As 2241-1991 Data Storage and Transfer Media - 9-Track 12.7 Mm Wide Magnetic Tape for Information Interchange

7/31/2019 As 2241-1991 Data Storage and Transfer Media - 9-Track 12.7 Mm Wide Magnetic Tape for Information Interchange

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AS 22411991ISO/IEC 3788: 1991

Australian Standard

Data storage and transfermedia9-track, 12.7 mm widemagnetic tape for informationinterchange using phase encodingat 126 ftpmm63 cpmm


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This Australian Standard was prepared by Committee IT/10, InformationSystemsEquipment. It was approved on behalf of the Council of StandardsAustralia on 23 November 1990 and published on 28 March 1991.

The f ollowing interests are represented on Committee IT/3:

Australian Bankers Association

Australian Information Industry Association

Data Media Manufacturers

Interface Developers

La Trobe University

Review of Australian Standards. To keep abreast of progress in industry, Australian Standardsare subject to periodic review and are kept up to date by the issue of amendments or new editionsas necessary. It is important therefore that Standards users ensure that they are in possession ofthe latest edition, and any amendments thereto.

Full details of all Australian Standards and related publications will be found in the StandardsAustralia Catalogue of P ublications; t his information is supplemented each month by the magazineThe Australian Standard, which subscribing members receive, a nd which gives details of newpublications, new editions and amendments, and of withdrawn Standards.

Suggestions f or improvements to Australian Standards, addressed to the head office of StandardsAustralia, are welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standardshould be made without delay in order that the matter may be investigated and appropriate actiontaken.


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AS 22411991

Australian Standard

Data storage and transfermedia9-track, 12.7 mm widemagnetic tape for informationinterchange using phase encodingat 126 ftpmm63 cpmm

First published as AS 22411979.Second edition 1991.

PUBLISHED BY ST ANDARDS AUSTRALIA(STANDARDS ASSOCIATION OF AUSTRALIA)1 THE CRESCENT, HOMEBUSH, NSW 2140

ISBN 0 7262 6668 X


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2

PREFACE

This Standard was prepared by the Standards Australia Committee on Information Systems Equipment. It is identical with and has been reproduced from ISO/IEC 3788 Informationprocessing 9-track, 12.7 mm wide magnetic tape for information interchange using p haseencoding at 126 ftpmm 63 cpmm.

Under arrangements made between Standards Australia a nd the International StandardsBodies, ISO and IEC, as well as certain other Standards organizations,users of this AustralianStandard are advised of the following:

(a) Copyright is vested in Standards Australia.

(b) The number of this Standard is not reproduced on each page; its identity is shown onlyon the cover and title pages.

(c) There may be occasional dual language sections, but English is always one of thelanguages reproduced.

(d) Where any cross-reference to page numbers appear within the text, these related to pagenumbering in the International Standard and are to b e disregarded.

For the purpose of this Australian Standard, the ISO/IEC text should be modified as follows:

(i) Decimal marker Substitute a full point for a comma as a decimal marker.(ii) References Replace references to other publications by references to Australian Standards as

follows:

Reference to International Standardor other Publication

ISO/IEC646 Information processing ISO 7-bit

coded character set for informationinterchange

1001 Informationprocessing File struc-ture and label l ing of magnetictapes for information interchange

18 6 4 I nf or ma ti on p r oce ssi ng U n re -corded 12.7 mm (0.5 in) wide mag-netic tape for information inter-ch ang e 3 2 ft pmm ( 800 f tp i )NR Z1, 12 6 f tpm m ( 3 2 00 f tpi )phase encoded and 356 ftpmm(9 0 42 ftpi) NRZ1

2022 Information processing ISO 7-bitand 8-bit coded character setsCoded extension techniques

4873 Information processing ISO 8-bitcode for information interchange Structure and rules for imple-

mentation8064 Information processing Reels for

12 . 7 mm (0 .5 ) w ide ma gne ti ctapesSizes 16, 18 and 22

Australian Standard

AS1766 Information processing ISO 7-bit

coded character set for informationinterchange

1068 Informationprocessing File struc-ture and label l ing of magnetictapes for information interchange

1953 Information processing ISO 7-bitand 8-bit coded character setsCoded extension techniques

3716 Information processing ISO 8-bitcode for information interchange Structure and rules for imple-

mentation

Copyright STANDARDS AUSTRALIA

Users of Standards are reminded that copyright subsists in all Standards Australia publications and software. Except where theCopyright Act allows and except where provided for below no publications or software produced by Standards A ustralia may bereproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in writing fromStandards Australia. Permission may be conditional on an appropriate royalty payment. Requests for permission and information oncommercial software royalties should be directed to the head office of Standards Australia.

