Video SYNC signal or V Phase, not balanced, would cause picture up-rolling this would occur when there is a weak, strong differential video signal into DVR. Also if the video signal is under a long range cabling may cause Impedance not Matching . For Coaxial cabling, use the CB001VH ( Coaxial BALUN) for extra interference isolation, twisted pair cabling, use the TVB001.
Cable : Coaxial
Dimensions mm: 84x28x21 with 19cmx2 cable
Material: ABS Black
BNC male to BNC female with mini cable 15 on both sides.
Designed to work with any DVR to reduce any DVR interference.
Manufactured in a highly balanced mode to reduce video transmission interferance from sources of noise: Data signals, other video signals, nearby power, ringing telephones, fluorescent lights, transformers, and more...