ANSI INCITS 85-1981 1 2-Inch Magnetic Tape Interchange Using a Self-Loading Cartridge.pdf

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1、ANSI INCITS 85-1981 (R2003)(formerly ANSI X3.85-1981 (R1998)for l/2-inch Magnetic Tape InterchangeUsing a Self-Loading CartridgeANSI X3.85-1981 American National Standard for $-Inch Magnetic Tape Interchange Using a Self-Loading Cartridge Secretariat Computer and Business Equipment Manufacturers Ass

2、ociation Approved June 29,198l American National Standards Institute, Inc 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 es

3、tablished when, in the judgment of the ANSI Board of StandardsReview, 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 co

4、nsidered, and that a concerted effort be made toward theirresolution.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, proc

5、esses,or procedures not conforming to the standards.The American 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

6、 National Standard in the name of the American National StandardsInstitute. 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

7、procedures of the American National StandardsInstitute require that 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.Pub

8、lished byAmerican National Standards Institute11 West 42nd Street, New York, New York 10036Copyright 1981 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

9、 permission of ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaForeword (This Foreword is not a part of American National Standard for l/2-Inch Magnetic Tape Interchange Using a Self-Loading Cartridge, ANSI X3 85-1981.) This standard presents the requirements and

10、test methods necessary to ensure physical inter- change of a self-loading cartridge to be used with l/2-inch-wide magnetic tape as described in American National Standard for Unrecorded Magnetic Tape for Information Interchange (9- Track 200 and 800 CPI, NRZI, and 1600 CPI, PE), ANSI X3.40-1 976, an

11、d modified herein, when contained in a self-loading cartridge. Subcommittee X3Bl on Magnetic Tape, which developed this standard, consists of a number of experienced and qualified specialists on recording of digital information on magnetic tape. In the development of this standard, careful considera

12、tion was given to current practices, ex- isting equipment and supplies, and the broadest possible acceptance, and to providing a basis for future improvement in the use of the medium. Suggestions for improvement of this standard will be welcome. They should be sent to the American National Standards

13、 Institute, Inc, 1430 Broadway, New York, N.Y. 10018. This standard was processed and approved for submittal to ANSI by American National Stan- dards Committee on Information Processing, X3. Committee approval of the standard does not necessarily imply that all committee members voted for its approv

14、al. At the time it approved this standard, the X3 Committee had the following members: John F. Auwaerter, Chairman J. P. Ancona and J. A. N. Lee, Co-Vice-Chairmen Catherine A. Kachurik, Administrative Secretary Organization Represented AM International . American Nuclear Society American Society for

15、 Information Science Association of American Railroads. Association of Computer Users . Association for Computing Machinery . Association of Data Processing Service Organizations Association for Systems Management . Burroughs Corporation. . Computer and Communications Industry Association Control Da

16、ta Corporation Data General Corporation Data Processing Management Association . Digital Equipment Computer Users Society Digital Equipment Corporation . Edison Electric Institute . General Services Administration GUIDE International. Harris Corporation Hewlett Packard. . Honeywell Information Syste

17、ms . : : : : IEEE Communications Society. : : : 1 Name of Representative Joanne Gerg Ace McInturff (Alt) Geraldine C. Main D. R. Vondy (AR) Charles Goldstein R. A. Petrash Hillel Segal Thomas Kurihara (AR) J. A. N. Lee Pat Skelly (AR) Bruce R. Wilson Wallace R. McPherson, Jr Richard Irwin (Alt) Jerr

18、old S. Foley Michael J. Bedford (AR) Norman J. Ream A. G. W. Biddle (Alt) Charies E. Cooper Keith Lucke (Alt) Anthony M. GoschaIk Jit Saxena (AR) Ardyn E. Dubnow Steve Jost (AR) John R. Barr Patricia Caroom (AR) Patricia W. White Howard Kaikow (AR) S. P. Shrivastava William C. Rinehuls Donald J. Pag

19、e (Alt) Frank Kirshenbaum Leland Milligan (AR) Richard Joyce Ed Younker (Alt) Donald C. Loughry Thomas J. McNamara Thomas A. Varetoni Organization Represented IEEE Computer Society International Business Machines Corporation . Lawrence Berkeley Laboratory . Life Office Management Association Nationa

20、l Communications System . National Micrographics Association. NCR Corporation . OCLC.Inc . OCR Users Association. . Perkin-Elmer Corporation Prime Computer. . Printing Industries of America. . Recognition Equipment, Inc. SHARE.Inc Society of Certified Data Processors Sperry Univac. Telephone Group.

