6-1.Calibrate Analog Rgb (1024 X 768 @ 60Hz) - Optoma EX779 Service Manual

Delta Elec. Inc.
6-1. Calibrate Analog RGB (1024 x 768 @ 60Hz):
A. Function Description:
ADC Calibration - VGA ：Calibrating Analog RGB signal
ADC Calibration – YUV ：Calibrating YUV signal
Calibration Status
B. Calibrate Analog RGB
Step 1： In SERVICE 1Mode select ADC Calibration – VGA, In this menu input pattern with
White(240,240,240) and Black(16,16,16) for calibrate VGA Source . After input ready press "Enter" key to
calibration.
Input Pattern
After input ready press "Enter" key on Calibration item to calibration.
Step 2 : After complete the OSD will show the picture as follow , if not complete, just close the
Note : Offset & Gain Value
Step 3 : Compare internal white pattern and RGB source white pattern, if the brightness
gap ratio of these two source is bigger than 3.5%.
Company Confidential
63
：Status of VGA and YUV calibrated value
(1024 x 768 @ 60Hz XGA):
Default After ADC
Offset 511
Gain 511
Optoma__________________
EX779
Delta________________
2010/04/14
OSD.