Does anyone know what does the two switches on the passive Y/C adapter sold by Ultimatemister.com do? I'm creating a 3D printable case for it that I plan to make available for free, so I need to know what to write beside each of the case's opening 
From https://docs.google.com/document/d/1Frf ... s57drfyfev, it looks like the top one is "DV_ENABLE", or direct video jumper, and the bottom is "NO_YTRAP", or enable/disable luma trap jumper.
One bypasses the Luma trap and you want bypass it for svideo, the other is to use the onboard sync circuit. I would enabled both for composite and enable the sync circuit for svideo.
Don't use the sync on green on the analog io board, it's typically way out of spec.
Guys, thank you so much for the help! I finished making the cases and made a post with the links for download, in case anyone is interested: viewtopic.php?t=7526
