Sony Ipela SNC-CS50N, Service Manual

Page: 23 / 76

2-7 (E)
SNC-CS50N/CS50P
2-2-5. WB Adjustment (Preset at 3200 K)
1. Set the lens iris so that white level E of VIDEO OUT
satisfies the specifications.
Object: 100% white pattern
Measuring equipment: Waveform monitor
Specifications: E = 65
±
3 IRE (NTSC)
E = 460
±
21 mV (PAL)
Waveform monitor
2. Change “R Gain” and “B Gain” values alternately and
adjust so that the white luminescent spot on a
vectorscope satisfies the specifications.
Object: 100% white pattern
Measuring equipment: Vectorscope
Adjustment item: R gain/B gain
Specifications: The white luminescent spot on a
vectorscope must coincide with
the origin of a vectorscope.
n
Press the
[Tab]
key or
[Shift]
+
[Tab]
key and
activate the adjustment item when changing an
adjustment item value.
Vectorscope
E
R
MG
G
CY
B
R-Y
B-Y
YL
J-6433-540-A
CB
Origin
White level
F
2-2-6. Color Reproduction Adjustment
1. Shoot a color-bar cart using this unit.
2. Set the lens iris so that white level F of VIDEO
OUT satisfies the specifications.
Object:
Color-bar chart
Measuring equipment: Waveform monitor
Specifications:
F = 90.0
±
2.5 IRE (NTSC)
F = 640
±
18 mV (PAL)
Waveform monitor
3. Change “RY Gain”, “BY Gain”, “RY Hue”, and “BY
Hue” values alternately and adjust so that the R (red)
and YL (yellow) luminescent spots on a vectorscope
satisfy the specifications.
Object:
Color-bar chart
Measuring equipment: Vectorscope
Adjustment item:
RY gain/BY gain/RY hue/BY hue
Specifications:
The R (red) and YL (yellow) luminescent spots on a
vectorscope must put be in each color reproduction
frame (small frame).
n
Press the
[Tab]
key or
[Shift]
+
[Tab]
key and
activate the adjustment item when changing an
adjustment item value.
Vectorscope
4. Confirm that all luminescent spots on a vectorscope
are put in each color reproduction frame.
R
MG
G
CY
B
R-Y
B-Y
YL
J-6433-540-A
CB
Put in each color
reproduction frame
(small frame).