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 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 not be edited unless the typefaces which are embedded are licensed
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9、ermission 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 Web www.iso.org Published in Switzerland ii ISO/IEC 2003 All righ
10、ts 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. erase 24.3 Access 24.4 algorithm 24.5
11、 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 (ECC) 34.18 flux transition position 3
12、4.19 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 of Tape (PBOT) 34.28 Physical End of Ta
13、pe (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 44.38 Secondary Standard Reference Tape
14、 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 54.46 unprocessed data 54.47 Unprocessed
15、 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 - Requirements for the case 68 Dimensional and m
16、echanical 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-inhibit hole 118.12 Pre-positioning surfaces
17、 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 cavity clearance 178.22 Requirements for th
18、e 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 of magnetic tape 389.2.2 Length of leade
19、r 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 399.5.2 Thickness of the leader and trailer
20、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 resistance of the recording surface 409.
21、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 pulses 4310.6.2 Missing pulse zone 4310
22、.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-Group 5011.3.2 G2 Sub-Group - Randomiz
23、ing 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 bit cell length 6212.4 Rate of change 6
24、2ISO/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 6313.5 Track angle 6313.6 Track edge s
25、traightness 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 6616.1 Device Area 6616.2 Reference Area
26、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 Group 7216.5.3 ECC3 7316.5.4 Multiple Rec
27、orded 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 Initialization 7717 Housekeeping Frames
28、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 Mechani
29、sm 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 Heap Management 8518.3.1 Cell 8518.3.2 Cell Header 8518.3.3 Partition Information Cell 8718.3.4 Physical Tape Directory In
30、formation 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 9018.3.9 Media Identification Information Cell 9118.3.10 Tape Alert Information Cell 9118.4 Electrical interface 9218.5 En
31、vironment 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 Message from AIT RMIC to AIT RMIC reader-writer 9318.8.1 Load modulation 9418.9 EDC 9518.10 AIT RMIC states 9518.11 Command a
32、nd 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 Response 9818.11.5 Write Command and Response 9818.11.6 Status Command and Response 9818.11.7 Reset Command and Response 991
33、8.12 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 105B (normative) - Measurement of Signal-to-Noise Ratio 108C (normative) - Method for determining the nominal and the ma
34、ximum allowable recorded levels(pre-recording condition) 109D (normative) - Representation of 16-bit words by 18-Channel bits patterns 110E (normative) - Measurement of bit shift 111F (normative) - Method of measuring the straightness of track edges 113G (normative) - ECC calculation 114H (informati
35、ve) - Recommendations for transportation 117J (informative) - Read-After-Write 118ISO/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
36、 G2 Sub-Groups 121ISO/IEC 23651:2003(E) ISO/IEC 2003 All rights reserved ixForewordISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IE
37、C 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 technical committees collaborate in fields of mutual interest. Other international organizations, gove
38、rnmental 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, P
39、art 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the nationa
40、l 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 Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC. Information technology 8 mm wide mag
41、netic tape cartridge for informationinterchange Helical scan recording AIT-3 format ISO/IEC 2003 All 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 phy
42、sical interchange of such cartridges between drives. It also specifies the quality of therecorded signals, 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.
43、This International Standard specifies two types of cartridge depending on the thickness of the magnetic 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 s
44、tructure and labelling of the information on the interchanged cartridge.2 Conformance2.1 Magnetic tape cartridgeA tape cartridge shall be in conformance with this International Standard if it meets all the mandatory requirements specifiedherein. The tape requirements shall be satisfied throughout th
45、e extent of the tape.2.2 Generating driveA drive generating a magnetic tape cartridge for interchange shall be in conformance with this International Standard if allrecordings on the tape meet the mandatory requirements of this International Standard, and if either one or both methods ofappending an
46、d overwriting are implemented. In addition, such a drive shall be able to record the System Log in the AITRemote Memory In Cartridge (AIT RMIC).A claim of conformance shall state which of the following optional features are implemented and which are not the performing of a Read-After-Write check and
47、 the recording of any necessary repeated frames; the generation of ECC3 Frames.In addition a claim of conformance shall state whether or not one, or more, registered algorithm(s) are implemented within the system and are able to compress datareceived from the host prior to collecting the data into B
48、asic Groups, and the registered identification number(s) of the implemented compression algorithm(s).2.3 Receiving driveA drive receiving a magnetic tape cartridge for interchange shall be in conformance with this International Standard if it is ableto handle any recording made on the tape according
49、 to this International Standard. In particular it shall be able to read the System Log recorded in the AIT RMIC; be able to recognise repeated frames, and to make available to the host, data and Separator Marks from only one of theseframes; be able to recognise multiple representations of the same Basic Group, and to make available to the host, data andSeparator Marks from only one of these representations; be able to recognise an ECC3 frame, and ignore it if the system is not capable of using ECC3 check bytes in a process
