ARINC 615A-2002協(xié)議完整版本

CopyrightAeronauticalRadioInc.ProvidedbyIHSunderlicensewithARINC

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SOFTWAREDATALOADERUSINGETHERNETINTERFACE

ARINCREPORT615A-2

PUBLISHED:MAY10,2002

AN A DOCUMENT

Preparedby

AIRLINESELECTRONICENGINEERINGCOMMITTEE

PublishedbyAERONAUTICALRADIO,INC.

2551RIVAROAD,ANNAPOLIS,MARYLAND21401

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Thisdocumentisbasedonmaterialsubmittedbyvariousparticipantsduringthedraftingprocess.NeitherAEECnorARINChasmadeanydeterminationwhetherthesematerialscouldbesubjecttovalidclaimsofpatent,copyrightorotherproprietaryrightsbythirdparties,andnorepresentationorwarranty,expressedorimpliedismadeinthisregard.Anyuseoforrelianceonthisdocumentshallconstituteanacceptancethereof“asis”andbesubjecttothisdisclaimer.

Copyright?2001byAERONAUTICALRADIO,INC.

2551RivaRoad

Annapolis,Maryland21401-7465USA

ARINCREPORT615A-2?

SOFTWAREDATALOADERUSINGETHERNETINTERFACES

Published:May10,2002

PreparedbytheAirlinesElectronicEngineeringCommittee

Report615A

AdoptedbytheAirlinesElectronicEngineeringCommittee:

September22,1999

Report615A

AdoptedbytheIndustry:

November24,1999

SummaryofDocumentSupplements

Supplement

AdoptionDate

Published

Report615A-1

November14,2000

January12,2001

Report615A-2

April8,2002

May10,2002

AdescriptionofthechangesintroducedbyeachSupplementisincludedongoldenrodpaperattheendofthisdocument.

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FOREWORD

ActivitiesofAERONAUTICALRADIO,INC.(ARINC)

andthe

PurposeofARINCReportsandSpecifications

AeronauticalRadio,Inc.isacorporationinwhichtheUnitedStatesscheduledairlinesaretheprincipalstockholders.Otherstockholdersincludeavarietyofotherairtransportcompanies,aircraftmanufacturersandnon-U.S.airlines.

ActivitiesofARINCincludetheoperationofanextensivesystemofdomesticandoverseasaeronauticallandradiostations,thefulfillmentofsystemsrequirementstoaccomplishgroundandairbornecompatibility,theallocationandassignmentoffrequenciestomeetthoseneeds,thecoordinationincidenttostandardairbornecommunicationsandelectronicssystemsandtheexchangeoftechnicalinformation.ARINCsponsorstheAirlinesElectronicEngineeringCommittee(AEEC),composedofairlinetechnicalpersonnel.TheAEECformulatesstandardsforelectronicequipmentandsystemsfortheairlines.TheestablishmentofEquipmentCharacteristicsisaprincipalfunctionofthisCommittee.

ItisdesirabletoreferencecertaingeneralARINCSpecificationsorReportwhichareapplicabletomorethanonetypeofequipment.ThesegeneralSpecificationsandReportsmaybeconsideredassupplementarytotheEquipmentCharacteristicsinwhichtheyarereferenced.Theyareintendedtosetforththedesiresoftheairlinespertainingtocomponentsandgeneraldesign,constructionandtestcriteria,inordertoinsuresatisfactoryoperationandthenecessaryinterchangeabilityinairlineservice.ThereleaseofaSpecificationorEquipmentCharacteristicsshouldnotbeconstruedtoobligateARINCoranyairlineinsofarasthepurchaseofanycomponentsorequipmentisconcerned.

