Specification for information interchange on 3.81 mm (0.150 in) magnetic tape cassette at 4 cpmm (100 cpi), phase encoded at 63 ftpmm (1600 ftpi)
3.81毫米(0.150英寸)盒式磁带信息交换规范
Specifies a 3.81 mm tape in a cassette to be physically interchangeable between information processing systems for the exchange of data using the UK 7-bit data code (BS 4730) or any 7-bit or 8-bit code structure (BS 4953).Cross References:BS 4730ISO 2022