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1、Recognized as an American National Standard (ANSI) The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street, New York, NY 10017-2394, USA Copyright 1997 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 1997. Printed in the United S
2、tates of America. ISBN 1-55937-896-7 No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. IEEE Std 1301.4-1996 (R2008) IEEE Standard for Metric Equipment Practice for Microcomputers Coordinat
3、ion Document for Mezzanine Cards Sponsor Bus Architecture Standards Committee of the IEEE Computer Society Reaffirmed 31 January 2008 Approved 10 December1996 IEEE-SA Standards Board Reaffirmed 29 October 2002 Approved 15 May 1997 American National Standards Institute Abstract: This standard establi
4、shes the metric modular order and coordination dimensions for mezzanine cards for use on host modules. Keywords: front panel, host module, metric, mezzanine, module Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/111
5、1111001, User=Japan, IHS Not for Resale, 07/30/2008 01:43:55 MDTNo reproduction or networking permitted without license from IHS -,-,- ii IEEE Standards documents are developed within the Technical Committees of the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Board
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17、for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:
18、43:55 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Introduction (This introduction is not part of IEEE Std 1301.4, IEEE Standard for a Metric Equipment Practice for MicrocomputersCoordination Document for Mezzanine Cards.) This generic standard has been developed as
19、a follow-on to IEEE Std 1301-1991. This standard was developed in response to the recognition of the need for a small form factor board to be applied to a host module, with the ability to support multiple functionality. Initially it was assumed that this need would be driven entirely by desktop usag
20、e. However, as this standard was developed, it became obvious that desktop applications were only part of the potential system architectures. These small form factor units, or mezzanine cards, would also see usage on other host modules, such as in industrial application of subrack plug-in units. Thi
21、s standard will add to the modular order, initiated by IEEE Std 1301-1991, the concept of a standardized mezzanine card with the appropriate dimensions and features defined. The following persons were members of the IEEE P1301.4 Working Group: Joe Trainor, Chair Elwood Parsons, Vice Chair Roger Hins
22、dale, Technical Editor Mike Humphrey (Task Group Leader) Clifford Lupien (Draft Editor) James Koser, Secretary The following persons were on the balloting committee: Ed J. Barsotti Ralf Bokmper David Brearley Wayne P. Fischer Paul J. Fulton Kenneth C. Heck Roger Hinsdale James R. Koser Kristian Mart
23、inson Elwood T. Parsons Douglas Rawson-Harris Richard C. Spratt Nobuaki Sugiura Michael G. Thompson Eike G. Waltz When the IEEE Standards Board approved this standard on 10 December 1996, it had the following membership: Donald C. Loughry, Chair Richard J. Holleman, Vice Chair Andrew G. Salem, Secre
24、tary Gilles A. Baril Clyde R. Camp Joseph A. Cannatelli Stephen L. Diamond Harold E. Epstein Donald C. Fleckenstein Jay Forster* Donald N. Heirman Ben C. Johnson E. G. “Al” Kiener Joseph L. Koepfinger* Stephen R. Lambert Lawrence V. McCall L. Bruce McClung Marco W. Migliaro Mary Lou Padgett John W.
25、Pope Jose R. Ramos Arthur K. Reilly Ronald H. Reimer Gary S. Robinson Ingo Rsch John S. Ryan Chee Kiow Tan Leonard L. Tripp Howard L. Wolfman *Member Emeritus Also included are the following nonvoting IEEE Standards Board liaisons: Satish K. AggarwalAlan H. CooksonChester C. Taylor Lisa S. Young IEE
26、E Standards Project Editor Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:43:55 MDTNo reproduction or networking permitted without license from IHS -,-,- iv
27、CLAUSEPAGE 1. Overview.1 1.1 Scope 1 1.2 Purpose. 1 1.3 Dimensions. 1 1.4 Coordination dimensions . 2 1.5 Environmental requirements 2 1.6 Conformance 2 2. References.2 3. Word usage, definitions, and abbreviations3 3.1 Special word usage. 3 3.2 Definitions 3 3.3 Abbreviations. 4 3.4 Dimensional loc
28、ation nomenclature. 4 4. General arrangement.5 4.1 Mezzanine card coordination dimensions 6 4.2 Mezzanine card boundary envelope. 7 4.3 Mezzanine card spacing9 4.4 Mezzanine card types. 9 4.5 Mezzanine card elements. 10 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided b
29、y IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:43:55 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright 1997 IEEE All Rights Reserved1 IEEE Standard for a Metric Equipment Practice for Microcomputers Coor
30、dination Document for Mezzanine Cards 1. Overview 1.1 Scope This generic standard may be applied in all fields of electronics where equipment and installations are required to conform to a metric modular order. This standard establishes the metric modular order for parallel mounted, interconnected e
31、lectronic circuit assemblies, hereafter referred to as mezzanine cards, and may be applied in other applications. The choice of coordination dimensions for the mechanical structure lies within a homogeneous, metric, modular, three-dimensional grid as specified in IEC 917.2-1992 and referenced in IEE
