daubs8 Posted March 10, 2009 Share Posted March 10, 2009 Anybody see any problems with using a spare pair from a 4 core screened beldon to run video? It's for an internal speed dome, the telemetry is ok? Ta. Link to comment Share on other sites More sharing options...
DirectFS Posted March 10, 2009 Share Posted March 10, 2009 Um, distance? Quality? Impedance? Have to be honest, if an engineer of mine tried it without good reason (and a pair of decent baluns) I'd probably have his job. Just my tuppence worth, though ) In the strictest sense of the word, you can run video down just about any piece of cable, to some extent. And people have. Bill. Anybody see any problems with using a spare pair from a 4 core screened beldon to run video? It's for an internal speed dome, the telemetry is ok? Ta. Bill Accord Fire & Security Services Ltd. www.accordfire.co.uk ~ TEL: 0845 474 5839 Link to comment Share on other sites More sharing options...
SystemQ Posted March 10, 2009 Share Posted March 10, 2009 Anybody see any problems with using a spare pair from a 4 core screened beldon to run video? It's for an internal speed dome, the telemetry is ok? Ta. The capacitance caused by the screen can sometimes be an issue. If the runs are over 20mtrs the picture can start to look a little System Q Ltd. Link to comment Share on other sites More sharing options...
SUBS Posted March 10, 2009 Share Posted March 10, 2009 NVT dont specify impeadence, just say unscreened 24-16 Guage twisted pair. They also reckon 6 or more pair, overall Screened cable is OK. I reckon if its not a tight cable, ie loose pairs, and its not a very long run it'll probably be OK. You might lose some hf content due to the higher capacitance, but will the customer be able to tell ? Link to comment Share on other sites More sharing options...
ian.cant Posted March 10, 2009 Share Posted March 10, 2009 Short distance 10/20 mtrs it will work without baluns, further than that and its guess work as to how far and how good, far from ideal but for a temp repair, why not. Link to comment Share on other sites More sharing options...
james.wilson Posted March 10, 2009 Share Posted March 10, 2009 long distance it wont. We tried to use an existing beldon approx 400m. Failed miserably even on active nvt. securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
satsuma01 Posted March 10, 2009 Share Posted March 10, 2009 can you not run a coax back?? "If you carry your childhood with you, you never become old. Why rush to end life when happiness is in the blissfulness of childhood innocence.""We all die, the goal isn't to live forever, the goal is to create something that will." 07475071344 Link to comment Share on other sites More sharing options...
james.wilson Posted March 10, 2009 Share Posted March 10, 2009 i have seen devices that will work over even bell wire, but cant think of a model name etc sorry. useless post securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
SUBS Posted March 10, 2009 Share Posted March 10, 2009 i have seen devices that will work over even bell wire, but cant think of a model name etc sorry. useless post Dyou mean the Addlestone stuff ? Link to comment Share on other sites More sharing options...
james.wilson Posted March 10, 2009 Share Posted March 10, 2009 nah im sure i would of remebered that. It was something else. Basically said it could do 200m with power and vid over bell wire, intruder, twisted, 1.0mm mains etc. Didnt matter just needed 2 wires securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
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