AnARINCReport(SpecificationorCharacteristic)hasatwofoldpurpose,whichis:

Toindicatetotheprospectivemanufacturersofairlineelectronicequipmenttheconsideredopinionoftheairlinetechnicalpeople,coordinatedonanindustrybasis,concerningrequisitesofnewequipment,and

Tochannelnewequipmentdesignsinadirectionwhichcanresultinthemaximumpossiblestandardizationofthosephysicalandelectricalcharacteristicswhichinfluenceinterchangeabilityofequipmentwithoutseriouslyhamperingengineeringinitiative.

ii

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ARINCREPORT615ATABLEOFCONTENTS

SUBJECT

ITEM

PAGE

CopyrightAeronauticalRadioInc.ProvidedbyIHSunderlicensewithARINC

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INTRODUCTION 1

PurposeofThisReport 1

DocumentConventions 1

FunctionoftheEquipment 1

UnitDescription 1

PDLDescription 1

ADLDescription 1

Interchangeability 2

MediaInterchangeability 2

UnitInterchangeability 2

Interoperability 2

Reliability 2

Maintainability 2

RegulatoryApproval 2

RelatedDocuments 2

INTERCHANGEABILITYSTANDARDS 3

Introduction 3

FormFactorandConnectors 3

PhysicalSize 3

PDLPhysicalSize 3

ADLPhysicalSize 3

DataLoaderWeight 3

PDLWeight 3

ADLWeight 3

ControlsandIndicators 3

PDLControlsandIndicators 3

ADLAnnunciatorLights 3

Drive/InterfaceMechanisms 3

Connector 3

PDLConnector 3

ADLConnector 3

DataBusInterface 4

PowerCircuitry 4

PrimaryPowerInput 4

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PDLPrimaryPowerInput 4

ADLPrimaryPowerInput 4

PowerControlCircuitry 4

InternalCircuitProtection 4

PDLInternalCircuitProtection 4

ADLInternalCircuitProtection 4

EnvironmentalConditions 4

Temperature 5

PDLTemperature 5

ADLTemperature 5

Pressure 5

Rain 5

SolventResistance 5

Vibration 5

Shock/Handling 5

PDLShock/Handling 5

ADLShock/Handling 5

ElectromagneticCompatibility 5

PDLElectromagneticCompatibility 5

ADLElectromagneticCompatibility 6

Dust 6

ExplosiveAtmosphere 6

FungusResistance 6

Grounding 6

UNITDESIGN 7

Introduction 7

Controls 7

MediaEjector 7

SelectorControls 7

iii

3.3

Indicators/Displays

7

3.4

LegendsandInstructions

7

3.5

Self-LoadCapability

8

3.5.1

EquipmentDataBase

8

3.5.2

OperationalSoftware

8

3.6

SpecialPhysicalProvisions

8

3.6.1

MediaAccessOpening

8

3.6.2

CableSizeandTerminations

8

3.6.3

InternalHeater

8

3.7

Testing

8

3.7.1

AutonomousSelf-Test

8

3.7.2

MaintenanceDiagnosticTest

8

4.0

SOFTWARETRANSPORTMEDIATYPE

9

4.1

MediaInterchangeability

9

4.1.1

3.5InchFloppyDisk

9

DriveMechanism

9

PhysicalFormat

9

LogicalFormat

9

4.1.2

PCCardDevice

9

PCCardInterface

9

LogicalFormat

9

4.1.3

OpticalDisk

10

DriveMechanism

10

PhysicalFormat

10

LogicalFormat

10

DiscReplication

10

5.0

LOADPROTOCOL

11

5.1

Introduction

11

5.2

Scope

11

5.3

ARINC615ADataLoadingArchitecture

11

5.3.1

GeneralDescription

11

5.3.2

TFTPProtocol

11

TFTPReferenceDocuments

12

TFTPOptions

12

.1

Blocksize

12

.2

TransferSizeoftheFile

12

.3

TimeoutInterval

12

TFTPAdaptationtoDataLoadingProtocol

12

.1

TFTPSuper-set

12

.2

DedicatedPortNumber

12

.3

ErrorMessageGeneralDescription

12

.4

DefinitionoftheWaitingMessage

13

.5

UtilizationoftheWaitingMessage

13

.6

DefinitionoftheAbortMessage

13

.7

UtilizationoftheAbortMessage

13

.8

TFTPOptionImplementation

14

.8.1

BlocksizeOptionImplementation

14

.8.2

FileTransferSize

14

.8.3

TimeoutInterval

14

.9

TFTPBlockNumber

14

.10

FileTransferSize

14

.11

TimeoutInterval

14

5.4

Operations

14

5.4.1

Introduction

14

5.4.2

“InformationOperation”

15

5.4.3

“UploadingOperation”

15

5.4.4

“DownLoadOperation”

