1、ATEST EQUIPMENT GUIDANCE (TEG)ARINC REPORT 602A-2PUBLISHED: FEBRUARY 1, 1996AN A DOCUMENTPrepared byAIRLINES ELECTRONIC ENGINEERING COMMITTEEPublished byAERONAUTICAL RADIO, INC.2551 RIVA ROAD, ANNAPOLIS, MARYLAND 21401Copyright 1996 byAERONAUTICAL RADIO, INC.2551 Riva RoadAnnapolis, Maryland 21401-7
2、465 USAARINC REPORT 602A TEST EQUIPMENT GUIDANCE (TEG)Published: February 1, 1996Prepared by the Airlines Elect ronic Engineering CommitteeReport 602A Adopted by the Airlines Electronic Engineering Committee: October 11, 1984Report 602A-1 Adopted by the Airlines Electronic Engineering Committee: Nov
3、ember 6, 1985Report 602A-2 Adopted by the Airlines Electronic Engineering Committee: January 22, 1996iiFOREWORDActivities of AERONAUTICAL RADIO, INC. (ARINC)and thePurpose of ARINC Reports and SpecificationsAeronautical Radio, Inc. is a corporation in which the United States scheduled airlines are t
4、he principalstockholders. Other stockholders include a variety of other air transport companies, aircraft manufacturers and non-U.S.airlines.Activities of ARINC include the operation of an extensive system of domestic and overseas aeronautical landradio stations, the fulfillment of systems requireme
5、nts to accomplish ground and airborne compatibility, the allocationand assignment of frequencies to meet those needs, the coordination incident to standard airborne compatibility, theallocation and assignment of frequencies to meet those needs, the coordination incident to standard airbornecommunica
6、tions and electronics systems and the exchange of technical information. ARINC sponsors the AirlinesElectronic Engineering Committee (AEEC), composed of airline technical personnel. The AEEC formulates standardsfor electronic equipment and systems for the airlines. The establishment of Equipment Cha
7、racteristics is a principalfunction of this Committee.It is desirable to reference certain general ARINC Specifications or Report which are applicable to more thanone type of equipment. These general Specifications and Reports may be considered as supplementary to the EquipmentCharacteristics in whi
8、ch they are referenced. They are finalized after investigation and coordination with airlines, withother aircraft operators, with the Military services and with other interested persons. Publication of a Report,Specification or Equipment Characteristic should not be construed to obligate ARINC or an
9、y airline insofar as thepurchase of any components or equipment is concerned. Further, the publication of a Report, Specification or EquipmentCharacteristic does not imply its endorsement by the U.S. Federal Government or any of its agencies whoserepresentatives may have participated in its preparat
10、ion.An ARINC Report ( Specification or Characteristic) has a twofold purpose, which is:(1) To indicate to the prospective manufacturers of airline electronic equipment the considered opinion ofthe airline technical people coordinated on an industry basis, concerning requisites of new equipment,and(2
11、) To channel new equipment designs in a direction which can result in the maximum possiblestandardization of those physical and electrical characteristics which influence interchangeability ofequipment without seriously hampering engineering initiative.iiiARINC REPORT 602ATABLE OF CONTENTSITEM SUBJE
12、CT PAGE1.0 INTRODUCTION 12.0 OBJECTIVES AND SCOPE 22.1 Objectives 22.2 Scope 23.0 DOCUMENTATION 33.1 General 33.2 Instrumentation Manual Concepts 33.2.1 Calibration/No-Calibration Required Decision 33.2.2 Periodic Calibration Verification 33.2.3 Tables and Procedures 33.2.4 Illustrated Parts Lists 3
13、3.3 Specification/Calibration Traceability 44.0 TEST EQUIPMENT CLASSIFICATION 54.1 General 54.2 Categories of Test Equipment 54.3 Location 54.3.1 Shop 54.3.2 Flight Line 54.3.2.1 General Design 54.3.2.2 Power Cords 54.3.2.3 Testing Environment 54.3.2.4 Government Regulations 54.4 Level 64.4.1 SYSTEM
14、S 64.4.2 IRU 64.4.3 Card/Assembly 64.4.3.1 Analog Card Testing 64.4.3.2 Digital Card Testing 64.5 Application 74.5.1 Dedicated 74.5.2 Multi-System 74.5.3 General Purpose 74.6 Categories of Control/Interface 74.6.1 Manual 74.6.1.1 Capabilities 74.6.1.2 Function Identification 74.6.2 Semi-Automatic 74
15、.6.3 Dedicated Automatic Testers 74.7 Wrap-Around Testers 75.0 TEST RESOURCE REQUIREMENTS 85.1 General 85.2 Avionics Test Resource Requirements 85.3 Uses of Test Resource Documents 85.4 LRU/UUT Interface Signal Requirements (ISR) 85.5 Minimum Use Specifications (MUS) 86.0 TEST EQUIPMENT APPLICATION
16、SOFTWARE 96.1 General 96.2 Program Structure 96.3 Verification 96.4 Program Software 96.5 Program Documentation 96.6 Software Rights 96.7 Software Maintenance 97.0 UUT TEST SOFTWARE 107.1 General 107.2 Resident Software and Software in a Memory Extension 107.3 Communication with the Test Equipment 1
17、0ivARINC REPORT 602ATABLE OF CONTENTSITEM SUBJECT PAGE7.4 Program 107.5 Documentation 107.6 Software Responsibilities 107.7 Software Maintenance 108.0 TESTER DESIGN 118.1 Shop Test Equipment 118.2 Flight Line Test Equipment 118.3 Environmental Testing 118.4 Maintainability 118.5 Component Identifica
18、tion 118.6 Standard Components 118.7 Grounds and Shields 118.8 Integrated Design 118.9 Test Points 118.10 Primary Electric Power 129.0 OPERATION OF TEST EQUIPMENT 139.1 Operation 139.2 Operator Interface 139.3 Recording of Test Results 139.4 Safety Checklist 1310.0 UUT POWER REQUIREMENTS 1410.1 UUT
