4-11
6. Auto Contrast Adjustment
6.1 ADC Bias and Gain Control
a: Enter the input signal of VESA 640x480 (75Hz) in 8GrFrame pattern.
Input signal level: 0.7Vp-p
b: OSM into factory mode
c: OSM select to “auto contrast” then press “Left” or “Right” button, then push down key.
d: Press “SELECT” key to auto BIAS and GAIN execute.
6.2 Panel Brightness Check
a: Enter the input signal of VESA 1280x1024 (75Hz) in full white pattern.
Input signal level: 0.7Vp-p
b: OSM setting “brightness” to Max. and “contrast” to 50%.
c: Color temperature setting to “NATIVE” mode.
d: Check the center luminance: 200 cd/m2
6.3 Panel Color Check
a: Enter the input signal of VESA 1280x1024 (75Hz) in full white pattern.
Input signal level: 0.7Vp-p.
b: Color temperature setting to “NATIVE” mode.
c: Check the center color coordination.
x=313
±
30
y=329
±
30
6.4 Color Temperature Check
a: Enter the input signal of VESA 1280x1024 (75Hz) in full white pattern.
Input signal level: 0.7Vp-p.
b: OSM “brightness” setting to MAX (100) and “contrast” setting to 50%.
c: OSM into factory mode, and adjust R, G, B GAIN to meet below color temperature table.
d: Each color temperature SPEC. as below:
Control the color temperature according to the correlation data as follows.
Measurement of correlation data is available only for preset white color 9300K
～
5000K.
True value
Color Temp.
x y
Product check
Tolerance
Auto-alignment
adjust Tolerance
9300K
0.283
0.297
± 0.011
± 0.005
8200K
0.292
0.307
± 0.011
± 0.005
7500K
0.299
0.315
± 0.011
± 0.005
6500K (sRGB)
0.313
0.329
± 0.011
(1) ± 0.005
(2)
∆
E94 < 15
5000K 0.346
0.359 ±
0.011
± 0.005
Native
Native color of LCD panel.
