Selling my Extron 580xi with BNC-to-VGA (HD15) adapter included.
Manual is here perfect little device for owners of PVM/BVM/Dreamcast/Naomi/31khz CRT gear.
Continental USA only, Paypal funds and USPS Priority shipping: 50$
I used it mainly to composit the H and V syncs from my Dreamcast.
Basically it turns 5 wire (red,green,blue,h-sync,v-sync) into 4 wire (red,green,blue,c-sync).
If you have something like a PVM 20L5 for example (a monitor that can sync 15~45khz) you could composit your PCs VGA and the monitor could display 480p~1080i.
Too cool. There are so many different models that I never know what one does. And sometimes you realize "Oh man, this would make life so much easier" when you do learn.
Yup you could use it that way to composit the Dreamcast's H and V syncs... As long as you have a multi-sync PVM/BVM is should accept the 640x480 once composited.