1、 Reference numberISO/IEC 22051:2002(E)ISO/IEC 2002Information technology Data interchange on 12,7 mm, 448-track magnetic tape cartridges SDLT1 format Technologies de linformation change de donnes sur cartouche bande magntique 12,7 mm, 448 pistes Format SDLT1 National Standard of CanadaCAN/CSA-ISO/IE
2、C 22051:04(ISO/IEC 22051:2002)International Standard ISO/IEC 22051:2002 (first edition, 2002-10-01) has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 22051:04, which has been approved as a National Standard of Canadaby the Standards Council of Canada.ISBN 1-55397-268-6 Janua
3、ry 2004The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose auspices this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919 and accredited by a federation of independent, autonomousthe Standards Counc
4、il of Canada to the National organizations working towards the furtherStandards system in 1973. It is a not-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization in the national interest.engaged in standards development and certification T
5、he principal objects of the Council are to foster activities. and promote voluntary standardization as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and users including manufacturers, health, safety, and welfare of the public, assist
6、ing consumers, retailers, unions and professional and protecting the consumer, facilitating domestic organizations, and governmental agencies. The and international trade, and furthering internationalstandards are used widely by industry and commerce cooperation in the field of standards.and often a
7、dopted by municipal, provincial, and A National Standard of Canada is a standard whichfederal governments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, building and construction, Canada and one which reflects a reasonableand the envi
8、ronment. agreement among the views of a number of capableIndividuals, companies, and associations across individuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practicable extent a balance ofdevelopment by volunteering their time and skills to
9、representation of producers, users, consumers, andCSA Committee work and supporting the Associations others with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in hand. It normally is a standardthan 7000 committee volunteers and the 2000 w
10、hich is capable of making a significant and timelysustaining memberships together form CSAs total contribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National Standard ofSustaining memberships represent a major source of Canada indicates
11、that a standard conforms to theincome for CSAs standards development activities. criteria and procedures established by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refer to theservices in support of and as an extension to its technical content o
12、f the standard; this remains thestandards development activities. To ensure the continuing responsibility of the accreditedintegrity of its certification process, the Association standards-development organization.regularly and continually audits and inspects products Those who have a need to apply
13、standards arethat bear the CSA Mark. encouraged to use National Standards of CanadaIn addition to its head office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch offices in major to periodic review; therefore, users are cautioned centres a
14、cross Canada and inspection and testing to obtain the latest edition from the organizationagencies in eight countries. Since 1919, the preparing the standard.Association has developed the necessary expertise to The responsibility for approving National Standards meet its corporate mission: CSA is an
15、 independent of Canada rests with theservice organization whose mission is to provide an Standards Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and services through the use of Ottawa, Ontario, K1P 6N7standards, certification
16、and related services to meet Canadanational and international needs.For further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaAlthough the intended primary application of this Standard is stated in its Scope, it is i
17、mportantto 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 22051:04 448-track magnetic tape cartridges SDLT1 formatInformation technology Data interchange on 12,7 mm,Janu
18、ary 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 22051:04Information technology Datainterchange on 12,7 mm, 448-trackmagnetic tape cartridges SDLT1formatCSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Throug
19、h the CSA Technical Committee on Information Technology (TCIT),Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian
20、National Committee of the IEC. Also, as a member of theInternational Telecommunication Union (ITU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering
21、Committee on Information Technology and deemed acceptable for use in Canada. (Acommittee membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a
22、listing, refer to the CSA Information Products catalogue or CSA Info Update orcontact a CSA Sales representative. This Standard has been formally approved, without modification, bythe Technical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of Canada.January
23、 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 permission. Where the words “this International Standard” appear in thetext, they should
24、 be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standard of Canada should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caReference numberISO/IEC 22051:2002
25、(E)ISO/IEC 2002INTERNATIONAL STANDARD ISO/IEC22051First edition2002-10-01Information technology Data interchange on 12,7 mm, 448-track magnetic tape cartridges SDLT1 format Technologies de linformation change de donnes sur cartouche bande magntique 12,7 mm, 448 pistes Format SDLT1 ISO/IEC 22051:2002
