ISO IEC 17913 pdf download

ISO IEC 17913 pdf download Information technology — 1 2,7 mm 128-track magnetic tape cartridge for information interchange — Parallel serpentine format
1 Scope
This International Standard specifies the physical and magnetic characteristics of a magnetic tape cartridge, using a magnetic tape 12,7 mm wide, so as to provide physical interchange of such cartridges between drives. It also specifies the quality of the recorded signals, the recording method and the recorded format known as Parallel Serpentine, thereby allowing data interchange between drives by means of such cartridges. The format supports variable length Logical Records, high speed search, and the use ofthe algorithm for data compression specified in International Standard ISO/IEC 15200.
Information interchange between systems also requires, at a minimum, agreement between the interchange parties upon the interchange code(s) and the specification ofthe structure and labelling ofthe information on the interchanged cartridge.
Together with a standard for volume and file structure, e.g. International Standard ISO 1001, this International Standard provides for full data interchange between data processing systems.
2 Conformance
2.1 Magnetic tape cartridge
A tape cartridge shall be in conformance with this International Standard if it meets all the mandatory requirements specified herein. The tape requirements shall be satisfied throughout the extent ofthe tape.
2.2 Generating system
A generating system shall be in conformance with this International Standard ifit generates a tape according to 2.1.
2.3 Receiving system
A receiving system shall be in conformance with this International Standard ifit can read all tapes according to 2.1.
3 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members ofISO and IEC maintain registers ofcurrently valid International Standards.
ISO 1001: 1986, Information processing — File structure and labelling ofmagnetic tapes for information interchange.
IEC 60950:1999, Safety ofinformation technology equipment.
ISO/IEC 15200:1996, Information technology— Adaptive Lossless Data Compression algorithm (ALDC).
ISO/R 527:1966, Plastics — Determination oftensile properties.
ISO/IEC 646:1991, Information technology — ISO 7-bit coded character set for information interchange.
ISO 683-13:1986, Heat-treatable steels, alloy steels and free-cutting steels — Part 13: Wrought stainless steels.
ANSI MH10.8M-1993, Materials Handling — Unit Loads and Transport Packages — Bar Code Symbols.
4 Terms and definitions
For the purposes ofthis International Standard, the following terms and definitions apply.
4.1 algorithm: A set ofrules for transforming the logical representation ofdata.
4.2 anhysteretic erase: A process oferasure utilising an alternating magnetic field ofdecaying level.