提供8000 bpi（315 bpmm）的0.250英寸（6.3 mm）宽、4轨和9轨盒式磁带的格式和记录标准，用于信息处理系统、通信系统和相关设备之间的信息交换，使用交换双方商定的信息交换标准代码。本标准规定了4音轨和9音轨格式的要求。这两种格式不应存在于同一盒带上。本标准仅适用于0.250英寸（6.30毫米）盒式磁带上的记录，并补充了美国信息系统国家标准？信息交换用未记录盒式磁带，0.250英寸（6.30毫米），6400英寸？10000 ftpi（252？394 ftpmm），ANSI X3。127-1987.

Provides a format and recording standard for an 8000-bpi (315-bpmm) streaming 0.250-inch (6.3-mm) wide, 4- and 9-track, magnetic tape in a cartridge to be used for information interchange between information processing systems, communication systems, and associated equipment utilizing a standard code for information interchange, as agreed upon by the interchange parties. This standard specifies the requirements for the 4-track and 9-track formats. The two formats shall not exist on the same cartridge. This standard refers solely to recording on the 0.250-inch (6.30-mm) magnetic tape cartridge and complements American National Standard for Information systems?Unrecorded magnetic tape cartridge for information interchange, 0.250 inch (6.30 mm), 6400?10 000 ftpi (252?394 ftpmm), ANSI X3.127-1987.