About: Alternate-Phase Return-to-Zero

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Alternate-Phase Return-to-Zero (APRZ) is an optical line code. In APRZ the field intensity drops to zero between consecutive bits, and the field phase alternates between neighbouring bits, so that if the phase of the signal is, for example, 0 in even bits (bit number 2n), the phase in odd bit slots (bit number 2n+1) will be ΔΦ, the phase alternation amplitude.

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  • Alternate-Phase Return-to-Zero (APRZ) is an optical line code. In APRZ the field intensity drops to zero between consecutive bits, and the field phase alternates between neighbouring bits, so that if the phase of the signal is, for example, 0 in even bits (bit number 2n), the phase in odd bit slots (bit number 2n+1) will be ΔΦ, the phase alternation amplitude. (en)
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  • Alternate-Phase Return-to-Zero (APRZ) is an optical line code. In APRZ the field intensity drops to zero between consecutive bits, and the field phase alternates between neighbouring bits, so that if the phase of the signal is, for example, 0 in even bits (bit number 2n), the phase in odd bit slots (bit number 2n+1) will be ΔΦ, the phase alternation amplitude. (en)
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  • Alternate-Phase Return-to-Zero (en)
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