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)
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