67
NTSC/PAL HIGH-LIGHT/LOW-LIGHT WHITE BALANCE ADJUSTMENTS
Measuring Instruments
Signal generator (10-step gray scale signal)
Color temperature meter
Card (Slot)
NTSC/PAL Video Input Card (Slot 2)
Test Points
Adjustment Points
W*01 (Drive (R)), W*03 (Drive (B)), W*04 (Cut Off (R)),
W*05 (Cut Off (G)), W*06 (Cut Off (B)) [Service Menu]
Notes: • Perform the following adjustments after completing the 1080/60i White Balance (High-Light, Low-Light) Adjustments.
• Set the COLOR TEM./BAL. data in the Setup Menu to “00”.
• The values adjusted with WO (see the description of the High-Light White Balance adjustment) become the reference values for
the high-light white balance adjustment. When this data is changed, it is required to re-adjust the high-light white balance data
of all of the adjustment signals (Component, NTSC and PAL).
• The values adjusted with WP (see the description of the Low-Light White Balance adjustment) become the reference values for
the low-light white balance adjustment. When this data is changed, it is required to re-adjust the low-light white balance data of
all of the adjustment signals (Component, NTSC and PAL).
<HIGH: D9300>
1. Apply the NTSC 10-step gray scale signal to INPUT C (Terminal VIDEO1 of the NTSC/PAL Video Input Card).
2. Set COLOR TEMP. of “COLOR TEMP./BAL.” in the Setup Menu to HIGH.
3. Set the PHASE, CHROMA, BRIGHT and CONTRAST potentiometers on the front panel to the center click positions.
4. Adjust WA01 and WA03 in the Service Menu using the color temperature meter so that the color temperature is set as shown below.
(Do not touch WA02.)
Color temperature : HIGH (D9300). x = 0.283, y = 0.297 (Reference value)
5. Ensure that the white balance tracking is correct from the gray scale steps with lower color temperatures to those with higher color temperatures.
If the white balance tracking is deviated in darker steps, adjust WA04 to WA06 (Low-Light) to correct it.
(Do not set the values of WA04 to WA06 no more than “50”.)
<LOW: D65>
6. Set COLOR TEMP. of “COLOR TEMP./BAL.” in the Setup Menu to LOW.
7. Adjust WB01 and WB03 in the Service Menu using the color temperature meter so that the color temperature is set as shown below.
(Do not touch WB02.)
Color temperature : LOW (D65). x = 0.313, y = 0.329 (Reference value)
8. Ensure that the white balance tracking is correct from the gray scale steps with lower color temperatures to those with higher color temperatures.
If the white balance tracking is deviated in darker steps, adjust WB04 to WB06 (Low-Light) to correct it.
(Do not set the values of WB04 to WB06 no more than “50”.)
9. Vary the adjustment signal and adjustment data, and re-perform adjustments in steps 1 to 8 above (see Table 20).
Table 20
Adjustment Signal
Function
Adjustment Data
R
G
B
NTSC (Common to VIDEO and Y/C)
Drive
WA01
—
WA03
[HIGH : D9300]
Cut off
WA04
WA05
WA06
NTSC (Common to VIDEO and Y/C)
Drive
WB01
—
WB03
[LOW : D65]
Cut off
WB04
WB05
WB06
PAL (Common to VIDEO and Y/C)
Drive
WC01
—
WC03
[HIGH : D9300]
Cut off
WC04
WC05
WC06
PAL (Common to VIDEO and Y/C)
Drive
WD01
—
WD03
[LOW : D65]
Cut off
WD04
WD05
WD06
Summary of Contents for BT-H1700P
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