ONORM EN 29661-1994
信息处理.12.7mm(0,5 in)盒式磁带的数据交换.18条磁道,每毫米数据1491比特(每英尺数据37871 比特) (ISO/IEC 9661-1988年,含技术勘误表2-1992)
Information processing. Data interchange on 12,7 mm (0,5 in) magnetic tape cartridges. 18 tracks, 1491 data bytes per millimetre (37871 data bytes per inch) (ISO/IEC 9661:1988 including Technical Corrigendum 2:1992)