
5.7
Fault diagnosis.. ............ ............ ............ ............ ............ ............ ............ ............ ............32
5.7.1
General ............ ............ ............ ............ ............ ............ ............ ............ ............32
5.7.2
Transceiver will not power up ...... ............ ............ ............ ............ ............ ............33
5.7.3
Transceiver will not receive but displays OK .......... ............ ............ ............ ............35
5.7.3.1 No receiver noise at all ... ............ ............ ............ ............ ............ ............35
5.7.3.2 Receive noise present, but does not receive.......... ............ ............ ............35
5.7.3.4 Transceiver turns on but displays "Barrett 900 Transceiver" only. .... ............35
5.7.4
Transceiver turns on, internal voltages are normal, but no LCD display. ........ ............36
5.7.5
Main microprocessor faults ......... ............ ............ ............ ............ ............ ............36
5.7.6
VCO faults ........ ............ ............ ............ ............ ............ ............ ............ ............37
5.7.7
Transmitter faulty ........... ............ ............ ............ ............ ............ ............ ............37
5.7.8
Replacement of PA output and driver transistors ... ............ ............ ............ ............38
5.8
Adjustments...... ............ ............ ............ ............ ............ ............ ............ ............ ............40
5.8.1
Front panel........ ............ ............ ............ ............ ............ ............ ............ ............40
5.8.2
Microprocessor PCB...... ............ ............ ............ ............ ............ ............ ............40
5.8.2.1 Reference oscillator setup (Standard oscillator) .... ............ ............ ............40
5.8.2.2 Reference oscillator setup (High stability oscillator)............ ............ ............40
5.8.2.3 VCO frequency adjustment ......... ............ ............ ............ ............ ............40
5.8.2.4 Carrier Insertion oscillator peaking ........... ............ ............ ............ ............40
5.8.2.5 VCO Low pass filter........ ............ ............ ............ ............ ............ ............40
5.8.2.6 DAC Low pass filter ........ ............ ............ ............ ............ ............ ............41
5.8.3
RF/ Audio PCB.. ............ ............ ............ ............ ............ ............ ............ ............41
5.8.3.1 Input low pass filter......... ............ ............ ............ ............ ............ ............41
5.8.3.2 45MHz IF Filter.. ............ ............ ............ ............ ............ ............ ............41
5.8.3.3 IF Inductors....... ............ ............ ............ ............ ............ ............ ............42
5.8.3.4 Noise blanker potentiometer ....... ............ ............ ............ ............ ............42
5.8.3.5 Carrier rejection potentiometer.... ............ ............ ............ ............ ............42
5.8.3.6 Transmit drive level set potentiometer ...... ............ ............ ............ ............42
5.8.3.7 455Khz IF ......... ............ ............ ............ ............ ............ ............ ............42
5.8.4
PA PCB ............ ............ ............ ............ ............ ............ ............ ............ ............42
5.8.4.1 Driver bias setup ............ ............ ............ ............ ............ ............ ............42
5.8.4.2 PA bias setup .... ............ ............ ............ ............ ............ ............ ............42
5.8.4.3 Power level adjustment .. ............ ............ ............ ............ ............ ............43
5.3.4.4 Programmable links ....... ............ ............ ............ ............ ............ ............43
6.0
Software programming and options ......... ............ ............ ............ ............ ............ ............ ............44
6.1
Barrett 930 transceivers . ............ ............ ............ ............ ............ ............ ............ ............44
6.2
Barrett 940 transceivers . ............ ............ ............ ............ ............ ............ ............ ............44
6.3
Barrett 950 transceivers . ............ ............ ............ ............ ............ ............ ............ ............44
6.4
Barrett 980 transceivers . ............ ............ ............ ............ ............ ............ ............ ............44
7.0
Internal jumper settings ............ ............ ............ ............ ............ ............ ............ ............ ............45
7.1
Standard jumpers locations ........ ............ ............ ............ ............ ............ ............ ............45
7.2
Configuring antenna connectors . ............ ............ ............ ............ ............ ............ ............45
8.0
Internal options ............ ............ ............ ............ ............ ............ ............ ............ ............ ............46
8.1
Internal scrambler option ............ ............ ............ ............ ............ ............ ............ ............46
8.2
Internal GPS receiver option ....... ............ ............ ............ ............ ............ ............ ............48
8.3
Internal ALE option P/N BCA95001 and BCA95002 ........... ............ ............ ............ ............48
9.0
Features and configurations unique to transceiver models . ............ ............ ............ ............ ............49
9.1
Barrett 950 transceivers fitted with high stability option - P/N BC95001 and BC95003 ............49
9.2
Barrett 950M transceiver module - P/N BC95004 .. ............ ............ ............ ............ ............49
9.3
Barrett 950MR receivers ............ ............ ............ ............ ............ ............ ............ ............49
9.4
Barrett 940 man-pack..... ............ ............ ............ ............ ............ ............ ............ ............50
9.4.1
940 ancillary components ........... ............ ............ ............ ............ ............ ............50
9.4.1.1 110 to 240 VAC input charger supply Barrett P/N BCA94012 ........... ............50
9.4.1.2 Charge regulator suit 13Ah NiMH battery 12V DC input P/N BCA94021 ...50
9.4.1.3 940 multiple-use distribution unit Barrett P/N BCA94010.... ............ ............51
9.4.1.4 940 automatic antenna tuner....... ............ ............ ............ ............ ............51
9.5
Barrett 980 GMDSS transceiver .. ............ ............ ............ ............ ............ ............ ............52
PAGE 3
BARRETT 900 SERIES TRANSCEIVERS
Содержание 900 Series
Страница 58: ...BARRETT 900 SERIES TRANSCEIVERS RF Audio PCB overlay showing optional narrow filter components PAGE 58 ...
