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120x
Hardware Introduction
120x do not allows keypad controlled testing.
Please refer to the RadioComm section for
functions and recommended equipment setup
to use when testing.
Automatic Call -Processing Tests
M o s t c o m m u n ic a t io n s a n a l y z e rs c a n s im u la t e
s ite in order to perform automatic call
processing tests. Automatic call processing
tests can be performed while the phone is in its
power -up state. However, it is useful to do the
test s with the phone in Test Mode Status
Display.
R e f e r t o t h e c o m m u n ic a t io n s a n a ly z e r' s m a n u a l
f o r d e t a ils a b ou t performing call proc essing
tests. The following call processing test
sequence is recommended:
1. Inbound call, analog mode
2. Outbound call, analog mode
3. Analog-to -A nalog channel handof f
4. Analog-to -Digital channel handoff
5. Inbound call, digital mode
6. Outbound call, digital mode
7. Digital -to -Digital channel handoff
8. Digital -to -Analog channel handoff
Handoff s should be performed between low,
middle, and high frequency channels.
Analog Test Measurements
? RX Sensitivity (SINAD)
? RX A udio Distortion
? TX P ower Out
? TX Frequency Error
? TX Audio Distortion
? TX Maximum Deviation
? TX S AT Deviation
? TX ST Deviation
Connections for performing Tests
Test Procedure
Digital Test Measurements
? Digital RX Sensitivity (FER)
? Digital P ower O ut
? TX Frequency Error
? W aveform Quality (Rho)
The analog and digital parameters are stored
in EEP ROM on the Transceiver Board. Each
transceiver is shipped from the factory with
these parameters already calibrated. However,
if a board is repa ired, these parameters should
be measured and, if necessary, adjusted.
Checking and adjusting calibration parameters
is also useful as a troubleshooting/diagnostic
tool to isolate defective assemblies.
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Troubleshooting
