1、 MARK 3AIRBORNE SELCAL SYSTEMARINC CHARACTERISTIC 714-6PUBLISHED: AUGUST 15, 1990AN DOCUMENTPrepared byAIRLINES ELECTRONIC ENGINEERING COMMITTEEPublished byAERONAUTICAL RADIO, INC.2551 RIVA ROAD, ANNAPOLIS, MARYLAND 21401This document is based on material submitted by various participantsduring the
2、drafting process. Neither AEEC nor ARINC has made anydetermination whether these materials could be subject to claims ofpatent or other proprietary rights by third parties, and norepresentation or warranty, express or implied, is made in this regard. Any use of or reliance on this document shall con
3、stitute an acceptancehereof “as is“ and be subject to this disclaimer.REPLACEMENT PAGE REVISED: November 23, 1992Copyright 1992 byAERONAUTICAL RADIO, INC.2551 Riva RoadAnnapolis, Maryland 21401-7465 USAARINC CHARACTERISTIC 714-6 MARK 3 AIRBORNE SELCAL SYSTEMPublished: August 15, 1990Prepared by the
4、Airlines Electronic Engineering CommitteeCharacteristic 714 Adopted by the Airlines Electronic Engineering Committee: May 5, 1978Characteristic 714 Adopted by the Industry: August 31, 1978Summary of Document SupplementsSupplement Adoption Date PublishedCharacteristic 714-1 August 31, 1979 October 1,
5、 1979Characteristic 714-2 June 19, 1980 July 31, 1980Characteristic 714-3 December 10, 1981 April 15, 1982Characteristic 714-4 September 24, 1982 November 4, 1982Characteristic 714-5 November 4, 1982 December 20, 1982Characteristic 714-6 August 15, 1985 December 13, 1985A description of the changes
6、introduced by each supplement is included on Goldenrod paper at the end of this document.iiFOREWORDActivities of AERONAUTICAL RADIO, INC. (ARINC)and thePurpose of ARINC CharacteristicsAeronautical Radio, Inc., is a corporation in which the United States scheduled airlines are the principalstockholde
7、rs. Other stockholders include a variety of other air transport companies, aircraft manufacturers andforeign flag airlines.Activities of ARINC include the operation of an extensive system of domestic and overseas aeronauticalland radio stations, the fulfillment of systems requirements frequencies to
8、 meet those needs, the coordination incidentto standard airborne communications and electronics systems and the exchange of technical information.ARINC sponsors the Airlines Electronic Engineering Committee (AEEC), composed of airline technical personnel.The AEEC formulates standards for electronic
9、equipment and systems for the airlines. The establishment ofEquipment Characteristics is a principal function of this Committee.An ARINC Equipment Characteristic is finalized after investigation and coordination with the airlines whohave a requirement or anticipate a requirement, with other aircraft
10、 operators, with the Military services havingsimilar requirements, and with the equipment manufacturers. It is released as an ARINC Equipment Characteristiconly when the interested airline companies are in general agreement. Such a release does not commit any airline orARINC to purchase equipment so
11、 described nor does it establish or indicate recognition of the existence of anoperational requirement for such equipment, nor does it constitute endorsement of any manufacturers productdesigned or built to meet the Characteristic.An ARINC Characteristic has a twofold purpose, which is:1) To indicat
12、e to the prospective manufacturers of airline electronic equipment the consideredopinion of the airline technical people coordinated on an industry basis concerning requisites ofnew equipment, and2) To channel new equipment designs in a direction which can result in the maximum possiblestandardizati
13、on of those physical and electrical characteristics which influence interchangeabilityof equipment without seriously hampering engineering initiative.REPLACEMENT PAGE REVISED: December 20, 1982ARINC CHARACTERISTIC 714TABLE OF CONTENTSITEM SUBJECT PAGEiiiPART I SELECTIVE CALLING SYSTEM SPECIFICATION
