Here is the issue I am seeing with ESG3. When ESG3 is connected to external sync, the picture starts to jitter. Look in the center of the frame and you will see the vertical lines are wiggling left to right.
I’ve bypassed all other modules and am connecting a 1080i59 Y signal directly to the ESG3 sync input. ESG3 DIP switches are configured for 1080i59.
In this clip, DSG3 is generating ramps and going directly into ESG3. I have not configured the DIP switches on the rear of DSG3, I left it in automatic mode. But the jitter also happens with external video from a Syntonie VU0003B decoder, so that would seem to indicate that the issue is not with the DSG3.
I have tried several different sync sources, and so far the problem persists. The jitter is intermittent, coming and going according to no pattern I have determined.
As soon as ESG3 is running on internal sync, the issue immediately goes away and the picture is rock solid.
To make matters even more confusing, if I send genlocked ramps from Syntonie VU009 into the ESG3, then I do not see the jitter issue.
The ordinary sync signal path in this rack is this:
External source → VU003B → ESG3 → DSG3 → FKG3 → VU009 → VU009 → VU009
The sync signal is unterminated at the end of the chain. But I tried it with a 75 ohm terminator plug and it didn’t make any difference.
In the clip posted above, the sync path is this:
External source → ESG3 → DSG3
I am also seeing the whole system lose sync randomly for a few seconds every now and then, with no idea why. The picture just goes away and then comes back. ESG3 is going through an AJA HD10AVA to convert it to SDI before hitting the monitor. I can try swapping that out, but honestly the more I fiddle with this the more I think the issue must lie with ESG3. The cornerstone of the whole studio, and apparently not reliable.