1、Reference numberISO/IEC 18836:2001(E)ISO/IEC 2001Information technology 8 mm widemagnetic tape cartridge for informationinterchange Helical scan recording MammothTape-2 formatTechnologies de linformation Cartouche de bande magntique de 8mmde large pour lchange dinformation Enregistrement par balayag
2、e enspirale Format MammothTape-2National Standard of CanadaCAN/CSA-ISO/IEC 18836:04(ISO/IEC 18836:2001)International Standard ISO/IEC 18836:2001 (first edition, 2001-02-15) has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 18836:04, which has been approved as a National Stan
3、dard of Canadaby the Standards Council of Canada.ISBN 1-55397-296-1 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
4、 accredited 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 t
5、he 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 i
6、ncluding 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 b
7、y 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
8、 and 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
9、 extent 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 han
10、d. 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 Standa
11、rd 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
12、 theservices 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
13、 continually 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 offi
14、ces 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 responsibili
15、ty 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 serv
16、ices 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 inte
17、nded 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 18836:04 Mammoth Tape-2 formatInformat
18、ion technology 8 mm wide magnetic tape cartridgefor information interchange Helical scan recording January 2004 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 18836:04Information technology 8 mm wide magnetic tape cartridgefor information interchange Helical scan recording MammothTape-2 formatC
19、SA 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 onInfor
20、mation 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 Co
21、nsultative 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 t
22、ime 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 mo
23、dification, 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
24、publisher. 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 18836:2001(E)ISO/IEC 2001INTERNATIONALSTANDARDISO/IEC18836First edition2001-02-15Information technology 8 mm widemagnetic tape cartridge for informationinterchange Helical scan
26、 recording MammothTape-2 formatTechnologies de linformation Cartouche de bande magntique de 8mmde large pour lchange dinformation Enregistrement par balayage enspirale Format MammothTape-2ISO/IEC 18836:2001(E)PDF disclaimerThis PDF file may contain embedded typefaces. In accordance with Adobes licen
27、sing 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 C
28、entral 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 take
29、n to 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 reproduce
30、d or 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
31、 11Fax + 41 22 749 09 47E-mail copyrightiso.chWeb www.iso.chii ISO/IEC 2001 All rights reservedISO/IEC 18836:2001(E) ISO/IEC 2001 All rights reserved iiiContentsSection 1 - General 11 Scope 12 Conformance 12.1 Magnetic tape cartridges 12.2 Generating drive 12.3 Receiving drive 13 References 14 Defin
32、itions 14.1 a.c. erase 14.2 algorithm 14.3 Average Signal Amplitude 14.4 azimuth 24.5 back surface 24.6 bit cell 24.7 byte 24.8 cartridge 24.9 Channel bit 24.10 Cyclic Redundancy Check (CRC) character 24.11 Error Correcting Code (ECC) 24.12 File Mark 24.13 Logical Beginning of Partition (LBOP) 24.14
33、 Logical Block 24.15 magnetic tape 24.16 Master Standard Reference Tape 24.17 Partition 24.18 Physical Beginning of Partition (PBOP) 24.19 Physical Beginning of Tape (PBOT) 24.20 Physical End of Partition (PEOP) 24.21 Physical End of Tape (PEOT) 24.22 physical recording density 24.23 Read Back Check
34、 (RBC) 24.24 Reference Field 24.25 Secondary Standard Reference Tape (SSRT) 24.26 Set Mark 24.27 Standard Reference Amplitude (SRA) 24.28 Standard Reference Current (Ir) 24.29 Tape Reference Edge 24.30 Test Recording Current (TRC) 24.31 Track 34.32 Typical Field 35 Conventions and Notations 35.1 Rep
