Benutzerhandbuch für Tait Limited TEL0046

Inhaltsverzeichnis

• Introduction

  1
  • TEL Contact Information

    2
  • About This Manual

    3
  • Updating Equipment And Manuals

    4
  • Copyright

    4
  • Ordering Tait Service Manuals

    4
  • Publication Information

    4
  • Table Of Contents

    5
  • List Of Effective Pages

    6
• Part A Introduction To Servicing

  13
  • 1 General

    15
    • 1.1 Additional Technical Information

      15
    • 1.2 Caution: CMOS Devices

      15
    • 1.3 Caution: Aerial Load

      16
    • 1.4 Caution: Beryllium Oxide & Power Transistors

      16
  • 2 Mechanical

    17
    • 2.1 Torx Recess Head Screws

      17
    • 2.2 Pozidriv & Philips Recess Head Screws

      18
    • 2.3 Disassembly/Reassembly

      19
      • 2.3.1 Receivers/Exciters/Transmitters

        19
      • 2.3.2 Power Amplifiers

        19
    • 2.4 Cover Screw Torques

      19
    • 2.5 Chassis & Cover Compatibility

      20
  • 3 Component Replacement

    21
    • 3.1 Leaded Components

      21
      • 3.1.1 Desoldering Iron Method

        21
      • 3.1.2 Component Cutting Method

        21
    • 3.2 Surface Mount Devices

      22
    • 3.3 Cased Mica Capacitors

      22
  • 4 Software History

    23
    • 4.1 PGM800Win V1.0

      23
    • 4.2 PGM800Win V2.00

      23
• Part B T835 Receiver

  25
  • 1 T835 General Information

    27
    • 1.1 Introduction

      31
    • 1.2 Specifications

      32
      • 1.2.1 Introduction

        32
      • 1.2.2 General

        33
      • 1.2.3 RF Section

        33
      • 1.2.4 Audio Section

        35
        • 1.2.4.1 General

          35
        • 1.2.4.2 CTCSS

          35
        • 1.2.4.3 Mute Operation

          36
      • 1.2.5 Microcontroller

        36
      • 1.2.6 Test Standards

        36
        • 1.2.6.1 European Telecommunication Standard

          36
        • 1.2.6.2 DTI CEPT Recommendation T/R-24-01

          37
        • 1.2.6.3 Telecommunications Industry Association

          37
    • 1.3 Product Codes

      38
    • 1.4 Standard Product Range

      39
  • 2 T835 Circuit Operation

    41
    • 2.1 Introduction

      43
    • 2.2 Receiver Front End

      44
    • 2.3 Mixer

      45
    • 2.4 IF Circuitry

      45
    • 2.5 Noise Mute (Squelch)

      46
    • 2.6 Carrier Mute

      46
    • 2.7 Audio Processor

      47
    • 2.8 Power Supply And Regulators

      48
    • 2.9 Microcontroller

      49
    • 2.10 Synthesised Local Oscillator

      50
    • 2.11 VCO

      51
    • 2.12 Received Signal Strength Indicator (RSSI)

      51
  • 3 T835 Initial Tuning & Adjustment

    53
    • 3.1 Introduction

      55
    • 3.2 Channel Programming

      55
    • 3.3 Test Equipment Required

      56
    • 3.4 Short Tuning Procedure

      57
      • 3.4.1 Introduction

        57
      • 3.4.2 Synthesiser Alignment

        57
      • 3.4.3 Front End Alignment

        57
      • 3.4.4 Mute Adjustment

        58
        • 3.4.4.1 Noise Mute

          58
        • 3.4.4.2 Carrier Level Mute

          58
      • 3.4.5 Line Amplifier Output

        58
      • 3.4.6 CTCSS

        59
        • 3.4.6.1 Decoder Operation

          59
        • 3.4.6.2 Opening Sinad

          59
        • 3.4.6.3 High Pass Filter

          59
      • 3.4.7 RSSI (If Used)

        60
    • 3.5 Audio Processor Links

      60
      • 3.5.1 General

        60
      • 3.5.2 Audio Processor Linking Details For CTCSS

        61
    • 3.6 Synthesiser Alignment

      62
    • 3.7 Alignment Of Receiver Front End And IF

      62
    • 3.8 Gating Delay

      64
    • 3.9 Noise Mute Adjustment

      64
    • 3.10 Carrier Level Mute

      64
    • 3.11 Audio Processor

      65
      • 3.11.1 Line Amplifier Output

        65
      • 3.11.2 Monitor Amplifier Output (Speaker Output)