19、Power 1410.2 Manual Testers 1410.3 ATE 1411.0 COOLING OF EQUIPMENT UNDER TEST 1511.1 Cooling 1511.2 Noise Level 1512.0 MAINTENANCE USE OF BITE 1612.1 Built-In Test Equipment 16ATTACHMENTS1 Definitions/Abbreviations 172 No Calibration Required Decision Guide 183 Interface Signal Requirements (ISR) 19
20、3A ISR Example 204 Minimum Use Specification (MUS) 214A MUS Example 22ARINC REPORT 602A Page 11.0 INTRODUCTIONThis document is intended to convey a simple message tothe manufacturers of avionics equipment and avionicstest equipment. That message is that through the yearsmany of the customers needs h
21、ave not been met by thetest equipment hardware and documentation.Many of the items in this document reflect the collectiveexperience of numerous airlines (and other users) overmany years and, therefore, should not be taken lightly.Some items have been added to include the impact ofnew technology.It
22、is not intended that this document provide the elementsof a “form, fit, and function” specification. Its purpose isto be a guideline to the kind of test equipment and testcapability the airlines collectively believe they need. Thepast experience of many users has been that most of theavailable test
23、equipment was too expensive, with little orno commonality (hardware or software). This resulted intoo much unique test equipment, with limitedapplicability, much higher acquisition and operating cost,and costly early obsolescence.It is recognized that negative generalizations serve nouseful purpose
24、unless they are accompanied by positiveguidance. Therefore, this document is an industry effortat giving guidance in areas where standardization willbenefit all concerned. It is not an effort to definestandard testers.ARINC REPORT 602A Page 22.0 OBJECTIVES AND SCOPE2.1 ObjectivesThis document define
25、s the users needs and desiresregarding essential attributes of the test equipment to beused for maintenance and troubleshooting of air transportavionics.COMMENTARYThis document is prompted both by the need for testequipment to be cost effective and by the need toaccommodate the increasing number of
26、digitaldesign black boxes in the maintenance functions.This proliferation of digital equipment has requiredthe acquisition of additional, and usually costly, testequipment beyond that required for servicing andmaintaining prior generations of analog equipment.Despite the added complexities, most air
27、lines donot wish to surrender the maintenance to suppliersof the equipment, or to other organizations outsideof the administrative control.2.2 ScopeThis document describes, in general terms, the hardwareand software needed to test and troubleshoot avionicequipment. This avionic equipment includes th
28、e linereplaceable units (LRUs) and LRU subassemblies in theshop, plus the “ramp” equipment needed to identify thespecific failed LRU on the flight line.ARINC REPORT 602A Page 33.0 DOCUMENTATION3.1 GeneralTest equipment manuals should be divided into sections,with each section useable for either ramp
29、 or shopapplication, regardless of whether the test equipment isautomatic or manual. The complexity of manuals willaccordingly change with the complexity of the applicabletest equipment.It should be recognized that test equipment may requireperiodic recalibration under regulatory control.Consequentl
30、y, a unique calibration verification section maybe required in the manual (see 3.3 below). Automatic TestSystems consisting of multiple units may be complex andrequire special consideration and attention. Identification ofperformance specifications at the UUT interface should beincluded in the manua
31、l. A few examples are:A. Definition of expected composite performance andspecifications resulting from multiple test equipmentunits interacting with each other.B. Definition of specifications at three levels:1. At subunit terminals or interface2. At universal interface terminals or interface3. At UU
32、T terminals or interface, such as at a TUA(this may be in the specification for the TUA or theUUT interface adaptor).C. Changes to system performance specifications causedby hardware/software enhancement or degradationwhen using UUT interface adapters (Interconnect Units,vendor modules, etc.). These
33、 changes should bethoroughly documented in appropriate instructionmanuals.D. Identification of those subunits of the system which areindependent of system performance (these are subunitswhich may be recalibrated or replaced independently ofsystem recalibration).Test equipment manuals should be well-
34、indexed andpartitioned into user and maintenance sections as required.Revision control should be maintained with the manual.Documentation for test equipment should be in accordancewith ATA Specification 101/102, with format conforming,in general to ATA Specification 10(see 3.2 below).3.2 Instruction
35、 Manual ContentsThe general format for instruction manuals for testequipment should be similar to Avionics ComponentMaintenance Manuals (CMM) for ease of use andfamiliarity (see ATA Specification 100).All manuals for shop or ramp test equipment should contain,as a minimum:A. IndexB. Functional and P
36、erformance SpecificationsC. Functional Description and Theory of OperationD. Installation and Operation InstructionsE. Calibration Verification Procedures (see 3.2.1 and3.2.2)F. Fault Analysis, Troubleshooting, Repair and AlignmentTables and Procedures (see 3.2.3)G. Illustrated Parts Lists (see 3.2.
