Calibrate Analog Ypbpr - Optoma HD86 Service Manual

Delta Elec. Inc.

6-2. Calibrate Analog YpbPr:

A. Function Description：
ADC Calibration - Component : Calibration YPbPr signal
B. Calibrate YPbPr (480p @60Hz):
Step 1： Press "Color Setting" to do DA Calibration
YPbPr In this menu input pattern with 75% SMPTE pattern for calibration Component.
Input Pattern
After input ready press "Enter" key on Calibration item to calibration.
Step 2 : After complete, you can get the calibrated value that different with default value
(all 127). if calibration fail, you can get the calibrated vale of default (all 127)
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
65
Default After ADC
Offset 127
Gain 127
Optoma___________________
HD86
Delta________________
2009/08/18