An electronic process compensating for high frequency losses incurring in long cables due to various cable shortcomings. Equalization is usually performed by special controls or trimmers mounted on the amplifier or switcher which allow variable operation to equalize different cable lengths and qualities. Equalization is best done at the source amplifier, at the beginning of the long cable, to preserve optimal signal-to-noise ratio. Cable equalization (EQ) is also important for fast digital signals. For digital signals, cable EQ is done at the end of the cable. In this case the equalization is usually automatic and no trimming is required.
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