Does anyone know of a external card with a BNC input that will allow a laptop to be used as a test monitor for a standard NTSC video format on a CCTV system.
I help maintain our camera system. At my old job we had small testing monitors for focusing cameras, but I'm just wondering if there is a cost effective alternative that would allow the use of a laptop I already have.

Thanks.

You'll either need
A) a pcmcia capture card that has bnc input which are quite rare
Or
B) a bnc to rca cable/adapter and a pcmcia capture card with rca inputs

+software of course