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(甲)9磁道8行/毫米(200行/时)的标准(ISO 建议R1862-1971)一适用范围本《建议》适用于9磁道、12.7毫米(1/2时)宽的磁带。存储密度是8行/毫米(200行/时)。这种磁带可以在用ISO 建议R646规定的6位或7位代码的信息处理系统间进行交换。本《建议》仅适用于数字记录磁带,磁带上磁化方向是沿长度方向(不是横向)。二用语定义三反射标记(以上两节内容同ISO/R 1864-1971,译文见本刊上期。)四卷绕磁带的方向一盘用于信息交换用的磁带,绕在带盘上时,应使磁层朝内,基准边在带盘的正面,即
(A) 9 tracks 8 lines / mm (200 lines / hour) standard (ISO recommends R1862-1971) A scope of application This Recommendation applies to 9 tracks, 12.7 mm (1/2 hours) wide tape. Storage density is 8 lines / millimeter (200 lines / hour). Such tapes can be exchanged between information processing systems using either 6-bit or 7-bit code as defined by ISO6496. This Recommendation applies only to digitally recorded tapes where the magnetization direction is along the length (not across). Two terms define the three reflective markings (the two sections are the same as ISO / R 1864-1971, translation, see the issue.) Four winding tape direction A plate for information exchange tape, when wrapped around the reel should be With the magnetic layer inwards, the reference side is on the front of the reel, ie