apparently, "standard" cctv signal is 1volt peak-peak from the camera into 75ohm cable.
two quick questions:
1. is it critical to terminate each end of the cable, like in the old 110-ohm rg58au coax networking days?
2. what is the approximate upper practical limit on the cam cable before image quality suffers noticeably, or is this a case of cable/cam dependent? after all, i did notice monster cable sells video interconnect.....
Fri Nov 25, 2005 7:40 pm
Joined: Wed Jun 08, 2005 9:07 pm Posts: 5078 Location: Midlands UK
yes need termnation
camera should already be terminated
monitors are selectable
I think the cards you get work out for themselves as i have never yet had to terminate externally
Guidelines for a high res colour signal running down rg59/u (note the /u std rg59 is 50Ohm) is about 250m
If you need to go longer use an RG11 or a CT125 cable
or if really long you could convert to cat5 utp (good for about 4000m with active kit)
or fibre if your crossing counties
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