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Description of BS ISO 4057:1986 1992This International Standard specifies the characteristics of a 6.30 mm (0.25 in) magnetic tape cartridge intended for data interchange and physical interchangeability between information processing systems utilizing the ISO 7-bit coded character set (ISO 646), its extensions (ISO 2022) and/or the 8-bit coded character set (ISO 4873). The cartridge is of the twin-hub coplanar type, loaded with a 6.30 mm (0.25 in) magnetic tape for digital recording using the 63 bpmm1) (1 600 bpi2) phase-encoding method. The tape is transported between hubs by an internal belt capstan to the external drive. No tape driving or position sensing elements penetrate the cartridge. The direction of magnetization is in the longitudinal direction of the tape. This International Standard applies to cartridges used for data interchange. Where it applies for testing only, this is specifically stated.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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