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