1、DIGITAL DATA SYSTEM COMPENDIUM ARINC REPORT 419-3 PUBLISHED: NOVEMBER 5,1984 AN ARIN= DOCUMENT PNpnd by AIRUNES ELECTRONIC ENGINEERING COMMIlTEE AERONAUTICAL RADIO, INC. 2551 RIVA ROAD, ANNAPOLIS, MARYLAND 21401 Publlrhed by This document is based on material submitted by various participants during
2、 the drafting process. Neither AEEC nor ARINC has made any determination whether these materials could be subject to valid claims of patent, copyright or other proprietary rights by third parties, and no representation or warranty, express or implied, is made in this regard. Any use of or reliance o
3、n this document shall constitute an acceptance thereof “as is“ and be subject to this disclaimer. , REPLACEMENT PAGE REVISED: September 21, 1983 Copyright 1994 by AERONAUTICAL RADIO, INC. 2551 Riva Road Annapolis, Maryland 21401-7465 USA ARINC SPECIFICATION 419-3 DIGITAL DATA SYSTEM COMPENDIUM Publi
4、shed: November 5, 1984 Prepared by the Airlines Electronic Engineering Committee Specification 419 Specification 419 Specification 419-1 Specification 419-2 Specification 419-3 Adopted by the Airlines Electronic Engineering Committee: Approved by the Air Lines Communications Administrative Council A
5、dopted by the Airlines Electronic Engineering Committee: Adopted by the Airlines Electronic Engineering Committee: Adopted by the Airlines Electronic Engineering Committee: December 15, 1972 February 6, 1972 April 30, 1974 November 4, 1982 September 21, 1983 FOREWORD . Activities of AERONAUTICAL RAD
6、IO, INC. (ARINC) and the Purpose of ARINC Reports and Specifications Aeronautical Radio, Inc. is a corporation in which the United States scheduled airlines are the principal stockholders. Other stockholders include a variety of other air transport companies, aircraft manufacturers and non-U.S. airl
7、ines. Activities of ARINC include the operation of an extensive system of domestic and overseas aeronautical land radio stations, the fulfillment of systems requirements to accomplish ground and airborne compatibility, the allocation and assignment of fiequencies to meet those needs, the coordinatio
8、n incident to standard airborne compatibility, the allocation and assignment of fiequencies to meet those needs, the coordination incident to standard airborne communications and electronics systems and the exchange of technical mformation. ARINC sponsors the Airlines Electronic Engineering Committe
9、e (AEEC), composed of airline technical personnel. The AEEC formulates standards for electronic equipment and systems for the airlines. The establishment of Equipment Characteristics is a principal hction of this committee. It is desirable to reference certain general ARINC Specifications or Report
10、which are applicable to more than one type of equipment. These general Specifications and Reports may be considered as supplementary to the Equipment Characteristics in which they are referenced. They are intended to set forth the desires of the airlines pertaining to components and general design,
11、construction and test criteria, in order to insure satisfactory operation and the necessary interchangeability in airline service. The release of a Specification or Equipment Characteristics should not be construed to obligate ARINC or any airline insofar as the purchase of any components or equipme
12、nt is concerned. An ARINC Report ( Specification or Characteristic) has a twofold purpose, which is: (1) To indicate to the prospective mandacturers of airline electronic equipment the considered opinion of the airline technical people, coordinated on an industry basis, concerning requisites of new
13、equipment, and (2) To channel new equipment designs in a direction which can result in the maximum possible standardization of those physical and electrical characteristics which influence interchangeability of equipment without seriously hampering engineering initiative. 11 AFXNC SPECIFICATION 419
14、REVISED September 21, 1983 Section 1.0 - 1.1 1.2 1.3 1.4 1.5 1.6 1.7 2.0 2.1 2.1.1 2.1.2 2.1.3 2.1.4 2.1.5 2.1.6 2.2.1 2.2.2 2.2.3 2.2.4 2.3.1 2.3.2 2.3.3 2.3.4 2.4.1 2.4.2 2.4.3 2.4.4 2.2 2.3 2.4 2.5 3. O 3.1 3.2 3.3 2.1.2.1 2.1.2.2 2.1.2.3 2.1.2.4 2.1.3.1 2.1.3.2 2.1.3.3 2.1.6.1 2.1.6.2 2.1.6.3 2.