15

MediaDefinedDownloadMode

16

OperatorDefinedDownloadMode

16

5.4.5

CommonServices

16

AddressesandDataLoadableEquipmentRecovery

16

StatusMessages

16

TransferInterruptions

16

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iv

6.0 LOADPROTOCOLDEFINITION 18

6.1 SummaryofMessages 18

6.2 DescriptionofMessages 19

6.2.1 [TH_Information_Initialization]Message 19

WhenGenerated 19

EffectonReceipt 19

ProtocolFileUsed 19

6.2.2 [Information_Initialization_Response]Message 19

WhenGenerated 19

EffectonReceipt 19

ProtocolFileUsed 19

6.2.3 [TH_Information]Message 19

WhenGenerated 19

EffectonReceipt 19

ProtocolFileUsed 19

6.2.4 [Information_Status]Message 19

WhenGenerated 19

EffectonReceipt 19

ProtocolFileUsed 19

6.2.5 [TH_Uploading_Initialization]Message 19

WhenGenerated 19

EffectonReceipt 19

ProtocolFileUsed 19

6.2.6 [Uploading_Initialization_Response]Message 19

WhenGenerated 19

EffectonReceipt 19

ProtocolFileUsed 19

6.2.7 [Load_List]Message 20

WhenGenerated 20

EffectonReceipt 20

ProtocolFileUsed 20

6.2.8 [File_Not_Available]Message 20

WhenGenerated 20

EffectonReceipt 20

ProtocolFileUsed 20

6.2.9 [Upload_Information_Status]Message 20

WhenGenerated 20

EffectonReceipt 20

ProtocolFileUsed 20

6.2.10 [Downloading_Disk_Initialization]Message 20

WhenGenerated 20

EffectonReceipt 20

ProtocolFileUsed 20

6.2.11 [Downloading_Initialization_Response]Message 20

WhenGenerated 20

EffectonReceipt 20

ProtocolFileUsed 20

6.2.12 [Downloading_File_Receipt]Message 20

WhenGenerated 20

EffectonReceipt 20

ProtocolFileUsed 20

6.2.13 [Downloading_Information_Status]Message 20

WhenGenerated 20

EffectonReceipt 21

ProtocolFileUsed 21

6.2.14 [Downloading_Operator_Initialization]Message 21

WhenGenerated 21

EffectonReceipt 21

ProtocolFileUsed 21

6.2.15 [Downloading_File_ListReceipt]Message 21

WhenGenerated 21

EffectonReceipt 21

ProtocolFileUsed 21

6.2.16 [File_Selection]Message 21

WhenGenerated 21

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EffectonReceipt 21

ProtocolFileUsed 21

6.2.17 [Abort_Request]Message 21

WhenGenerated 21

EffectonReceipt 21

ProtocolFileUsed 21

6.3 MessageSequenceChart 22

6.3.1 Information/Uploading/DownloadingOperation:SummaryDescription 22

6.3.2 InformationOperation:InitializationandTransferStep 23

6.3.3 UploadingOperation:Initialization,ListTransferandTransfer 25

6.3.4 DownloadingOperationinMediaDefinedMode:Initialization,List

TransferandTransfer 28

6.3.5 DownloadingOperationinOperatorDefinedMode:Initialization,List

TransferandTransfer 30

6.3.6

InterruptionService

32

6.4

ProtocolFileDescription

34

6.4.1

<THW_ID_POS>.LCI,.LUI,.LNDand.LNO

35

6.4.2

<THW_ID_POS>.LCL

36

6.4.3

<THW_ID_POS>.LCS

37

6.4.4

<THW_ID_POS>.LUR

38

6.4.5

<THW_ID_POS>.LUS

39

6.4.6

<THW_ID_POS>.LNR

41

6.4.7

<THW_ID_POS>.LNS

41

6.4.8

<THW_ID_POS>.LNL

43

6.4.9

<THW_ID_POS>.LNA

43

6.4.10

DataLoadStatusCodeTable

44

ATTACHMENTS

1

ARINC615AADLANDPDLCONNECTORSIGNALASSIGNMENTS

45

2

LOADSCENARIOS

47

3

FINDIDENTIFICATIONOFNETWORKDEVICES(FIND)PROTOCOL

55

4

TIME-OUTANDRETRYNUMBERDEFINITION

57

5

ENVIRONMENTALTESTCATEGORIES

65

APPENDIX

A

HUMANINTERFACEGUIDELINES

66

B

REFERENCEGUIDE

68

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ARINCREPORT615A-Page1