21、3MCompany U.S. Department of Commerce, National Bureau of Standards . U.S. Department of Defense. U.S. Department of Health and Human Services . VIM . Wang Laboratories, Inc. . Xerox Corporation Name of Representative Herbert Hecht William F . McClelland Caryl A. Thorn (Ah) James A. Baker D. F. Stev

22、ens (Ah) Richard E. Ricketts James F. Foley, Jr (Alt) Marshall L. Cain George W. White Robert Glotfelty William E. Neale (Alt) Thomas W. Kern A. Raymond Daniels (Alt) David Colombo David Penniman (Ah) Herbert F. Schantz David Ellis Abraham Sevitsky (Alt) Winfried Burke Charles Tinkey (Alt) Norman Sc

23、harpf Michael Nolan (Alt) William E. Viering Thomas B. Steel, Jr Daniel Schuster (Alt) Thomas M. Kurihara Ardyn E. Dubnow (Alt) Marvin W. Bass Charles D. Card (Alt) V. N. Vaughan, Jr S. M. Garland (Alt) R. M. Shaw (Alt) R. C. Smith Robert E. Rountree James H. Burrows (Alt) William LaPlant Beth Weinb

24、erger Walter Frederic (Ah) Waldo M. Wedel Carl W. Schwartz Charles McComas (Alt) John L. Wheeler Arthur R. Machell (Alt) Subcommittee X3B1, which developed this standard, had the following members: Joseph S. Zajaczkowski, Chairman Michael Lohrenz, Secretary Michael Hogan, International Representativ

25、e Henry Adalr Arthur Anderson R. Bartholomew Wilham A. Bemett Joseph Bullock Sam D. Cheatharn A. Ching Michael Deese Howard Dirkson Joseph Dudkowski G. 0. Dunklee Donald S. Elderson Art Evans J. Fiori John J. Fleming Sidney B . Geller John Gough Haken Hemdal C. Edmond Holler Kyriacos Joannou Melvin

26、R. Kaiser George Klechefski T. C. Lambert Noel A. Leifer Robert McKenna Michael A. Marchese W. P. Mealey Jeff Menkes D. G. Osborn A. Patti110 M. Richard Pembroke William B. Poland, Jr Joseph Pomian D. 0. Rasmussen Clyde Roberts Arnold J. Roccati Principle H. Sallet A. Saratora Herbert F. Schantz Jim

27、 Sexton A. Sheehan Dave Sheppard Richard Silva James Smith Gene Sovereign Richard T. Steinbrenner H. J. Tait V. L. Thompson Robert S. Wooldridge Walter Wuensch Contents SECT1oN PAGE 1. Scope and Purpose . 6 2. Materials 6 3. Operation, Storage, and Test Environment. . 6 4. Dimensions 6 5. AirFlow 6

28、5.1 Definition 6 5.2 Requirements. . 7 5.3 Machine Test Procedure . 7 5.4 Cartridge Test Procedure 7 6. Latch Operation Torque. . 7 7. Leader Configurations. . 7 Figures Fig. 1 Self-Loading Cartridge/Transport Interface . 8 Fig. 2 Machine Orifice Air Flow 10 Fig. 3 Test Setup . 11 Fig. 4 Examples of

29、 Tape Leader Configurations for Use with Self-Loading Cartridge . 12 American National Standard for 1/24nch Magnetic Tape Interchange Using a Self-Loading Cartridge 1. Scope and Purpose 1 .l This standard provides the information necessary to allow physical interchange of a self-loading cartridge to

30、 be used with l/2-inch-wide magnetic tape, as de- scribed in American National Standard for Unrecorded Magnetic Tape for Information Interchange (9-Track 200 and 800 CPI, NRZI, and 1600 CPI, PE), ANSI X3.40-1 976, and modified herein, when contained in a self-loading cartridge. 1.2 This standard def

31、ines the requirements and sup- porting test methods necessary to ensure interchange at acceptable performance levels. It is distinct from a specification in that it delineates a minimum of restric- tions consistent with compatibility in interchange transactions. 1.3 The performance levels contained

32、in this standard represent the minimum acceptable levels of perfor- mance for interchange purposes. They therefore repre- sent the performance levels that the interchanged items should meet or surpass during their useful life and thus define end-of-life criteria for interchange purposes. The perform

33、ance levels set forth in this standard are not in- tended to be employed as substitutes for purchase specifications. 1.4 Wherever feasible, quantitative performance levels that shall be met or exceeded in order to comply with this standard are given. In all cases, including those in which quantitati

34、ve limits for requirements falling within the scope of this standard are not stated but are left to agreement between interchange parties, standard test methods and measurement procedures shall be used to determine such limits. 1.5 U.S. customary units are the original dimensions in this standard. C