        65
    • 3.12 CTCSS

      65
      • 3.12.1 Decoder Operation

        65
      • 3.12.2 Opening Sinad

        65
      • 3.12.3 High Pass Filter

        66
    • 3.13 RSSI

      66
  • 4 T835 Functional Testing

    67
    • 4.1 Current Consumption

      69
    • 4.2 Sensitivity

      69
    • 4.3 Switching Range

      69
    • 4.4 Audio Distortion

      70
    • 4.5 Ultimate Signal-To-Noise Ratio

      70
    • 4.6 Deemphasised Audio Frequency Response

      71
    • 4.7 Noise Mute (If Linked In)

      72
    • 4.8 RSSI

      72
    • 4.9 Carrier Level Mute (Carrier Mute Linked In)

      73
  • 5 T835 Fault Finding

    75
    • 5.1 Visual Checks

      77
    • 5.2 Component Checks

      77
    • 5.3 Front Panel LED Indicator

      77
    • 5.4 DC Checks

      78
      • 5.4.1 Power Rails

        78
      • 5.4.2 VCO Locking

        78
      • 5.4.3 Mute Operation

        78
    • 5.5 RF Checks

      79
      • 5.5.1 VCO Frequency

        79
      • 5.5.2 RF Sensitivity

        79
      • 5.5.3 Oscillator Stability

        80
        • 5.5.3.1 TCXO

          80
        • 5.5.3.2 Second IF

          80
      • 5.5.4 Demodulator Output

        80
      • 5.5.5 IF Distortion

        81
    • 5.6 PGM800Win Generated Errors

      82
    • 5.7 Fault Finding Charts

      83
      • 5.7.1 Microcontroller (IC810)

        83
        • 5.7.1.1 Basic Checks

          83
        • 5.7.1.2 Serial Communication

          84
        • 5.7.1.3 CTCSS Decode

          85
      • 5.7.2 Regulator

        86
      • 5.7.3 Synthesiser

        87
      • 5.7.4 Noise Mute

        90
      • 5.7.5 Carrier Mute

        91
      • 5.7.6 Receiver

        92
      • 5.7.7 Audio

        93
  • 6 T835 PCB Information

    95
    • 6.1 Introduction

      97
      • Product Type Identification

        97
      • PCB Identification

        97
      • Parts Lists

        98
      • Parts List Amendments

        98
      • Variant Components

        99
      • Grid Reference Index

        99
      • Using CAD Circuit Diagrams

        100
    • 6.2 T835 Receiver PCB

      101
      • T835 Parts List (IPN 220-01394-02)

        103
      • T835 Mechanical & Miscellaneous Parts (220-01394-02)

        108
      • T835 Grid Reference Index (IPN 220-01394-02)

        111
• Part C T836 Transmitter & T837 Exciter

  115
  • 1 T836/837 General Information

    117
    • 1.1 Introduction

      123
    • 1.2 Specifications

      124
      • 1.2.1 Introduction

        124
      • 1.2.2 General

        124
      • 1.2.3 RF Section

        125
      • 1.2.4 Audio Processor

        126
        • 1.2.4.1 Inputs

          126
        • 1.2.4.2 Modulation Characteristics

          127
        • 1.2.4.3 CTCSS

          127
      • 1.2.5 Microcontroller

        127
      • 1.2.6 Test Standards

        128
        • 1.2.6.1 European Telecommunication Standard

          128
        • 1.2.6.2 DTI CEPT Recommendation T/R-24-01

          128
        • 1.2.6.3 Telecommunications Industry Association

          128
    • 1.3 Product Codes

      129
    • 1.4 T836 Standard Product Range

      130
    • 1.5 T837 Standard Product Range

      131
  • 2 T836/837 Circuit Operation

    133
    • 2.1 Introduction

      135
    • 2.2 Microcontroller

      136
    • 2.3 Synthesised Local Oscillator

      137
      • 2.3.1 Two Point Modulation

        138
    • 2.4 VCO

      139
      • 2.4.1 VCO Supply

        139
    • 2.5 Audio Processor

      140
      • 2.5.1 General

        140
      • 2.5.2 Audio Inputs

        140
      • 2.5.3 Keying Inputs

        141
      • 2.5.4 Compressor (Automatic Level Control (ALC))

