ISO/IEC 3788:1990
信息处理 以126 itpmm(3200 ftpi)、63 pmm(1600 cpi)磁带调相制,信息交换用9磁道12.7mm(0.5in)宽磁带
Information processing; 9-track, 12,7 mm (0,5 in) wide magnetic tape for information interchange using phase encoding at 126 ftpmm (3200 ftpi); 63 cpmm (1600 cpi)