26、(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 not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this fi
27、le, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe 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 r
28、elative 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 member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. IS
29、O/IEC 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in
30、 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.ch Web www.iso.ch ii ISO/IEC 2002 All rights reservedISO/IEC 22051:2002(E) ISO/IEC 2002 All rights reserved iiiContents 1 Scope 1 2 Conformance 1 2.1
31、 Magnetic tape cartridges 1 2.2 Generating systems 1 2.3 Receiving systems 1 3 Normative references 1 4 Terms and definitions 1 4.1 back surface 1 4.2 Beginning-Of-Tape marker (BOT) 1 4.3 block 2 4.4 byte 2 4.5 cartridge 2 4.6 Cyclic Redundancy Check (CRC) character 2 4.7 Error-Detecting Code (EDC)
32、2 4.8 End-Of-Tape marker (EOT) 2 4.9 Entity 2 4.10 Error-Correcting Code (ECC) 2 4.11 Envelope 2 4.12 Envelope size 2 4.13 flux transition position 2 4.14 flux transition spacing 2 4.15 logical track 2 4.16 magnetic tape 2 4.17 Master Standard Reference Tape 2 4.18 object 2 4.19 page 2 4.20 recordin
33、g density 2 4.21 physical track 2 4.22 Record 3 4.23 Reference Edge 3 4.24 Reference Field 3 4.25 Secondary Standard Reference Tape 3 4.26 Standard Reference Amplitude (SRA) 3 4.27 Standard Reference Current 3 4.28 Test Recording Current 3 4.29 Typical Field 3 5 Conventions and notations 3 5.1 Repre
34、sentation of numbers 3 5.2 Dimensions 3 5.3 Names 3 5.4 Acronyms 3 6 Environment and safety 4 6.1 Cartridge and tape testing environment 4 6.2 Cartridge operating environment 4 6.3 Cartridge storage environment 4 6.4 Safety 4 6.5 Flammability 4 6.6 Transportation 4 ISO/IEC 22051:2002(E) iv ISO/IEC 2
35、002 All rights reservedSection 2 - Requirements for the unrecorded tape 5 7 Mechanical and electrical requirements 5 7.1 Material 5 7.2 Tape length 5 7.3 Tape width 5 7.4 Tape thickness 5 7.5 Discontinuity 5 7.6 Longitudinal curvature 5 7.6.1 Requirements 5 7.6.2 Procedure 5 7.7 Out-of-Plane distort
36、ions 5 7.8 Cupping 5 7.9 Roughness of the coating surfaces 6 7.9.1 Roughness of the back coating surface 6 7.9.2 Roughness of the magnetic coating surface 7.10 Coating adhesion 6 7.11 Layer-to-layer adhesion 6 7.11.1 Requirements 6 7.11.2 Procedure 6 7.12 Modulus of elasticity 7 7.12.1 Requirement 7
37、 7.12.2 Procedure 7 7.13 Flexural rigidity 8 7.13.1 Requirement 8 7.13.2 Procedure 8 7.14 Tensile yield force 8 7.14.1 Procedure 8 7.15 Electrical resistance 8 7.15.1 Requirement 8 7.15.2 Procedure 8 7.16 Inhibitor tape 9 7.17 Light transmittance of the tape and the leader 9 7.18 Abrasivity 9 7.19 C
38、oefficient of dynamic friction 9 7.19.1 Requirements 9 7.19.2 Procedure for the measurement of the friction between the magnetic surface and the back surface 9 7.19.3 Procedure for the measurement of the friction between the magnetic surface or the back surface and calcium titanate ceramic 10 7.20 S
39、ervo 10 7.20.1 Servo Bands 10 7.20.2 Servo Tracks 11 7.20.3 Signal 11 7.20.4 Signal-to Noise Ratio 11 7.20.5 Missing servo mark 11 8 Magnetic recording characteristics 12 ISO/IEC 22051:2002(E) ISO/IEC 2002 All rights reserved v8.1 Typical Field 13 8.2 Signal amplitude 13 8.3 Resolution 13 8.4 Overwr
40、ite 13 8.4.1 Requirement 13 9 Tape quality 13 9.1 Missing pulses 13 9.1.1 Requirement 13 9.2 Missing pulse zone 13 9.2.1 Requirement 13 9.3 Tape durability 13 Section 3 - Mechanical specifications of the tape cartridge 14 10 General 14 10.1 Bottom side and right side 14 10.2 Back side and left side
41、15 10.3 Tape reel 16 10.4 Tape leader 17 10.5 Front side 18 10.6 Operation of the cartridge 18 10.7 Tape winding 19 10.8 Moment of inertia 19 10.9 Material 19 Section 4 - Requirements for an interchanged tape 29 11 Tape format 29 11.1 Reference Edge 29 11.2 Direction of recording 29 11.3 Tape layout
42、 29 11.3.1 Data Area 29 11.3.2 Forward Alignment and Directory Area 31 11.3.3 Reverse Alignment Area at EOT 32 12 Data format 33 12.1 Record 33 12.2 Data Bytes 33 12.3 Data Field 33 12.3.1 Pages 34 12.3.2 Pad Bytes 34 12.3.3 Page layout 34 12.3.4 MAP entries 34 12.3.5 EDC 35 12.4 Data Blocks 35 12.4
43、.1 Control Field 1 (CF1) 36 12.4.2 Control Field 2 (CF2) 37 12.4.3 CRC 39 13 Method of recording 39 13.1 Physical recording density 40 13.2 Channel bit cell length 40 ISO/IEC 22051:2002(E) vi ISO/IEC 2002 All rights reserved13.2.1 Average Channel bit cell length 40 13.2.2 Long-term average Channel b
44、it cell length 40 13.2.3 Short-term average Channel bit cell length 13.3 Read signal amplitude 40 13.4 Channel skew 40 14 Block Recording Format 41 14.1 Scrambler 41 14.2 Modulation 41 14.2.1 Modulation process 41 14.2.2 Modulated Data Group 42 14.3 Precoder 42 14.4 Recording Data Block 43 14.4.1 Pr
45、eamble 43 14.4.2 Sync 43 15 Types and Use of Blocks 43 15.1 Types of Blocks 43 15.2 Use of blocks 43 15.2.1 Track ID Start Blocks 43 15.2.2 End of Track Blocks (EOTR) 44 15.2.3 End of Data of Data Blocks (EOD) 44 15.2.4 ECC Blocks 44 15.2.5 Track ID End Blocks 44 16 Format of Entities 44 17 Format o
46、f Envelopes 44 18 Error handling 44 Annexes A - Measurement of light transmittance 45 B - Procedure for the measurement of abrasivity 48 C - Generation of the Data Block CRCs 50 D - Generation of page CRCs 51 E - ECC generation 52 F - Allocation of Physical Tracks to Logical Tracks 55 G - Recommenda
47、tions for transportation 56 H - Inhibitor tape 57 J - Recommendations on tape durability 58 K - Handling guidelines 59 ISO/IEC 22051:2002(E) ISO/IEC 2002 All rights reserved viiForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) f
48、orm the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC
49、 technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of the joint technical committee is to prepare International Standards. Draft Internatio