        141
      • 2.5.5 Outputs To Modulators

        141
    • 2.6 Power Supply & Regulator Circuits

      142
    • 2.7 Transmit Timers

      143
    • 2.8 T836 Drive Amplifier & PA

      144
    • 2.9 T837 Exciter Drive Amplifier

      145
  • 3 T836/837 Initial Tuning & Adjustment

    147
    • 3.1 Introduction

      149
    • 3.2 Channel Programming

      149
    • 3.3 Test Equipment Required

      150
    • 3.4 Short Tuning Procedure

      151
      • 3.4.1 Introduction

        151
      • 3.4.2 Synthesiser Alignment

        151
      • 3.4.3 Output Power Adjustment (T836 Only)

        151
      • 3.4.4 Two Point Modulation Adjustment

        152
      • 3.4.5 CTCSS Encoder (If Used)

        153
      • 3.4.6 FM Deviation (Limiter) Adjustment

        153
      • 3.4.7 Line-in Level Adjustment

        153
    • 3.5 Audio Processor Links

      154
      • 3.5.1 Link Details

        154
      • 3.5.2 Typical Options

        154
    • 3.6 Synthesiser Alignment

      155
    • 3.7 PA Alignment (T836 Only)

      156
    • 3.8 Thermal Shutdown (T836 Only)

      156
    • 3.9 Audio Processor & CTCSS

      157
      • 3.9.1 Two Point Modulation

        157
      • 3.9.2 Modulator Adjustment

        157
      • 3.9.3 CTCSS Encoder (If Used)

        158
      • 3.9.4 Limiter Adjustment

        158
      • 3.9.5 Line Level Without Compressor

        158
      • 3.9.6 Compressor

        159
        • 3.9.6.1 Compressor On Line Input Only

          159
        • 3.9.6.2 Compressor On Microphone Input Only

          159
        • 3.9.6.3 Compressor On Both Line & Microphone Inputs

          160
  • 4 T836/837 Functional Testing

    161
    • 4.1 Current Consumption

      163
    • 4.2 Output Power

      163
    • 4.3 Output Frequency

      163
    • 4.4 Timers

      163
    • 4.5 Frequency Response

      164
    • 4.6 Audio Level Input Sensitivity

      167
  • 5 T836/837 Fault Finding

    169
    • 5.1 Visual Checks

      171
    • 5.2 Component Checks

      171
    • 5.3 Front Panel LED Indicator

      171
    • 5.4 DC Checks

      172
      • 5.4.1 Power Rails

        172
      • 5.4.2 VCO Locking

        172
    • 5.5 RF Checks

      173
      • 5.5.1 T836 Drive Power

        173
      • 5.5.2 T836 PA Output Power

        173
      • 5.5.3 T837 Output Power

        173
      • 5.5.4 Audio And Modulation

        174
    • 5.6 PGM800Win Generated Errors

      175
    • 5.7 Fault Finding Charts

      176
      • 5.7.1 Microcontroller (IC810)

        176
        • 5.7.1.1 Basic Checks

          176
        • 5.7.1.2 Serial Communication

          177
        • 5.7.1.3 CTCSS Encode

          178
      • 5.7.2 Regulator

        179
      • 5.7.3 Synthesiser

        180
      • 5.7.4 T836 Drive Amplifier

        183
      • 5.7.5 T836 PA & Power Control

        184
      • 5.7.6 T837 Exciter Drive Amplifier

        185
      • 5.7.7 Audio Processor

        186
    • 5.8 To Replace The T836 PA Transistors (Q415 & Q425)

      187
  • 6 T836/837 PCB Information

    189
    • 6.1 Introduction

      191
      • Product Type Identification

        191
      • PCB Identification

        191
      • Parts Lists

        192
      • Parts List Amendments

        192
      • Variant Components

        193
      • Grid Reference Index

        193
      • Using CAD Circuit Diagrams

        194
    • 6.2 T836 Transmitter PCB

      195
      • T836 Parts List (IPN 220-01395-02)

        197
      • T836 Mechanical & Miscellaneous Parts (220-01395-02)

        202
      • T836 Grid Reference Index (IPN 220-01395-02)

        205
    • 6.3 T837 Exciter PCB

      209
      • T837 Parts List (IPN 220-01390-02)

        211
      • T837 Mechanical & Miscellaneous Parts (220-01390-02)