14、11.0 General Description 11.1 Function 11.2 Components 11.3 Application of Function 12.0 SELECTIVE CALLING TECHNIQUE2.1 General 12.2 Transmitted Code 12.3 Stability 12.4 Distortion 12.5 Percent Modulation 12.6 Received Code 13.0 ASSIGNED CODES 13.1 Transmitted Tones 23.2 Code Assignment Directory 2T
15、able I Table of Tone Frequencies and Derivation of the Frequencies 3Figure 1 Selective Calling Code Makeup 4PART II AIRBORNE SELECTIVE CALLING UNIT 51.0 General Description 51.1 Function 51.2 Components 51.3 Applicable Publications 51.4 Interchangeability 51.4.1 Complete Unit Interchangeability 51.4
16、.2 Generation Interchangeability 51.5 Regulatory Approval 52.0 INTERCHANGEABILITY STANDARDS 52.1 Introduction 52.2 Form Factor and Connector 5-62.3 Interwiring 62.4 Primary Power Input 62.5 System Functions and Signal Characteristics 62.6 Environmental Conditions 62.7 Cooling 62.8 Grounding and Bond
17、ing 63.0 SYSTEM DESIGN CONSIDERATIONS 73.1 SELCAL Operation 73.2 Electrical Requirements 73.2.1 Input Impedance 73.2.2 Tone Code Acceptance 73.2.3 Tone Codes and Selection 73.2.4 Annunciator Light and Chime Signals 73.2.4.1 Operation 73.2.4.2 Switching Circuit Characteristics 7-83.2.4.3 Reset 7a-83.
18、2.5 False Operation 83.2.6 Self Test 83.3 Annunciator Panel 83.4 Remote Code Selection 8REPLACEMENT PAGE REVISED: December 20, 1982TABLE OF CONTENTS (contd)ivTable II Table of Tone Frequencies and Code Selection 9Attachment 1 Interwiring 10Notes Applicable to Interwiring 11Attachment 2 Environmental
19、 Conditions 12Attachment 3 Annunciator Panel - Typical Layout 13Attachment 4 Code Selection Panel - Typical Layouts 14Attachment 5 Typical Annunciator Interwiring 15Attachment 6 Optional Annunciator Interwiring 16Attachment 7 Combination Code Selection/Annunciator Panels 17Attachment 8 SELCAL Unit C
20、onnector Positioning 18PART III GROUND SELECTIVE CALLING UNIT 191.0 General Description 191.1 Function 191.2 Components 191.3 Application to Existing Transmitters 192.0 ELECTRICAL PERFORMANCE REQUIREMENTS 192.1 Frequency Stability 192.2 Tone Amplitude Stability 192.3 Formation of Tone Codes 192.4 En
21、vironmental Conditions 192.5 Tone Frequencies 192.6 Electric Power 193.0 MECHANICAL DESIGN 193.1 Control Panel 19-203.2 Tone Generator, Timer, and Power Supply 20List of Selective Calling Codes 21-30ARINC CHARACTERISTIC 714 - Page 1PART I SELECTIVE CALLING SYSTEM SPECIFICATION1.0 GENERAL DESCRIPTION
22、1.1 FunctionPart I of this Characteristic covers the systemrequirements for a ground-to-air Selective Calling System.The purpose of the system is to permit the selectivecalling of individual aircraft over normal radiocommunications circuits linking the ground station withthe aircraft. For convenienc
23、e this system is referred to asthe “SELCAL” System.1.2 ComponentsThe elements comprising the overall system are asfollows:(a) Ground Selective Calling Unit (Coder)(b) Ground-to-air transmitter, HF or VHF(c) Airborne receiver, HF or VHF(d) Airborne Selective Calling Unit (Decoder)(e) Annunciator Pane
24、l(f) Code Selection PanelItems (b) and (c) form the normal communications link.Item (a) is the ground portion of the coding device (seePart III of this Characteristic) which supplies codedinformation to the ground-to-air transmitter, Item (b).Item (d) is the special airborne equipment which isoperat
25、ing with existing communications receivers on theaircraft, Item (c), to permit decoding of the ground-to-airsignals for display on the annunciator panel (e). The typeof annunciator panel (e) should be chosen to suit theoperational requirements of the user and may contain thenecessary visual and/or a
