Radio Alignment Procedures; Test Setup - Motorola APX 5000 Service Manual

Chapter 6 Radio Alignment Procedures
This chapter describes both receiver and transmitter radio alignment procedures.
6.1

Test Setup

A personal computer (PC) and tuner software are required to align the radio. Refer to the applicable
manual for installation and setup procedures for the software. To perform the alignment procedures,
the radio must be connected to the PC and to a universal test set. The radio alignment test setup is
shown in Figure
7.5V UNIVERSAL
APX
BATTERY
BATTERY ADAPTER
ELIMINATOR
66009254001
RLN4510_
6-1.
SMA-BNC
5880384G68
RADIO
COMPUTER
Figure 6-1. Radio Alignment Test Setup
These radio alignment procedures should only be attempted by qualified
service personnel. Failure to perform alignment procedures properly may
result in seriously degraded radio or system performance.
TRANSMIT
BNC
RECEIVE
SET TO APPROX. 8mV FOR Tx
TEST SET
RLN4460_
PROGRAM/TEST CABLE
PMKN4013_
SYSTEM ANALYZER
30 dB PAD
OR COUNTER
30 dB PAD
WATTMETER
RF GENERATOR
AUDIO IN
TX
AUDIO GENERATOR
RX
SINAD METER
AC VOLTMETER
MEASURE 3.74Vrms FOR Rx