A term used to describe the cascading or chaining of a video signal to several video machines (distribution amplifiers, VCRs, monitors, etc.). For example, a VCR is hooked up to a distribution amplifier, which has a video-input connector, and a loop output connector. When a signal is transmitted to the first machine through the input socket, it is fed, as an unprocessed signal, through the loop output connector (parallel connection) to the second machine. In turn, exactly the same signal is fed to a third device which is attached to the second one, and so on. Thus a very large number of VCRs or other video devices can be looped together for multiple processing. Proper signal terminations should be noted. In a large cascaded setup, signal termination is normally applied at the last machine in the chain.
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