1、 Reference numberISO/IEC 23651:2003(E)ISO/IEC 2003Information technology 8 mm wide magnetic tape cartridge for information interchange Helical scan recording AIT-3 format Technologies de linformation Cartouche de bande magntique de 8 mm de large pour change dinformations Enregistrement par balayage
2、en spirale Format AIT-3 National Standard of CanadaCAN/CSA-ISO/IEC 23651:04(ISO/IEC 23651:2003)International Standard ISO/IEC 23651:2003 (first edition, 2003-08-01) has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC 23651:04, which has been approved as a NationalStandard of C
3、anada by the Standards Council of Canada.ISBN 1-55397-731-9 December 2004The Canadian Standards Association (CSA), under whose auspices this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a
4、not-for-profit, nonstatutory, voluntary membership association engaged in standards development and certification activities. CSA standards reflect a national consensus of producers and users including manufacturers, consumers, retailers, unions and professional organizations, and governmental agenc
5、ies. The standards are used widely by industry and commerce and often adopted by municipal, provincial, and federal governments in their regulations, particularly in the fields of health, safety, building and construction, and the environment. Individuals, companies, and associations across Canada i
6、ndicate their support for CSAs standards development by volunteering their time and skills to CSA Committee work and supporting the Associations objectives through sustaining memberships. The more than 7000 committee volunteers and the 2000 sustaining memberships together form CSAs total membership
7、from which its Directors are chosen. Sustaining memberships represent a major source of income for CSAs standards development activities. The Association offers certification and testing services in support of and as an extension to its standards development activities. To ensure the integrity of it
8、s certification process, the Association regularly and continually audits and inspects products that bear the CSA Mark. In addition to its head office and laboratory complex in Toronto, CSA has regional branch offices in major centres across Canada and inspection and testing agencies in eight countr
9、ies. Since 1919, the Association has developed the necessary expertise to meet its corporate mission: CSA is an independent service organization whose mission is to provide an open and effective forum for activities facilitating the exchange of goods and services through the use of standards, certif
10、ication and related services to meet national and international needs.For further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaThe Standards Council of Canada is the coordinating body of the National Standards syste
11、m, a federation of independent, autonomous organizations working towards the further development and improvement of voluntary standardization in the national interest. The principal objects of the Council are to foster and promote voluntary standardization as a means of advancing the national econom
12、y, benefiting the health, safety, and welfare of the public, assisting and protecting the consumer, facilitating domestic and international trade, and furthering international cooperation in the field of standards. A National Standard of Canada is a standard which has been approved by the Standards
13、Council of Canada and one which reflects a reasonable agreement among the views of a number of capable individuals whose collective interests provide to the greatest practicable extent a balance of representation of producers, users, consumers, and others with relevant interests, as may be appropria
14、te to the subject in hand. It normally is a standard which is capable of making a significant and timely contribution to the national interest. Approval of a standard as a National Standard of Canada indicates that a standard conforms to the criteria and procedures established by the Standards Counc
15、il of Canada. Approval does not refer to the technical content of the standard; this remains the continuing responsibility of the accredited standards development organization. Those who have a need to apply standards are encouraged to use National Standards of Canada whenever practicable. These sta