INTRODUCTION

PurposeofthisReport

Thisdocumentprovidesgeneralandspecificdesignguidanceforthedevelopmentofsoftwaredataloadingequipmentforalltypesofaircraft.ItdefinesaPortableDataLoader(PDL)forcarry-onapplicationsandanAirborneDataLoader(ADL)forinstallationontheairplane.Theprimaryfunctionofthedataloaderisuploadingdataandoperationalsoftwareprogramstoairbornecomputers.Asecondaryfunctionofthedataloaderisdownloadingdatafromairbornecomputers.Thisdocumentdescribesthedesiredcapabilityofdataloadingequipmentandthestandardsnecessarytoensureinterchangeabilityofthestandardizedmassstoragemedium.FormandfitinterchangeabilityisspecifiedandexpectedfortheADL,butnotspecifiedforthePDL.

Thisdocumentdefinesdataloadersdesignedtoloadnewgenerationavionicsequipmentoverahigh-speedinterface.Avionicsequipment,whichisloadableovertheARINC429databus,willcontinuetobeloadedbydataloadersdefinedbyARINCReport615.However,theARINCReport615Adefinitionshouldnotprecludethecombinationofbothdataloadingtypesinonephysicaldataloadershouldthemarketdesiresuchadataloader.

Equipmentmanufacturersshouldnotethatthisdocumentaimstoencouragethemtoproducemaintenance-freehighperformanceequipmentratherthanthatofminimumweightanddimension.Theyareatlibertytoaccomplishthisobjectivebymeansofdesigntechniquestheyconsidertobethemostappropriate,astheircustomersareinterestedprimarilyintheendresultratherthanthemeansemployedtoachieveit.

DocumentConventions

ARINCdocumentsarevoluntarystandardsintendedtoensureinteroperabilityofequipmentindependentofthemanufacturerortheairframeinstallation.Somedataloaderfunctionsdefinedinthisdocumentmustbeimplementedinordertomeetaminimumlevelofcompatibilitybetweenloaders(andothertools)designedtothisstandard,loadablesoftwaredesignedtothisstandard,andsoftwaretransportmediadesignedtothisstandard.

Inthisdocument,“should”isusedtodefineacapabilitythatmustbeimplementedfortheunittomeettheminimumlevelofcompatibilityintendedbythisstandardand“does/is/will”areusedtoexpressastatementoffactbasedonotherrequirements.“May”isusedtoexpressanoptionalcapability.Incaseswherethesecapabilitiesareimplemented,it“should”beimplementedinaspecificmannerdefinedinthisstandard.Otherwiseanincompatibilitymayexistwiththeaircraftorotherinterfacingequipment.

FunctionoftheEquipment

Thedataloaders(bothPDLandADL)shouldbeabletotransferdatabetweenaselectedairbornecomputerandastandardremovablemedia.ThesetransfersshouldoccurviaanEthernetdatabusdefinedinARINCSpecification646.Thetransferofdatafromthedataloadertotheairbornecomputerisreferredtoas“uploading.”Thetransferofdatafromtheairbornecomputertothedataloaderisreferredto

as“downloading.”BothuploadanddownloadcapabilityisdesiredforthePDLandtheADL.

Airlineoperatorsdesireadataloaderthatiscapableofsupportingthenewgenerationofavionicsequipmentthatrequireshigh-speedloading,duetotheincreasedsizeofoperationalprogramsanddatabeingloaded.Thedataloadershouldsupportnewgenerationavionicsequipmentthatisforeseeableovertheoperationallifeoftheairplane.SomeairlineoperatorsmayinstallbothnewgenerationandlegacygenerationequipmentrequiringloadingbyARINC615AandARINC615.TheARINC615Adefinitionshouldnotprecludethecombinationofbothdataloadingtypesinonephysicaldataloadershouldthemarketdesiresuchadataloader.

Protocolfilenamesarecasesensitive.RefertoSection5.1.

