Performance Checks
19
Table 9. Receiver Performance Checks
Test Name System Analyzer Radio Test Set Comments
Reference
Frequency
RF Control: Monitor
Meter: RF Display
Display: Bar Graphs
Freq: Selected radio TX freq.
TEST MODE
CSQ channel*
or
programmed
conventional
channel
PTT to continuous
(during the
performance check)
Frequency error to
be ≤ ±1.2kHz
Rated Audio RF Control: Gen
Output Level: -47 dBm
Freq: Selected radio RX freq.
Mod: 1kHz tone @ 3kHz dev.
Meter: AC Volts
As above PTT to OFF (center) Set volume
control to
3.74Vrms
Distortion As above, except
Meter: Ext Dist.
As above As above Distortion < 3.0%
Sensitivity
(SINAD)
As above, except
Meter: SINAD
As above As above RF input to be <
0.35µV
Noise Squelch
Threshold (only
radios with
conventional
system need to
be tested)
Set as for rated audio check Out of TEST
MODE; select a
conventional
system
As above Set volume
control to
3.74Vrms.
Set RF level to -
130 dBm and raise
until radio
unsquelches.
Unsquelch to
occur at < 0.25µV.
Preferred SINAD =
6-8dB
* See Table 8 on page 16.
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