【国外标准】 Information technology - 25.4 mm (1 in) Type DCRsi Recorded Instrumentation - Digital Cartridge Tape Format

This standard establishes the format of information on 25.4 mm (1 in) type DCRsi instrumentation digital cartridges. It specifies the dimensions and locations of the transverse scan data and pilot tone track, the control track and the longitudinal data track. It defines the formatting, randomizing, ECC, and other recording requirements of the data blocks forming the transverse data record, containing user data and other associated data and specifies the content, format, and recording method for the control record to ensure that a compliant recorder will be able to reproduce the recorded tape. This standard also specifies the recording requirements for the longitudinal records contained in the longitudinal data tracks. Additionally this standard specifies the prerecord and post-record zones of the transverse scan tracks and the longitudinal data track. The physical requirements, magnetic requirements and test methods for the magnetic tape and tape cartridge are also specified in this standard. All dimensions given are metric with their corresponding U.S. customary engineering units (similar to British Imperial units) shown in parentheses.