Guide to construction and use of 6.30 mm (0.25 in) magnetic tape cartridge for data interchange, using IMFM recording at 252 ftpmm (6400 ftpi).-Track format and method of recording for data interchange in start/stop mode
数据交换用6.30毫米（0.25英寸）盒式磁带的构造和使用指南 使用252 ftpmm（6400 ftpi）的IMFM记录 启动/停止模式下数据交换的磁道格式和记录方法