Information processing; data interchange on 12,7 mm (0.5 in) wide magnetic tape cartridges; 18 tracks, 1491 data bytes per millimetre (37871 data bytes per inch); technical corrigendum 2

This technical corrigendum addresses specific technical modifications to an international standard concerning data exchange procedures on 12.7mm wide cassette tapes. The document focuses on a format utilizing eighteen recording tracks with a density of 1491 bytes per millimeter, equivalent to 37871 bytes per inch. Issued following the initial establishment of the base standard in the late 1980s, this update serves to correct technical errors or clarify ambiguities identified in the original publication. The corrigendum does not alter the fundamental structure of the data exchange protocol but ensures greater precision in the implementation of the specified track layout and density specifications. It is intended for use by manufacturers of data storage media and developers of software systems designed to interface with magnetic tape recording equipment operating under this specific format. By providing these necessary amendments, the document helps maintain consistency and reliability in data interchange processes across different systems and organizations utilizing the 0.5-inch cassette format. The content represents a formal update issued by the global standards body responsible for maintaining the integrity of technical specifications in information processing and data storage technologies.