COMMENTARY

Theairlineusercommunitysetthedesiredoperationalcapabilityfordataloading.Thefollowingspecificationsshouldbeviewedasminimumcapabilities.Airlineswelcomeadditionalimprovementsprovidingtheyarecost-effective.

ThegoalistoloadanyLRUwithin15minutes.

Multipleunitsshouldbeloadablewithoneoperatoraction.

Hard-wiredselectionswitchesareundesirable.

Operatorinteractionshouldbelimitedtotheinstallationofthephysicalmedia,selectionoffile(s)andverificationthattheoperationiscomplete.

UnitDescription

Inthisdocumentallreferencestothe“dataloader”shouldbeinterpretedasmeaningboththePDLandtheADL.

PDLDescription

ThePDLshouldbeaportableunithousingallofthecomponents,electroniccircuitry,controls,etc.,incidenttothefunctioningofthesystemwithinaneasilytransportableinstrumentcase.AllcontrolandstatusindicationsshouldbeavailableonthefrontpanelofthePDL.Thisunitisintendedforuseonallavionicsequipmentwithembeddedsoftware.

ThePDLisexpectedtoperformthedataloadingfunctionsdefinedinthisdocument.However,someairlineoperatorsmaydesireamoreelaborateportabledevicethatiscapableofperformingadditionalfunctionssuchasretrievalofmaintenancedatafromARINC604BITEsystemsorARINC624OnboardMaintenanceSystems.ARINCReport644AprovidesguidelinesforthedevelopmentofaPortableMulti-PurposeAccessTerminal(PMAT)thatprovidesadditionalfunctionality.

ADLDescription

TheADLshouldbeconsistentwithon-boardequipmentfeaturesincludingstandardaircraftinstrumentpanelmountingfeatures,cableconnection,easyaccess,environmentalperformanceandprovideforstraightforward

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ADLDescription(cont’d)

INTRODUCTION

partnumber.Partsreplacementshouldonlybenecessarywhenthepartfailstomeettheminimumoperational

c-1

operation.Thedesignshouldprovideadequateprotectionofthemediumfromcontaminatingenvironments.

Interchangeability

MediaInterchangeability

Interchangeabilityoftheformattedmediumisdesiredregardlessofthemanufacturingsourcesofthedataloaderorthemedia.

UnitInterchangeability

Interchangeabilityofdataloaderequipmentisdesiredregardlessofthemanufacturingsource.ThemediumanddriveshouldsupporttheformatfeaturesdescribedinSection4.

Interoperability

Avionicsequipmentintendingtocomplywiththisstandardshouldbedesignedtomeettheelectricalandfunctionalinterfacecharacteristicsofthisstandard.

InteroperabilitybetweenARINC615AandARINC615dataloadersisdesirable.OnairplaneswherethereisamixofARINC615AandARINC615loadableavionicsequipment,theloadportshouldsupporteitherdataloaderoracombinedARINC615A/615dataloader.

Thestandardscontainedhereinmaybeappliedtootherequipmentcapableofdataloading,thoughnotspecificallydedicatedtothedataloadingfunction.WhentheADLfunctionisincorporatedintoothersystemslocatedontheairplane,thosesystemsshouldcontainthedigitalinterfacesandprotocolsspecifiedinthisdocumentandsupportthestandardizedmediatypes.

SoftwareloadsshouldbecompliantwithARINCReport665,LoadableSoftwareStandards.

Reliability

Theanticipateduseofthedataloaderdemandstheutmostattentiontotheneedforreliabilityinallphasesofdesign,production,installationandoperationoftheequipment.

COMMENTARY

Thedesignermaybesurprisedtofindnoelaboraterequirementsforreliability.Theairlinesareinamostfortunatepositioninthisregardbecausetheyhavefoundthepressuresofthe“marketplace”exertatrulymeaningfulinfluenceuponthedesignandproductionqualitycontrolnecessarytoachievehighequipmentreliability.

Maintainability

Theequipmentdesignshouldbemodularinconceptandshouldbeassembledtofacilitateshoprepair.Thestackingofindividuallyreplaceablecomponentsshouldbeavoided.Thespacingofcomponentsshouldfacilitateshoprepairandconstructionshouldpermitmoduleorcomponentremovalwithoutinterference.Allmodulesorsubassembliesshould

requirements.