35、onversions of toleranced dimensions from U.S. customary units (similar to British imperial units) to SI units have been incorporated in this stan- dard according to Method A as described in American National Standard for Metric Practice, ANSI 2210.1. 1976, and IS0 370-1975, Toleranced Dimensions - C

36、onversion from Inches into Millimeters and Vice Versa. Method A should be used to achieve economy unless a requirement for absolute assurance of fit justi- fies use of Method B. In the national standards of IS0 member bodies, additional rounding may be done to produce “preferred” values. These value

37、s should lie within or close to the original tolerance. 1.6 Except as indicated in 1.4, interchange parties complying with the applicable standards should be able to achieve compatibility without need for additional exchange of technical information. 2. Materials The cartridge shall not use flammabl

38、e materials. Flam- mable materials are those which will ignite with a match flame and, when so ignited, will continue to burn in a still carbon dioxide atmosphere. 3. Operation, Storage, and Test Environment The operation, storage, and test environment for the tape and cartridge shall comply with th

39、e operation, storage, and test environment of the tape as specified in ANSI X3.40-t 976. 4. Dimensions The dimensions shall be as given in Fig. 1. In the open position, the cartridge shall be expanded so that the reel is free to rotate inside the collar with- out touching it. 5. Air Flow 5.1 Definit

40、ion. Air flow refers to that flow of air which, when applied to the air intake area, will be capable of detaching the free end of the tape from the tape pack 6 and, in combination with the rotating action of the reel, leading the tape end through the tape exit. Air flow is determined from air pressu

41、re and pneumatic impedances. 5.2 Requirements 5.2.1 Pneumatic Impedance. To determine the pneumatic characteristics described in 5.2.2 and 5.2.3, four orifices shall be used as defined in Fig. 2 and 3. The pneumatic impedance, 2, of an orifice is defined as: Z = constant/diameter 5.2.2 Machine Requi

42、rements. The machine shall be capable of providing air pressures between 18.0 and 32.0 inches of water (4.48 and 7.97 kPa) when restricted with pneumatic impedances equal to or less than that of orifice Z3 and equal to or greater than that of Zz (see Fig. 3). 5.2.3 Cartridge Requirements. The cartri

43、dge shall have a pneumatic impedance equal to or less than that of orifice 2s and equal to or greater than that of Za (see Fig. 3) when tested in the open position and at an air pressure which lies between 18.0 and 32.0 inches of water (4.48 and 7.97 kPa). 5.3 Machine Test Procedure. The air injecti

44、on port of the machine shall be restricted with Zz and Za alter- nately and the back pressure measured upstream of the test orifices. The pressure shall be as specified in 5.2.2. 5.4 Cartridge Test Procedure 5.4.1 Test Setup. Testing for pneumatic impedances over a specified pressure range shall be

45、done by supply- ing a constant pressure, P, to a futed upstream orifice (Z,) and measuring the pressure across the variable downstream impedance, similar to a voltage divider network. The setup for carrying out such a test shall be as shown in Fig. 3. All readings shall be made using gages capable o

46、f an accuracy of at least 1% of full scale (see Fig. 3). P, shall be established as follows. (1) Install Z4 and adjust the pressure regulator until P4 = 24.0 + 0.5 inches of water (5.98 f 0.12 kPa) to establish P, . (2) Install Zz and note P, adjusting the pressure regulator to maintain P, at the va

47、lue established in (1). (3) Install 2s and note P3, adjusting the pressure regulator to maintain P, at the value established in (1). 5.4.2 Test Procedure. A cartridge shall be installed on the apparatus, the pressure regulator adjusted to maintain P, (from 5.4.1(l), and PC read to determine complian

48、ce with 5.2.3, namely, PfP,PZ. 6. Latch Operation Torque 6.1 Definition. The operating torque is the torque re- quired to fully open and close the cartridge, including torque required to overcome the detent resistance. 6.2 Requirement. The operating torque shall be 36 in*ozf (254 mN*m) maximum. 6.3

49、Procedure. A pin approximately 0.125-inch (3.18- mm) in diameter shall be rotated through the specified arc for the latch; the cartridge shall not require more than the specified torque to open and seat or close the cartridge. The machine shall furnish more than 36 in*ozf (254 mN*m) of torque for opening and closing the cartridge. 7. Leader Configurations Leader configurations shall have dimensions as shown in Fig. 4. 7 AMERICAN NATIONAL STANDARD X3.85-1981 ROTATED 60 CCW ROTATED Sd CCW SECTION A- A SECTION A-A SCALE 2:l AN SECTION B-8 ROTATED 22 CW SECTION H-H 06P K?+J SCALE 4:1 ,