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3-6. RETURN VIDEO Cable
Compensation System Adjustment
3-6-1. Return Video Carrier Frequency
Adjustment
Rank:
C
Equipment:
Spectrum analyzer
To be extended:
DM-94 board
Preparation
• BARS button/MSU-700 → "OFF"
• TEST 2 button/MSU-700 → "ON"
• Connect VBS 1 OUT connector and RET 1 IN connector
on CCU-700A/700AP rear panel with BNC cable.
Test point:
TP21 (GND: E11)/DM-94 board
Adjusting point:
1CV1 (RET FREQ)/DM-94 board
69.000 ±0.005 MHz
Specification:
SYNC section
69.0MHz
CENT FREQ: 69.0MHz
FFEQ SPAN: 5.0MHz
CCU-700 A
CCU-700AP
3-6. RETURN VIDEO Cable Compensation System Adjustment
3-6-2. Return Video Deviation Adjustment
Rank:
C
Equipment:
Spectrum analyzer
To be extended:
DM-94 board
Preparation
• BARS button/MSU-700 → "OFF"
• TEST 2 button/MSU-700 → "ON"
• Connect VBS 1 OUT connector and RET 1 IN connector
on CCU-700A/700AP rear panel with BNC cable.
Test point:
TP21 (GND: E11)/DM-94 board
Adjusting point:
1RV20 (RET DEV)/DM-94 board
T = 2.000 ±0.005 MHz
Specification:
CENT FREQ: 69.0MHz
FFEQ SPAN: 5.0MHz
T
69.0MHz
3-33
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