1、 VITA PO Box 19658, Fountain Hils, AZ 85269 PH: 480-837-7486 Email: URL: htp:/ Approved American National Standard ANSI/VITA 58.0 Line Replaceable Integrated Electronics Chasis Standard Abstract This standard provides common design and performance requirements for a family of integrated electronic
2、chassis incorporating updated industry standard high speed electronic assemblies and designed for rugged environments. Approved May 2009 American National Standards Institute, Inc. American National Standard Approval of an American National Standard requires verification by ANSI that the requirement
3、s for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement me
4、ans much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect pr
5、eclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretatio
6、n of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standard Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name ap
7、pears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchases of Americ
8、an National Standards may receive current information on all standard by calling or writing the American National Standards Institute. Published by VMEbus International Trade Association (VITA) PO Box 19658, Fountain Hills, AZ 85269 Copyright 2009 by VMEbus International Trade Association All rights
9、 reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America - R1.0 ISBN 1-885731-50-7 ANSI/VITA 58.0 Page 3 of 27 Table of Contents 1 INTRODUCTION8 2 P
10、URPOSE8 3 INTELLECTUAL PROPERTY.8 4 TERMINOLOGY.8 5 REFERENCES.10 6 DESIGN REQUIREMENTS13 6.1 Overview13 6.2 LRU Identification13 6.3 Envelope.14 6.4 Connectors.17 6.5 Alignment and Keying20 6.6 LRU Insertion, Extraction and Retention, LRU handle.20 6.7 LRU Insertion, Extraction Forces.24 6.8 Liquid
11、 Cooling Interface24 6.9 Air Cooling Interface24 6.10 LRU Mass.26 6.11 Maintenance.26 7 ENVIRONMENTS27 8 DESIGN AND CONSTRUCTION.27 9 SAFETY.27 10 QUALITY.27 ANSI/VITA 58.0 Page 4 of 27 List of Figures FIGURE 6.3-1A VITA 58 LRU ENVELOPE (M83527 CONECTOR SHOWN)15 FIGURE 6.3-1B VITA 58 LRU ENVELOPE (A
12、RINC 600 CONECTOR SHOWN).16 FIGURE 6.4-1A CONECTOR LOCATION AREA (WITH M83527 CONECTOR)18 FIGURE 6.4-1B CONECTOR LOCATION AREA (WITH ARINC 600 CONECTOR).19 FIGURE 6.6-1A RETENTION/EXTRACTION/HANDLE SPACE ALOCATION BOTOM SWING HANDLE.21 FIGURE 6.6-1B RETENTION/EXTRACTION/HANDLE SPACE ALOCATION TOP SW
13、ING HANDLE.22 FIGURE 6.6-2 HANDLE LATCH TO TRAY INTERFACE REQUIREMENTS.23 FIGURE 6.8-1 COLANT INTERFACE LOCATIONS AND SPACE PROVISIONS25 List of Tables TABLE 6.3-1 LRU MAS14 TABLE 6.3-2 LRU SIZE DESIGNATION AND IMENSIONS.17 TABLE 6.4-1 CONECTOR LOCATION AREA WIDTHS.19 TABLE 6.8-1 COLANT INTERFACE LO
14、CATIONS26 ANSI/VITA 58.0 Page 5 of 27 Abstract This standard provides common design and performance requirements for a family of integrated electronic chassis incorporating updated industry standard high speed electronic assemblies and designed for rugged environments. Foreword VITA 58 is an integra
15、ted modular chassis standard defining a COTS LRU implementation based upon best practices in industrial design and suitable for mobile applications and harsh environments. The VITA 58 initiative may address the following target markets: Commercial transportation control systems High-performance, mob
16、ile scientific computing Signal and image processing o Examples: seismic exploration, medical imaging, sensor processing High-end industrial control and computing in harsh environments o Example: Petrochemical Control Systems Land-mobile, airborne (manned and unmanned) and seaborne vehicles Ground s
17、tation processing subsystems ANSI/VITA 58.0 Page 6 of 27 VITA Working Group Members At the time this standard was completed, the VITA Working Group had the following membership: Name Company Alderman, Ray VITA Bechtold, Lori The Boeing Company Benjamin, Michael Parker Bererra, Ralph Curtiss-Wright C
18、ecil, Stephen NSWC Crane Compston, David Radstone Downing, Robert Fermilab Drewek, Gerard General Dynamics C4 Systems Golden, Dan The Boeing Company Harvey, Rex Parker Heckman, Melissa Bustronic Hodges, Richard Parker Hom, Frank APW Humphrey, Michael AP Labs Kwok, Jing Curtiss-Wright Mcintire, Steve
19、 Tyco Mendes, Victor Hypertronics Moorma, Andr Rockwell Collins Munroe, Michael Elma Bustronic Corp. Nickerson, Eric Amphenol Nisenboim, Renata ELTA Northey, Bill FCI Olson, Earle Tyco Pacha, John Rockwell Collins Parsons, Elwood Foxconn Patterson, Bob Tyco Patterson, Doug Aitech Pepper, David GE/Fa
