Motorola CM360 Service Manual

3-8 TRANSCEIVER PERFORMANCE TESTING
Table 3-9 Receiver Performance Checks
* See Tables 3-4 & 3.7
Test Name
Communications
Analyzer
Radio Test Set Comment
Reference
Frequency
Mode: PWR MON
4th channel test frequency*
Monitor: Frequency error
Input at RF In/Out
TEST MODE,
Test Channel 4
carrier squelch
output at
antenna
PTT to
continuous
(during the
performance
check)
Frequency
error to be
±150 Hz VHF
±150 Hz UHF
±150 Hz MB
Rated Audio Mode: GEN
Output level: 1.0mV RF
4th channel test frequency*
Mod: 1kHz tone at
3kHz deviation
Monitor: DVM: AC Volts
TEST MODE
Test Channel 4
carrier squelch
PTT to OFF
(center), meter
selector to
Audio PA
Set volume
control to
8.10Vrms
Distortion As above, except to
distortion
As above As above Distortion
<5.0%
Sensitivity
(SINAD)
As above, except SINAD,
lower the RF level for 12dB
SINAD.
As above PTT to OFF
(center)
RF input to be
<0.3µV
Noise Squelch
Threshold
(only radios
with
conventional
system need
to be tested)
RF level set to 1mV RF As above PTT to OFF
(center), meter
selection to
Audio PA,
spkr/ load to
speaker
Set volume
control to
3.16Vrms
As above, except change
frequency to a conventional
system. Raise RF level from
zero until radio unsquelches.
out of TEST
MODE; select
a conventional
system
As above Unsquelch to
occur at
<0.25µV.
Preferred
SINAD =
9-10dB

Motorola CM360 Specifications

General

Brand	Motorola
Model	CM360
Category	Radio
Language	English