LOAD RESISTANCE
The resistance impedance that a properly terminated cable places on the signal transmitted through it. In the case of a high frequency signal, signal-to-cable matching is essential to prevent signal deterioration. A specific load resistance (which is equal to the cables characteristic impedance) should terminate the cable, which in video is usually 75 ohms. Improper cable loading results in signal distortion, ghost images, color loss and other adverse phenomena. The source resistance should be equal to that of the cables impedance and the load resistance.
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