1、 VITA PO Box 19658, Fountain Hils, AZ 85269 PH: 480-837-7486 Email: URL: htp:/www.vita.co Approved American National Standard ANSI/VITA 48.0 Mechanical Specification for Microcomputers Using Rugedized Enhanced Design Implementation (REDI) Abstract This standard defines a mechanical implementation f
2、or plug-in units. Two types of plug-in units are defined: type 1 and type 2. Both type 1 and type 2 plug-in units take advantage of increased slot pitch to provide enhanced thermal performance and increased structural durability. Type 1 units suport Level 2 maintenance while type 2 units do not. App
3、roved June 2010 American National Standards Institute, Inc. American National Standard Approval of an American National Standard requires verification by ANSI that the requirements for due proces, consensus, and other criteria for approval have been met by the standards developer. Consensus is estab
4、lished when, in the judgment of the ANSI Board of Standards Review, substantial agrement has ben reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necesarily unanimity. Consensus requires that al views and objections be consi
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6、esses, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and wil in no circumstances give an interpretation of any American National Standard. Moreover, no person shal have the right or authority to isue an interpretation of an Americ
7、an National Standard in the name of the American National Standard Institute. Requests for interpretations should be adresed to the secretariat or sponsor whose name apears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. Th
8、e procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchases of American National Standards may receive curent information on al standard by caling or writing the Aerican National Standards Institute. Pu
9、blished by VMEbus International Trade Asociation (VITA) PO Box 19658, Fountain Hils, AZ 85269 Copyright 2010 by VMEbus International Trade Asociation All rights reserved. Permision of the publisher is required to reproduce this document or any part of it. Printed in the United States of America - R1
10、.0 ISBN 1-885731-59-0 ANSI/VITA 48.0-2010 Page 3 of 17 Working Group During the development of this standard working group membership included: Name Organization Status 1 Randy Banton Mercury Computer Systems Sponsor 2 Stewart Dewar Curtis-Wright Controls Embeded Computing Sponsor 3 Jim Robles The B
11、oeing Company Sponsor 4 Michael Benjamin Parker Hanifin Corporation Sponsor 5 Rex Harvey Parker Hanifin Corporation Sponsor 6 Richard Hodges Parker Sponsor 7 Dan Golden The Boeing Company Sponsor 8 Ivan Straznicky Curtis-Wright Controls Embeded Computing Sponsor 9 Steve Belvin ISBi Participant 10 Ad
12、am Bloch EATON Aerospace Participant 11 Gorky Chin Curtis-Wright Controls Embeded Computing Participant 12 David Compston Radstone Participant 13 Gerard Drewek General Dynamics Participant 14 Doug DuBois L-3 Communications Participant 15 Chris Eckert SBS technologies, Inc. Participant 16 Mark Heslep
13、 MITRE Corporation Participant 17 Itzhak Hirshtal Elta Electronic Industries Participant 18 Frank Hom APW Electronic Solutions Participant 19 Andreas Lenkisch Schrof GmbH Participant 20 Charles Linquist Dawn VME Products, Inc. Participant 21 David McCalum Molex Participant 22 Bob Paterson Tyco Elect
14、ronics Participant 23 Andrew Redig TEK Microsystems Participant 24 John Rynearson VITA Participant 25 Bob Sulivan Hybricon Corporation Participant 26 Bruce Thomas Curtis-Wright Controls Embeded Computing Participant 27 Michael Thompson Pentair Electronic Packaging Participant 28 Mike Biemer Northrop
15、 Gruman Corporation Participant 29 Scot Goedeke Northrop Gruman Corporation Participant 30 Ken Boyete Critia Computer, Inc. Observer 31 Michael Munroe Bustronics Observer 32 Elwod Parsons Standard Consultant Observer 33 Mac Rush Motorola Computer Group Observer ANSI/VITA 48.0-2010 Page 4 of 17 Table
16、 of Contents 1 Scope5 2 Purpose.5 3 Intelectual Property5 4 References6 4.1 Terminology6 4.1.1 Abbreviations.6 4.1.2 2 Level Maintenance (2LM).7 4.1.3 Special Word Usage7 5 General Arangement.8 6 Circuit Board Sizes8 7 Plug-in Unit Sizes9 8 Position of Plug-in Unit Mounted Conectors and Backplane Mo
17、unted Conectors11 9 EMC11 9.1 Plug-in Unit EMC Design Considerations.11 9.2 Sub-rack Interface Considerations12 10 Filer Panels/Slot Blockers12 10.1 Air-Cooled Systems.12 10.2 Conduction Cooled Systems.12 10.3 Liquid Cooled Systems Inboard QDs.12 10.4 Liquid Cooled Systems Inboard QDs.12 10.5 Air Fl
18、ow Thru Coled Systems12 11 Plug-in Unit-to-Backplane Relationship13 12 Guide Pin Guide Socket and Keying13 13 Primary Side Cover.13 14 Secondary Side Cover13 15 Plug-in Unit Insertion/Extraction Features14 16 ESD Protection14 17 Additional 2 Level Maintenance Considerations.14 18 Backplane Design an
19、d Mounting Positions.15 18.1 Rigidity.15 18.2 Dimensions15 19 Sub-rack Interface Considerations15 20 System Level Considerations.15 21 Environental Requirements and Requirements for Design and Construction, Safety and Quality.15 21.1 Environments.16 21.2 Design and Construction.16 21.3 Safety16 21.4
20、 Quality.16 Table of Figures Figure 1. Generic 3U and 6U board sizes9 Figure 2. Matrix of the plug-in unit pitches and coling methods covered by this standard.11 ANSI/VITA 48.0-2010 Page 5 of 17 1 Scope !“#$%$+%)%$%6+%$%+(“(0+)%#(1.(+%02(+01.(+%02(+0-#(-%1.3-4#(%3(#1.(+%I11.#+)%:)%I$%+.+(+$%2,%+1%23
21、1.(+%)+$#-(%()%*+1“#9%?+%$3,#0#+(#(-%#(&2%0023(&%&“+%(+)%,2*%)#,+*+(&%.+%)+$#-(%()%02($&*30(%$,+&7%()%E3.#&75%21.1 Environments !“+$+%*+E3#*+/+(&$%*+%#(&+()+)%&2%+($3*+%/#(#/3/%.+%“().#(-%()%&*($12*&5%!$81/$29,7012%:()%!71+%9%()%!71+%:%1.3-4#(%3(#&$%*+1“#9%?+%)+$#-(+)%02($#$&+(&%6#&“%&“+%$1+0#,#0
22、%*+E3#*+/+(&$%)+,#(+)%#(%IYAHFGH!I%J%A+0(%J%,2*%&“+%1.#0?.+%02.#(-%/+&“2)%()%+(#*2(/+(&.%0.$5%21.2 Design and Construction !$81/$29,7012 21-2: The plug-in units (Type 1and Type 2) *+1“#9 ?+%)+$#-(+)%02($#$&+(& with the requirements for design and construction as defined in ANSI/VITA 47, section 5
23、. 21.3 Safety !$81/$29,7012 21-3: The plug-in units (Type 1and Type 2) *+1“#9%?+%)+$#-(+)%02($#$&+(& with the safety requirements as defined in ANSI/VITA 47, Section 6. 21.4 Quality !$81/$29,7012 21-4: The plug-in units (Type 1and Type 2) *+1“#9%?+%)+$#-(+)%02($#$&+(& with the quality requirements as defined in ANSI/VITA 47, Section 7. ANSI/VITA 48.0-2010 Page 17 of 17 END OF DOCUMENT
