1、ANSI INCITS 46-1974 (R2002)(formerly ANSI X3.46-1974 (R2000)Unrecorded Magnetic Six-Disk Pack(General, Physical, andMagnetic Requirements)Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from
2、IHS-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI X3.46-l 974 American National Standard Unrecorded Magnetic Six-Disk Pack (General, Physical, and Magnetic Characteris
3、tics) Secretariat Computer and Business Equipment Manufacturers Association Approved May 14,1974 American National Standards institute, Inc Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license fro
4、m IHS-,-,-AmericanNationalStandardApproval of an American National Standard requires review by ANSI that therequirements for due process, consensus, and other criteria for approval havebeen met by the standards developer.Consensus is established when, in the judgment of the ANSI Board of StandardsRe
5、view, substantial agreement has been reached by directly and materiallyaffected interests. Substantial agreement means much more than a simplemajority, but not necessarily unanimity. Consensus requires that all views andobjections be considered, and that a concerted effort be made toward theirresolu
6、tion.The use of American National Standards is completely voluntary; their existencedoes not in any respect preclude anyone, whether he has approved the standardsor not, from manufacturing, marketing, purchasing, or using products, processes,or procedures not conforming to the standards.The American
7、 National Standards Institute does not develop standards and will inno circumstances give an interpretation of any American National Standard.Moreover, no person shall have the right or authority to issue an interpretation ofan American National Standard in the name of the American National Standard
8、sInstitute. Requests for interpretations should be addressed to the secretariat orsponsor whose name appears on the title page of this standard.CAUTION NOTICE: This American National Standard may be revised orwithdrawn at any time. The procedures of the American National StandardsInstitute require t
9、hat action be taken periodically to reaffirm, revise, or withdrawthis standard. Purchasers of American National Standards may receive currentinformation on all standards by calling or writing the American National StandardsInstitute.Published byAmerican National Standards Institute11 West 42nd Stree
10、t, New York, New York 10036Copyright 1974 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,without prior written permission of ITI, 1250 Eye Street NW,Washington, DC 20005.Prin
11、ted in the United States of AmericaCopyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Foreword (This Foreword is not a part of American National Standard Unrecorded Magnetic Six-Dis
12、k Pack (General, Physical, and Magnetic Characteristics), X3.46-1974.) This standard presents the general, physical, and magnetic requirements for interchangeability of the magnetic six-disk pack as required to achieve unrecorded pack interchange between disk storage drives and associated informatio
13、n processing systems. Subsequent standards may specify other disk packs with different storage and performance capabilities, and define more fully the parameters relevant to support data interchange on such media. Subcommittee X3B7, which developed this standard, consists of a group of experienced a
14、nd qualified specialists on the disk pack and the associated disk storage drives. In the development of this standard careful consideration was given to current practices, existing equipment, and applicable standards being developed internationally. This standard was approved as an American National
15、 Standard by the American National Stan- dards Institute on May 14, 1974. Suggestions for improvement of this standard will be welcome. They should be sent to the American National Standards Institute, 1430 Broadway, New York, N.Y. 10018. This standard was processed and approved for submittal to ANS
16、I by American National Stan- dards Committee on Computers and Information Processing, X3. Committee approval of the standard does not necessarily imply that all committee members voted for its approval. At the time it approved this standard, the X3 Committee had the following members: J. F. Auwaerte
17、r, Chairman V. E. Henriqu,es, Vice-Chairman R. M. Brown, Secretary Organization Represented Name of Representative Addressograph Multigraph Corporation . . . . . . . . . . . . . . . . . . . . . . . . . . _ . . . . . . . A. C. Brown D. S. Bates (Alt) Air Transport Association. . . . . . . . . . . . .
18、 . . . . . _ . . . . . . . . . . . . . . . . . . . . . . . . . . . F. C. White American Bankers Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M. E. McMahon J. Booth (Alt) American Institute of Certified Public Accountants . . . . . . . . . . . . . .
