Ground loop with separate power supplies?

[yakky 0]

So I'm getting some horizontal rolling bars. This is a new setup, pretty simple for now.

 

1x CNB VCM-24VF

1x Qvis Eye 34

1 Dahua 16 channel DVR.

 

Both cameras are powered by individual power supplies, 1-12v switching, 1-12v transformer. The camera with the transformer seems to be doing much better. The Dahua has its OEM powersupply. Both cameras are run over CAT5 with cheapo balck and green baluns. Power is also run over the wire.

 

My biggest surprise, and hopefully, the biggest clue is they CNB has the worst rolling bars. I figured since it had a separate power supply, it would be doing the best.

 

Any ideas?

[yakky 0]

Got it figured out.