding and on the operating state of the radio. For example, keypress

confidence tones are the tones heard when a keypad key or a function key

is pressed and tell the user that an action is permitted. Tait radios use

combinations of audible indicators and visual indicators.

inhibit Prevents the radio state changing.

134 Glossary TB7100 Installation and Operation Manual

isolator An isolator is a passive two-port device which transmits power in one

direction, and absorbs power in the other direction. It is used in a PA to

prevent damage to the RF circuitry from high reverse power, and reduces

the generation of spurious product due to the ingress of signals from other

transmitters.

kerchunking Kerchunking is transmitting for a second or less without saying anything in

order to test the base station. This results in a ‘kerchunk’ sound.

keypress confidence

tone A keypress confidence tone is a type of audible indicators given each time

the user presses a key to confirm that the action selected is valid.

LCD A Liquid Crystal Display (LCD) is used on the TB7100 user interface to

display channel number.

line-controlled base

station A TB7100 is a line-controlled base station when it receives audio (sending

it out via its systems interface), transmits audio received over its systems

interface, and its transmitter is keyed via the Tx Key line.

local squelch See city squelch.

Mandatory Settings The mandatory settings are settings in the programming application that

must not be changed from their default states or the TB7100 will not

operate correctly. The Mandatory Settings in the receiver module are not

the same as those in the transmitter module.

mute A mute controls the circumstances under which a received signal is passed

to the radio’s audio output. When a mute is active, the radio’s speaker audio

path opens under certain conditions, determined by the type of signalling

operating on a channel and the noise mute threshold.

noise mute The noise mute feature ensures that the radio’s speaker only unmutes when

an intelligible signal is received. A signal is considered intelligible when it is

strong enough to exceed a predetermined noise mute threshold.

noise mute

threshold The noise mute threshold is the level the signal must reach before it is

regarded as intelligible and the radio’s mute is opened.

TB7100 Installation and Operation Manual Glossary 135

operating range Operating range is another term for switching range.

PA The PA (power amplifier) is a part of the transmitter that boosts the exciter

output to a certain level sufficient to transmit via the antenna.

power down Radio is switched off.

power up Radio is switched on.

pre-emphasis Pre-emphasis is a process in the transmitter that boosts higher audio

frequencies.

programming manipulating calibration database, radio database.

Programming

Application The programming application is used to create configuration files for the

base station. The programming application can read files from the base

station or load new files onto the base station.

programming

database The programming database is the information that is altered using the radio

programming application. For trunked radios, each programming database

consists of separate network, fleet and radio information.

programming mode The mode of operation of the radio in which computer equipment can read

from and write to the radio database.

quiet operation When quiet operation is active, all audible indicators except incoming call

alerts, sidetones and warning tones are disabled. Contrast with silent

operation.

quiet state The quiet state is the state the radio is in when monitor is inactive the radio

user does not have to listen to traffic that is not intended for them.

Recommended

Settings Recommended settings are settings in the programming application that

should not be changed from the recommended default value, but unlike

mandatory settings, the user is permitted to make changes; providing they

verify the correct operation of the enabled or modified feature. No

guarantee is given that a feature will work if the recommended settings

disable the feature or if a recommended value is changed.

136 Glossary TB7100 Installation and Operation Manual

repeater A repeater receives a radio signal and re-transmits it. Use of a repeater

increases the coverage area of a two-way radio system and ensures more

reliable performance in areas where signals are reflected or attenuated by

buildings or terrain.

In a repeater-based system, the radio’s transmit frequency is the frequency

the repeater is listening on, and the radio’s receive frequency is the frequency

the repeater re-broadcasts signals on.

receive (Rx)

frequency The receive frequency is the frequency that a radio is currently tuned to.

reverse tone burst Reverse tone bursts (RTB) can be used with CTCSS. When reverse tone

bursts are enabled, the phase of the generated tones is reversed for a number

of cycles just before transmission ceases. If the receiver is configured for

reverse tone burst, it responds by closing its gate faster than if the RTB were

not transmitted.

RF RF stands for radio frequency and refers to the part of the electromagnetic

spectrum used to transmit radio and television signals.

