Service manual

7-1
April 2001
Part No. 001-9800-203
ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
Figure 7-1 Alignment Setup
Ign Sense
Remote Programming Interface (RPI)
13.6 VDC
Power Supply
Signal Generator/
Wattmeter
50-ohm
Load
Comm. Monitor
Generator
Audio
(Optional)
Part No. 023-9800-000
PC-Compatible
Computer
4.7-ohm
Speaker Load
7.1 GENERAL
7.1.1 INTRODUCTION
The following alignment should be performed if
repairs are made that could affect the factory align-
ment. In addition, before a transceiver is initially
placed in service, the performance tests in Sections 7.4
and 7.5 should be performed.
Depending on the model, there are only two,
three, or four adjustments that are made manually. All
others are set digitally by the microcontroller and then
the settings are stored in memory. Since the manual
adjustments seldom need to be reset, the transceiver
can usually be aligned without removing the covers.
To perform transceiver alignment, special Tune
software (see Section 7.2) and the same basic
computer/RPI setup used to program personality
information are required. This equipment is shown in
the above illustration and described in Section 4.1.
Only Remote Programming Interface, Part No. 023-
9800-000, can be used for tuning because it is the only
RPI that has the miniature phone jack for injecting the
microphone audio signal.
7.1.2 TEST MODE
NOTE: The test mode is required only for the perfor-
mance tests described in Sections 7.4 and 7.5.
To select the test mode, turn power on with the
following option switch(es) pressed:
Low Tier Models
- Top (A/D) switch
High Tier Models
- Top two switches (to right of
display)
SECTION 7 ALIGNMENT PROCEDURE AND PERFORMANCE TESTS