breda 0 Posted June 2, 2017 Hi, we have about 300 foot RG-59 Coax cable to run to the end or are driveway we have CCTV Camara by are gates The RG-59 is running in PVC conduit pipe a few inches underground the cable was installed about 6 years ago we tested the CCTV camera with jumper coax, and it works so we know the problem has to be in the coax or connector is there any test equipment we can buy or rent that will tell us where the cable fault is? Is there was to put toner signal on the-59 and use prob to find the bad section any help wold be appreciated Share this post Link to post Share on other sites
the toss 0 Posted June 2, 2017 "The cable was installed about 6 years ago" by you or by someone else. I'd ALMOST bet my bouncys that it has been joined somewhere in the run either using proper BNC fittings or (yuk) by soldering and a bit of tape. If that is the case then pull it out and replace it. Otherwise if it is short circuit it could be determined by a return resistance measurement if you know the cable type & specs. If it is open circuit it could be determined by a "time domain reflection" reading. Share this post Link to post Share on other sites
breda 0 Posted June 2, 2017 Hi, Thanks it was installed by contractor its one long run 75 ohms with one connector on each side how do the return resistance measurement test? each connector 300 feet apart Share this post Link to post Share on other sites
