Motorola CP140 Basic Service Manual page 35

Performance Checks: RF 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 1 kHz Mod Out level for
0.025 Vrms at test set,
80m Vrms at AC/DC test set
jack
Voice Mode: PWR MON
Modulation
4th channel test frequency
(internal)
atten to -70, input to RF In/
Out
DTMF As above,
Modulation
4th channel test frequency
PL/DPL As above
Modulation
4th channel test frequency
BW to narrow
*. See Table 4-4
Table 4-6. Transmitter Performance Checks
Radio
TEST MODE,
Test Channel 4
*
carrier squelch
Output at
antenna
As above
As above
*
TEST MODE,
* Test Channel 4
carrier squelch
Output at
antenna
TEST MODE,
Test Channel 4
*
DTMF
Output at
antenna
TEST MODE,
* Test Channel 4
TPL
DPL
Test Set
PTT to continu- Frequency error to be
ous (during the ±200 Hz VHF
performance ±500 Hz UHF
check)
As above Refer to Maintenance
Specifications
As above, meter Deviation:
selector to mic VHF, UHF
≥
4.0 kHz but
kHz (25 kHz Ch Sp).
Remove modula- Press PTT switch on
tion input radio. Say "four" loudly
into the radio mic.
Measure deviation:
VHF, UHF
≥
4.0 kHz but
kHz (25 kHz Ch Sp)
As above Deviation:
VHF, UHF
but
(25 kHz Ch Sp)
As above Deviation:
VHF, UHF
but
(25 kHz Ch Sp).
4-5
Comments
≤
5.0
≤
5.0
≥
3.05 kHz
≤
3.45 kHz
≥
500Hz
≤
1000 Hz