Eiki EK-800U Service Manual page 64

Chapter 4 Test & Inspection
4. ADC calibration
Note: After replacing main board, please execute ADC
calibration.
(1.) PC Calibration (For BNC port)
Procedure - Test equipment: QD802BT.
- Test signal: 1920x1200@60Hz
- Test pattern: Grays 16.
- Input the signal from BNC port.
- Get into factory mode.
- Select "ADC Calibration".
- Press "Auto" key to execute the PC
calibration.
Criteria - If there is noise on the screen, the product is
considered as failure product.
-The screen appears normal, it shouldn't
appear any abnormal condition, such as
lines and so on.
(
2.) Video Calibration (For BNC port)
Procedure - Test equipment: video generator.
- Test signal:1920x1200@60Hz(WU7)
- Test pattern: SMPTE BAR.
- Input the signal from BNC port.
- Get into factory mode.
- Select "ADC Calibration".
- Press "Auto" key to execute the video
calibration.
Criteria - There should not have any lack of
SMPTE BAR. Color levels should be
sufficient and normal.
- There is not any abnormal lines on the
image.
4-6
Grays 16
SMPTE BAR
EK-800U