Information Systems - Unrecorded Magnetic Tape for Information Interchange (9-Track 800 CPI, NRZI; 1600 CPI, PE; and 6250 CPI, GCR) Formerly ANSI X3.40-1993 [Replaced: ANSI X3.40, ANSI X3.40, ANSI X3.40]
This standard provides the information necessary to enable mechanical and magnetic interchangeability for reels of 1/2-inch-wide unrecorded magnetic tape between information processing systems, communication systems, and associated equipment utilizing American National Standard for Information systems - Coded character sets - 7-bit american national standard code for information interchange (7-bit ASCII), ANSI X3.4-1986, and amendments thereto. This standard deals solely with magnetic tape for digital recording and supports and complements American National Standards on recorded magnetic tape for information interchange.