kitia

I recently ordered 2 new SDI camera for my 6CH CCTV system. One of them worked immediately after connecting it to the dvr, the other one does not. I have exchanged positions and even cables, made sure that I have correctly made the connections but to no avail. What might be the cause of the malfunction?

Hi everyone. Got interested in this forum as I wish to install a CCTV system in my home for security purposes. I hope I will gain a lot from this forum. Cheers.