HP L1940T
35
13. White-Balance,Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding
White-Balance adjustment.
1. How to do the Chroma-7120 MEM .Channel setting
A. Reference to chroma 7120 user guide
B. Use “ SC” key and “ NEXT” key to modify xyY value and use “ID” key to modify the
TEXT description Following is the procedure to do white-balance adjust
2. Setting the color temp. You want
A. 9300 color:
9300 color temp. parameter is x = 283 ±20, y = 297 ±20, Y = 180 cd/m
2 ,
B. 6500K color:
6500K color temp. parameter is x = 313±20, y = 329 ±20, Y= 180 cd/m
2
)
C. sRGB color:
sRGB color temp. parameter is x = 313±20, y = 329 ±20, Y= 150 cd/m
2
)
3. Into factory mode of HP L1940T
[ Push “Auto Adjust” and “+ (plus)”and hold them at the same time ]+ [ Press power “Power” button untill
comes out “windows screen” ] =>then release all button,then press “Menu”button,wait untill the OSD menu
with Characters “F” come on the Screen of the monitor.
4. Bias adjustment:
Set the Contrast to 80
Adjust the Brightness
to 90.
5. Gain adjustment :
Move cursor to “-F-” and press MENU key
A. Adjus 9300k color-temperature
1. Switch the Chroma-7120 to 9300k channel.
2. The chroma 7120 will show x = 283±20, y = 297 ±20, Y= 180 cd/m
2
3. Switch the chroma-720 to RGB MODE (with press “MODE” button to change )
4. Adjust the RED of color 9300K on factory window until chroma 7120 indicator reached
the value R=100
5. Adjust the GREEN of color 9300K on factory window until chroma 7120 indicator reached
the value G=100
6. Adjust the BLUE of color 9300K on factory window until chroma 7120 indicator reached
the value B=100
7. Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the
tolerance =100±2
B. Adjust 6500K color-temperature
1. Switch the chroma-7120 to 6500K channel.
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