I am trying to feed RS-170 video signal from a single ended amp to a differential 75 ohms video amp. When I connected RS-170 signal to + of the differential and RS-170 return to - of differential, video had a lot of flickering and noise - maybe impedance matching problem? I think it is matched 75 ohm, but maybe I am wrong. The video amp is AD8023 from Analog Device. The two systems' GNDs are connected (driving side and receiving side) via other connection, but not shown in the drawing below.
What's the best way to connect TSG350 to 75 ohms differential video amp(37.5ohm into each +/- inputs of the amp)? Please advise.