37
White-Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white
balance adjustment.
Before started adjust white balance ,please setting the Chroma-7120
MEM. Channel 1 to 14000
color,
MEM. channel 2 to 12000
color,
MEM. channel 3 to 9300
color,
MEM. channel 4 to 8000
color, and
MEM.
channel 5 to 6500
color, ( our 14000 parameter is x = 266 ±
15, y = 270 ± 15, Y = 300 ± 7 cd/m2 ; 12000
parameter is x = 272 ± 15, y = 278 ± 15, Y = 300± 7 cd/m
2
;9300 parameter is x = 283 ± 15, y = 297 ± 15, Y
= 300± 7 cd/m
2
;8000 parameter is x = 295 ± 15, y = 305 ± 15, Y = 300± 7 cd/m
2
;6500 parameter is x = 313 ±
15, y = 329 ± 15, Y = 300± 7 cd/m2),
Color Temp. 14000 12000 9300 8000 6500
X 266 272 283 295 313
Y 270 278 297 305 329
Y 300 300 300 300 300
How to setting MEM. channel you can reference to Chroma-7120 user guide or simple use “
SC
” key and
“
NEXT
” key to modify x, y , Y value and use “
ID
” key to modify the TEXT description
Following is the procedure to do white-balance adjust
I. Press Number key 1
Æ
9
Æ
9
Æ
9 will into the factory mode, and press Menu key the
OSD will show menu and a word “F” at LEFT top of Menu.
1. In the factory mode select “COLOR TEMP” may be select the difference color temp.
2. Select SCALER Adjustment:
RG, GG, BG
Æ
R, G, B Gain adjust.
RB, GB, BB
Æ
R, G, B Bias adjust.
<Notes: the R, G, B gain use 9 bits, and R, G, B bias use 10 bits to save the value in EEPROM,
so if the R, G, B gain and bias is 255 to 256, the “P0 256”will change to “P10”>
Notes: adjust AV mode the same as PC mode, except the luminance (Pc mode is 350cd/m2,
Av is 420cd/m2).
II. Bias (Low luminance) adjustment:
1. Set the raster pattern (Black pattern with 1024
×
768) Input.
2. Set the contrast on OSD window to the value=80, Brightness set to “80”
3. Adjust the brightness on OSD until chroma 7120 measurement reach the lowest value.
Cha
ter 6