ISO IEC 16382:2000 pdf download – Information technology — Data interchange on 1 2,7 mm 208-track magnetic tape cartridges — DLT 6 format.
4.2 azimuth: The angular deviation, in degrees of arc, of the mean flux transition line of the recording made on a track from a line normal to the Reference Edge. 4.3 back surface: The surface ofthe tape opposite the magnetic coating which is used to record data. 4.4 Beginning-Of-Tape marker (BOT): A hole punched on the centreline of the tape towards the end nearest to the leader. 4.5 block: A set ofcontiguous bytes recorded on a physical track and considered as a unit. 4.6 byte: An ordered set ofbits acted upon as a unit. NOTE – In this International Standard, all bytes are 8-bit bytes. 4.7 cartridge: A case containing a single supply reel of 12,7 mm wide magnetic tape with a leader attached at the outer end. 4.8 Cyclic Redundancy Check (CRC) character: A 64-bit character, generated by a mathematical computation, used for error detection. 4.9 Early Warning (EW): A signal generated by the drive indicating the approaching end ofthe recording area. 4.10 Error-Detecting Code (EDC): A mathematical computation yielding check bytes used for error detection. 4.11 End-Of-Tape marker (EOT): A hole punched on the centreline of the tape towards the end farthest from the leader. 4.12 Entity: A group oftwenty blocks treated as a logical unit and recorded on a logical track, except Filler Blocks, ifany. 4.13 Error-Correcting Code (ECC): A mathematical computation yielding check bytes used for the correction of errors detected by the CRC and the EDC. 4.14 Envelope: A group ofEntities. 4.15 Envelope size: The number ofEntities in an Envelope. 4.16 flux transition position: The point which exhibits the maximum free-space flux density normal to the tape surface. 4.17 flux transition spacing: The distance on the magnetic tape between successive flux transitions. 4.18 Group Record: A Record consisting ofa series ofRecords ofequal size. 4.19 logical track: A group offour physical tracks that are written or read simultaneously. 4.20 magnetic tape: A tape that accepts and retains magnetic signals intended for input, output, and storage purposes on computers and associated equipment. 4.21 Master Standard Reference Tape: A tape selected as the standard for Reference Field, signal amplitude, resolution, peakshift, and overwrite characteristics. NOTE – The Master Standard Reference Tape has been established by the Quantum Corporation. 4.22 object: A Record or a page oftype Tape Mark. 4.23 page: A logical division ofa block. 4.24 physical recording density: The number of recorded flux transitions per unit length of track, expressed in flux transitions per millimetre (ftpmm). 4.25 physical track: A longitudinal area on the tape along which a series ofmagnetic signals can be recorded. 4.26 Record: A collection ofUser Bytes, the number ofwhich is determined by the host. 4.27 Reference Edge: The bottom edge of the tape when viewing the magnetic coating of the tape with the BOT to the left and the EOT to the right ofthe observer.
ISO IEC 16382:2000 pdf download – Information technology — Data interchange on 1 2,7 mm 208-track magnetic tape cartridges — DLT 6 format
