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. Last updated: 1999-01-11
