User's Guide

P25 Digital UHF Transmitter Instruction Manual
IM23-001
iii
Contents
General Information ...............................................................1
Introduction ................................................................................................1
Performance Specifi cations .......................................................................2
Theory of Operation ...............................................................5
General ......................................................................................................5
Jumper Functions and Standard Confi guration ........................................7
Test Points .................................................................................................8
Transmitter Programming ........................................................................ 10
Transmitter Assembly and Adjustment................................. 13
Repair Note.............................................................................................. 13
Transmitter Assembly and Adjustment..................................................... 14
Recommended Test Equipment List ........................................................ 14
Frequency Change .................................................................................. 14
Digital Signal Processor Board Alignment ............................................... 15
Repeater System Confi guration........................................... 19
Digital Repeater ....................................................................................... 19
Repeater System Troubleshooting........................................................... 20
Illustrations and Schematics ................................................ 23
P25 Digital Transmitter Front Panel ......................................................... 24
P25 Digital Transmitter Block Diagram .................................................... 25
P25 Digital Transmitter Component Layout - Bottom............................... 26
P25 Digital Transmitter Component Layout - Top .................................... 27
P25 Digital Transmitter Schematic Diagram ............................................ 28
P25 Adapter Board Component Layout ................................................... 29
P25 Adapter Board Schematic Diagram .................................................. 29
Parts Lists ............................................................................ 31
P25 Digital Transmitter Electrical Parts List ............................................. 31
P25 Transmitter Mechanical Parts List .................................................... 34
P25 Adapter Board Parts List................................................................... 36
Revision History ................................................................... 37