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What is the difference...

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between video T's and loopthroughs? Any? Can the fact that a signal is terminated in two places affect your video?

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Yes, the video must be terminated only once.

 

Loopthrus, nowadays, are self terminating....ie if you don't plug the other side in, then it terminates into 75 ohms. If you're using T-s...you must terminate the unused end. Not a big fan of T's as they are external to devices and could be subject to breakage.

 

Double termination can happen resulting in a crushed picture and weak sync.

 

Cheers.....Rapid

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