EN 21864:1993
信息技术.信息交换用12.7 mm(0.5英寸)宽空白磁带.32etpm(800 ftpi)NRZI,相位编码的126epmm(3200ftpi)和356ftpmm(9042 ftpi)NRZI(ISO/IEC 1864-1992)
Information Technology - Unrecorded 12,7 mm (0.5 in) Wide Magnetic Tape for Information Interchange - 32 ftpmm (800 ftpi), NRZ1, 126 ftpmm (3 200 ftpi) Phase Encoded and 356 ftpmm (9 042 ftpi), NRZ1