1-4) Alternate Mark Inversion (AMI) is a kind of bipolar encoding where the level 0 is encoded as zero volts, as in unipolar encoding, whereas the level 1 is encoded alternately as a positive voltage or a negative voltage Se ST The AMI-RZ format has an error detection property, if two sequential pulses are received with the same polarity, it is evident that an error has occurred. The AMI-RZ signalling waveform representing the binary
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