16、ndards are subject to periodic review; therefore, users are cautioned to obtain the latest edition from the organization preparing the standard.The responsibility for approving National Standards of Canada rests with theStandards Council of Canada270 Albert Street, Suite 200Ottawa, Ontario, K1P 6N7C
17、anadaAlthough the intended primary application of this Standard is stated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO/IEC 23651:04Informat
18、ion technology 8 mm wide magnetic tape cartridgefor information interchange Helical scan recording AIT-3 formatDecember 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 23651:04Information technology 8 mm wide magnetic tape cartridge for information interchange Helical scan recording AIT-3 f
19、ormatCSA PrefaceStandards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1
20、 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and
21、Telephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the Strategic Steering Committee on Information Technology and deemed acceptable for use in Canada. (A committee membership list is available on request from the CSA Project Ma
22、nager.) From time to time, ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approval and publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update or contact a CSA Sales representative. This Standard has been formally app
23、roved as a National Standard of Canada by the Standards Council of Canada.December 2004 Canadian Standards Association 2004All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprinted with permis
24、sion. Where the words “this International Standard” appear in the text, they should be interpreted as “this National Standard of Canada”.Inquiries regarding this National Standard of Canada should be addressed toCanadian Standards Association5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada
25、 L4W 5N61-800-463-6727 416-747-4044www.csa.caReference numberISO/IEC 23651:2003(E)ISO/IEC 2003INTERNATIONAL STANDARD ISO/IEC23651First edition2003-08-01Information technology 8 mm wide magnetic tape cartridge for information interchange Helical scan recording AIT-3 format Technologies de linformatio
26、n Cartouche de bande magntique de 8 mm de large pour change dinformations Enregistrement par balayage en spirale Format AIT-3 ISO/IEC 23651:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall no
27、t be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adob
28、e is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO m
29、ember bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electroni
30、c or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org W
31、eb www.iso.org ii ISO/IEC 2003 All rights reservedISO/IEC 23651:2003(E) ISO/IEC 2003 All rights reserved iiiContents1Scope 12 Conformance 12.1 Magnetic tape cartridge 12.2 Generating drive 12.3 Receiving drive 13 Normative references 24 Terms and definitions 24.1 Absolute Frame Number (AFN) 24.2 a.c
32、. erase 24.3 Access 24.4 algorithm 24.5 Area ID 24.6 Automatic Track Finding (ATF) 24.7 Average Signal Amplitude 24.8 azimuth 24.9 back surface 24.10 byte 24.11 cartridge 24.12 Channel bit 34.13 Codeword 34.14 Early Warning Point (EWP) 34.15 End of Data (EOD) 34.16 Entity 34.17 Error Correcting Code
33、 (ECC) 34.18 flux transition position 34.19 flux transition spacing 34.20 Frame 34.21 Housekeeping Frame 34.22 Logical Beginning of Tape (LBOT) 34.23 magnetic tape 34.24 Master Standard Amplitude Calibration Tape 34.25 Master Standard Reference Tape 34.26 Partition Boundary 34.27 Physical Beginning
34、of Tape (PBOT) 34.28 Physical End of Tape (PEOT) 44.29 physical recording density 44.30 pre-recording condition 44.31 processing 44.32 processed data 44.33 Processed Record 44.34 record 44.35 Reference Field 44.36 Remote Memory In Cartridge (RMIC) 44.37 Secondary Standard Amplitude Calibration Tape
35、44.38 Secondary Standard Reference Tape 4Section 1 - General 1ISO/IEC 23651:2003(E)iv ISO/IEC 2003 All rights reserved4.39 Separator Mark 44.40 Standard Reference Amplitude (SRA) 44.41 Standard Reference Current 44.42 Tape Reference Edge 44.43 Test Recording Current 44.44 track 54.45 Typical Field 5
