Hamed 0 Posted July 31, 2021 Hi My English is not good i apologize for this I Connect DVR and Camera to a 12V power supply (both to one source), horizontal line shown in video when i disconnect HDD or connect DVR and Camera to different power source Problem Solved! change power source, DVR, camera, HDD and use 12V UPS but the problem is still there! i want use 12V UPS, for this reason have to use same power supply for camera and DVR thank you... Share this post Link to post Share on other sites
tomcctv 190 Posted July 31, 2021 Hi. Not good practice to use power supply that runs cameras to power your dvr it needs to be separate 1 Share this post Link to post Share on other sites
Hamed 0 Posted July 31, 2021 So how can i use ups 12V as power supply for camera and dvr? You mean i should use to separate ups for cameras and dvr? Share this post Link to post Share on other sites
tomcctv 190 Posted July 31, 2021 Hi. It sounds like you are using a power supply with battery backup which is not the same as a UPS also you need to take into account the amp demand of your dvr ….. which is why it is always supplied with its own power supply …. It uses more amps than your camera Share this post Link to post Share on other sites
