Greeting GuenterL,
Your advise about the DE locked flag was correct. It was not set for those resolutions and explains why the line width and field height were not valid. I tested the BL, LCF, LCVS and FCL measurements for those resolutions but, some give the same set of values. I checked CH1_STDI_CONT was set to 1 for continuous mode operation and CH1_STDI_DVALID flag was 1 before reading the measurements.
Resolution Measurement
800x600 60hz BL:6066 LCF:627 LCVS:4 FCL:1862
1024x768 60hz BL:4743 LCF:805 LCVS:6 FCL:1869
1152x864 60hz BL:3809 LCF:999 LCVS:3 FCL:1864
1280x768 60hz BL:3809 LCF:999 LCVS:3 FCL:1864
1280x1024 60hz BL:3511 LCF:1088 LCVS:6 FCL:1871
The SVGA and XGA reading matches the table in the hardware manual but, the1152x864 and 1280x768 resolutions have the same values. Do you have any advise on why these values are not unique?
Best Regards,
Matthew