35、resentation of numbers 35.2 Names 36 Acronyms 3ISO/IEC 18836:2001(E)iv ISO/IEC 2001 All rights reserved7 Environment and Safety 47.1 Testing environment 47.2 Operating environment 47.3 Storage environment 47.4 Transportation 47.5 Safety 47.6 Flammability 4Section 2 - Requirements for the case 58 Dim
36、ensional and mechanical characteristics of the case 58.1 General 58.2 Overall dimension 58.3 Holding areas 68.4 Cartridge insertion 68.5 Window 78.6 Loading grips 78.7 Label areas 78.8 Datum areas and datum holes 78.9 Support areas 88.10 Recognition holes 98.11 Write-inhibit hole 98.12 Pre-positioni
37、ng surfaces 108.13 Cartridge lid 108.14 Cartridge reel lock 118.15 Reel access holes 128.16 Interface between the reels and the drive spindles 128.17 Light path 148.18 Position of the tape in the case 148.19 Tape path zone 148.20 Tape access cavity 158.21 Tape access cavity clearance requirements 15
38、Section 3 - Requirements for the Unrecorded Tape 329 Mechanical, physical and dimensional characteristics of the tape 329.1 Materials 329.2 Tape length 329.2.1 Length of the magnetic tape 329.2.2 Length of leader and trailer tapes 329.2.3 Length of the cleaning tape 329.2.4 Length of the splicing ta
39、pe 329.3 Width 329.3.1 Width of magnetic, cleaning, leader and trailer tape 329.3.2 Width and position of the splicing tape 339.3.3 Edge weave 339.4 Discontinuities 349.5 Thickness 349.5.1 Thickness of the magnetic tape 349.5.2 Thickness of the cleaning tape 349.5.3 Thickness of leader and trailer t
40、ape 349.5.4 Thickness of the splice tape 359.6 Longitudinal curvature 359.7 Cupping 359.8 Coating adhesion 359.9 Layer-to-layer adhesion 369.10 Tensile strength 36ISO/IEC 18836:2001(E) ISO/IEC 2001 All rights reserved v9.10.1 Breaking strength 369.10.2 Yield strength 369.11 Residual elongation 369.1
41、2 Electrical resistance of the recording surface 369.13 Tape winding 379.14 Light transmittance of tape 379.15 Abrasivity 3710 Magnetic recording characteristics 3710.1 Test conditions 3710.2 Typical Field 3710.3 Signal Amplitude 3810.4 Resolution 3810.5 Signal-to-Noise Ratio 3810.6 Ease of erasure
42、3910.7 Tape quality 3910.7.1 Missing pulses 3910.7.2 Missing pulse zone 3910.7.3 Overwrite 39Section 4 - Requirements for an Interchanged Tape 4011 Track Format 4011.1 General 4011.2 Physical block format 4111.2.1 Logical Transfer Segment (LTS) 4111.2.2 Compression Unit 4211.2.3 Physical block 4311.
43、2.4 Information Matrix 5011.2.5 Recorded patterns 5111.3 Search field format 5111.3.1 Search field data 5111.3.2 Search field CRC and ECC 5311.3.3 Search field recording patterns 5311.4 Servo area 5311.5 Track layout 5312 Method of recording 5612.1 Physical Recording Density 5612.1.1 Long Term Avera
44、ge Bit Cell Length 5612.1.2 ShortTermAverageBitCellLength 5612.1.3 Rate of Change 5612.2 Bit Shift 5712.3 Amplitude of Data Signals 5713 Track geometry 5713.1 General 5713.2 Track pitch 5713.3 Average track pitch 5713.4 Track width 5713.5 Track angle 5813.6 Track length 5813.7 Guard band 5813.8 Azim
45、uth angles 5813.9 Track linearity 58ISO/IEC 18836:2001(E)vi ISO/IEC 2001 All rights reserved14 Layout of a tape 5814.1 General 5814.2 Tape History Log (THL) 5814.3 Physical Beginning of Partition 5914.4 Logical Beginning of Partition 5914.5 Data area 5914.5.1 General 5914.5.2 Short File Mark 5914.5.
46、3 Long File Mark 5914.5.4 Set Mark 5914.6 End of Data 5914.7 Physical End of Partition (PEOP) 59AnnexesA (normative) - Measurement of Light Transmittance of Tape and Leaders 60B (normative) - Tape abrasivity measurement procedure 63C (normative) - Generation of the Logical Block CRC 65D (normative)
47、- ECC3 Check Bytes 66E (normative) - Generation of the Data Area CRC 67F (normative) - Generation of the ECC 68G (normative) - Pre-coder 69H (normative) - Representation of 8-bit bytes by 10-bit patterns 70J (normative) - Randomisation 77K (normative) - Generation of the Search Field CRC 78L (normat
48、ive) - The Search Field ECC 79M (normative) - Measurement of bit shift 80N (informative) - Recommendations for transportation 82ISO/IEC 18836:2001(E) ISO/IEC 2001 All rights reserved viiForewordISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commi
49、ssion) form thespecialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in thedevelopment of International Standards through technical committees established by the respective organization to deal withparticular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Otherinternational organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work.International S
