Transceiver Performance Testing 4-5
4.4 Receiver and Transmitter Performance Tests
The receiver and transmitter performance tests are contained in Tables 4-4 and 4-5 respectively.
Refer to Chapter 5, Figure 5-1, for test equipment setup. Note that all test measurements are taken at
77
°F (25°C) and in conventional or trunked models.
Table 4-4. Receiver Performance Checks
* see Table 4-3
Test Name Service Monitor Radio Test Set Comments
Rated Audio Mode: GEN
Output level: 1.0 mV RF
4th channel test frequency*
Mod: 1k Hz tone at
3 kHz 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
3.16 Vrms
Distortion As above, except to distor-
tion
As above As above Distortion 3.0%
Typical
Sensitivity
(SINAD)
As above, except SINAD,
lower the RF level for 12 dB
SINAD.
As above PTT to OFF
(center)
RF input to be 0.3µV
(200 MHz models)
0.35µV (700 MHz
models) or less.
Noise
Squelch
Threshold
(only radios
with conven-
tional sys-
tem need to
be tested)
RF level set to 1 mV RF As above PTT to OFF
(center), meter
selection to
Audio PA,
speaker/load to
speaker
Set volume control to
3.16 Vrms
As above, except change fre-
quency to a conventional
system. Raise RF level from
zero until radio unsquelches.
out of TEST
MODE; select
a conven-
tional system
As above Unsquelch to occur at
approximately 6-9 dB
SINAD
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