1、Reference numberISO/IEC 18810:2001(E)ISO/IEC 2001Information technology 8 mm widemagnetic tape cartridge for informationinterchange Helical scan recording AIT-2with MIC formatTechnologies de linformation Cartouche bande magntique de 8mmde large pour lchange dinformation Enregistrement par balayage e
2、nspirale AIT-2 avec format MICNational Standard of CanadaCAN/CSA-ISO/IEC 18810:04(ISO/IEC 18810:2001)International Standard ISO/IEC 18810:2001 (first edition, 2001-02-01) has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 18810:04, which has been approved as a National Standa
3、rd of Canadaby the Standards Council of Canada.ISBN 1-55397-297-X January 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 a
4、ccredited by a federation of independent, autonomousthe Standards Council 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
5、 national interest.engaged in standards development and certification The 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 inc
6、luding manufacturers, health, safety, and welfare of the public, assisting 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
7、industry and commerce cooperation in the field of standards.and often adopted 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 a
8、nd construction, Canada and one which reflects a reasonableand the environment. 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 e
9、xtent a balance ofdevelopment by volunteering their time and skills to 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.
10、 It normally is a standardthan 7000 committee volunteers and the 2000 which 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
11、 ofSustaining memberships represent a major source of Canada indicates 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 t
12、heservices in support of and as an extension to its technical content of 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 c
13、ontinually audits and inspects products Those who have a need to apply 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 office
14、s in major to periodic review; therefore, users are cautioned centres across 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
15、 for approving National Standards meet its corporate mission: CSA is an 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 servic
16、es through the use of Ottawa, Ontario, K1P 6N7standards, certification 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 intend
17、ed 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 18810:04 interchange Helical scan record
18、ing AIT-2 with MIC formatInformation technology 8 mm wide magnetic tape cartridge for information January 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 18810:04Information technology 8 mmwide magnetic tape cartridge for information interchange Helical scan recording AIT-2 withMIC formatCS
19、A PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards 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 onInform
20、ation Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecommunication Union (ITU), Canada participates in the International Telegraph andTelephone Con
21、sultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada. (Acommittee membership list is available on request from the CSA Project Manager.) From ti
22、me to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update orcontact a CSA Sales representative. This Standard has been formally approved, without mod
23、ification, bythe Technical Committee and has been approved as a National Standard of Canada by the StandardsCouncil of Canada.January 2004 Canadian Standards Association 2004All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe p
24、ublisher. ISO/IEC material is reprinted with permission. Where the words “this International Standard” appear in thetext, they should be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standard of Canada should be addressed to Canadian Standards Association 5060
25、Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044www.csa.caReference numberISO/IEC 18810:2001(E)ISO/IEC 2001INTERNATIONALSTANDARDISO/IEC18810First edition2001-02-01Information technology 8 mm widemagnetic tape cartridge for informationinterchange Helical scan
26、recording AIT-2with MIC formatTechnologies de linformation Cartouche bande magntique de 8mmde large pour lchange dinformation Enregistrement par balayage enspirale AIT-2 avec format MICISO/IEC 18810:2001(E)PDF disclaimerThis PDF file may contain embedded typefaces. In accordance with Adobes licensin
27、g policy, this file may be printed or viewed but shall notbe edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading thisfile, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Cent
28、ral Secretariat accepts no liability in thisarea.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 relative to the file; the PDF-creation parameterswere optimized for printing. Every care has been taken t
29、o ensure that the file is suitable for use by ISO member bodies. In the unlikely eventthat a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2001All rights reserved. Unless otherwise specified, no part of this publication may be reproduced o