RegulatoryApproval

TheequipmentshouldmeetallapplicableFederalAviationAdministration(FAA),EuropeanJointAviationAuthority(JAA),FederalCommunicationsCommission(FCC),andanyotherairlineregulatoryrequirements.Thisdocumentdoesnotandcannotsetforththespecificrequirementsthatequipmentmustmeettoassureapproval.Suchinformationshouldbeobtainedfromtheregulatoryagenciesthemselves.

RelatedDocuments

Thelatestversionofthefollowingdocumentsapply:

RTCADO-160,EnvironmentalConditionsandTestProceduresforAirborneEquipment

RTCADO-178,SoftwareConsiderationsinAirborneSystemsandEquipmentCertification

EUROCAEED-12,SoftwareConsiderationsinAirborneSystemsandEquipmentCertification

EUROCAEED-14,EnvironmentalConditionsandTestProceduresforAirborneEquipment

EuropeanComputerManufacturer’sAssociation(ECMA),Standard267–120mmDVD-ReadOnlyDisk

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--`,,`-`-`,,`b,,e`,`,,i`-n--terchangeablewithothersub-unitsbearingthesame

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Introduction

INTERCHANGEABILITYSTANDARDS

ADLWeight

ARINCREPORT615A-Page3

Thissectionsetsforththephysicalcriteria,inputandoutputinterfaces,andpowersupplycharacteristicsdesiredforthePortableDataLoader(PDL)andAirborneDataLoader(ADL).

Manufacturersshouldnotethat,althoughthisReportdoesnotprecludetheuseofdifferentinterfaceandinterwiringfeatures,thepracticalproblemofredesigningtoaccommodatesomespecialsystemcouldverywellmaketheuseofthatotherdesignprohibitivelyexpensiveforthecustomer.Theyshouldrecognize,therefore,thepracticaladvantagesofdevelopingequipmentinaccordancewiththestandardssetforthinthisdocument.

AvionicsequipmentintendingtomeettheseinterfacesstandardsmustcomplywithSections5and6ofthisdocumentconcerningthedataloadingprotocolandbusinterface.

FormFactorandConnectors

PhysicalSize

PDLPhysicalSize

ThePDLshouldbedesignedtobeaportableflightlinepieceoftestequipment.AlthoughnorestrictionshavebeenmadeontheactualsizeofthePDL,theusersdesirethatthisunitbeassmallaspossible.Shockabsorbingbumpersorrailscouldbeanattractivefeaturetousersconcernedaboutdurability.AllaccessorycomponentssuchascablesanddisksshouldbecarriedasanintegralpartofthePDLcompletelycontainedwithinthepackagingunit.

ADLPhysicalSize

TheADLshouldbedesignedforcommercialaircraftinstrumentpanelmountingheightandwidthdimensionsfoundinMS25212.Panelheightshouldnotexceed4.5inchesmaximumincludingpowersupply.Anyvibration/shockisolationfeaturesneededtomeetthisapplicationshouldbecontainedwithintheenclosureandnotrequireanyspecialalignmentforinstallation.ADLlengthshouldbelimitedto7.0inchesmaximumfromrailmountingsurfaceoffrontpaneltotherearofthechassisexcludingconnectorprotrusion.

COMMENTARY

AlthoughMS25212limitsinstrumentdepthto6.5inches,theADLmayexceedthisvaluetoalimitof

7.0inches.Thoughundesirable,themanufacturersbelievethatthisdepthisnecessarytohousethediskdrive.Ifyoucanmakeitshorter,byallmeansdoit.

DataLoaderWeight

PDLWeight

ThepackagedweightofthePDLshouldnotexceed17.6pounds(8kg).Theweightshouldbedistributedasevenlyaspossiblesoastoprovideforconvenienttransportationbyonepersonusingonlyonehand.

ThepackagedweightoftheADLshouldnotexceed6.6pounds(3kg).

ControlsandIndicators

PDLControlsandIndicators

ThePDLoperator’sinterfaceshouldbeviaacontrolpanel,whichisanintegralpartoftheunit.Thecontrolpanelshouldbedesignedforeaseofuseandshouldcontainallswitchesnecessarytocontrolsystemfunctionsandallindicatorsnecessarytodeterminesystemandfunctionalstatus.