        216
      • T837 Grid Reference Index (IPN 220-01390-02)

        219
      • T837 Parts List (IPN 220-01390-03)

        223
      • T837 Mechanical & Miscellaneous Parts (220-01390-03)

        228
      • T837 Grid Reference Index (IPN 220-01390-03)

        231
• Part D T838 & T839 Power Amplifiers

  235
  • 1 T838/839 General Information

    237
    • 1.1 Introduction

      241
    • 1.2 Specifications

      242
      • 1.2.1 Introduction

        242
      • 1.2.2 General

        242
      • 1.2.3 Test Standards

        243
        • 1.2.3.1 European Telecommunication Standard

          243
        • 1.2.3.2 DTI CEPT Recommendation T/R-24-01

          244
        • 1.2.3.3 Telecommunications Industry Association

          244
    • 1.3 Product Codes

      245
    • 1.4 Standard Product Range

      246
  • 2 T838/839 Circuit Operation

    247
    • 2.1 Introduction

      249
    • 2.2 RF Circuitry

      250
    • 2.3 Control Circuitry

      251
      • 2.3.1 Power Control

        252
      • 2.3.2 Driver Power Level

        252
      • 2.3.3 Thermal Protection

        252
      • 2.3.4 Forward And Reverse Power Alarms

        253
      • 2.3.5 Forward And Reverse Power Metering

        253
      • 2.3.6 Fan Control Circuitry

        253
    • 2.4 Power Supply & Regulator Circuits

      254
  • 3 T838/839 Initial Adjustment

    255
    • 3.1 Test Equipment Required

      257
    • 3.2 Preliminary Checks

      257
    • 3.3 Setting The Output Power

      258
    • 3.4 Limiting The Maximum Output Power

      259
    • 3.5 High Temperature Shutdown Power Level

      259
    • 3.6 Remote Forward Power Meter Calibration

      260
    • 3.7 Remote Reverse Power Meter Calibration

      260
    • 3.8 Setting Alarm Levels

      260
      • 3.8.1 Forward Power

        260
      • 3.8.2 Reverse Power

        260
  • 4 T838/839 Fault Finding

    263
    • 4.1 Visual Checks

      265
    • 4.2 DC Checks

      265
    • 4.3 RF Checks

      265
    • 4.4 Fault Finding Charts

      269
      • 4.4.1 T838 PA

        269
      • 4.4.2 T839 PA

        270
      • 4.4.3 Power Control

        271
      • 4.4.4 T839 Fan Control Circuitry

        272
    • 4.5 Replacing RF Power Modules

      273
    • 4.6 Removing The PCB From The Heatsink

      274
  • 5 T838/839 PCB Information

    277
    • 5.1 Introduction

      279
      • Product Type Identification

        279
      • T830 Series I / Series II Compatibility

        279
      • PCB Identification

        280
      • Parts Lists

        280
      • Parts List Amendments

        281
      • Variant Components

        281
      • Grid Reference Index

        282
      • Using CAD Circuit Diagrams

        282
    • 5.2 T838 Power Amplifier PCB

      283
      • T838 Parts List (IPN 220-01404-03)

        285
      • T838 Mechanical & Miscellaneous Parts (220-01404-03)

        288
      • T838 Grid Reference Index (IPN 220-01404-03)

        291
    • 5.3 T839 Power Amplifier PCB

      293
      • T839 Parts List (IPN 220-01404-03)

        295
      • T839 Mechanical & Miscellaneous Parts (220-01404-03)

        298
      • T839 Grid Reference Index (IPN 220-01404-03)

        301
• Part E T830 VCO PCB Information

  303
  • 1 Introduction

    305
    • PCB Identification

      305
    • Parts Lists

      305
    • Parts List Amendments

      306
    • Variant Components

      306
    • Grid Reference Index

      307
  • 2 T830 VCO PCB

    309
    • T830 VCO Parts List (IPN 220-01176-03)

      311
    • T830 VCO Mechanical & Miscellaneous Parts (220-01176-03)

      313
    • T830 VCO Grid Reference Index (IPN 220-01176-03)

