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3-6. RETURN VIDEO Cable Compensation System Adjustment
3-6-3. Return Video Mix Ratio Adjustment
Rank:
B
Equipment:
Oscilloscope, Video signal generator
To be extended:
DM-94 board
Preparation
• BARS button/MSU-700 → "ON"
• Make a connection of the CCU rear panel as shown.
• MIX VF switch/BVP-700/700P rear panel → "ON"
Out put of test signal genelator
signal : White 100%(100% Flat Field)
RET1
75
RET2
Test point:
TP20 (GND: E11)/DM-94 board
1RV19 (RET MIX)/DM-94 board
Adjusting point:
A = B ±20 mV p-p (at the factory)
Specification:
(The ratio A:B can be variable the
range from 0:100 to 75:25. Adjust
according to the establishment
condition of the customer side.)
[For NTSC]
A
B
Note:
After adjustment, set the MIX VF
switch/BVP rear panel to "OFF".
3-34
with SYNC. 1Vp-p/75
1Vp-p
[For PAL]
A
B
E6
E15
RV8
E5
TP26
RV7
TP10
E10
RV19
TX
TP9
S5
RV24
RX
RV20
TP20
RV3
TP6
E11
RV21
TP8
RV4
TP5
CV1
TP7
*
TP4
E2
TP22
CV3
TP2
TX
CV2
TP3
S6
LV2
RX
*
RV1
TP21
TP22
E13
Y AGC COUNT
E1
RV22
LV3
TP21
RV23
E3
TP17
RV9
E14
RV17
TP19
TP11
-
5
+12
-
12
+5
DM
-
Y
R
Y
GND
-
R
Y
-
B
Y
(PANEL SIDE)
DM-94 BOARD (COMPONENT SIDE)
E9
TP23
TP18
RV18
TP24
E16
TP12
TP25
RV16
TP16
RV15
TP15
RV6
RV14
RV13
E8
RV11
RV5
TP14
E12
RV2
ON
S4
RV10
LV1
TP13
TP1
E7
ON
E4
S3
S1
MAN
AUTO
S2
CABLE
LENGTH
RV12
-
Y
B
Y
SUFFIX-12 ONLY
*
CCU-700A
CCU-700AP
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