ADLAnnunciatorLights

TheADLshouldcontainamethodofdisplayingthestatusofthecurrentoperation.Anyindicatorsshouldnotdistracttheflightdeckcrewduringflight.

COMMENTARY

ThereareconflictingviewsastowhetherornotoperationalstatusindicatorsshouldappearonthepaneloftheADL.SomeindicatedthatwiththeMCDUinterface,ADLstatusindicatorsareredundantandcouldbedistractingtooperators.ForapplicationswheretheMCDUinterfaceisnotimplemented,however,statusindicatorswerefelttobenecessaryforoperatorusage.Thesolutiontothisproblemrecommendedhereinistomountthestatusindicatorsbehindamovablepanel(e.g.,thediskdriveaccessdoor)sothattheywillbevisibleonlywiththedooropen.

Drive/InterfaceMechanisms

ThedrivemechanismandmedialoadingfeaturesaredefinedinSection4ofthisdocument.

Connector

PDLConnector

TheplacementofsignalsontheconnectorpinsshouldbebackwardcompatiblewithARINCReport615toallowmanufacturerstosupplyacombinedARINC615A/615dataloaderinonephysicalpackageifdesired.

TheinterfaceconnectormountedonthePDLshouldbeaMS27508E-18A-53Porequivalent.Theconnectorshouldbemountedonthefront(control)panelofthePDL.RefertoAttachment1forconnectorpinoutdefinition.

ADLConnector

TheplacementofsignalsontheconnectorpinsshouldbebackwardcompatiblewithARINCReport615toallowmanufacturerstosupplyacombinedARINC615A/615dataloaderinonephysicalpackageifdesired.

TheADLinterfaceconnectorshouldbeanMS27508E-18A-53Pmountedontherearpaneloftheunit.RefertoAttachment1forconnectorpinoutdefinition.

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ARINCREPORT615A-Page4

DataBusInterface

INTERCHANGEABILITYSTANDARDS

COMMENTARY

c-1

TheinterfacetothesoftwaredataloaderisanEthernetinterfacedefinedbyARINCSpecification646.

COMMENTARY

Dataloaderandtargethardwaredevicesareexpectedtosupport10BaseTconnections.Ifadataloaderordevicesupportshigherspeedconnections(e.g.,100BaseT),thenitmustbeabletoautomaticallyfallbacktoalowerspeedwhenconnectedtoaslowerdevice.

PowerCircuitry

PrimaryPowerInput

Thedataloadershouldbeabletooperatenormallyintherangeof104to122Vac(RMS),380to420Hz.Thedataloadershouldnotbedamagedbyapowerinputintherangeof0to97Vac(RMS)foraperiodofuptotenseconds.AdditionalguidanceonpowerinputisprovidedinARINCReport609,“DesignGuidanceforAircraftElectricalPowerSystems.”

Thedataloadershouldoperatewithnodegradationinitsspecifiedperformancethroughapowerinterruptionof20millisecondduration.

Whenapowerinterruptionoccursforaperiodequaltoorgreaterthan20milliseconds,theunitshouldeithercontinuetooperatewithnodegradation,orifthedatatransferprocessisaffected,thedataloadershouldreinitializeinaccordancewiththenormalpower-upsequence.

PDLPrimaryPowerInput

ThePDLshouldbedesignedtooperatefromaircraft-supplied115Vac,400Hzpower.Powerdissipationshouldnotexceed30watts.

COMMENTARY

Provisionofotherpoweroptionssuchas115Vac,50to60Hz;230Vac,50to60Hzand+28Vdcareopentothemarketplace.

Thedataloaderwillinterfacewithnumeroustypesofequipmentinvariousinstallationconfigurations.Inordertoeliminateadverseeffectsthatmayresultfromvoltageandphasedifferencesinmultiplepowersources,thedataloaderinterwiringinstallerisurgedtoprovidepowertothedataloaderfromthesamepowersourceastheequipmentbeingloaded.

However,thismaynotalwaysbepractical,therefore,thedataloadermanufacturersareurgedtobuildtheirequipmenttobeinsensitivetosuchvoltageandphasedifferences.

Forunitsrequiringheaters,powerdissipationshouldnotexceed100wattsduringheateroperation.Theselectionofadiskdriveneedingaheatertoextendlowtemperatureperformanceisdiscourage