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Multiple Choice

What does NEXT stand for and how is it defined?

Near-End Crosstalk. It describes how much signal from one pair leaks into a neighboring pair as the signal travels, and it’s measured at the near end of the channel—the end where the transmitter is located. The definition is the ratio, usually expressed in decibels, of the power picked up on an adjacent pair at the near end to the power transmitted on the source pair, with other pairs properly terminated. A higher NEXT value (more dB) means less unwanted coupling and better performance. This is distinct from crosstalk measured at the far end, which is called FEXT. The other option phrases aren’t standard terminology, so they don’t match the established meaning of NEXT.

Near-End Crosstalk. It describes how much signal from one pair leaks into a neighboring pair as the signal travels, and it’s measured at the near end of the channel—the end where the transmitter is located. The definition is the ratio, usually expressed in decibels, of the power picked up on an adjacent pair at the near end to the power transmitted on the source pair, with other pairs properly terminated. A higher NEXT value (more dB) means less unwanted coupling and better performance. This is distinct from crosstalk measured at the far end, which is called FEXT. The other option phrases aren’t standard terminology, so they don’t match the established meaning of NEXT.