37、4)H. SchematicsI. Software DescriptionJ. Firmware Description3.2.1 Calibration/No-Calibration Required DecisionAn instrument should be classified as No-CalibrationRequired (NCR) if it meets the criteria of the guide providedin Attachment 2.3.2.2 Periodic Calibration VerificationWhen calibration is n
38、ecessary, as determined by thecalibration/no-calibration required decision (3.2.1), theinstruction manual should contain sufficient information toverify calibration. This information should also be useablein new unit performance tests and should contain, as aminimum:A. Calibration Specification Tabl
39、e, listing parametercharacteristics and describing how tested.B. Supporting Equipment Table, listing minimum-use-specifications of measurement standards and supporttest equipment (with representative type of equipment,by manufacturer/model, whose published specificationsare applicable).C. Preliminar
40、y and Functional Tests, in numbered/narrative step-by-step format.D. Detailed Numbered/Narrative Step-by-Step calibrationProcedure, including test set-up diagrams, checklists,and data sheets with tolerance limits keyed to 3.2.2Aabove.3.2.3 Tables and ProceduresFault analysis, troubleshooting, repair
41、 and alignment mayrequire certain tables and procedures (see 3.2.F). Whenrequired, these tables and procedures should be innumbered/narrative step-by-step format, including layoutdrawings, parts location aids, schematics, waveform/timingdiagrams, signature analysis codes, etc.3.2.4 Illustrated Parts
42、 ListsIllustrated parts lists should be included in all manuals (see3.2.G). These lists should contain circuit designators, completegeneric descriptions, test equipment manufacturers partnumbers, and part manufacturers part numbers .-2ARINC REPORT 602A Page 43.0 DOCUMENTATION (contd)3.3 Specificatio
43、n/Calibration TraceabilityCalibration of certain test equipment is under regulatorycontrol, depending upon the regulations and laws applicableto the operation and maintenance of the aircraft. In thosecases where national or international laws or regulationsrequire calibration or test equipment, trac
44、eability of suchcalibration is normally also required.Specifics relating to the form and contents of documentationnecessary to provide traceability may vary according to thetype and application of the test equipment, or according tospecific arrangements between the manufacturer and user.Calibration
45、information delivered with new test equipmentshould be in such format and contain sufficient calibrationand documentation instructions to comply with appropriateinternational, national, or local regulatory body require-ments.Calibration instructions should be in sufficient detail toensure that prope
46、r calibration can be performed by the useror other approved calibration facility.Documentation necessary to comply with regulatoryrequirements should be provided with the test equipment,and should be in such a format that traceability of calibrationis ensured.COMMENTARYMany users desire to repair an
47、d calibrate testequipment within their own facilities. Necessaryinformation should be supplied with the testequipment to insure that this can be done properly.This calibration/repair information should includespecifications, as necessary, for subassemblies notbuilt by the major test equipment manufa
48、cturer, butincluded as a part of the test equipment.REVISED: February 1, 1996ARINC REPORT 602A Page 54.0 TEST EQUIPMENT CLASSIFICATION*4.1 GeneralThe term “avionics test equipment,” as used in thisdocument, describes the equipment necessary formaintenance and troubleshooting of avionics units/system
49、s.This test equipment can be classified into overlappingcategories according to the desired application. The user hascertain constraints, such as anticipated work flow, initialinvestment, training/competency level of maintenancepersonnel, nature of their aircraft fleet, complexity ofavionics, and maintenance history of avionics. Theseconstraints play an important role in determining a cost-effective mix of avionics test equipment for the user. Onlythe user can determine the proper mix for his particularoperation. However, this document outlines the basicgroupings of such test
