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Adjust VR406 so that the Luminance level becomes 700 ±
14 mV as shown in Fig. 4-9.
Press CH4 button on the Front Panel.
Observing the Waveform Monitor, fine adjust VR403 and
VR405 for the Buffer Amplifier U, VR408 and VR410 for
the Buffer Amplifier L so that the difference between
Buffer Amplifiers U and L and without flicker.
(6). RA Decoder Adjustment
Test Point:
Recording Output Jack
Adjust:
VR101 (RA C-GAIN)
VR102 (RA C-PHASE)
VR103 (RA PHASE 2)
VR404 (B-Y C-GAIN (U))
VR409 (B-Y C-GAIN (L))
T101 (RA PHASE 1)
Supply the Ramp (with carrier) signal to the Camera Input
1 Connector on the Rear Panel.
Set VR101 to VR103 to their mechanical center position.
Set the core of T101 becomes flat as the upper surface of
T101.
Press the VTR/Camera Selection button on the Front
Panel.
Adjust VR103 and T101 so that the vector positions on the
B-Y Axis of the Vectorscope as shown in Fig. 4-10.
+ 7
0
– 0
Fig. 4-8
700 ± 14 mV
300 ± 30 mV
Fig. 4-9
Rear Panel
Main Board
Main Board
Main Board
Main Board
Main Board
Main Board
B – Y
mV
Supply the Colour Bar signal to the Camera Input 1
Connector on the Rear Panel.
Connect the terminated Oscilloscope with 75Ω to the
Recording Output Jack on the Rear Panel.
Adjust VR101 so that the R-Y vector positions their
respective boxes as shown in Fig. 4-11.
Adjust VR404 so that the B-Y vector positions their
respective boxes as shown in Fig. 4-11.
Repeat adjustment VR103 and T101 and VR101 and
VR404 so that the Chroma vector positions their respec-
tive boxes as shown in Fig. 4-12 and the Chroma Phase
as shown in Table 4-1.
Press the CH1 button on the Front Panel.
Adjust VR409 so that the B-Y level of the Buffer Amplifier
L becomes correct gain.
36
cy
g
R
M
G
V
dø
20%
75%
Y
L
100%
dG
10°
b
0°
B
10°
yl
20%
dG
C
G
Y
mg
r
Fig. 4-10
cy
g
R
M
G
V
dø
20%
75%
Y
L
100%
dG
10°
b
0°
B
10°
yl
20%
dG
C
G
Y
mg
r
Fig. 4-11
cy
g
R
M
G
V
dø
20%
75%
Y
L
100%
dG
10°
b
0°
B
10°
yl
20%
dG
C
G
Y
mg
r
Fig. 4-12
Phase
Chroma
R
103 ± 5°
220 ± 7°
283 ± 7°
Cy
220 ± 7°
YL
167 ± 8°
155 ± 10°
Table 4-1
U
U
U
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