aissecur Posted February 12, 2020 Share Posted February 12, 2020 how long are the camera runs? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/43526-site-with-terrible-interference/page/2/#findComment-495313 Share on other sites More sharing options...
sixwheeledbeast Posted February 12, 2020 Share Posted February 12, 2020 24Vac supply may remove interference. This is often due to there design isolating a ground loop from via the PSU. Similar effect to isolating a ground loop via "humbug" loop isolation on the signal cable, just on the power side. You didn't mention much else about the installation either, UTP or coax, power supply locations, camera types and transmission type, any tests etc. Tearing like in your OP would always make me think ground loop, hence my post. 1 Link to comment https://www.thesecurityinstaller.co.uk/community/topic/43526-site-with-terrible-interference/page/2/#findComment-495317 Share on other sites More sharing options...
westy1 Posted February 13, 2020 Author Share Posted February 13, 2020 It's coax runs of no more than 25 metres per camera. I am going to test the groundloop isolators on several runs and see what happens. If all else fails I think I will try the 24V power root and use volatge converters. Thank you for the recommendation on that. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/43526-site-with-terrible-interference/page/2/#findComment-495404 Share on other sites More sharing options...
sixwheeledbeast Posted February 13, 2020 Share Posted February 13, 2020 It's best to use humbug devices as a last resort. They are handy for locating the type of fault initially but if you can solve it in the field that's the best. As I say take the time to remove the cameras and add/test them, like I said in post above. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/43526-site-with-terrible-interference/page/2/#findComment-495405 Share on other sites More sharing options...
MrHappy Posted February 13, 2020 Share Posted February 13, 2020 2 hours ago, westy1 said: It's coax runs of no more than 25 metres per camera. I am going to test the groundloop isolators on several runs and see what happens. If all else fails I think I will try the 24V power root and use volatge converters. Thank you for the recommendation on that. is it an easy job to try running cameras of 12v batteries ? 1 Mr Veritas God Link to comment https://www.thesecurityinstaller.co.uk/community/topic/43526-site-with-terrible-interference/page/2/#findComment-495408 Share on other sites More sharing options...
james.wilson Posted February 14, 2020 Share Posted February 14, 2020 1 hour ago, MrHappy said: is it an easy job to try running cameras of 12v batteries ? Qfa securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/43526-site-with-terrible-interference/page/2/#findComment-495410 Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now