I am considering adding a MUX (ie. Panasonic WJ-FS616), then looping out into a DVR (prob PC Based). The MUX multi-screen out will go to a B-channel on a CCTV CRT monitor. I may also record to a VCR from the MUX for extra recording, or simply as a deterrent for any thieves.

Is there an A->D conversion done on the looping outputs on the MUX? If so, how much signal would be lost if any between the MUX and DVR? Tx.

Depends on the MUX, but as a general rule, most aren't converting to digital, and there should be no loss at all.

Any time you go from one connector to another, there is signal loss. But it should pretty low.

If you go with a Geovision combo card you get it all in just the DVR. :D

like Thomas said, small loss. Though nothing noticable. Course all depends on how much loss there is already coming from the camera.