Nikon RADIUS CM200 - Manual (Page 41)

RF Test Mode 3-5
Table 3-6 Receiver Performance Checks
* See Tables 3-4.
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:
± 186 Hz VHF1
± 200 Hz VHF2
± 568 Hz UHF2
± 600 Hz UHF3
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
<0.3
µ V
Noise
Squelch
Threshold
(only radios
with
conventiona
l 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 <0.25
µ V.
Preferred SINAD =
9-10dB