Quality of Xilinx ML401 video output?

Just got round to firing up my ML401 last weekend.

The quality of the video output is terrible. Do I have a faulty board, or is it a design/layout issue?

The video out has asynchronous resonant spikes running through it. The spikes are about 100 mV p-p, and have a resonant frequency of about 250 MHz, with about 6 half-cycles present.

There is also about 15 mV p-p of pixel clock and harmonics.

Jitter is about 5ns p-p.

I have not yet poked around with a scope or stared at the layout. I was hoping this is a board rather than a design problem, as I had intended to use the board for some video tests.

Also, the V4 is quite toasty. After running the slideshow for a few minutes the temperature is in the high 60s. Is this reasonable? (It's an ES part).

Thanks

Pete

Reply to
Pete Fraser
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Mine is rock solid clean image on all the demos that comes built-in.

Mine is comfortably warm to touch. I'm guessing 45 gr Celcius.

I sounds like you got a marginal part. I'd return it immediately.

Tommy

Reply to
Tommy Thorn

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