White Balance Adjustment; White Balance Adjustment Of Input-A; White Balance Adjustment Of Video - Sony VPD-MX10 Service Manual

2-3. White Balance Adjustment

2-3-1. White Balance Adjustment of INPUT-A

1) HIGH Mode of INPUT-A
1. Input the 80 IRE FLAT FIELD signal (XGA signal) to
INPUT-A.
2. GAIN R and B in the HIGH Mode of W/B an adjusted
so that the chromaticity (x, y) may become the follow-
ing standard value.
Standard value (x, y) = (0.290 ± 0.002, 0.330 ± 0.004)
3. Set the INPUT signal to the 20 IRE.
4. BIAS R and B in the HIGH Mode of W/B an adjusted
so that the chromaticity (x, y) may become the follow-
ing standard value.
Standard value (x, y) = (0.290 ± 0.002, 0.330 ± 0.004)
5. It carries out by repeating the above-mentioned steps 2
and 4 and memory of the adjustment value is carried
out.
2) LOW Mode of INPUT-A
1. The data in the HIGH Mode of 2) is copied.
2. Input the 80 IRE FLAT FIELD signal (XGA signal) to
INPUT-A.
3. The following value is written in GAIN R, G and B of
data value which HIGH Mode copied, and the memory
of the chromaticity (xlow, ylow) is carried out.
Write-in value
4. Set the INPUT signal to the 20 IRE.
5. BIAS G and B in the HIGH Mode of W/B an adjusted
so that the chromaticity (x, y) may become the follow-
ing standard value.
Standard value (x, y) = (xlow ±0.002, ylow ± 0.004)
6. Set the INPUT signal to the 80 IRE.
2-2
GAIN R : +15step
GAIN G : _15step
GAIN B : ±0step
7. BIAS G and B in the HIGH Mode of W/B an adjusted
so that the chromaticity (x, y) may become the follow-
ing standard value.
Standard value (x, y) = (xlow ± 0.002, ylow ± 0.004)
8. It carries out by repeating the above-mentioned steps 5
and 7 and memory of the adjustment value is carried
out.

2-3-2. White Balance Adjustment of VIDEO

1) HIGH Mode of VIDEO
1. Input the 15K component signal (80 IRE FLAT
FIELD) to INPUT-A.
2. W/B GAIN and BIAS value are made into the same
value as the adjustment of the above 2).
3. The memory only of the following value is written in
and carried out to the value of the above-mentioned
step 2.
Write-in value
2) LOW Mode of VIDEO
1. Set the INPUT signal to the 25 IRE.
2. W/B GAIN and BIAS value are made into the same
value as the adjustment of the above 1).
3. The memory only of the following value is written in
and carried out to the value of the above-mentioned
step 2.
Write-in value
GAIN G : _15step
BIAS G : _5step
GAIN G : _15step
BIAS G : _5step
VPD-MX10