36、4.46 unprocessed data 54.47 Unprocessed Record 55 Conventions and Notations 55.1 Representation of numbers 55.2 Names 56 Acronyms 57 Environment and safety 67.1 Test environment 67.2 Operating environment 67.3 Storage environment 67.4 Transportation 67.5 Safety 67.6 Flammability 6Section 2 - Require
37、ments for the case 68 Dimensional and mechanical characteristics of the case 68.1 General 68.2 Overall dimension 78.3 Holding areas 78.4 Cartridge insertion 88.5 Window 88.6 Loading grips 98.7 Label areas 98.8 Datum areas and Datum holes 98.9 Support areas 108.10 Recognition holes 108.11 Write-inhib
38、it hole 118.12 Pre-positioning surfaces 128.13 Cartridge lid 128.14 Cartridge reel lock 138.15 Reel access holes 148.16 Interface between the reels and the drive spindles 148.17 Light path 158.18 Position of the tape in the case 168.19 Tape path zone 168.20 Tape access cavity 168.21 Tape access cavi
39、ty clearance 178.22 Requirements for the RMIC 178.23 Recognition recesses 18Section 3 - Requirements for the unrecorded tape 389 Mechanical, physical and dimensional characteristics of the tape 389.1 Materials 389.2 Tape length 38ISO/IEC 23651:2003(E) ISO/IEC 2003 All rights reserved v9.2.1 Length o
40、f magnetic tape 389.2.2 Length of leader and trailer tapes 389.2.3 Length of the splicing tapes 389.3 Tape width 389.3.1 Width of magnetic, leader and trailer tapes 389.3.2 Width and position of the splicing tape 389.4 Discontinuities 399.5 Tape thickness 399.5.1 Thickness of the magnetic tape 399.5
41、.2 Thickness of the leader and trailer tape 399.5.3 Thickness of the splicing tape 399.6 Longitudinal curvature 399.7 Cupping 399.8 Coating adhesion 399.9 Layer-to-layer adhesion 409.10 Tensile strength 409.10.1 Breaking strength 409.10.2 Yield strength 409.11 Residual elongation 409.12 Electrical r
42、esistance of the recording surface 409.13 Tape winding 419.14 Light transmittance of the tape 419.15 Recognition stripe 4110 Magnetic recording characteristics 4210.1 Typical Field 4210.2 Signal Amplitude 4210.3 Resolution 4310.4 Overwrite 4310.5 Ease of erasure 4310.6 Tape quality 4310.6.1 Missing
43、pulses 4310.6.2 Missing pulse zone 4310.7 Signal-to-Noise Ratio (SNR) characteristic 43Section 4 - Requirements for an interchanged tape 4411 Format 4411.1 General 4411.2 Basic Groups 4411.2.1 Entity 4511.2.2 Group Information Table 4511.2.3 Block Access Table (BAT) 4811.3 Sub-Groups 5011.3.1 G1 Sub
44、-Group 5011.3.2 G2 Sub-Group - Randomizing 5111.3.3 G3 Sub-Group 5211.4 Data Block 5311.4.1 ID information 5311.4.2 Recording of the ID Information in the Data Block Headers 5612 Method of recording 6112.1 Physical recording density 6212.2 Long-term average bit cell length 6212.3 Short-term average
45、bit cell length 6212.4 Rate of change 62ISO/IEC 23651:2003(E)vi ISO/IEC 2003 All rights reserved12.5 Bit shift 6212.6 Read signal amplitude 6212.7 Maximum recorded levels 6213 Track geometry 6213.1 Track configuration 6213.2 Average track pitch 6313.3 Variations of the track pitch 6313.4 Track width
46、 6313.5 Track angle 6313.6 Track edge straightness 6313.7 Track length 6313.8 Azimuth angles 6314 Recorded patterns 6414.1 Recorded Data Block 6415 Format of tracks 6415.1 Track structure 6415.2 Positioning accuracy 6415.3 Tracking scheme 6415.4 Generation of Margin Blocks 6516 Layout of the tape 66
47、16.1 Device Area 6616.2 Reference Area 6716.3 Position Tolerance Band No. 1 6716.4 System Area 6716.4.1 System Preamble 6716.4.2 System Log 6716.4.3 System Postamble 7216.4.4 Position Tolerance Band No. 2 7216.4.5 Vendor Group Preamble 7216.5 Data Area 7216.5.1 Vendor Group 7216.5.2 Recorded Data Gr
48、oup 7216.5.3 ECC3 7316.5.4 Multiple Recorded Instances 7416.5.5 Repeated Frames 7416.5.6 Appending and overwriting 7516.6 EOD Area 7616.7 Optional Device Area 7616.8 Logical End Of Tape (LEOT) 7716.9 Logical Beginning of Tape (LBOT) 7716.10 Early Warning Point - EWP 7716.11 Empty Partition 7716.12 I
49、nitialization 7717 Housekeeping Frames 7817.1 Amble Frames 7817.2 System Amble Frames 7818 AIT Remote Memory In Cartridge (AIT RMIC) 7818.1 General 7818.2 Content of the AIT RMIC 7818.2.1 Manufacturers Information Section 79ISO/IEC 23651:2003(E) ISO/IEC 2003 All rights reserved vii18.2.2 Communication Information Section 8218.2.3 Mechanism Error Log Information Section 8218.2.4 Memory Management Information Section 8318.2.5 Volume Information Section 8418.2.6 Volume Use History Information Section 8518.3
