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HCD-DZ770W
QQ
3 7 63 1515 0
DIAT SIGNAL RF LEVEL ADJUSTMENT
This adjustment is performed in order to adjust the transmission
distance of RF signal for DIAT communication.
Connection:
oscilloscope
TX board
TP815
Procedure:
1. Connect the oscilloscope to TP815 and GND on the TX board.
2. Connect DIR-T1 to DIR-T1 jack (J801).
3. Adjust RV801 on the TX board so that the center of waveform
becomes 1.0 Vp-p.
4. Confirm trigger is locked.
5. Adjust RV801 on the TX board so that the center of waveform
becomes 2.2 to 2.4 Vp-p.
RF Signal Reference Waveform
VOLT/DIV : 500 mV
TIME/DIV : 500 ns
TE
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SECTION 5
ELECTRICAL ADJUSTMENT
level : 2.2 to 2.4 Vp-p
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2 9
8
Adjustment Location:
– TX Board (SIDE A) –
RV801
TP815
Q Q
3
6 7
1 3
1 5
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
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