20、nuc Powers, Gregory Tyco Robles, Jim The Boeing Company Rush, Mac Motorola Rynearson, John VITA Shieh, Andrew CSP, Inc. Spence, Andrew Amphenol Straznicky, Ivan Curtiss-Wright Sullivan, Bob Hybricon Thomas, Bruce Curtiss-Wright Working Group Chairman: Dan Golden, The Boeing Company ANSI/VITA 58.0 Pa
21、ge 7 of 27 Coments, Corections and/or Aditions Anyone wishing to provide comments, corrections and/or additions to this standard, please direct them to: VITA Technical Director, VITA (http:/) Other VITA Standards Should anyone want information on other standards being developed by the VITA Standard
22、s Organization (VSO), please see the VITA website, http:/, for contact information. Revision History Revision No. Date Comments Basic Testing Procedures and Measuring Methods IEC 60950-1:2001, Information Technology Equipment - Safety Part 1: General Requirements. The standards listed below are avai
23、lable from the Institute of Electrical and Electronics Engineers (IEEE): http:/shop.ieee.org/store IEEE 1101.1-1998, IEEE Standards for Mechanical Core Specifications for Microcomputers Using IEC 603-2 Connectors IEEE 1101.2-1992 IEEE Standard for Mechanical Core Specifications for Conduction-Cooled
24、 Eurocards IEEE 1101.3-1993, IEEE Mechanical Standard for Conduction-Cooled and Air-Cooled 10 SU Modules ANSI/VITA 58.0 Page 12 of 27 The following standards are available from Aeronautical Radio, Incorporated (ARINC). htps:/ ARINC 404A, Air Transport Equipment Cases and Racking ARINC 600, Air Trans
25、port Avionics Equipment Interfaces The following standards are available from the American Society of Mechanical Engineers (ASME). http:/digital.asme.org/Codes_Standards_Digital_Books.cfm ASME Y14.5M 1994 The following standards are available from the following website. http:/assist.daps.dla.mil/qui
26、cksearch/ DOD-STD-1788, Avionics Interface Design Standard MIL-PRF-85726B, Specification for Forced Air-Cooled Standard Avionics Enclosure MIL-DTL-83527, General Specification For Rectangular Multiple Insert Type Rack To Panel, Plug And Receptacle, Electrical Connectors ANSI/VITA 58.0 Page 13 of 27
27、6 Design Requirements 6.1 Overview The intent of this standard is to provide a line replaceable chassis which accommodates VITA 46, VITA 48 and IEEE 1101 format plug-in boards, as well as providing an upgrade path for older ARINC 404A, and ARINC 600 applications. The modularity of the LRU sizing is
28、based on those standards while adapting them to the VITA/IEEE board formats. The VITA 58 family of specifications is intended to address variations in envelope, cooling method, connectors, coolant couplings, and in general, mechanical and electrical interface requirements and is arranged as follows.
29、 58.0 General specification for Line Replaceable Integrated Electronics Chassis 58.1 Liquid cooled LRU 58.2 Air Flow-Through cooled LRU Observation 6-1 This VITA 58 specification structure is not intended to preclude future variations resulting from plug-in unit standards or other unique envelope or
30、 mechanical/electrical requirements. 6.2 LRU Identification Rule 6-1: Each LRU shall be identified in accordance with the following. Product nomenclature shall consist of a series of codes separated by a “-“ (dash). The code assignments are as follows. - V58 for VITA 58 - Type of cooling (air or liq
31、uid) - Plug-in-unit environmental Classification (classification as identified in ANSI/VITA 47) - Plug-in unit type classification (Type 1 or Type 2 per VITA 48 or Type 3 for other formats) - VITA 58 size code (reference Table 6.3-1 (V58/1H1, V58/2H1, V58/3H2 ) - Maintenance level (2 or 2+) Example:
32、 V58-Air-ECC1-Type 1-V58/3-2 This describes an air flow-through cooled LRU, environmental class ECC1 per VITA 47, containing Type 1 conduction cooled modules per VITA 48.2, a VITA 58 size 3 envelope (which is the same in width and depth as a 4 MCU per ARINC 600), designed for 2-level maintenance (th
33、e plug-in modules within the LRU are field replaceable as is the LRU). Observation 6-2: The environmental classification of the plug-in units incorporated implies that the line replaceable unit is of equal environmental capability. Rule 6-2: Each LRU shall be part marked with the part number, serial
34、 number, product nomenclature (as defined in Rule 6-1), Manufacturers name, CAGE code (optional) on the front surface of the LRU located as shown in the dot specification. ANSI/VITA 58.0 Page 14 of 27 Rule 6-3: The method used for part marking shall remain legible and permanently affixed after expos
