Differential Manchester

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Differential Manchester is more efficient than standard Manchester encoding and makes fast ethernet over copper twisted pair wiring possible by reducing the amount of bandwidth required to transmit data.

Differential Manchester is a non-return-to-zero (NRZ) protocol. Differential manchester changes it's signaling state only when there is a change in data that differs from the prior bit. This reduces the amount of actual signal bandwidth needed to transmit data.

 

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