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ISO 4057:1986

Information processing -- Data interchange on 6,30 mm (0.25 in) magnetic tape cartridge, 63 bpmm (1 600 bpi) phase-encoded

This standard has been reviewed and then confirmed in 2013 
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Abstract

Outlines the characteristics of a 6.30 mm (0,25 in) magnetic tape cartridges 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 8-bit character set (ISO 4873). The cartidge is of the twin-hub coplanar type, loaded with 6,30 mm (0,25 in) magnetic tape tor digital recording using the 53 bpmm (1600 bpi) phase-encoding method.

 

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