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MOTOROLA HT-1000 Service Manual: Table 9 Receiver Performance Checks

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COMMUNICATIONS
TEST NAME
Reference
Mode: PWR MON
Frequency
4th channel test frequency
Monitor: Frequency error
Input at RF In/Out
Rated Audio
Mode: GEN
Output level: 1.0mV RF
4th channel test frequency
Mod: 1kHz tone at
3kHz deviation (1.5kHz
deviation for 12.5kHz
system)
Monitor: DVM: AC Volts
Distortion
As above, except to
distortion
Sensitivity
As above, except SINAD,
(SINAD)
lower the RF level for 12dB
SINAD.
Noise Squelch
RF level set to 1mV RF
Threshold
(only radios
with
conventional
As above, except change
system need
frequency to a conventional
to be tested)
system. Raise RF level from
zero until radio unsquelches.
See Table 6 or Table 8 as applicable.

Table 9 Receiver Performance Checks

ANALYZER
TEST MODE,
4 CSQ
output at
antenna
TEST MODE,
4 CSQ
As above
As above
As above
out of TEST
MODE; select a
conventional
system
RADIO
TEST SET
PTT to continuous
during the
performance check)
PTT to OFF (center),
meter selector to
Audio PA
As above
PTT to OFF (center)
PTT to OFF (center),
meter selection to
Audio PA, spkr/load
to speaker
As above
COMMENTS
Frequency error to be
±150Hz
Set volume control to
3.74Vrms
Distortion < 3.0%
RF input to be < 0.35µV
Set volume control to
3.74Vrms
Unsquelch to occur at
< 0.25µV.
Preferred SINAD= 8-10dB
13

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This manual also for:

Jt-1000, Mt-2000, Mts-2000

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