RSSI RSSI (Received Signal Strength Indicator) feature that indicates the strength

of the received signal.

Rx Rx is an abbreviation for receive or receiver.

sensitivity The sensitivity of a radio receiver is the minimum input signal strength

required to provide a useable output.

SINAD SINAD (Signal plus Noise and Distortion) is a measure of signal quality. It

is the ratio of (signal + noise + distortion) to (noise + distortion). A SINAD

of 12dB corresponds to a signal to noise voltage ratio of 4:1.

subaudible

signalling Subaudible signalling is signalling that is at the bottom end of the range of

audible frequencies. The base station supports CTCSS and DCS subaudible

signalling.

subtone A subtone (subaudible signalling tone) is a CTCSS tone or a DCS code.

switching range The switching range is the range of frequencies that the equipment is tuned

to operate on.

system interface The system interface is the set of inputs to and outputs from the base station

(excluding RF), provided by a module inside the tray.

TB7100 Installation and Operation Manual Glossary 137

TB7100 Base Station A TB7100 base station consists of the equipment necessary to receive and

transmit on one channel. Generally, this means receiver, transmitter and

system interface modules. Often abbreviated to TB7100 or base station.

TCXO Temperature compensated crystal oscillator (voltage controlled). The

frequency reference for the RF part of the radio.

Talk Through

Repeater A TB7100 is a talk through repeater when its audio path is configured to

pass the audio it receives on to the transmitter, and its receiver gate signal is

configured to key the transmitter.

THSD Tait High Speed Data (THSD) is a proprietary data protocol. THSD uses a

four level frequency shift keying modulation scheme.

toggle The term toggle is used to describe the switching between two states.

TOI Tone On Idle (TOI) is an audio tone used on the receiver output to indicate

when the base station is idle.

transmit (Tx)

frequency The transmit frequency is the frequency that all outgoing transmissions are

made on.

transmit inhibit The transmit inhibit feature determines under what conditions a

transmission request does not result in the radio transmitting.

transmit lockout The transmit lockout feature prevents the base station from transmitting for

a time once the transmit timer has expired.

Tx Tx is an abbreviation for transmit or transmitter.

138 Glossary TB7100 Installation and Operation Manual

unbalanced line An unbalanced line has one wire earthed. It is typically used for short

connections, for example, between a base station and a repeater on the same

site. The system interface identifies the wires of unbalanced lines with Rx

audio output, Tx audio input, and Ground.

User Defined

Settings The User Defined Settings are settings in the programming application that

are specific to the customers application. These are the only settings that

need to be changed when configuring a TB7100 for operation.

user interface The user interface panel is an area at the front of the base station with

buttons, LEDs and other controls that let you interact with the base station.

valid signal A valid signal is a signal that the receiver responds to by opening the receiver

gate. A signal is valid for example when it is stronger than a minimum level

and when it has the specified subtone.

visual indicator The term “visual indicator” refers to a visual cue the radio gives to provide

feedback to the user. Visual indicators are used in combination with audible

indicators. Visual indicators include LEDs and LCD display text.

VSWR Voltage Standing Wave Ratio (VSWR) is the ratio of the maximum peak

voltage anywhere on the line to the minimum value anywhere on the line.

A perfectly matched line has a VSWR of 1:1. A high ratio indicates that the

antenna subsystem is poorly matched.

Watchdog A watchdog circuit checks that the system is still responding. If the system

does not respond (because the firmware has locked up), the circuit resets the

system.

TB7100 Installation and Operation Manual 139

Tait General Software Licence Agreement

This legal document is an Agreement between

you (the “Licensee”) and Tait Electronics

Limited (“Tait”). By using any of the Software

or Firmware items prior-installed in the

related Tait product, included on CD or

downloaded from the Tait website,

(hereinafter referred to as “the Software or

Firmware”) you agree to be bound by the

terms of this Agreement. If you do not agree

to the terms of this Agreement, do not install

and use any of the Software or Firmware.

If you install and use any of the Software or

Firmware that will be deemed to be

acceptance of the terms of this

licence agreement.

