This standard provides specifications for format and recording 1/2 inch, 9-track magnetic tape to be used for information interchange among information processing systems, communication systems, and associated equipment utilizing the ANSI, ANSI X3.4.1977. This standard deals solely with recording on magnetic tape and supports and complements ANSI - Unrecorded Magnetic Tape for Information Interchange (9-Track 800 CPI, NRZI; 1600 CPI, PE; and 6250 CPI, GCR), ANSI X3.50-1983.