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[Video Signal Circuit]
3. White Balance (sRGB)
Measuring
---
instrument
Test point
---
EXT trigger
---
Measurement
---
range
Input signal
shown in the Table 1, 2
Input terminal
COMPUTER IN terminal
Model
SD200U
XD200U
Table 1
No.
Pattern
12
White 50%
Table 2
Adjustment purpose
Symptom when
incorrectly adjusted
* Make this adjustment only when a monochrome picture has color tints
remarkably.
* Enter the adjustment commands and adjustment values of the decimal number in
capital alphanumeric letters.
* Carry out this adjustment after running the product for 2 minutes or more
supplying the specified test signal to it.
1. Connect this PROJECTOR with a personal computer (with Microsoft
Windows
2. Start Microsoft
3. Start the communication program [Hyper Terminal] in Microsoft
Signal
95/98/Me to open the window. (For setting, refer to Hyper Terminal setting on
SVGA
P.2)
XGA
4. Set the following items on the picture menu.
5. Project a picture on the screen.
6. Supply a signal (White 50%, No. 12).
7. Enter the adjustment commands of red, green or blue so that the color tints at
the screen center disappear.
Increase the adjustment value to deepen the color adjusted, and decrease it to
lighten the color.
Optimum adjustment range (reference) x=0.313±0.010
Red (Red Contrast)
8. Enter the adjustment command [00 ~ 821
adjust the red to be optimum. Enter [+00]~[+33] to
(*1) When the sent command is displayed, sending is accomplished correctly.
The current value is confirmed by sending the command without entering
any value to
9. When a command is returned, the setting value is automatically saved in the
EEPROM.
Green (Green Contrast)
10. Enter the adjustment command [00 ~ 822
adjust the green to be optimum. Enter [+00]~[+33] to
(*1)
11. When a command is returned, the setting value is automatically saved in the
EEPROM.
Blue (Blue Contrast)
12. Enter the adjustment command [00 ~ 823
adjust the blue to be optimum. Enter [+00]~[+33] to
13. When a command is returned, the setting value is automatically saved in the
EEPROM.
The best white balance of picture. (sRGB)
Monochrome picture has a color tint.
95/98/Me Operating System). (Refer to the figure on P.1)
Windows
95/98/Me in the personal computer.
CONTRAST . . . . . . . . . . . . . . .0
BRIGHTNESS . . . . . . . . . . . . .0
sRGB . . . . . . . . . . . . . . . . . . .ON
COLOR TEMP . . . . .STANDARD
.
- 5 -
Windows
y=0.335±0.015
] to the Hyper Terminal window to
for optimum red.
] to the Hyper Terminal window to
for optimum green.
] to the Hyper Terminal window to
for optimum blue. (*1)
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