2-5
VPL-GH10
2-3. White Balance Adjustment on
Servicing
Preparation
Set Picture Mode to “Cinema” and make the following
settings.
Contrast: 90
Bright: 50
Color: 55
Hue: 50
Sharpness: 10
NR: OFF
MPEG NR: OFF
Black Level Adjust: OFF
Gamma Correction: Gamma 3
Advanced Iris: OFF
Lamp Control: High
Color space: Normal
Set each GAIN and each BIAS for RGB to 128.
Bring the ZOOM position of the lens to the center.
Adjustment
High
Set Color Temp to “High”.
Input 1080/60i 20 IRE flat field (RGB 3 color) into the
DVI terminal and adjust BIAS of white balance for R and
B until the chromaticity (x20, y20) satisfies the specifica-
tion.
(x20, y20) = (0.284
±
0.002, 0.298
±
0.002)
Input 1080/60i 80 IRE flat field (RGB 3 color) into the
DVI terminal and adjust GAIN of white balance for B and
G until the chromaticity (x80, y80) satisfies the specifica-
tion.
(x80, y80) = (0.284
±
0.002, 0.298
±
0.002)
Repeat the adjustments at 80 IRE and 20 IRE until the
specification is satisfied.
Save the adjusted values.
Middle
Set Color Temp to “Middle”.
Input 1080/60i 20 IRE flat field (RGB 3 color) into the
DVI terminal and adjust BIAS of white balance for R and
B until the chromaticity (x20, y20) satisfies the specifica-
tion.
(x20, y20) = (0.294
±
0.002, 0.314
±
0.002)
Input 1080/60i 80 IRE flat field (RGB 3 color) into the
DVI terminal and adjust GAIN of white balance for B and
G until the chromaticity (x80, y80) satisfies the specifica-
tion.
(x80, y80) = (0.294
±
0.002, 0.314
±
0.002)
Repeat the adjustments at 80 IRE and 20 IRE until the
specification is satisfied.
Save the adjusted values.
Low
Set Color Temp to “Low”.
Input 1080/60i 20 IRE flat field (RGB 3 color) into the
DVI terminal and adjust BIAS of white balance for R and
B until the chromaticity (x20, y20) satisfies the specifica-
tion.
(x20, y20) = (0.313
±
0.002, 0.329
±
0.002)
Input 1080/60i 80 IRE flat field (RGB 3 color) into the
DVI terminal and adjust GAIN of white balance for B and
G until the chromaticity (x80, y80) satisfies the specifica-
tion.
(x80, y80) = (0.313
±
0.002, 0.329
±
0.002)
Repeat the adjustments at 80 IRE and 20 IRE until the
specification is satisfied.
Save the adjusted values.
