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This Standard ECMA-62 specifies the physical and magnetic characteristics of 12,7 mm, 9-track magnetic tape with reel, to enable interchangeability of such tapes. It also provides a format and three recording methods, thus allowing together with Standard ECMA-13 for Magnetic Tape Labeling full data interchange by means of such magnetic tapes.
The three methods defined in this Standard are:
- NRZ1 at the physical recording density of 32 ftpmm, yielding a data density of 32 cpmm,
- Phase Encoding at the physical recording density of 126 ftpmm, yielding a data density of 63 cpmm,
- NRZ1 at the physical recording density of 356 ftpmm, yielding a data density of 246 cpmm when Group Coded Recording is used.
- ECMA-62, 1st edition, January 1980Download