ANSI/INCITS 72-1981(R1993)

Parallel Recorded Magnetic Tape Cartridge for Information Interchange, 4-Track, 0.250 Inch (6.30 mm), 1600 bpi (63 bpmm), Phase Encoded (formerly ANSI X3.72-1981(R1993)) InterNational Committee for Information Technology Standards (formerly NCITS) / 01-Jan-1981