32、E Std 1301-1991.1 Optimum conditions are thereby created for the application of computer-assisted methods throughout design and manufacturing, e.g., computer-assisted planning, development, manufacturing, testing, and installation. Due to the application-specific nature of mezzanine cards, the elect
33、rical and mechanical interconnect implementation will require definition that is beyond the scope of this document. 1.2 Purpose This generic standard has been generated to establish a metric modular order nomenclature for mezzanine cards, thereby providing a universal document that makes a mezzanine
34、 card easier to specify and that can be used to foster and support many specific applications. 1.3 Dimensions All dimensions in this document are in millimeters as per ISO 1000: 1992 and ISO 31-1: 1992, unless otherwise specified. 1Information on references can be found in clause 2. Copyright The In
35、stitute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:43:55 MDTNo reproduction or networking permitted without license from IHS -,-,- 2Copyright 1997 IEEE All Rights Reserved IEEE
36、Std 1301.4-1996IEEE STANDARD FOR A METRIC EQUIPMENT PRACTICE FOR 1.4 Coordination dimensions IEEE Std 1301-1991 defines the actual dimensions of a 25 mm metric equipment practice. These actual dimensions are derived from coordination dimensions using the principles of boundary and axis references il
37、lustrated in IEC 917.2-1992 and IEEE Std 1301-1991. Overall dimensions and internal subdivisions are determined by using mounting pitches (mp1 = 25 mm, mp2 = 5 mm, mp3 = 2.5 mm, mp4 = 0.5 mm, and mp5 = 0.05 mm) to derive the dimensions given in this standard. They are also used when extending this s
38、tandard with additional dimensions (where such extensions are permitted) and when alternative positions of piece parts are described (in such cases, the relationships between involved dimensions shall be maintained). A subscript “c” has been used in this document to indicate coordination dimensions.
39、 1.5 Environmental requirements The appropriate environmental requirements will be defined by other related standards or application-specific standards. 1.6 Conformance Conformance with this standard can be claimed provided that a)The required values are used. b)Allowed but non-preferred dimensions
40、and options, as indicated in this standard, are implemented. 2. References The following publications shall be used conjunction with this standard: IEC 50:, International Electrotechnical Vocabulary.2 IEC 149: 1988, Terms and Definitions for Printed Circuits. IEC 916:1988, Mechanical structures for
41、electronics equipmentTerminology IEC 917-2: 1992, Modular order for the development of mechanical structures for electronic equipment practicesPart 2: Sectional specificationInterface coordination dimensions for the 25 mm equipment practice. IEC 917-2-2: 1994, Modular order for the development of me
42、chanical structures for electronic equipment practicesPart 2: Sectional specificationInterface coordination dimensions for the 25 mm equipment practiceSection 2: Detail specificationDimensions for subracks, chassis, backplanes, front panels, and plug-in units. IEEE Std 100-1996, The IEEE Standard Di
43、ctionary of Electrical and Electronics Terms.3 2IEC publications are available from IEC Sales Department, Case Postale 131, 3, rue de Varemb, CH-1211, Genve 20, Switzerland/Suisse. IEC publications are also available in the United States from the Sales Department, American National Standards Institu
44、te, 11 West 42nd Street, 13th Floor, New York, NY 10036, USA. 3As this standard goes to press, IEEE Std 100-1996 is approved but not yet published. Anticipated publication date is April 1996. IEEE publications are available from the Institute of Electrical and Electronics Engineers, 445 Hoes Lane, P
45、.O. Box 1331, Piscataway, NJ 08855-1331, USA. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:43:55 MDTNo reproduction or networking permitted without license
46、 from IHS -,-,- Copyright 1997 IEEE All Rights Reserved3 MICROCOMPUTERS-COORDINATION DOCUMENT FOR MEZZANINE CARDS IEEE Std 1301.4-1996 IEEE Std 1301-1991, IEEE Standard for Metric Equipment Practice for MicrocomputersCoordinating Document (ANSI). IEEE Std 1301.2-1993, IEEE Recommended Practices for
47、the Implementation of a Metric Equipment Practice (ANSI). ISO 31-1: 1992, Quantities and unitsPart 1: Space and time. ISO 1000: 1992, SI units and recommendations for the use of their multiples and of certain other units. ISO/DIS 1101, Geometrical Product Specifications (GPS)Geometrical tolerancingG
48、eneralities, definitions, symbols, indication on drawings. (Revision of ISO 1101: 1983).4 3. Word usage, definitions, and abbreviations 3.1 Special word usage may: A key word indicating flexibility of choice with no implied preference. The phrase is optional is used interchangeably with the key word may. shall: A key word indicating a mandatory requirement. Designers shall implement such mandatory requirements to insure interchangeability and to claim conformance with the specification. The phrase is required is used interchangeably with the key word shall. should: A key word indic