hunar 0 Posted February 1, 2017 Request for Help! We have installed an analog (1000tvl) system for an industrial water pumping station. Since cameras are original Samsung brand, we use 24V AC for powering the whole system. Most of the box and PTZ cameras are installed on iron poles and we use RG11 coaxial cable. Now we are having rolling bar noises in most of the cameras. We have done different tests to solve the issue but they haven't reached any clear results. Please see the attached photos and videos and help us with your advises and recommendations. Thanks for your helps. Share this post Link to post Share on other sites