19、. . . . . . . . _ . . . N. Zakin P. B. Goodstat (Alt) C. A. Phillips (Alt) F. Schiff (Ah) American Library Association. . . . . . . . _ . . . . . . . . _ . . . . . . . . . . . . . . . . . . . . . . . . . J. R. Rizzolo J. C. Kountz (Alt) M. S. Malinconico (Alt) American Newspaper Publishers Associati
20、on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W. D. Rinehart American Nuclear Society . . . _ . . . _ . . . . . . . . . . . _ . . . . . . . . . . . . . . . . . , . . . . . _ . D. R. Vondy M. K. Butler (Ah) American Society of Mechanical Engineers . . . . . . . . . . . . . . . . .
21、. . . . . . . . . . . . . . . R. W. Rau R. T. Woythal (Alt) Association for Computing Machinery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. Skelly J. A. N. Lee (Ah) L. Revens (Alt) H. Thiess (Alt) Association for Educational Data Systems . . . . . . . . . . . . . . . .
22、 . . . . . . . . . . . . . . . . . C. Wilkes Association for Systems Managenient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. H. Vaughan Association of American Railroads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ . _ . . . . R. A. Petrash Associati
23、on of Computer Programmers and Analysts . . . . . . . . . . . . . . . . . . . . . . . . . T. G. Grieb G. Thomas (Alt) Association of Data Processing Service Organizations . . . . . . . . . . . . . . . . . . . . . . . . . J. B. Christiansen Burroughs Corporation. . . . . . . . . . . . . _ . . . . . .
24、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. Lohse J. F. Kalbach (Alt) Control Data Corporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. F. Buckland C. E. Cooper (Alt) Data Processing Management Association . . . . . . . _ . . . . .
25、. . . _ . . . . . . . . . . . . . . . . A. E. Dubnow D. W. Sanford (Alt) Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Organization Represerlred Name of Representative Edison E
26、lectric Institute . . . . . . . . . . . . _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R. Bushner J. P. Markey (Ah) Electronic Industries Association . . . . . . . . . . . . . . . . . . . . . _ . . . . . . . . . . . . . . . . . . (Representation Vacant) A. M. Wilson (Alt) General
27、Electric Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R. R Hench J. K. Snell (Alt) General Services Administration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D. L. Shoemaker M. W. Burris (Alt) GUIDE Internatio
28、nal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T. E. Wiese D. Stanford (Alt) Honeywell Information Systems Inc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T. J. McNamara E. H. Clamons (Ah) Institute of Electrical and El
29、ectronics Engineers, Communications Society . . . . . . . . R. Gibbs Institute of Electrical and Electronics Engineers, Computer Society . . . . . . . . . . . . . G. C. Schutz C. W. Rosenthal (Ah) Insurance Accounting and Statistical Association . . . . . . . . . . . . . . . . . . . . . . . . . . .
30、. W. Bregartner J. R. Kerber (Alt) International Business Machines Corporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L. Robinson W. F. McClelland (Alt) Joint Users Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ . . . . . . . T. E.
31、Wiese L. Rodgers (Alt) Life Office Management Association _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B. L. Neff A. J. Tufts (Ah) Litton Industries . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . _ . . . . . . . . . . I. Danowitz National A
32、ssociation of State Information Systems . . . . . . . . . . . . . . . . . . . . . . . . . . G. H. Roehm G. Vorlander (Alt) National Bureau of Standards. . . . . . . . . . . . . . . . . . . . . . . . . . _ . . . . . . . . . . . . . . . . H. S. White, Jr J. 0. Harrison (Ah) National Cash Register Comp
33、any . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ . . . _ . . . _ . R. J. Mindlin T. W. Kern (Alt) National Machine Tool Builders Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. A. Rodriques E. J. Loeffler (Alt) National Retail Merchants Association . . .
34、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I. Solomon Olivetti Corporation of America. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. J. Ahnquist Pitney-Bowesinc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35、. . . . . . . . . . . D.J.Reyen B. Lyman (Alt) Printing Industries of America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. Scharpf E. Masten (Alt) Scientific Apparatus Makers Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A.
