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Cable & connectors for cctv

  • 09-03-2007 2:40pm
    #1
    serotonin_sam
    Closed Accounts Posts: 204 ✭✭


    Are bnc connectors just screw on ? Theres no skill required in fitting them I take it?

    Can I use ct100 cable from camera back to cctv unit? - or do I need higher/different spec?


Comments

  • #2
    Snowbat
    Registered Users, Registered Users 2 Posts: 1,065 ✭✭✭Snowbat


    BNC plugs are normally solder-on or crimp-on. Some experience in soldering or crimping is beneficial. I haven't seen a screw-on variety.

    Any 75 Ohm coaxial cable will be fine for CCTV. Use low-loss cable for very long runs.


  • #3
    serotonin_sam
    Closed Accounts Posts: 204 ✭✭serotonin_sam


    Snowbat wrote:
    BNC plugs are normally solder-on or crimp-on. Some experience in soldering or crimping is beneficial. I haven't seen a screw-on variety.
    Thats a shame. I will have to get a crimper then (kind of pointless in that i'm only going to use the thing once) - and hope that I can manage to crimp them....unless its possible to order them complete to a certan length with the bnc connectors already on??

    Anyone know if any protection is needed against lightening? I have seen some cams recently and they seem to have a wire leading to a 'box' - and onwards from there inside. Wonder was this to deal with lightening strike or for another purpose?


  • #4
    zilog_jones
    Registered Users, Registered Users 2 Posts: 6,638 ✭✭✭zilog_jones


    Unless they're up really high (i.e. as high as nearby buildings or anything else as tall) I wouldn't think it'd be an issue.


  • #5
    serotonin_sam
    Closed Accounts Posts: 204 ✭✭serotonin_sam


    zilog_jones wrote:
    Unless they're up really high (i.e. as high as nearby buildings or anything else as tall) I wouldn't think it'd be an issue.
    Ok, thanks. Hope yer right.

    I found these twist on bnc connectors so hopefully they will do the trick without having to go messing around with crimping, etc. Says their suitable for RG59 cable - Am I right in thinking thats the same as CT100?


  • #6
    SouperComputer
    Registered Users, Registered Users 2 Posts: 6,946 ✭✭✭SouperComputer


    what connectors are on the cables now?


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  • #7
    Snowbat
    Registered Users, Registered Users 2 Posts: 1,065 ✭✭✭Snowbat


    CT100 cable is very slightly fatter than RG59 (both centre conductor and outside diameter) but so close (<0.5 mm) that you shouldn't have any problem fitting RG59 BNC plugs.

    CT100 is overkill for this application but if you have some sitting around or available at the right price, why not.


  • #8
    serotonin_sam
    Closed Accounts Posts: 204 ✭✭serotonin_sam


    SouperComputer wrote:
    what connectors are on the cables now?
    Havn't got the cable yet SC - but had assumed I would just get ct100. Just about to order up the cams - so just making sure I have all other angles covered.
    Snowbat wrote:
    CT100 is overkill for this application but if you have some sitting around or available at the right price, why not.
    Ok, maybe I will just get regular RG59 then.


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