26、udible annunciating devices. Theelectronic circuitry to activate these devices should becontained in the decoder unit (d). The code selectionpanel (f) should be chosen to suit the operationalrequirements of the user and contain either switches orjumper wiring.1.3 Application of FunctionThe selective
27、 calling system should be capable ofoperation with existing ground-to-air communicationstransmitters and receivers, working on A3A or 2AH/A3Hmodes. The normal functioning of the ground-to-aircommunications link should in no way be affected exceptat such time as the selective calling system is perfor
28、mingthe calling function.2.0 SELECTIVE CALLING TECHNIQUE2.1 GeneralSelective calling is accomplished by the coder of theground transmitter sending coded tone pulses to theaircraft receiver and decoder. Each transmitted code ismade up of two consecutive tone pulses, with each pulsecontaining two simu
29、ltaneously-transmitted tones.2.2 Transmitted CodeWhen the ground operator desires to call a particularaircraft, he depresses the buttons corresponding to thecode assigned to that aircraft. The coder then keys thetransmitter on the air causing to be transmitted twoconsecutive tone pulses of 1.0 0.25
30、sec. duration,separated by an interval of 0.2 0.1 sec. which makes upthe code. Each tone pulse consists of two simultaneously-transmitted tones. The call should consist of onetransmitted code without repetition. Diagram of thetransmitted code is shown in Figure 1 of this Part.2.3 StabilityThe freque
31、ncy of transmitted tones should be held to0.15% tolerance to insure proper operation of theairborne decoder.2.4 DistortionOverall audio distortion present on the transmitted r-fsignal should not exceed 15%.2.5 Percent ModulationThe r-f signals transmitted by the ground radio stationshould contain wi
32、thin 3 dB of equal amounts of the twomodulating tones. The combination of tones should resultin a modulation envelope having a nominal modulationpercentage of 90% and in no case less than 60%.COMMENTARYThe foregoing specification of nominal and mini-mum modulation level is understood to apply only t
33、oAM double sideband. For full carrier SSB, thecarrier should be transmitted at a constant level, notmore than 6 dB below PEP and the sideband peaksshould be equal to the level of the carrier.2.6 Received CodeThe airborne receiver and decoder equipment should becapable of receiving and interpreting b
34、y means of theindicator the correct code and rejecting all other codes inthe presence of random noises and interference. Thesystem should be capable of positive calling better thanvoice intelligibility under all conditions. A positivecalling should shall be presented to the flight crew bymeans of a
35、suitable aural or visual signaling device suchas a chime or lamp.3.0 ASSIGNED CODESCodes should be assigned to user aircraft on a directorybasis. This assignment will normally be made byassigning individual codes or blocks of codes to air carrierorganizations as requested with the maximumconsiderati
36、on being given to providing the minimumduplication of codes to aircraft which will operate in thesame areas.REPLACEMENT PAGE REVISED: December 20, 1982ARINC CHARACTERISTIC 714 - Page 2PART I SELECTIVE CALLING SYSTEM SPECIFICATION (contd)3.1 Transmitted TonesTone codes are made up of various combinat
37、ions of thefollowing tones and are designated by letter as indicated:Note: The tones are spaced by log -1 0.045(approximately 10.9%)Designation Frequency (Hz)A 312.6B 346.7C 384.6D 426.6E 473.2F 524.8G 582.1H 645.7J 716.1K 794.3L 881.0M 977.2P 1083.9Q 1202.3R 1333.5S 1479.13.2 Code Assignment Direct