36、Savitsky J. French (Alt) SHARE Inc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T. B. Steel, Jr R. H. Wahlen (Ah) Society of Certified Data Processors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Ta
37、ylor J. J. Martin (Alt) TelephoneGroup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V.N.Vaughan.Jr S. M. Garland (Ah) J. C. Nelson (Alt) UNIVAC, Division of Sperry Rand Corporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M. W.
38、Bass C. D. Card (Ah) U.S. Department of Defense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W. L. McGreer W. B. Rinehuls (Alt) W. B. Robertson (Alt) Xerox Corporation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39、 . . . . J. L. Wheeler Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Subcommittee X3B7 on Magnetic Disks, which developed this standard, had the following members: P. S. Johnso
40、n, Chairman J. Eastman, Vice-Chairman S. F. Buckland, Former Chairman R. C. Abbe F. H. Appel J. R Barnes L. H. Blenderman D. L Bourget w. W. Carlson R. Daniero W. Davies G. A. Fencl A F. Godefroy P. N. Green W. A. Grubbs M. F. Hanley H. Hemdal N. Jividen F. X. Kanamuller N. S Kenny W. Lore R. J. Pen
41、ny R. C. Pricer C. A Saucier G. Schmid J. C. Scott J. 0, Shannon P. D. Shupe D. A. Sutton L. Tidball D. F. Tomisak I. E. Walenta R. D. Weiss L. J. Dora Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without
42、 license from IHS-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Contents SECTION PAGE 1. Scope 9 3,. General Requirements 9 2.1 Operation, Storage, and Test Environment 9 2
43、.2 Environmental Stability 9 2.3 Materials 9 1.4 Disk Pack Assembly . 9 3. PhysicalRequirementsl 3.1 Dimensions . 12 3.3 Moment of Inertia . - . 17 3.3 Balance . 17 3.4 MaximumSpeed 17 3.5 LockingPull . 17 3.6 Air Feed Openings .I7 3.7 AirFilter 17 3.8 Airflow 17 3.9 Thermal Time Constant 17 3.10 El
44、ectrical Ground . I7 3.11 Physical Characteristics of Magnetic Surfaces 17 3.12 ShockandVibration.2 0 3.13 Maximum Weight . 24 4. Magnetic Requirements . 24 4.1 Surface and Head Identification 24 4.2 SurfaceGeometry.2 4 4.3 TrackGeometry 25 4.4 Reference Standards . 29 4.5 TestConditions 3 0 4.6 Sur
45、face Tests 33 4.7 Track Quality Tests . 33 4.8 Rejection Criteria .33 Tables Table 1 Test Conditions for Shock Tests of Disk Pack and Cover Assembly. . 23 Table 2 Track Locations for Ten-Surface Disk Packs . .26-29 Figures Fig. 1 Disk Pack without Covers, Partially in Vertical Cross Section 10 Fig.
46、2 Disk Pack with Top and Bottom Cover, Partially in Vertical Cross Section 11 Fig. 3 Simplified Cross Section of the Hub . 12 Fig. 4 Sector Disk (Top View) . 14 Fig. 5 Enlarged, Partial, and Simplified Cross Section of the Disk Pack 15 Fig. 6 Airflow Test Configuration 18 Fig.7 AdhesionTest 19 Fig.
47、8 Abrasive Wear Resistance Test. . 21 Fig. 9 Abrasive Wear Resistance Test Calibration Curve. . 22 Fig. 10 Disk Rotation, Disk Surface, and Head Designation . 24 Fig. 11 HeadTrackRadiusandHeadSkewAngle . 25 Fig.12 TrackIndex3 0 Fig. 13 Geometry of Head/Disk System 31 Fig. 14 Read/Write Circuits and
48、Write-Current Waveform . 32 Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SECTION 1 PAGE Appendix Suggested Measurement Techniques . . . . . . . . . . . . . . . . . . . . . . .
49、 . . . . . . . . . . . . 34 Al. Introduction 34 AZ!. Measurement34 Figures Fig. Al Dynamic Disk Surface Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . : . . . . . 35 Fig. A2 Disk Surface Displacement, Velocity, and Acceleration Data . . . . . . . . . . . . . . . . 36 Fig. A3 Schematic Diagram for Deriving Acceleration from Disk Surface Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
