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CCTV question

Discussion in 'Electronic Basics' started by Dannyboyy, Apr 17, 2005.

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  1. Dannyboyy

    Dannyboyy Guest

    For a remote camera with a regular RCA type plug output do you think I could
    splice in CAT5 cable for the run? Would it have enough inherent shielding
    for the job?
     

  2. How much shielding is "enough" depends on how much
    interfering field is present and what interference you are
    willing to tolerate.

    The main problem you will have with CAT5 cable is that
    is has the wrong impedance and is likely to create ghost
    images or blur edges horizontally, depending on how long
    a splice you make. You might be able to remedy those
    problems by changing the source or load termination, but
    using the right kind of coax would be simpler.
     
  3. Lord Garth

    Lord Garth Guest

    There are baluns sold that match the two. I also recall seeing
    circuits to activly drive over 1000' of CAT5e, but where?

    http://www.edn.com/archives/1996/080196/16dfcov.htm

    This should get you started
     
  4. Tom Biasi

    Tom Biasi Guest

    NO! Do the job right.
     
  5. Andrew Holme

    Andrew Holme Guest

    CAT5 is 100-ohm balanced; RCA coax video is 75-ohm unbalanced. You need
    balun transformers at each end, or active line-driver / receivers.
     
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