4-10
CCU-TX7 (E)/V1
4-2-16. R-Y/B-Y OUT Level Adjustment
Equipment
:
Oscilloscope
To be extended :
ES-20 board
Preparation :
.
Select the BARS mode on the RCP-TX7 or COU-TX7.
.
S800 (R/G/B, Y/R-Y/B-Y, Y/C)/ES-20 board
→
"Y/R-Y/B-Y" (Center position)
.
R/R-Y/C1 OUT connector/CCU rear panel
→
"75
Z
termination"
.
B/B-Y1 OUT connector/CCU rear panel
→
"75
Z
termination"
Adjustment Procedure :
ES-20 board [For NTSC (UC)]
Test point
Adj. point
Specifications
(GND : pin 91)
R-Y
pin 92
1
RV811
A = 700
±
5 mV p-p
B-Y
pin 90
1
RV812
B = 700
±
5 mV p-p
ES-20 board [For PAL]
Test point
Adj. point
Specifications
(GND : pin 91)
R-Y
pin 92
1
RV811
A = 525
±
5 mV p-p
B-Y
pin 90
1
RV812
B = 525
±
5 mV p-p
4-2-15. Color Vector Adjustment
Equipment
:
Vectorscope, Waveform monitor
To be extended :
ES-20 board
Preparation :
.
GAIN Switch/vectorscope
→
"
75%
CAL"
.
Adjust the PHASE control on the vectorscope so that the
burst spot is aligned to the 75
%
axis.
.
Select the BARS mode on the RCP-TX7 or COU-TX7.
Test point
:
VBS 1 OUT connector/ CCU rear panel
Adjustment Procedure :
1. Adjust
1
RV806 (BURST LEVEL)/ES-20 board so that
the burst spot is located at 75
%
scale mark on the
vectorscope screen.
2. Adjust the following adjusting controls so that all
luminance points are inside the respective "
4
" mark on
the vectorscope.
1
RV807 (BURST PHASE)/ES-20 board
1
RV808 ((U) LEVEL)/ES-20 board
1
RV810 (CHROMA LEVEL)/ES-20 board
1
FL800 (QUAD)/ES-20 board
3. Repeat procedure 1 and 2 several times.
[For NTSC]
[For PAL]
Cy
mg
U
B
b
M
G
cy
V
75%
100%
R
g
Y
L
yl
G
r
R
B
Y
L
G
Cy
g
M
G
A
R-Y OUT
B-Y OUT
B