HD-A1 and convergence problems with BG808

John's input uses Port 3 and I assume you were feeding you other stuff through port 5 before? That would explain a huge difference in covergence as the Barco would create a new memory block for port three though you should be able to manually copy your port 5 input memory block for 1080i to you port 3 memory block.


As for your challenges getting convergence right that issue that could be caused by many things. For example, I recently upgraded to a 1208s/2. At certain frequencies I could not get the red convergene right on the left side of the screen. After a bunch of troubleshooting and replacing board I realized that the red raster was signficantly bigger than blue or green. Once I adjusted down in size, convergence worked perfectly. Also if you were using Port 5 before you might have an issue with the port 3 card.


Basically you need to start eliminating sources of the problem one at a time, try converging on the internal patterns for something near 1080i and see if you have an issue with the internal patterns, that would eliminate the port 3 card and the source as a problem. Then try a different source and so forth....

Quote:
Hello Kim,


It appears to me that the 1080i60 mode of the HD-A1 doesn't have the same porchs setting as the Snazio output. That is why the image is shifted to the left (means reduced horizontal front porch value).

This means also that you 808 should have detected a different pixelclock thus it should use a different video memory than the Snazio one... (you can check this on the PJ menu).


It's not really serious as long as your PJ is able to shift the image back in the screen and redo the convergences, then store the new convergences in the new memory.


BG-DVI module's EDID has nothing to do with this nor Silicon Image IC used inside the converter (this ship is synchronous to the digital synchronisation signals and porches). Only source (HD-A1) porchs settings are responsible of what you see.


John