DR600 Service Manual
Tx lock
voltage
testing
Tx board
TP100
1. Turn on the repeater.
2. Set HP8921 to TX mode.
3. Connect TX port to HP8921 RF high power input
port.
4. Enter computer modulation mode.
5. Click Tx low power test points to test lock voltage
0.5V
≤
CV voltage
≤
4.5V
Rx lock
voltage
test
Rx board
TP100
1. Turn on the repeater.
2. Set HP8921 to TXmode.
3. Connect TX port to HP8921 RF high power input
port
4. Enter computer modulation mode.
5. Click Rx sensitivity test points to test lock voltage
0.5V
≤
CV voltage
≤
4.5V
6.2.2 Tx Adjustment
Subject
Modulation Procedure
Standard
Tx high power
1. Enter pc tuning mode.
2. Enter modulation mode”High Power”.
3. Adjust PC software value; observe power value on the
integrated tester.
4. Adjust to test power: 40
±
2W.
5. Modulate the frequency one by one.
40
±
5W
Tx low power
1. Enter computer modulation mode.
2. Enter modulation mode “Low Power”.
3. Adjust PC software value; observe power value on the
integrated tester.
4. Adjust to test power: 20W.
5. Modulate the frequency one by one.
20W
±
1.5db
Low frequency
modulation
frequency
deviation
1. Enter computer modulation mode.
2. Click frequency F1 to F6.
3. When AF Freq is 0.1kHz, observe FM Deviation on the
integrated tester, and modulate PC software value.
4. Adjust FM Deviation to 5.0
±
0.05kHz.
5. Click “ok” to save.
4.95kHz-5.05kHz
High frequency
modulation
frequency
deviation
1. Enter computer modulation mode.
2. Click Frequency F1 to F6.
3. When AF Freq is 6.0 kHz, observe FM Deviation on the
integrated tester, and modulate PC software value.
4. modulate FM Deviationto5.0
±
0.05kHz.
4.95kHz-5.05kHz
41
Summary of Contents for DR600
Page 1: ......
Page 37: ...DR600 Service Manual 33 ...
Page 110: ...DR600 Service Manual Figure 2 Rx Module Bottom Board PCB View 106 ...
Page 111: ...DR600 Service Manual Figure 3 Tx Module Top Board PCB View 107 ...
Page 113: ...DR600 Service Manual Figure 6 Baseband Mainboard Top Board PCB View 109 ...
Page 114: ...DR600 Service Manual Figure 7 Baseband Mainboard Bottom Board PCB View 110 ...
Page 116: ...DR600 Service Manual Figure 10 Power Board Top Board PCB View 112 ...
Page 118: ...DR600 Service Manual Figure 13 Enternet Board Top Board PCB View 114 ...
Page 119: ...DR600 Service Manual Figure 14 Enternet Board Bop Board PCB View 115 ...
Page 150: ...DR600 Service Manual Figure 21 Baseband Mainboard Schematic Diagram 146 ...