Downloaded from http://www.everyspec.com METRIC MIL-HDBK-1760A 10 March 2004 Superseding: MIL-HDBK-1760 15 February 2000 DEPARTMENT OF DEFENSE HANDBOOK AIRCRAFT/STORE ELECTRICAL INTERCONNECTION SYSTEM This handbook is for guidance only. Do not cite this document as a requirement. AMSC: N/A AREA SESS DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Downloaded from http://www.everyspec.com MIL-HDBK-1760A FOREWORD 1. This handbook was developed by a team including members from the three U.S. military services, the UK MOD, the SAE AS-1B committee, and contractors. It includes information previously published in document ASD-TR-87-5028 with certain elements of ASD-TR-91-5009. Some of this information was also published in DEF-STAN-00-69 (Part II), which is written around MIL-STD-1760B. This revision of this handbook is written around MIL-STD-1760D and assumes that the reader is also reading 1760D. 2. This handbook provides information on the implementation of a standardized electrical interconnection system, as defined by MIL-STD-1760, into both current and future aircraft and stores. It provides guidance on design considerations and options for including the standard interface capability at the aircraft's store stations and for providing a common electrical interface on carriage stores and mission stores. As a handbook, it cannot be invoked as a requirement in a contract. 3. Trends in weapon system designs (aircraft and stores) caused concern over the general proliferation of aircraft-to-store electrical interfacing requirements and the resulting high cost to achieve interoperability between aircraft and stores. The intent of MIL-STD-1760 is to reduce the aircraft/store electrical integration problem by specifying a standard electrical interface between aircraft and stores. The standard electrical interface is based on recognized trends in store management systems which use serial digital data transmission for control, monitor and release of stores. In general, the handbook provides the following: a. An overview of MIL-STD-1760 requirements, exclusions and future growth provisions. b. Detail design considerations applicable to the Aircraft Station Interface (ASI), Mission Store Interface (MSI), Carriage Store Interface (CSI) and the Carriage Store Station Interface (CSSI), with application guidelines. c. Aircraft/Store Physical Design Considerations. d. A commentary on the purpose of each requirement in MIL-STD-1760. e. A summary of changes between the various revisions of MIL-STD-1760. 4. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: ASC/ENOI, 2530 Loop Road West, Wright-Patterson AFB, OH 45433-7101, or e-mailed to: [email protected]. ii Downloaded from http://www.everyspec.com MIL-HDBK-1760A CONTENTS (Abbreviated - limited to 2 digit paragraph numbers) PARAGRAPH PAGE 1. SCOPE.............................................................................................................................. 1 1.1 Purpose............................................................................................................................. 1 1.2 Background. ...................................................................................................................... 1 1.3 Limitations. ........................................................................................................................ 2 2. APPLICABLE DOCUMENTS ............................................................................................ 3 2.1 General. ............................................................................................................................ 3 2.2 Government documents.................................................................................................... 3 2.3 Other Government documents, drawings, and publications. ............................................ 4 2.4 Non-Government standards and other publications.......................................................... 5 2.5 MIL-STD-1760...................................................................................................................5 3. DEFINITION OF TERMS AND ACRONYMS .................................................................... 6 3.1 Definition and use of terms. .............................................................................................. 6 3.2 Acronyms and Abbreviations. ........................................................................................... 9 4. GENERAL ....................................................................................................................... 16 4.1 Scope of the standard. .................................................................................................... 16 4.2 MIL-STD-1760 interface definitions................................................................................. 19 4.3 MIL-STD-1760 interface elements. ................................................................................. 20 4.4 MIL-STD-1760 classes.................................................................................................... 23 4.5 Summary of requirements............................................................................................... 23 4.6 Purpose, goals and projected benefits of MIL-STD-1760. .............................................. 29 4.7 The MIL-STD-1760 application process.......................................................................... 33 5. SYSTEM DESIGN........................................................................................................... 36 5.1 General. .......................................................................................................................... 36 5.2 Aircraft design considerations. ........................................................................................ 36 5.3 Store design considerations............................................................................................ 47 5.4 System safety features.................................................................................................... 51 5.5 Interface design/documentation process. ....................................................................... 73 5.6 Future trends and considerations.................................................................................... 77 6. DIGITAL DATA BUS INTERFACE .................................................................................. 79 6.1 Overview of data bus application to AEIS. ...................................................................... 79 6.2 Data communications and system control. ..................................................................... 84 6.3 Network reconfiguration. ................................................................................................. 86 6.4 Data bus interface EMI considerations. .......................................................................... 88 6.5 Architectural considerations. ........................................................................................... 94 6.6 Data bus topology issues. ............................................................................................... 99 6.7 Mission store issues...................................................................................................... 107 7. DISCRETES.................................................................................................................. 113 7.1 Release consent. .......................................................................................................... 113 7.2 Interlock interface.......................................................................................................... 127 7.3 Address interface. ......................................................................................................... 135 8. HIGH BANDWIDTH INTERFACES............................................................................... 149 8.1 General. ........................................................................................................................ 149 8.2 Detailed discussion on HB requirements. ..................................................................... 154 iii Downloaded from http://www.everyspec.com MIL-HDBK-1760A PARAGRAPH PAGE 8.3 Cable selection for HB interfaces.................................................................................. 175 8.4 HB Type A signal path linear distortion. ........................................................................ 175 8.5 HB Type A signal path system-level performance budget. ........................................... 188 8.6 Video signal path system-level performance. ............................................................... 199 8.7 Requirements for GPS RF Signals. .............................................................................. 204 9. LOW BANDWIDTH (LB)................................................................................................ 210 9.1 LB characteristics.......................................................................................................... 210 9.2 Aircraft design requirements. ........................................................................................ 211 9.3 Mission store low bandwidth interface. ......................................................................... 214 9.4 Grounding requirements. .............................................................................................