15、1.6.4 2.1.6.5 2.1.6.7 2.2.3.1 2.1.6.6 2.2.3.2 2.2.3.3 2.2.3.4 2.2.3.5 2.2.3.6 2.2.4.1 2.2.4.2 2.2.4.3 2.2.4.4 2.3.1.1 2.3.3.1 2.4.2.1 2.4.3.1 2.4.4.1 2.4.4.2 2.4.4.3 2.4.4.4 i. 5.1 3.1 TABLE OF CONTENTS subj ec t INTRODUCTION Purpose of this Specification Hiatoricai Notes Source of the Specification
16、 Material Presented Herein Limitations of Standardization Non-ARINC Applications Constrainta on compendium contents Special Note Concerning Passenger Entertainment and Seivice Multiplex Systems (PAX) DIGITAL SPSTEn EL- CLASSIFICATION Message Related Elements Direction of Information Flov Word/Prame
17、Structure Information Identifier Language Identifier Sign/Status Matrix Data StPndarde Electrically Related Elements Trdssion System Interconnect Modulation Voltage Levels Impedance Levels Logic Related Elements Digital Language Transmission Order Data Bit Encoding Logic Error Detection/Correction T
18、h Related Elements Bit Rate Clocking Method Word/Prama Synchronization Timing Tolerance Digital S-ry WU TO USE THIS WCUMENT Existing systems New System General Serial BCD Word Structure Binary Data Word Structure WordlFrane Structure Type “C“ UordlFrane Structure Type “E“ _ Type B Label/Addresa Code
19、e Twe “C“ Label/Mdresi Code Assigwents (575 DADS) TGe 3“ Data Addresses Data Standards Group B (568) Data Standards Group C (561) Data Crandarda Group D (571) Data Stmdarb Group E (575) Data Standards Group P (579) Data Standarda Group G (582) Data Standards Croup I (585) Voltago Levels Type “A“ Vol
20、tage Levels Type “B“ Voltago Levela Typa “C“ Voltage Levels Type 3 Voltage Levelr Type “E“ Voltage Levels Type “Pi ATC Transponder Wiring Interconnect Input and Output Circuit Standarda Input and Output Circuit Standard. Input and Output Circuit Standarda International Standarda Organisation Code 15
21、 Dita Bit Encoding Logic there are candidate systems which might, tomorrow, upset . any standard that might be adopted today, AEEC must be the judge of when a greater degree of stan- dardization is appropriate. It is with this long history of changing standards in mind that this catalog and comparis
22、on of existing standards for digital transmission systems has been prepared. It has been entitled “Digital Transmis- sion System Compendium“ because it covers the exist- ing ARINC type systems which have been previously specified. This course was chosen to allow future AEEC subcomni ttees the freedo
23、m to select desirable features from the several already existing digital transmission systems standards and to hopefully limit the unproductive proliferation of new digital schemes which defeat the desirable purpose of avi- onic equipment standardization. 1.3 Source of the Specification Material Pre
24、sented The digital transmission system elements that are specified in this document have been gleaned, for the most part, from system previously described In AEEC spec writing projects. This includes projects either completed or now underway. For example, Rerein - ARINC SPECIFICATION 419 - Page 2 1
25、.O INTRODUCTION 1.3 Source of the Specification Material Presented erein - (Contd) An initial effort was made to locate an industry accepted reference or source of digital transmis- sion standards around which tnis AEEC effort could be written. It soon became apparent that no such document exists, t
26、he failing of all candidate docu- ments being overgeneralization. The need which this document fulfills is to provide the specifics of data transmission system descrip- tion. The end result of this endeavor is to ob- viate the use of phrases such as “561 type“ or “575 two-wi re typeg8 when descri bi
27、 nc, d digital transmi s- sion system for a new AEEC project. This document will allow description of a new digital transmis- sion system as per the instructions delineated here- in and identified as a: Type 419 XXX-XXX/ XXXX / XXXX / XXXX“ If a new system under formulation should require descriptio
28、n of some digital characteristic not presently covered by this document, then this docu- ment should be modified to accomnodate the new re- quest. In this manner, it is expected to maintain an MEC digital transmission system “clearing house“ which will allow black box system formulators to have the
29、history of AEEC digital transmission de- velopment readily at hand and further that such formulators will develop a predilection for examin- ing the existing building blocks rather than custom designing new ones. This approach, it is felt, will not unduly stifle technological progress, but may hopef
30、ully curb the proliferation of changes for the sake of “lets do something really new this time.“ 1.4 Limitations of Standardization The selection .of any digital transmission system as “the standard“ cannot solve the problems of organizing todays digitally comnunicating equip- ment into integrated s
31、ystems concepts. This will have to be done as best the system “integrator,“ be he an airframe company man or an airline “retro- fitter“, can devise. Also, as the airlines well know, the application of standards in an area where none existed before is never achieved without cost. In most cases, the c
32、ost will be generation non- interchangeability between equipment employing the old standards and newer equipments which do not. For this reason, manufacturers of avionic equip- ments who are clever enough to devise ways of min- imizing the headaches for which this will be re- sponsible,-will find th
