ip camera and loss of signal

Zorac · 2016-11-20T04:12:19+00:00

I have two cameras that periodically drop off and give a loss of signal in BI. the cameras in questions are 12v generic cameras (like the top201) off aliexpress. i thought it might be a voltage issue (from v drop over 50' of network cable) but the voltage measured a minimum of 11.3v at the camera, not sure what else it could be, all my hikvision cameras are fine. these generic cameras then to throw off errors in batches, then be fine for a bit. though it might be heat as well, but i put vent holes in the cases and put a heatsync on the main chip that heats up, but no luck. any ideas? is my voltage getting to low? i could put them on a 48v poe port instead with a drop down to 12v at the camera instead.