Страница 60: ...BARRETT 900 SERIES TRANSCEIVERS PAGE 60 This page has been intentionally left blank ...
Страница 72: ...BARRETT 900 SERIES TRANSCEIVERS Microprocessor PCB overlay showing TCXO PAGE 72 ...
Страница 74: ...BARRETT 900 SERIES TRANSCEIVERS PAGE 74 This page has been intentionally left blank ...
Страница 87: ...BARRETT 900 SERIES TRANSCEIVERS PA PCB overlay PAGE 87 ...
Страница 88: ...BARRETT 900 SERIES TRANSCEIVERS PAGE 88 This page has been intentionally left blank ...
Страница 89: ...BARRETT 900 SERIES TRANSCEIVERS PA schematic See File PA SCHEMATIC pdf PAGE 89 ...
Страница 90: ...BARRETT 900 SERIES TRANSCEIVERS PAGE 90 This page has been intentionally left blank ...
Страница 99: ...BARRETT 900 SERIES TRANSCEIVERS Front panel PCB overlay PAGE 99 ...
Страница 100: ...BARRETT 900 SERIES TRANSCEIVERS PAGE 100 Front Panel Schematic 900 Front Panel Schematic Drawing No 900516A1 ...
Страница 103: ...BARRETT 900 SERIES TRANSCEIVERS Remote Control Head PCB overlay PAGE 103 ...
Страница 108: ...BARRETT 900 SERIES TRANSCEIVERS Scrambler PCB overlay PAGE 108 ...
Страница 109: ...BARRETT 900 SERIES TRANSCEIVERS Scrambler Schematic PAGE 109 900 Scrambler Module Schematic 900D54A5 ...
Страница 111: ...BARRETT 900 SERIES TRANSCEIVERS GPS ALE Motherboard Overlay PAGE 111 ...
Страница 112: ...BARRETT 900 SERIES TRANSCEIVERS GPS ALE Motherboard Schematic PAGE 112 900 GPS ALE Schematic ...
Страница 114: ...BARRETT 900 SERIES TRANSCEIVERS 950MR Low Pass Filter Power PCB overlay PAGE 114 ...
Страница 116: ...BARRETT 900 SERIES TRANSCEIVERS PAGE 116 This page has been intentionally left blank ...
Страница 121: ...BARRETT 900 SERIES TRANSCEIVERS 980PSU DC DC Switch Mode Power Supply PCB Overlay PAGE 121 ...
Страница 133: ...BARRETT 900 SERIES TRANSCEIVERS 900 Hand Microphone Schematic PAGE 133 930 940 950 980 Hand Microphone Schematic ...
Страница 134: ...BARRETT 900 SERIES TRANSCEIVERS 900 Cloning Cable Schematic PAGE 134 930 950 980 Cloning Cable Schematic ...
Страница 139: ...940 Front Metalwork Connection PCB Overlay BARRETT 900 SERIES TRANSCEIVERS PAGE 139 ...
Страница 142: ...BARRETT 900 SERIES TRANSCEIVERS 940 Automatic Antenna Tuner PCB Overlay Barrett P N BCA94009 PAGE 142 ...
Страница 148: ...940 Tuner Front Panel PCB Overlay BARRETT 900 SERIES TRANSCEIVERS PAGE 148 ...
Страница 149: ...940 Tuner Front Panel PCB Schematic BARRETT 900 SERIES TRANSCEIVERS PAGE 149 ...
Страница 153: ...BARRETT 900 SERIES TRANSCEIVERS 940 Charge reg 13Ah 12V DC input PCB overlay Barrett P N BCA94021 PAGE 153 ...
Страница 163: ...BARRETT 900 SERIES TRANSCEIVERS PAGE 163 940 Programming Cable Schematic 940 Transceiver Programming Cable Schematic ...