Delta Qumi_DP274-A13VVxx Service Manual Page 48

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Delta Elec. Inc. Qumi Ver.02
Company Confidential Vivitek ______________________ Delta____________
48
2011/07/05
6-1. ADC Adjust Procedure -- (Optional)
A. Function Description
ADC Calibration – VGA Calibrating Analog RGB signal
Calibration Status Status of VGA calibrated value
B. Calibrate Analog RGB (1024x768@60Hz XGA):
Step 1 In Service Mode 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” to calibration
Input Pattern
Step 2 : After complete the OSD will show the picture as follow , if not complete, just close the OSD
Note : Offset & Gain Value
Default After ADC
Offset 511
Gain 511
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%.
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