Video SYNC signal not balanced would cause picture "up-rolling" that happened on weak, strong differential signal into DVR. Or under long range cabling cause "Impedance not Matching". For Coaxial cabling, add CB001VH ( Coaxial BALUN) for extra interference rejection, twisted pair cabling, add TVB001.
Before Use
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After Use
FEATURES
Eliminate interference under long range cabling caused by "Impedance Matching", add TVB001 BALUN at "connecting point" between two-wire connections for compensation