Non Return to Zero Inverted - ορισμός. Τι είναι το Non Return to Zero Inverted
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Τι (ποιος) είναι Non Return to Zero Inverted - ορισμός

LINE CODE IN WHICH THE SIGNAL VALUE RETURNS TO ZERO BETWEEN EACH PULSE
Return to zero; Return to zero, inverted; RZI; Return-to-zero, inverted

Non Return to Zero Inverted      
<storage> (NRZI) A recording method used for 9-track {magnetic tapes} (200 and 800 BPI) where a zero is represented by a change in the signal and a one by no change. NRZI is also used extensively in SDLC communications. VTAM has a parameter NRZI=YES|NO. Compare Phase Encoded, GCR. (1999-01-11)
Non-return-to-zero         
  • An example of the NRZI encoding,  transition on 1
  • The opposite convention, transition on 0
  •  Unipolar NRZ(L), or unipolar non-return-to-zero level
  • Non-return-to-zero space
  • Encoder for NRZI, toggle on one
  • Encoder for NRZS, toggle on zero
LINE CODE IN WHICH THE SIGNAL VALUE DOES NOT RETURN TO ZERO AFTER EACH PULSE
Non-return-to-zero, inverted; NRZI; Non return to zero; Non return to zero, inverted; Non-return-to-zero space; Nrz-l; Polar encoding; NRZ encoding; NRZ-L; NRZ-I; NRZS; NRZM; NRZL; Non-Return-to-Zero; Non-Return-to-Zero Inverted; Non-return to zero; NRZI-S; SNRZI; Synchronized NRZI; Randomized NRZ; Randomized NRZI; RNRZI; RNRZ; Randomised NRZI; Randomised NRZ; Synchronised NRZI; NRZ-S; NRZ-M; NRZ(M); NRZ(S); NRZ(I); NRZ(L); NRZ-C; NRZC; NRZ(C); Inhibit code; IBM code; Non-Return to Zero; Non-Return to Zero Inverting; Non-return to zero inverting; Non-return-to-zero inverting; Non-return-to-zero-inverting
In telecommunication, a non-return-to-zero (NRZ) line code is a binary code in which ones are represented by one significant condition, usually a positive voltage, while zeros are represented by some other significant condition, usually a negative voltage, with no other neutral or rest condition.
NRZI         
  • An example of the NRZI encoding,  transition on 1
  • The opposite convention, transition on 0
  •  Unipolar NRZ(L), or unipolar non-return-to-zero level
  • Non-return-to-zero space
  • Encoder for NRZI, toggle on one
  • Encoder for NRZS, toggle on zero
LINE CODE IN WHICH THE SIGNAL VALUE DOES NOT RETURN TO ZERO AFTER EACH PULSE
Non-return-to-zero, inverted; NRZI; Non return to zero; Non return to zero, inverted; Non-return-to-zero space; Nrz-l; Polar encoding; NRZ encoding; NRZ-L; NRZ-I; NRZS; NRZM; NRZL; Non-Return-to-Zero; Non-Return-to-Zero Inverted; Non-return to zero; NRZI-S; SNRZI; Synchronized NRZI; Randomized NRZ; Randomized NRZI; RNRZI; RNRZ; Randomised NRZI; Randomised NRZ; Synchronised NRZI; NRZ-S; NRZ-M; NRZ(M); NRZ(S); NRZ(I); NRZ(L); NRZ-C; NRZC; NRZ(C); Inhibit code; IBM code; Non-Return to Zero; Non-Return to Zero Inverting; Non-return to zero inverting; Non-return-to-zero inverting; Non-return-to-zero-inverting

Βικιπαίδεια

Return-to-zero

Return-to-zero (RZ or RTZ) describes a line code used in telecommunications signals in which the signal drops (returns) to zero between each pulse. This takes place even if a number of consecutive 0s or 1s occur in the signal. The signal is self-clocking. This means that a separate clock does not need to be sent alongside the signal, but suffers from using twice the bandwidth to achieve the same data-rate as compared to non-return-to-zero format.

The "zero" between each bit is a neutral or rest condition, such as a zero amplitude in pulse-amplitude modulation (PAM), zero phase shift in phase-shift keying (PSK), or mid-frequency in frequency-shift keying (FSK). That "zero" condition is typically halfway between the significant condition representing a 1 bit and the other significant condition representing a 0 bit.

Although return-to-zero (RZ) contains a provision for synchronization, it still has a DC component resulting in “baseline wander” during long strings of 0 or 1 bits, just like the line code non-return-to-zero.