The terms of this Agreement shall apply

subject only to any express written terms of

agreement to the contrary between Tait and

the Licensee.

Licence

TAIT GRANTS TO YOU AS LICENSEE THE NON-

EXCLUSIVE RIGHT TO USE THE SOFTWARE OR

FIRMWARE ON A SINGLE MACHINE PROVIDED

YOU MAY ONLY:

1. COPY THE SOFTWARE OR FIRMWARE INTO

ANY MACHINE READABLE OR PRINTED FORM

FOR BACKUP PURPOSES IN SUPPORT OF YOUR

USE OF THE PROGRAM ON THE SINGLE MACHINE

(CERTAIN PROGRAMS, HOWEVER, MAY INCLUDE

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THEY ARE MARKED “COPY PROTECTED”),

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REPRODUCED AND INCLUDED ON ANY SUCH

COPY OF THE SOFTWARE OR FIRMWARE;

AND / OR

2. MERGE IT INTO ANOTHER PROGRAM FOR

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PORTION OF ANY SOFTWARE OR FIRMWARE

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CONTINUE TO BE SUBJECT TO THE TERMS AND

CONDITIONS OF THIS AGREEMENT).

THE LICENSEE MAY NOT DUPLICATE, MODIFY,

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Important Notice

THE SOFTWARE OR FIRMWARE MAY CONTAIN

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Title to Software

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Term and Termination

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MAY TERMINATE THIS LICENCE AT ANY TIME BY

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FIRMWARE AND ASSOCIATED WRITTEN

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AUTOMATICALLY AND WITHOUT NOTICE FROM

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COMPLY WITH ANY TERM OR CONDITION OF

THIS AGREEMENT. THE LICENSEE AGREES TO

DESTROY ALL COPIES OF THE SOFTWARE OR

FIRMWARE AND ASSOCIATED WRITTEN

MATERIALS IN THE EVENT OF

SUCH TERMINATION.

140 TB7100 Installation and Operation Manual

Limited Warranty

THE SOFTWARE OR FIRMWARE (INCLUDING

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TAIT AND ACCEPTED BY THE LICENSEE “AS IS”

WITHOUT WARRANTY OF ANY KIND EITHER

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BETWEEN TAIT AND THE LICENSEE THIS IS THE

COMPLETE AND EXCLUSIVE STATEMENT OF THE

AGREEMENT BETWEEN IT AND TAIT IN

RELATION TO THE SOFTWARE OR FIRMWARE

WHICH SUPERSEDES ANY PROPOSAL OR PRIOR

AGREEMENT, ORAL OR WRITTEN AND ANY

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TB7100 Installation and Operation Manual 141

Directive 1999/5/EC Declaration of Conformity

da Dansk

Undertegnede Tait Electronics Limited erklærer

herved, at følgende udstyr TBBA4A, TBBB1A

& TBBH5A overholder de væsentlige krav og

øvrige relevante krav i direktiv 1999/5/EF.

Se endvidere: http://eudocs.taitworld.com/

de Deutsch

Hiermit erklärt Tait Electronics Limited die

Übereinstimmung des Gerätes TBBA4A,

TBBB1A & TBBH5A mit den grundlegenden

Anforderungen und den anderen relevanten

Festlegungen der Richtlinie 1999/5/EG.

Siehe auch: http://eudocs.taitworld.com/

el Ελληνικός

Με την παρουσα Tait Electronics Limited

δηλωνει οτι TBBA4A, TBBB1A & TBBH5A

συµµορφωνεται προσ τισ ουσιωδεισ

απαιτησεισ και τισ λοιπεσ σχετικεσ διαταξεισ

τησ οδηγιασ 1999/5/ΕΚ.

βλέπε και: http://eudocs.taitworld.com/

en English

Tait Electronics Limited declares that this

TBBA4A, TBBB1A & TBBH5A complies with

the essential requirements and other relevant

provisions of Directive 1999/5/EC.

Tait TBBH5A Base Station Transceiver User Manual TB7100 Installation and Operation Manual

Tait Limited Base Station Transceiver TB7100 Installation and Operation Manual

Exhibit D Users Manual per 2 1033 c3

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