ISO/IEC 11321:1992 PDF

Name: ISO/IEC 11321:1992 — Information technology — 3,81 mm wide magnetic tape cartridge for information interchange — Helical scan recording — DATA/DAT format
SKU: ISO/IEC 11321:1992
Price: 25 EUR
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Information technology — 3,81 mm wide magnetic tape cartridge for information interchange — Helical scan recording — DATA/DAT format

Название (английский):

ISO/IEC 11321:1992

Information technology — 3,81 mm wide magnetic tape cartridge for information interchange — Helical scan recording — DATA/DAT format

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 127
Дата публикации:: 30 декабря 1992 г.
Издание:: ISO/IEC IS 11321 edition 1 version 1
ICS:: 35.220.23

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Описание (английский):

Specifies the physical and magnetic characteristics and also the quality of the recorded signal, the recorded format (DATA/DAT) and the recording method, thereby allowing data interchange between drives by means of such magnetic tape cartridges.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/IEC 11321:1992 - "Information technology - 3,81 mm wide magnetic tape cartridge for information interchange - Helical scan recording - DATA/DAT format" defines a complete interchange standard for 3.81 mm (often written 3,81 mm) magnetic tape cartridges using helical-scan recording in the DATA/DAT format. The standard specifies the physical and mechanical case and tape characteristics, magnetic recording parameters, the recorded signal quality and formal DATA/DAT format, and the recording method so cartridges recorded on one drive can be read by another.

Keywords: ISO/IEC 11321, 3.81 mm magnetic tape cartridge, helical scan, DATA/DAT format, tape interchange, tape drive interoperability.

Key topics and requirements

Physical case and tape dimensions: mandatory mechanical and dimensional requirements for the cartridge case, lid, hubs, label areas and optical detection windows to ensure consistent drive handling and insertion.

Unrecorded tape characteristics: material, tape width, thickness, curvature, leader/trailer attachments, layer adhesion and tensile properties required across the full tape length.

Magnetic recording characteristics: specifications for optimum recording field, average signal amplitude, resolution, overwrite behavior, ease of erasure, missing pulses and signal-to-noise ratio (S/N).

DATA/DAT format and track layout: detailed frame/group/sub-group structures, main and sub-data blocks, pack items, group formats (Format 0/1), track geometry, azimuth arrangements, track pitch and track capacity for reliable helical-scan interchange.

Recording method: definitions of physical recording density (flux transitions per mm), long-/short-term bit cell lengths, bit shift limits, read-signal amplitude and maximum recorded levels.

Conformance rules: criteria for cartridges, generating systems (writers) and receiving systems (readers) to claim conformance.

Environment and safety: specified test/operating/storage conditions (e.g., test conditioning: 23°C ±2°C, 40–60% RH) and handling recommendations.

Test methods and annexes: annexes provide measurement methods (light transmittance, S/N, bit-shift, track-edge linearity, read-after-write, calibration tapes).

Applications and who uses it

Ensures interchangeability of helical-scan DATA/DAT cartridges between drives and vendors.

Used by tape drive and cartridge manufacturers, tape media suppliers, system integrators, data center and archival professionals, and forensic/data-recovery specialists working with legacy DAT media.

Relevant for organizations maintaining long-term archives, migrating legacy DAT data, or developing compliant tape-drive hardware/firmware.

Related standards and notes

Originated as ECMA-146 and adopted by ISO/IEC JTC 1.

Contains normative references to related ISO/IEC standards (e.g., character sets, mechanical testing) and includes patent notices (noting existing patent interests and licensing references).

Keywords for SEO: tape archival standard, magnetic tape interchange, DAT format standard, helical-scan tape specification.

ISO/IEC 11321:1992 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and who uses it

Related standards and notes

Технические детали

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