38、oryCodes available for assignment are listed in Part IV.-5REPLACEMENT PAGE REVISED: December 20, 1982ARINC CHARACTERISTIC 714 - Page 3TABLE ITable of Tone FrequenciesandDerivation of the Frequenciesf N = log -1 / 0.045 (N-1) + 2.00/. For the first tone, N=12, second N=13, etc.Designation Log Frequen
39、cy (Hz)A 2.495 312.6B 2.540 346.7C 2.585 384.6D 2.630 426.6E 2.675 473.2F 2.720 524.8G 2.765 582.1H 2.810 645.7J 2.855 716.1K 2.900 794.3L 2.945 881.0M 2.990 977.2P 3.035 1083.9Q 3.080 1202.3R 3.125 1333.5S 3.170 1479.1-5ARINC CHARACTERISTIC 714 - Page 4FIGURE 1SELECTIVE CALLING CODE MAKEUP0.2 0.1 s
40、ec.Pulse No. 11 0.25 sec.Tone CPulse No. 21 0.25 sec.Tone BTone DTimeTone AREPLACEMENT PAGEARINC CHARACTERISTIC 714 - Page 5PART II AIRBORNE SELECTIVE CALLING UNIT1.0 GENERAL DESCRIPTION1.1 FunctionThis Characteristic covers the requirements of anAirborne equipment capable of actuating a visual and/
41、oraural alerting device in the cockpit of an aircraft, whenused in conjunction with HF and VHF receivingequipment, providing coded audio frequency signals froman aeronautical ground radio station. For convenience,the unit is referred to as the “SELCAL” Unit.1.2 ComponentsThe complete airborne select
42、ive calling system willconsist of the following components:(a) ARINC Characteristic No. 533A/559A/719,“Airborne HF SSB/AM System” and/or(b) ARINC Characteristic No. 546/566 or 566A/716,“VHF Communication System”(c) ARINC Characteristic No. 714, “Airborne SelectiveCalling Unit”.1.3 Applicable Publica
43、tionsThe following publications will be of interest and ofimportance to manufacturers planning to develop equip-ment to meet this Characteristic:(a) ARINC Specification 600, “Air Transport AvionicsEquipment Interfaces Cases and Racking”.(b) ARINC Report 413A, “G uidance for AircraftElectrical Power
44、Utilization and TransientProtection”.(c) ARINC Report 403/414, “General Guidance forEquipment and Installation Designers”.(d) RTCA Paper Document DO-160/EUROCAE ED-14,“Environmental Conditions and Test Procedures -Airborne Electronic/Electrical Equipment andInstruments”1.4 Interchangeability1.4.1 Co
45、mplete unit interchangeability, as defined inSection 2.0 of ARINC Report 403, “Guidance forDesigners of Airborne Electronic Equipment”, is desiredfor the SELCAL System. The standards necessary toensure this level of interchangeability are set forth inSection 2 of this Characteristic.1.4.2 Generation
46、 InterchangeabilitySELCAL equipment built to this Characteristic is notinterchangeable with equipment built to ARINC 531, orARINC 596.COMMENTARYThis equipment is electrically and functionally areplacement for the ARINC 596 repackaged in anARINC 600 1MCU unit.1.5 Regulatory ApprovalThe equipment shou
47、ld meet all applicable FAA regulatoryrequirements. This Characteristic does not and cannot setforth the specific requirements that an equipment mustmeet to be assured of FAA approval. Such informationmust be obtained from the FAA itself.2.0 INTERCHANGEABILITY STANDARDS2.1 IntroductionThis section of
48、 this Characteristic sets forth the specificform factor, mounting provisions, interwiring, input andoutput interfaces and power supply characteristics desiredfor the SELCAL System. These standards permit theparallel but independent design of compatible equipmentand airframe installations.Manufacture
49、rs should not that although this Characteristicdoes not preclude the use of standards different fromthose set forth herein, the practical problems ofredesigning a standard airframe installation toaccommodate a special equipment could very well makethe use of that equipment prohibitively expensive for thecustomer. They should recognize, therefore, the practicaladvantages of developing equipment in accordance withthe standards set forth in this document.2.2 Form Factor and ConnectorThe SELCAL unit should comply with the dimensionalstandards in ARINC Specification 600,
