non-return-to-zero


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non-return-to-zero

[′nän ri‚tərn tə ′zir·ō]
(computer science)
A mode of recording and readout in which it is not necessary for the signal to return to zero after each item of recorded data. Abbreviated NRZ.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

NRZ

(Non-Return-to-Zero) A data modulation method in which the 0s and 1s are represented by different polarities, typically positive for 0 and negative for 1. See NRZI.
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References in periodicals archive ?
1, it is a 39.813 Gbit/s (STM-256 without forward error correction) 4 channel WDM transmission system with non-return-to-zero encoding technique and binary differential phase-shift keying modulation format.
Non-return-to-zero (NRZ) encoding is used for data transmission to assure high noise immunity and compact messages with a minimum number of signal transitions.
The CV-MCU2 combines the features of both conditioned diphase modems and fiber-optic modems, and offers a conversion to and from non-return-to-zero protocols.
It will also interface with up to 8 balanced Non-Return-to-Zero groups at rates up to 2048 Kbps.
Due to the non-return-to-zero (NRZ) modulation methods used in these systems and the high frequency performance needed to support the desired data rates, RF/microwave components must operate over an extremely broad frequency range.
The KPRV2022 differential photoreceiver has an optical-to-electrical bandwidth of 33 GHz with a differential conversion gain of 1,000 V/W and is optimized for high sensitivity non-return-to-zero (NRZ) applications.