Graphics

For those familiar with the more technical side of XPression, I'm experiencing what appears to be a timing issue which is presenting any fullscreen XPression scenes with a gap appearing at the bottom of the frame. Normally this isn't an issue as part of the signal is lost through transmission, but posting video online does present this issue at the bottom of the frame. I've included a screencap of the affected output. I've also included a screencap of our Matrox card configuration. When I've tried to resolve this issue before, I was able to fill the gap at the bottom of the frame by changing the vertical timing, but all that accomplished was shifting the video lower on the output, leaving a gap at the top of the frame. Has this shown up for anyone else? Is it a matter of running the output signals through a TBC to stretch the signal to the fill of the frame?

1 line of frame shift fix

Black burst: Vertical to -2. Horizontal 8000ns - 37000ns.
Trilevel: Vertical to 1124. Horizontal to 0.
Or time the XPression output with house reference using a waveform monitor.

XPression > Edit > Hardware Setup > Matrox > Configure > Board > Genlock > Timing Offset

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Thanks garner - this appears to have been the fix needed! Cheers!!
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Must be using xmio2 output I guess? DSX/LE4 does not allow negative timing values (tested extensively). A certain competitor has the same bug... There's a tech note on the Matrox site describing the different calculation that needs to happen in order for advanced timing to work on these cards. :)
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Yes, the above timings are for the XMIO2. I've not had reports of the DSX LE4 cards having this frame shift issue. Thanks for the info!
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