TVI Camera - Works When Connected To Handheld Tester - But Not When Plugged Into DVR

Hi,

I have a situation where I have a Speco DVR Hybrid. I have cameras running from the elevator machine room to the head end 45 floors below. Signal is running over Cat 5 using video baluns. I have a great image from the elevator machine room to the cab. I have great image from the machine room to my tester at head end. As soon as I plug the balun into the DVR the signal is very poor to non existent. Any ideas?

I have tested a the signal in a number of different ports/channels still makes no difference.

Any thoughts would be greatly appreciated.

Thank you.

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