I am working on a system that has multiple cameras into a DVR then mods out to a channel. The initial problem was the cameras were fuzzy. The owner let me know yesterday that whatever feed is hooked in second ( i.e. camera line or TV line ) it is the fuzzy one.
The feed from the camera DVR and the amplified Cable feed join together with a 2x1 combiner then this line goes to the splitters for the house.
Thanks