Non Return to Zero Inverted NRZI <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)
NRZI Non-Return-to-Zero, Invert to ones [encoding]