HYT TM-800K, Service Manual

Page: 87 / 128

TM-800K Service Manual
85
Transmitter
Measurement Adjustment
Item Condition
Test Instrument Terminal Part Method
Specification
/Remarks
4. TX
Frequency
Enter adjustment
item “1”, each Ch
corresponds to a
specific TX Freq
Radio
Communication
Test Set
ANT
Adjust
software
settings
Adjust to CH
frequency Error
<50Hz
5. TX
Power
Each Ch
corresponds to a
specific TX Freq,
enter adjustment
item “2”, adjust
H/M/L power
Radio
Communication
Test Set
Ammeter
ANT
Adjust
software
setting ( first
value is 220 )
and VR101,
press
[ PF6 ]
to save and
enters the
next item.
Po=26±1.0W
I
≤ 8.0A
Check
Power
Current
3.9 ± 0.1KHz (W)
3.1 ± 0.1KHz (M)
6. Max.
Deviation
Each Ch
corresponds to a
specific TX Freq,
enter adjustment
item “3”, turn to
CH (C), CH (L),
CH (H), CH (mC),
CH (nL), CH (nH),
CH (nL)
Radio
Communication
Test Set
FILTER:
0.05-15KHz
AF:1KHz
50mV
ANT
MIC
Jack
Adjust
software
settings,
press
[ PF6 ]
to save and
enters the
next item
1.9 ± 0.1KHz (N)
Check
deviation
7.
Modulation
Sensitivity
2.6 - 3.4KHz (W)
2.2 - 2.6KHz (M)
1.3 - 1.7KHz (N)
8.
Modulation
Distortion
1. Each Ch
corresponds to a
specific TX Freq
Radio
Communication
Test Set
FILTER:
0.05-15KHz
AF:1KHz 7mV
ANT
MIC
Jack
≤ 3%
Check
9. CDCSS
Balance
Each Ch
corresponds to a
specific TX Freq,
enter adjustment
item “4” Radio
Communication
Test Set
FILTER
LPF: 300Hz
ANT
Change
CDCSS
settings with
Selector
Knob
Check
waveform
10. CTCSS
Deviation
Each Ch
corresponds to a
specific TX Freq,
enter adjustment
item “5”, adjust
67Hz / 127.3Hz /
254.1Hz CTCSS
Radio
Communication
Test Set
FILTER
LPF: 300Hz
ANT
Change
CTCSS
settings with
Selector
Knob
Adjust deviation to
0.75KHz±0.10KHz
(W)
0.60KHz±0.05KHz
(M)
0.37KHz±0.05KHz
(N)