
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)
出版:British Standards Institution

专家解读视频
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).
© British Standards Institution 2013
General notes:
This standard has been re-declared obsolescent for a further period as it is no longer relevant
Amendment notes:
AMD 4946 published 31 March 1986
ISO 3407:1983 - Equivalent