User Manual

TR-800 Service Manual
-30-
amplitude of the
analyzer, check the
duplex sensitivity.
≤10%@5W
Tx S/N: ≥42dB (wise)
≥37dB (narrow)
Max. Power output (without
duplexer):
45±2W(UHF)
50±2W(VHF)
Rx audio
output
Any
channel
without
tones
Communication
test set
J0103 /
Check the audio
output amplitude of
5 pin on the
accessory
connector
Audio output: ≥200mV
Repeater
Hang Time
Any
channel
Communication
test set
/ /
In the repeater
setup state,
terminate the signal
output of the
analyzer, check the
repeater hang time.
Repeater hang time: 2S
Linked audio
relay
Any
channel
without
tones
Communication
test set
Main radio
Tx
connector
RV0103
Adjust the audio
output amplitude of
the analyzer MIC to
120mVinto 3 pin of
J0103; adjust
RV0103 to obtain a
60% system
deviation, check
modulation
distortion and TX
S/N
Tx frequency deviation:
3.0±0.2kHz (wide)
1.5±0.1kHz (narrow)
Modulation distortion: ≤3%
Tx S/N: ≥45dB (wide)
≥40dB (narrow)
Repeater
Scan
Any
channel
Signal generation
or radio
/ /
Set SCAN key
active
Use signal generator or
portable transmitter to test
whether repeater scanning
works correctly and processes
retransmission, and repeat
testing on other channels.
c) Uni-directional Repeater Mode (reverse)
Make sure the TR-800 is in SETUP state and activate OPT function. The TR-800 operates on uni-directional
repeater mode with slave radio keys main radio to repeat transmission (backward direction). Correctly cable the test
ports to communication system analyzer before adjustment.
Measure Adjustment
Item Condition
Instrument Point Point Method
Specification/Remark