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Test Mode
Test Name
Communications Analyzer
Reference
Mode: PWR MON
Frequency
4th channel test frequency*
Monitor: Frequency error
Input at RF In/Out
Power RF
As above
Voice
Mode: PWR MON
Modulation
4th channel test frequency*
atten to -70, input to RF In/Out
Monitor: DVM, AC Volts
Set 1kHz Mod Out level for
0.025Vrms at test set,
80mVrms at AC/DC test set jack
Voice
Mode: PWR MON
Modulation
4th channel test frequency*
(internal)
atten to -70, input to RF In/Out
High-Speed
As above
Data
Modulation***
DTMF
As above,
Modulation
4th channel test frequency*
PL/DPL
As above
Modulation
4th channel test frequency*
BW to narrow
*** MDC
* See Table 4-4 on page 4-3.
Table 4-6 Transmitter Performance Checks
Radio
TEST MODE,
Test Channel 4
carrier squelch
As above
As above
TEST MODE,
Test Channel 4
carrier squelch
output at
antenna
TEST MODE,
Test Channel 4
high speed
output at
antenna
TEST MODE,
Test Channel 4
DTMF output at
antenna
TEST MODE,
Test Channel 4
TPL
DPL
Test Set
PTT to
Frequency error to be
continuous
±200 Hz VHF
(during the
±600 Hz UHF
performance
check)
As above
Refer to Maintenance
Specifications
As above, meter
Deviation:
selector to mic
VHF, UHF:
≥
4.0 kHz
≤
but
(25 kHz Ch Sp).
Remove
Press PTT switch on
modulation input
radio. Say "four" loudly
into the radio mic.
Measure deviation:
VHF, UHF:
≥
4.0 kHz
≤
but
(25 kHz Ch Sp)
PTT to
Deviation:
continuous
VHF, UHF:
≥
(during the
2.5 kHz
≤
performance
but
check).
(25 kHz Ch Sp)
As above
Deviation:
VHF, UHF:
≥
3.05 kHz but
kHz (25 kHz Ch Sp)
As above
Deviation:
VHF, UHF:
≥
500Hz
≤
but
(25 kHz Ch Sp).
4-5
Comments
5.0 kHz
5.0 kHz
3.5 kHz
≤
3.45
1000Hz
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