RTS DV 2400 Series, Service Manual

Page: 29 / 40

DV-2400
28
ADJUSTMENT
PCB Section
Item Condition
Measurement Adjustment Specifications
/Remarks Test equipment Terminal Parts Method
1. Setting 1) Power supply voltage
DC Power supply terminal : 13.8V
2. VCO lock
voltage
1) CH: TX high
Digital voltmeter TC2
CV201 5.5 V ±0.2V
2) CH: RX high CV200 5.5 V ±0.2V
3) CH: TX low
Check More than 0.6V
4) CH: RX low
Transmitter section
Item Condition
Measurement Adjustment Specifications
/Remarks
Test equipment Terminal Parts Method
1. Frequency 1) CH: TX center
2) Transmit
Frequency counter
ANT
Encoder
knob
Adjust to the frequency Within ±200Hz
2. Maximum
power
alignment
1) CH : TX high
2) Adjustment HEX value : FF
3) Transmit
Power meter
VR200 43W
3. High
power
1) CH : TX low
CH : TX low’
CH : TX center
CH : TX high’
CH : TX high
2) Transmit
Encoder
knob
40W
±
5.0W
4. Mid
power
1) CH : TX low
CH : TX low’
CH : TX center
CH : TX high’
CH : TX high
2) Transmit
25W
±
3W
5. Low
power
1) CH : TX low
CH : TX low’
CH : TX center
CH : TX high’
CH : TX high
2) Transmit
10W
±
2W
6. DCS
balance
1) CH : TX low (Wide)
CH : TX center (Wide/Narrow)
CH : TX high (Wide)
2) Transmit
Modulation analyzer
or Linear detector
(LPF : 3kHz)
Oscilloscope
Adjust the waveform as
below
7.Max
deviation
1) CH : TX low (Wide)
CH : TX center (Wide/Narrow)
CH : TX high (Wide)
2) AG : 1kHz/50mV
3) Transmit
Modulation
analyzer or linear
detector
(LPF15kHz)
Oscilloscope
AG
AF. V. M
ANT
MIC
±
4.3kHz (Wide)
±
2.1kHz (Narrow)
According to the large +,
–
±
200Hz
±
100Hz
8. MIC
sensitivity
1) CH : TX center (Wide/Narrow)
2) AG : 1kHz/4mV
3) Transmit
Check
±3kHz±0.2kHz:
Wide
±1.5kHz±0.1kHz:
Narrow