      314
• Part F Installation

  317
  • 4 N-Type Connector Assembly

    319
• Part G System Configurations

  321
  • 1 T835 Link Selectable Features

    323
    • 1.1 Flat Or Deemphasised Response

      323
    • 1.2 Mute Relay Control

      323
    • 1.3 Mute Selection

      323
    • 1.4 Receiver Disable

      323
    • 1.5 CTCSS Configuration

      323
    • 1.6 300Hz High Pass Filter

      324
    • 1.7 Audio Processor Links

      324
      • 1.7.1 General

        324
      • 1.7.2 Audio Processor Linking Details For CTCSS

        325
  • 2 T836/837 Optional Features

    327
    • 2.1 Audio Processor

      327
      • 2.1.1 Link Details

        327
      • 2.1.2 Typical Options

        328
    • 2.2 Line Transformer Inputs And Outputs

      328
    • 2.3 Opto Key

      328
    • 2.4 Relay Driver

      328
    • 2.5 Local Microphone

      329
    • 2.6 Keying With Option PCBs

      329
  • 3 Talk Through Repeater

    331
  • 4 Line Controlled Base Without Talk Through

    333
    • 4.1 General

      333
    • 4.2 Transmitter Tail Timer

      334
  • 5 DC Line Keying

    335
• Part H T800 Ancillary Equipment

  337
  • T800 Ancillary Equipment

    339
    • Programming Kits

      339
      • T800-01-0000

        339
      • T800-01-0001

        339
      • T800-01-0002

        339
      • T800-01-0003

        339
      • T800-01-0004

        339
    • General Ancillaries

      340
      • T004-72 RF Coaxial Relay

        340
      • T800-01-0010 Calibration Test Unit

        340
      • T800-03 Auxiliary D-Range

        340
      • T800-03-0000 Auxiliary D-Range

        340
      • T800-04-0000 RSSI

        341
      • T800-08-0000 Ancillary Chassis

        341
      • T800-10-0000 Channel Select PCB

        341
      • T800-80 Local Microphone

        341
      • T818-01-0000 Receiver/Transmitter Monitor

        342
    • Paging

      343
      • T800-30-0000 & T800-30-0002 DFSK Modulators

        343
      • T800-32-0000 & T800-32-0010 DFSK Modulators

        343
    • External Frequency Reference

      344
      • T800-06-0000 External Frequency Reference Kit

        344
      • T800-06-0001 External Frequency Reference Kit

        344
      • T801 Frequency Reference Module

        344
      • T801-10 OCXO Module

        344
    • Rack Frames

      345
      • T800-22-0000

        345
      • T800-22-0001

        345
      • T800-22-0002

        345
      • T800-22-0003

        345
      • T800-22-0004

        345
      • T800-22-0005

        346
      • T800-23-0000 Slimline Repeater Mounting Kit

        346
      • T800-23-0001 Slimline Repeater Mounting Kit

        346
    • Rack Frame Guides

      347
      • T800-41-0001

        347
      • T800-41-0002

        347
      • T800-41-0003

        347
      • T800-41-0004

        347
      • T800-42-0000

        347
      • T800-42-0001

        348
      • T800-42-0002

        348
      • T800-43-0000

        348
      • T800-43-0001

        348
      • T800-44-0000

        348
      • T800-45-0000

        348
      • T800-45-0001

        348
    • Rack Frame PCBs

      349
      • T800-50-0000

        349
      • T800-50-0001

        349
      • T800-52-0000

        349
      • T800-60-0000

        349
    • Rack Frame Ancillaries

      350
      • T800-13-0000 Extender Rail

        350
      • T800-14-0000 Extender Rail

        350
      • T800-19-0000 Rack Mounting Fan

        350
      • T800-19-0010 Rack Mounting Fan

        350
    • Front Panels

      351
      • T800-15-0000 Speaker Panel

        351
      • T800-15-0001 Speaker Panel

        351
      • T800-17-0010 Circuit Breaker Panel

        351
      • T800-17-0020 Circuit Breaker Panel

        351
      • T800-40-0000 Blank Panel Fitting Kit

        351
      • T800-40-0001 Blank Panel

        351
    • Power Supplies

      352
      • T800-23-0010 Mains Power Supply

        352
      • T807-10-0000 Mains Power Supply

        352
      • T808-10-0000 Mains Power Supply

        352
• Part I Using T830 Series II Equipment In A Series I Rack Frame

  353
  • 1 Tools Required

    355
  • 2 T835/836/837 SII - SI Conversion

    357
    • 2.1 Introduction

      357
    • 2.2 Method

      358
  • 3 T838/839 SII - SI Conversion

    365
    • 3.1 Introduction

      365
    • 3.2 Method

      366