Motorola ASTRO DIGITAL XTS 3000 series - Table 7 Receiver Performance Checks

10
- Press the left-hand M key on the top row of keys, “
131/1
” appears;
release, “
131/0
” appears.
- Press the center N key, “
132/1
” appears; release, “
132/0
” appears.
- Press the right-hand M key, “
133/1
” appears; release,
“
133/0
” appears.
Table 7 Receiver Performance Checks
Test Name System Analyzer Radio Test Set Comments
Reference
Frequency
Mode: PWR MON 4th
channel test frequency❖
Monitor: Frequency error.
Input at RF In/Out
TEST MODE,
4 CSQ output
at antenna
PTT to continuous
(during the
performance check)
Frequency error to
be ≤ ±1.2kHz
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,
4 CSQ
PTT to OFF (center);
meter selector to Audio
PA
Set volume control
to 3.74Vrms
Distortion As above, except to
distortion
As above As above Distortion < 3.0%
Sensitivity
(SINAD)
As above, except SINAD;
lower the RF level for 12dB
SINAD
As above PTT to OFF (center) RF input to be <
0.35µV
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 3.74Vrms
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 =
8-10dB
❖ See Table 6