30、r utilized in any form or by any means, electronicor mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member bodyin the country of the requester.ISO copyright officeCase postale 56 Gb7 CH-1211 Geneva 20Tel. + 41 22 749 01 11
31、Fax + 41 22 749 09 47E-mail copyrightiso.chWeb www.iso.chii ISO/IEC 2001 All rights reservedISO/IEC 18810:2001(E) ISO/IEC 2001 All rights reserved iiiContentsSection 1 General 11 Scope 12 Conformance 12.1 Magnetic tape cartridge 12.2 Generating drive 12.3 Receiving drive 13 Normative references 24 D
32、efinitions 24.1 Absolute Frame Number (AFN) 24.2 a.c. 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 24.13 Codeword 24.14 Early Warning Point (EWP) 24.15 End of
33、 Data (EOD) 24.16 Entity 24.17 Error Correcting Code (ECC) 24.18 flux transition position 24.19 flux transition spacing 24.20 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 Tap
34、e 34.26 Memory In Cartridge (MIC) 34.27 Partition Boundary 34.28 Physical Beginning of Tape (PBOT) 34.29 Physical End of Tape (PEOT) 34.30 physical recording density 34.31 pre-recording condition 34.32 processing 34.33 processed data 34.34 Processed Record 34.35 record 34.36 Reference Field 34.37 Se
35、condary Standard Amplitude Calibration Tape 34.38 Secondary Standard Reference Tape 34.39 Separator Mark 4ISO/IEC 18810:2001(E)iv ISO/IEC 2001 All rights reserved4.40 Standard Reference Amplitude (SRA) 44.41 Tape Reference Edge 44.42 Typical Field 44.43 Standard Reference Current 44.44 Test Recordin
36、g Current 44.45 track 44.46 unprocessed data 44.47 Unprocessed Record 45 Conventions and Notations 45.1 Representation of numbers 45.2 Names 46 Acronyms 47 Environment and safety 57.1 Test environment 57.2 Operating environment 57.3 Storage environment 57.4 Transportation 57.5 Safety 57.6 Flammabili
37、ty 5Section 2 - Requirements for the case 68 Dimensional and mechanical characteristics of the case 68.1 General 68.2 Overall dimension 68.3 Holding areas 78.4 Cartridge insertion 78.5 Window 88.6 Loading grips 88.7 Label areas 88.8 Datum areas and Datum holes 88.9 Support areas 98.10 Recognition ho
38、les 108.11 Write-inhibit hole 108.12 Pre-positioning surfaces 118.13 Cartridge lid 118.14 Cartridge reel lock 138.15 Reel access holes 138.16 Interface between the reels and the drive spindles 148.17 Light path 158.18 Position of the tape in the case 158.19 Tape path zone 168.20 Tape access cavity 1
39、68.21 Tape access cavity clearance 168.22 Requirements for the MIC 168.23 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 389.2.1 Length of magnetic tape 389.2.2 Length of l
40、eader 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 38ISO/IEC 18810:2001(E) ISO/IEC 2001 All rights reserved v9.3.2 Width and position of the splicing tape 389.4 Discontinuities 399.5 Tape thickness 399.5.1 Thickness of th
41、e magnetic tape 399.5.2 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 elongatio
42、n 409.12 Electrical resistance 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 4210.4 Overwrite 4210.5 Ease of erasure 4310.6 Tape qual
43、ity 4310.6.1 Missing 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) 4711.3 Sub-G
44、roups 5011.3.1 G1 Sub-Group 5011.3.2 G2 Sub-Group - Randomizing 5111.3.3 G3 Sub-Group 5211.4 Data Block 5211.4.1 ID information 5311.4.2 Recording of the ID Information in the Data Block Headers 5512 Method of recording 6112.1 Physical recording density 6212.2 Long-term average bit cell length 6212.
45、3 Short-term average bit cell length 6212.4 Rate of change 6212.5 Bit shift 6212.6 Read signal amplitude 6212.7 Maximum recorded levels 62ISO/IEC 18810:2001(E)vi ISO/IEC 2001 All rights reserved13 Track geometry 6213.1 Track configuration 6213.2 Average track pitch 6313.3 Variations of the track pit
46、ch 6313.4 Track width 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 6414.2 Margin blocks 6415 Format of a track 6415.1 Track structure 6415.2 Positioning accuracy 6515.3 Tracking scheme 6616 Layout of the
47、 tape 6616.1 Device Area 6716.2 Reference Area 6716.3 Position Tolerance Band No. 1 6816.4 System Area 6816.4.1 System Preamble 6816.4.2 System Log 6816.4.3 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
48、 Data Group 7216.5.3 ECC3 7216.5.4 Multiple Recorded Instances 7316.5.5 Repeated Frames 7316.5.6 Appending and overwriting 7416.6 EOD Area 7516.7 Optional Device Area 7516.8 Logical End Of Tape (LEOT) 7616.9 Logical Beginning of Tape (LBOT) 7616.10 Early Warning Point - EWP 7616.11 Empty Partition 7
49、616.12 Initialization 7617 Housekeeping Frames 7717.1 Amble Frames 7717.2 System Amble Frames 7718 Content of the MIC 78AnnexesA-Measurement of light transmittance 79B-Measurement of Signal-to-Noise Ratio 82C-Method for determining the nominal and the maximum allowable recorded levels (pre-recording condition) 83D-Representation of 16-bit words by 20-Channel bits patterns 84E-Measurement of bit shift 86ISO/IEC 18810:2001(E) ISO/IEC 2001 All rights reserved viiF-Method of measuring the straightness of track edge