Standards Australia will permit up to 10 percent of the technical content pages of a Standard to be copied for useexclusively in-house by purchasers of the Standard without payment of a royalty or advice t o Standards Australia.

Standards Australia will also permit the inclusion of its copyright material in computer software programs for no royaltypayment provided such programs are used exclusively in-house by the creators of the programs.

Care should be taken to ensure that material used is from the current edition of the Standard and that it i s updated whenever theStandard is amended or revised. The number and date of the Standard should t herefore be clearly i dentified.

The use of material in print form or i n computer software programs to be used commercially, with or without payment, or incommercial contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia at any time.


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AUSTRALIAN STANDARD 3

Data Storage and transfer media9-track, 12.7 mmwide magnetic tape for information interchangeusing phase encoding at 126 ftpmm63 cpmm

1 Scope

This International Standard specifies a format andrecording standard for 9-track, 12,7 mm (0,5 in)magnetic tape to be used for data interchange be-

tween information processing systems, communi-cation systems, and associated equipment utilizingthe 7-bit coded character set (see ISO 646), its ex-tension in ISO 2022 where required, or an 8-bitcoded character set (see ISO 4873). Magnetic label-ling for use on magnetic tape is the subject ofISO 1001. The magnetic tape and reel to be usedshall conform to ISO 1864 and/or ISO 8064.

NOTE 1 Numeric values in the SI and/or Imperial measurement

system in this International Standard may have been rounded off

and therefore are consistent with, but not exactly equal to, eachother. Either system may be used, but the two should be neither

intermixed nor reconverted. The original design was made usingthe Imperial measurement system.

2 Normative references

The following standards contain provisions which,through reference in this text, constitute provisions

of this International Standard. At the time of publi-cation, the editions indicated were valid. All stan-dards are subject to revision, and parties toagreements based on this International Standardare encouraged to investigate the possibility of ap-plying the most recent editions of the standards in-dicated below. Members of IEC and ISO maintainregisters of currently valid International Standards.

ISO 646:1983, Information processing ISO 7-bitcoded character set for information interchange.

ISO 1001:1986, Information processing File struc-ture and labelling of magnetic tapes for informationinterchange.

ISO 1864: 1985, Information processing Unrecorded 12,7 mm (0,5 in) wide magnetic tape forinformation interchange 32 ftpmm (800 ftpi) NRZ1,126 ftpmm (3 200 ftpi) phase encoded and356 ftpmm (9 042 ftpi) NRZ1.

ISO 2022:1986, Information processing ISO 7-bitand 8-bit coded character sets Coded extensiontechniques.

ISO 4873:1986, Information processing ISO 8-bitcode for information interchange Structure andrules for implementation.

ISO 8064:1985, Information processing Reels for12,7 mm (0,5 in) wide magnetic tapes Sizes 16,18 and 22.

3 Definitions

For the purposes of this International Standard, thefollowing definitions apply.

3.1 magnetic tape: A tape which will accept andretain magnetic signals intended for input, outputand storage purposes on computers and associatedequipment.

3.2 reference tape: A tape which has been se-lected for given properties for use in calibration.

3.3 Master Standard Reference Tape: Areference tape selected as a standard for signalamplitude.

NOTE 2 Master Standard Reference Tape has been

established by the US National Institute of Standards andTechnology (NIST).

3.4 Secondary Standard Reference Tape: A tape

the performance of which is known and stated inrelation to that of the Master Standard ReferenceTape.

COPYRIGHT


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As 2241-1991 Data Storage and Transfer Media - 9-Track 12.7 Mm Wide Magnetic Tape for Information Interchange