35、ure to the environments identified in ANSI/VITA 47 for the applicable environmental classification. 6.3 Envelope Observation 6-3: All dimensions and tolerances are in millimeters unless otherwise noted. Dimensioning and tolerancing is in accordance with ASME Y14.5M 1994. Orthographic views are third
36、 angle projection. Rule 6-4: LRU mass shall not exceed the values identified in Table 6.3-1. VITA 58 Envelope Size Mass (Kilograms) Height H1 Height H2 V58/1 5.2 5.0 V58/2 10.3 10.0 V58/3 10.3 10.0 V58/4 18.0 17.5 V58/5 20.5 20.0 V58/6 20.5 20.0 V58/7 20.5 20.0 V58/8 20.5 20.0 Table 6.3-1 LRU Mass R
37、ecommendation 6-1: The preferred LRU widths are identified in Table 6.3-2. See Figure 6.3-1a and 6.3-1b and Table 6.3-2 for dimensions. Rule 6-5: The design of the LRU shall accommodate the forces associated with LRU installation and removal including connector insertion and extraction forces, overt
38、ravel, coolant quick disconnect insertion and extraction forces or any other induced forces resulting from environmental exposure as defined in ANSI/VITA 47 or installation and removal without out-of-specification degradation of the product over its intended service life. Observation 6-4: Use of the
39、 ARINC 600 compatible widths ensures backward compatibility (of width and depth) of products for potential ARINC 404A, and ARINC 600 retrofit applications. ANSI/VITA 58.0 Page 15 of 27 Figure 6.3-1a VITA 58 LRU Envelope (M83527 Connector Shown) ANSI/VITA 58.0 Page 16 of 27 Figure 6.3-1b VITA 58 LRU
40、Envelope (ARINC 600 Connector Shown) ANSI/VITA 58.0 Page 17 of 27 VITA 58 LRU Size1Dimension W (mm) Minimum - Maximum Depth (mm) Dimension H2 (Height) (mm) (ARINC 600 Size Designation)3V58/1H1 V58/1H2 50 0.5 318 H1=225, H2=194.06 V58/2H1 V58/2H2 100 0.5 318 H1=225, H2=194.06 V58/3H1 V58/3H2 123.44 1
41、24.46 318 H1=225, H2=194.06 4 MCU V58/4H1 V58/4H2 150 0.5 318 H1=225, H2=194.06 V58/5H1 V58/5H2 200 0.5 318 H1=225, H2=194.06 V58/6H1 V58/6H2 255.78 256.80 318 H1=225, H2=194.06 8MCU V58/7H1 V58/7H2 300 0.5 318 H1=225, H2=194.06 V58/8H1 V58/8H2 400 0.5 318 H1=225, H2=194.06 Notes: 1 2 height options
42、 are available for each LRU size and are designated by appending H1 or H2 to the size code. 2 H2 height is intended for ARINC 600 retrofit applications. 3 ARINC 600 Size Designation refers to width and depth compatibility only. Table 6.3-2 LRU Size Designation and Dimensions 6.4 Connectors Rule 6-6:
43、 The primary LRU connector shall be located as shown in figures 6.4-1a, 6.4-1b and Table 6.4-1. Rule 6-7: The LRU primary connector(s) shall be configured as specified in the VITA 58 dot specification. Rule: 6-8: The connector shall provide mechanical support at the rear of the LRU in the installed
44、condition under all loading conditions as identified for the applicable VITA 47 environmental classification. Recommendation 6-2: Tray design supporting the interfacing connector needs to be of sufficient rigidity to withstand insertion and extraction forces without deformation beyond .38 mm with an
45、y complement of connector pins installed in order to ensure consistent connector mating geometry and forces (reference ARINC 600-16, Attachment 5). Recommendation 6-3: The preferred connector type is MIL-DTL-83527. ANSI/VITA 58.0 Page 18 of 27 Observation 6-5: Commercial type ARINC 600 connectors ma
46、y be used provided that requirements of the desired VITA 47 environmental classification as well as the requirements herein can be met. Rule 6- 9: The primary connectors specified for use on chassis conforming to this standard shall be ESD-protected in accordance with ANSI/VITA 47. Recommendation 6-
47、4: LRUs should use ESD-protected connectors for all optional connectors. Figure 6.4-1a Connector Location Area (with M83527 Connector) See notes page 19. ANSI/VITA 58.0 Page 19 of 27 Figure 6.4-1b Connector Location Area (with ARINC 600 Connector) Notes: 1 - Area allocated for connector and mounting
48、 hardware only within the dimensional constraints indicated. Dimension C (mm) Minimum MIL-DTL-83527/ARINC 600 Shell Size M83527 Connector ARINC 600 Connector 2 53.09 45.97 3 90.55 83.19 4 127.25 NA Table 6.4-1 Connector Location Area Widths ANSI/VITA 58.0 Page 20 of 27 6.5 Alignment and Keying Rule
49、6-10: The LRU rear connector shall provide the necessary alignment for insertion as well as acting as the rear LRU hold-down. The connector shall accommodate up to 2.54 millimeters of misalignment between the LRU and the shelf. Rule 6-1: The connector shall provide a means of keying which will prevent engagement or damage to the connector except in a tray designed for that specific key configuration. Rule 6-12: The ke