33、eir new products looked upon with favor in the market place, compared to those who are not. - 1.5 Non-ARINC Applications The digital transmission system standards spelled out in this document may be used in applications other than those covered by ARINC Equipment Char- acteristics. Typical examples
34、might include auto- pilots, engine instrumentation, or control and military equipment. If compatibility is to be main- tained with “ARINC Type“ equipment or installations in such applications, the design should follow as closely as possible the standard elements set forth in this document. 1.6 Const
35、raints on Compendl um Contents By action of AEEC at Denver, Spring 1970, this Compendium will contain only the parameters of digital systems used in ARINC spec systems, AEEC recognized the wide variety of digital slg- naling systems used throughout the aviation indus- try but felt it was important t
36、o confine this docu- ment to reasonable size. Therefore, future addi- tions will not be made to this compendium as a consequence of a request from industry: additions will only be made when a new or modified digital system is needed in the opinion of AEEC. 1.7 Soeci al Note Concerning Passenger Ente
37、rtainment and Service flultiplex Systems (PAX) The ARINC specification for the PAX system does not describe the digital transmission system that should be used. ploy digital transmission standards developed by the Society of Automotive Enqineers (SAE) A2-K Subcomnittee. These standards are not cover
38、ed in this Compendium, nor is SAE documentation available from ARINC. Many PAX systems in airline aircraft em- ARINC SPECIFICATION 419 - Page 3 2.0 DIGITAL SYSTEM ELEMENT CLASSIFICATION Genera 1 The elements used to describe a particular digital transmission system (consisting of one data stream onl
39、y) are listed in separate classes. class are listed diffe-nt methods of providing the system element for that class. ments are identified arbitrarily by letters of the alphabet. By identifying the system class and ar- bitrary method of accomplishment. a matrix is pro- vided which enables a digital d
40、atatransmission systm to be completely specified. For mon? ease in specifying classes, a specific (aihitrary) grouping has been developed as follows: bssnqe - related - Under each These different ele- - Electrically related - Logic related Lime related Thus the acronym “MELT“ is obtained for use as
41、a mnemonic device. lhe specification of a particular data transmission system does not specifically re- quire use of the “MELT“ acronym. however, as long as the order of specification classes in this docu- ment is followed with the first classification being specified first and stated in-order readi
42、ng from left to right. T Y - - EL - Sample: The following sections descri be arbitrary grouping of digital transmission system elements. of elements listed includes one or more types of elements identified by a letter of the alphabet. word description of the element type is provided where possible.
43、Where the complexity of the des- cription requires it, a reference is indicated to a more explanatory figure elsewhere in the document. In order to facilitate the use of thir notation, certain letters have been set aside to indicate the fol 1 owing cases : AAB-BAB 1 BABB 1 DBBB / BBBB Each class A S
44、pecification Code 2.0.1 2.1 Not determined yet. An “X“ is to be entered in the matrix at the given position to indi- cate the classification for that element has yet to be determined. I Not controlled. A “Y“ is :c, be eniered in the matrix at the given position to indicate the classification for tha
45、t element is not being control led by specification. i New proposal. the matrix at the given position to indicate the classification for that element is other than “A“ through “Y“. When a new proposai for an element is properly described and subsequently approved, then a 1 etter. next in sequence to
46、 previously approved elements, shall be assigned by AEEC and entered in this document along with its approved description. A “Z“ is to be entered in Message Related Elements ;1 LT This section describes digital system elements which are considered to be mostly related to the message itself or the ma
47、nner in which it is handled. 2.1.1 Direction of Information Flow This is an element which describes the direction of the information flow. informtion that is output from a source by an “an- nouncer.“ The information is conveyed by Beans of a “pipe“ to a “listener.“ there may be multiple “listeners“
48、but never more than one “announcer“ at any given instant of time. The analogy of “master-slave“ was discarded in favor of “announcer-listener“ in order to emphasize the comnuni cations aspect of these digital systems rather than the control aspect. The classification follows: This can be thought of
49、as It is to be expected that ARINC SPECIFICATION 419 - Paqe I 2.0 DIGITAL SYSTEM ELEMENT CLASSIFICATION 2.1.1 Direction of Information Flow (Contd) I Direction of Information Flow 2.1.1 - A - B L C - I Broadcast. This is operation where the de- scribed unit is transmittin output signals (or “announcing“ + on y on t e specified line. Receive. This is operation where the de- scribed unit is receivin in ut signals (or “1 is tening“ onlylddhed 1 i ne. Simplex. This is operation where the de- scribed unit both transmits and receives data on the specified line but not at th
