1、Adopted by INCITS (InterNational Committee for Information Technology Standards) as an American National Standard.Date of ANSI Approval: 12/24/2003Published by American National Standards Institute,25 West 43rd Street, New York, New York 10036Copyright 2003 by Information Technology Industry Council
2、 (ITI).All rights reserved.These materials are subject to copyright claims of International Standardization Organization (ISO), InternationalElectrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council(ITI). Not for resale. No part of t
3、his publication may be reproduced in any form, including an electronic retrieval system, withoutthe prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaReference numberISO
4、/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 linformation Cartouche de bande magntique de 8 mm de large pour change dinf
5、ormations Enregistrement par balayage en spirale Format AIT-3 Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 23651:2003(E) PDF disclaimer This PDF file may contain embed
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9、pecified, 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 the country of the requester. ISO copyright offic
10、e Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2003 All rights reservedCopyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or
11、 networking permitted without license from IHS-,-,-ISO/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.
12、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 34.13 Codeword 34.14 Early Warning Point (EWP) 34.15 End of Data (EOD) 34.16 Entity 34.17 Error Correcting Cod
13、e (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
14、 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
15、 44.38 Secondary Standard Reference Tape 4Section 1 - General 1Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 23651:2003(E)iv ISO/IEC 2003 All rights reserved4.39 Separa
16、tor 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 54.46 unprocessed data 54.47 Unprocessed Record 55 Conventions and Notations 55.1 Representation of numbers 55.2 Names 56 Acronyms
17、 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 - Requirements for the case 68 Dimensional and mechanical characteristics of the case 68.1 General 68.2 Overall dimension 78.3 Holding are
18、as 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-inhibit hole 118.12 Pre-positioning surfaces 128.13 Cartridge lid 128.14 Cartridge reel lock 138.15 Reel access holes 148.16 Interface
19、 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 cavity clearance 178.22 Requirements for the RMIC 178.23 Recognition recesses 18Section 3 - Requirements for the unrecorded tape 389
20、Mechanical, physical and dimensional characteristics of the tape 389.1 Materials 389.2 Tape length 38Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 23651:2003(E) ISO/IEC
21、 2003 All rights reserved v9.2.1 Length of 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
22、.5.1 Thickness of the 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 409.1
23、1 Residual elongation 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 4310.4 Overwrite 4310.5 Ease of eras
24、ure 4310.6 Tape quality 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 Tabl
25、e (BAT) 4811.3 Sub-Groups 5011.3.1 G1 Sub-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 b
26、it cell length 6212.3 Short-term average bit cell length 6212.4 Rate of change 62Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 23651:2003(E)vi ISO/IEC 2003 All rights r
27、eserved12.5 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 6313.5 Track angle 6313.6 Track edge straightness 6313.7 Track length 6313.8 Azimuth ang
28、les 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 6616.1 Device Area 6616.2 Reference Area 6716.3 Position Tolerance Band No. 1 6716.4 System
29、 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 Group 7216.5.3 ECC3 7316.5.4 Multiple Recorded Instances 7416.5.5 Repeated Frames 7416.5.6
30、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 Initialization 7717 Housekeeping Frames 7817.1 Amble Frames 7817.2 System Amble Frames 781
31、8 AIT Remote Memory In Cartridge (AIT RMIC) 7818.1 General 7818.2 Content of the AIT RMIC 7818.2.1 Manufacturers Information Section 79Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS
32、-,-,-ISO/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 Memory He
33、ap Management 8518.3.1 Cell 8518.3.2 Cell Header 8518.3.3 Partition Information Cell 8718.3.4 Physical Tape Directory Information Cell 8718.3.5 User Volume Information Cell 8818.3.6 User Partition Information Cell 8818.3.7 Application Information Cell 8918.3.8 Date and Time Stamp Information Cell 90
34、18.3.9 Media Identification Information Cell 9118.3.10 Tape Alert Information Cell 9118.4 Electrical interface 9218.5 Environment 9218.5.1 Electromagnetic Compatibility 9218.5.2 Magnetic fields 9218.5.3 X-rays 9218.6 Operating Field 9218.7 Message from AIT RMIC reader-writer to AIT RMIC 9218.8 Messa
35、ge from AIT RMIC to AIT RMIC reader-writer 9318.8.1 Load modulation 9418.9 EDC 9518.10 AIT RMIC states 9518.11 Command and Response 9618.11.1 Attention Command and Response 9718.11.2 Attention Command and Response Type 1 9718.11.3 Attention Command and Response Type 2 9718.11.4 Read Command and Resp
36、onse 9818.11.5 Write Command and Response 9818.11.6 Status Command and Response 9818.11.7 Reset Command and Response 9918.12 Dialogue 9918.12.1 Read data from AIT RMIC 9918.12.2 WritedatatoAITRMIC 10018.12.3 Read and Write with Session ID 101AnnexesA (normative) - Measurement of light transmittance
37、105B (normative) - Measurement of Signal-to-Noise Ratio 108C (normative) - Method for determining the nominal and the maximum allowable recorded levels(pre-recording condition) 109D (normative) - Representation of 16-bit words by 18-Channel bits patterns 110E (normative) - Measurement of bit shift 1
38、11F (normative) - Method of measuring the straightness of track edges 113G (normative) - ECC calculation 114H (informative) - Recommendations for transportation 117J (informative) - Read-After-Write 118Copyright American National Standards Institute Provided by IHS under license with ANSINot for Res
39、aleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 23651:2003(E)viii ISO/IEC 2003 All rights reservedK (informative) - Basic Group No. 0 119L (informative) - Chip for the AIT-3 format 120M (informative) - Generation of EDC bytes for the Error Detecting Code for G2 Sub-Gr
40、oups 121Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO/IEC 23651:2003(E) ISO/IEC 2003 All rights reserved ixForewordISO (the International Organization for Standardization)
41、and IEC (the International Electrotechnical Commission) form 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
42、with particular fields of technical activity. ISO and IEC 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
43、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 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the jo
44、int technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. ISO/IEC 23651 was prepared by ECMA (as ECMA-329) and was adopted, under a special “fast-track procedure”, by Joint
45、Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC. Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyri
46、ght American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Information technology 8 mm wide magnetic tape cartridge for informationinterchange Helical scan recording AIT-3 format ISO/IEC 2003 All
47、 rights reserved 1Section 1 - General1ScopeThis International Standard specifies the physical and magnetic characteristics of an 8 mm wide magnetic tape cartridgecontaining a memory chip to enable physical interchange of such cartridges between drives. It also specifies the quality of therecorded si
48、gnals, the recording method and the recorded format - called Advanced Intelligent Tape No. 3 (AIT-3 format) -thereby allowing data interchange between drives by means of such magnetic tape cartridges.This International Standard specifies two types of cartridge depending on the thickness of the magne
49、tic tape contained in thecase.Information interchange between systems also requires, at a minimum, agreement between the interchange parties upon theinterchange code(s) and the specifications of the structure and labelling of the information on the interchanged cartridge.2 Conformance2.1 Magnetic tape cartridgeA tape cartrid
