This International Standard specifies the physical and magnetic characteristics of a 12,7 mm wide, 448-track magnetic tapecartridge, to enable physical interchangeability of such cartridges between drives. It also specifies the quality of the recordedsignals, a format - called Super Digital Linear Tape 1 (SDLT 1) - and a recording method, thereby allowing data interchangebetween drives. Together with a labelling standard, for instance ISO 1001 for Magnetic Tape Labelling, it allows full datainterchange by means of such magnetic tape cartridges.