6-1 November 1999
Part No. 001-7780-500
ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
SECTION 6 ALIGNMENT PROCEDURE AND PERFORMANCE TESTS6.1 GENERAL
6.1.1 INTRODUCTION
The alignment procedure describedin this section
should be performed if repairs are made that could
affect the factory alignment.In addition, before a
transceiver is initiallyplaced in service, the perfor-
mance tests in Sections 6.8 and 6.9 should be
performed.
To performthe alignment described in this
section, special PCTunesoftware (see Table 1-1) and
the same basic computer setup usedfor programming
is required. This equipment is shown above and also
described in Section 3.1. Only Remote Programming
Interface (RPI), Part No. 023-9800-000,can be used
because it is the only RPI that has microphone and
speaker audio jacks that are requi red for alignment.
Only two adjustments are made manually an d the
others are made digitally using the PCTunesoftware.
The two manual adjustments are squelch sensitivity
and TCXO frequency,and if they do not need to be
reset, the transceiver can be tuned without removing
the cover.
This transceiver does nothave a special test mode
that is selected. The PCTunesoftware automatically
selects the frequencies and other test conditions that
are required to perform the alignment. If the trans-
ceiver must be controlled manuallyto perform such
things as testing or troubleshooting,program tempo-
rary conventional channels.
6.1.2 TEST SETUP
Connect the test setup shown in Figure6-1. Addi-
tional information follows on equipmentin this setup.
Figure 6-1 Alignment Setup Diagram
Remote Programming Interface (RPI)
Signal Generator/ Wattmeter
50-ohm
Load
Comm. Monitor
Generator
Audio
PC-Compatible
Computer
Speaker Load
Part No. 023-9800-000 RPI-Transceiver Cable
Part No. 597-2002-123
680-Ohm