2-12
VPL-CS5A/CS6/CX6/EX1
2-5. White Balance Adjustment
Preparation before adjustment
1.
Input the 100 IRE flat field signal to the INPUT-A
connector and allow the warm-up of 10 minutes aging
at a minimum.
2.
Enter the Service Mode.
Press the keys in the following order.
[ENTER]
→
[ENTER]
→
↑
→
↓
→
[ENTER]
.
The message [Do you want to enter the Service Mode?
Yes :
↑
No :
↓
] appears.
Select [Yes :
↑
].
[Supplementary information: How to Exit the
Service Mode]
Perform the step 2 KEY operation.
The message [Do you want to return to the User Mode?]
appears.
Select [Yes :
↑
].
2-5-1. HIGH Mode of INPUT-A
Connect the10-step signal to the INPUT-A connector and
measure the chromaticities at each brightness.
If chromaticities are different at each brightness, perform
the following adjustment.
1.
Input the 100 IRE flat field signal to the INPUT-A
connector.
2.
Measure the chromaticity (x, y).
3.
Input the 80 IRE flat field signal.
4.
Adjust the GAIN R and GAIN B in the HIGH mode of
W/B until the chromaticity (x, y) that is measured at
step 2 is obtained.
5.
Input the 30 IRE flat field signal.
6.
Adjust the BIAS R and BIAS B in the HIGH mode of
W/B until the chromaticity (x, y) that is measured at
step 2 is obtained.
7.
Repeat steps 3 to 6 until the chromaticity (x
±
0.002, y
±
0.004) with reference to the chromaticity (x, y) that
is measured at step 2 is obtained.
2-5-2. LOW Mode of INPUT-A
1.
Input the 80 IRE flat field signal to the INPUT-A
connector.
2.
In the LOW mode of W/B, adjust the GAIN R for
+
15
higher than the value in the HIGH mode, adjust the
GAIN G for
_
_
_
_
_
25 lower than the value in the HIGH
mode and adjust GAIN B that is the same as the value
in the HIGH mode.
3.
Adjust BIAS R, BIAS B and BIAS G for the same
value as those of the HIGH mode.
4.
Measure the chromaticity (x, y).
5.
Input the 30 IRE flat field signal.
6.
Adjust the BIAS R and BIAS B in the LOW mode of
W/B until the chromaticity (x, y) that is measured at
step 4 is obtained.
7.
Input the 80 IRE flat field signal.
8.
Adjust the GAIN R and GAIN B in the LOW mode of
W/B until the chromaticity (x, y) that is measured at
step 4 is obtained.
9.
Repeat steps 5 to 8 until the chromaticity (x
±
0.002, y
±
0.004) with reference to the chromaticity (x, y) that
is measured at step 4 is obtained.
2-5-3. HIGH Mode of VIDEO
1.
Input the NTSC or PAL video signal to the input
connector.
2.
In the HIGH mode of W/B, adjust the GAIN R for
_
_
_
_
_
20 lower than the value in the INPUT-A HIGH
mode, adjust the GAIN G for
_
_
_
_
_
35 lower than the value
in the INPUT-A HIGH mode and adjust GAIN B that
is the
_
_
_
_
_
20 lower than the value in the INPUT-A HIGH
mode.
3.
Adjust BIAS G for
_
_
_
_
_
5 lower than the value in the
INPUT-A HIGH mode, adjust the BIAS R and BIAS
B for the same value as those of the INPUT-A HIGH
mode.
2-5-4. LOW Mode of VIDEO
1.
Input the NTSC or PAL video signal to the input
connector.
2.
In the LOW mode of W/B, adjust the GAIN R for
_
_
_
_
_
20
lower than the value in the INPUT-A LOW mode,
adjust the GAIN G for
_
_
_
_
_
35 lower than the value in the
INPUT-A LOW mode and adjust GAIN B that is the
_
_
_
_
_
20 lower than the value in the INPUT-A LOW mode.
3.
Adjust BIAS G for
_
_
_
_
_
5 lower than the value in the
INPUT-A LOW mode, adjust the BIAS R and BIAS B
for the same value as those of the INPUT-A HIGH
mode.
