Table of Contents
1.0INTRODUCTIONANDDESCRIPTION
1.1PurposeofThisReport
1.2FunctionoftheEquipment
1.3UnitDescription
1.3.1PDLDescription
1.3.2ADLDescription
1.4Interchangeability
1.4.1MediaInterchangeability
1.4.2UnitInterchangeability
1.5Reliability
1.6Maintainability
2.0INTERCHANGEABILITYSTANDARDS
2.1Introduction
2.2FormFactorandConnectors
2.2.1PhysicalSize
2.2.1.1PDLPhysicalSize
2.2.1.2ADLPhysicalSize
2.2.2DataLoaderWeight
2.2.2.1PDLWeight
2.2.2.2ADLWeight
2.2.3ControlsandIndicators
2.2.3.1PDLControlsandIndicators
2.2.3.2ADLAnnunciatorLights
2.2.4DiskDrive
2.2.5Connector
2.2.5.1PDLConnector
2.2.5.2ADLConnector
2.3PowerCircuitry
2.3.1PrimaryPowerInput
2.3.1.1PDLPrimaryPowerInput
2.3.1.2ADLPrimaryPowerInput
2.3.2PowerControlCircuitry
2.3.3InternalCircuitProtection
2.3.3.1PDLInternalCircuitProtection
2.3.3.2ADLInternalCircuitProtection
2.4EnvironmentalConditions
2.4.1Temperature
2.4.1.1PDLTemperature
2.4.1.2ADLTemperature
2.4.2Pressure
2.4.3Humidity
2.4.4Rain
2.4.5SolventResistance
2.4.6Vibration
2.4.7Shock/Handling
2.4.7.1PDLShock/Handling
2.4.7.2ADLShock/Handling
2.4.8ElectromagneticCompatibility
2.4.8.1PDLElectromagneticCompatibility
2.4.8.2ADLElectromagneticCompatibility
2.4.9Dust
2.4.10ExplosiveAtmosphere
2.4.11FungusResistance
2.5DataTransferStandard
2.6Grounding
2.7Standard"Open"
2.8Standard"Ground"
2.9StandardDiscreteInput
2.10StandardDiscreteOutput
3.0SIGNALCHARACTERISTICS
3.1InterfaceStandards
3.1.1DITSChannelRequirements
3.1.2ChannelOperation
3.2MagneticDiskRecordingFormats
3.2.1PhysicalFormat
3.2.2LogicalFormat
3.2.3LoaderConfigurationFile
3.2.3.1DiskFormat
3.2.3.2DiskWriteEnable
3.2.3.3DiskOverwrite
3.2.3.4MaintenanceTestDisk
3.2.3.5DiskSequenceNumber
3.2.3.6DiskTotalNumber
3.2.3.7Track"n"FileName
3.2.3.8ARINC429Bus"n"Definition
3.2.3.9ARINC429Bus"n"Priority
3.2.3.10ARINC429Bus"n"TXFileName
3.2.3.11ARINC429Bus"n"RXFileName
3.2.3.12ARINC429Bus"n"Write
3.2.3.13ARINC429Bus"n"Overwrite
3.2.3.14DataLoaderLabel
3.2.3.15TrackDiscreteOverride
3.2.4DefaultLoaderConfiguration
3.2.5DataTracks
3.3FileTransferProtocol
3.3.1CommunicationsInitialization
3.3.2UploadingFile(s)
3.3.2.1Uploadingdirectlyasaresult
ofCommunicationInitialization
3.3.2.2UploadingafterFileSelectionin
ControlMode
3.3.2.3UploadinginControlMode
3.3.3DownloadingFile(s)
3.3.3.1DownloadingDirectlyasaResult
ofCommunicationInitialization
3.3.3.2DownloadingafterFileSelection
inControlMode
3.3.3.3DownloadinControlMode
3.3.4PowerInterruptRecovery
3.3.5DiscProblems
3.3.6BusSequenceOperation
3.3.7MultipleDiscOperations
3.3.7.1AutomaticDiscChangeRequestdue
toaContinuedFileduringAutomatic
Upload
3.3.7.2AutomaticDiscChangeRequestdue
toaContinuedFileduringControl
Upload
3.3.7.3ProtocolforaDiscChangeRequest
duetoinsufficientspaceduring
ControlDownload
3.3.7.4AutomaticDiscChangeRequestdue
toinsufficientspaceduringAutomatic
Download
3.3.7.5AutomaticDiscChangeRequestdue
toabussequencewithDSN3.3.7.6CommandedDiscChangeinControlMode
3.3.8DiscChangeOperation
3.4Modes
3.4.1Ready
3.4.2TransferinProgress
3.4.3TransferFail
3.4.4DiscChangeMode
3.4.5DataLoaderFail(Read/WriteFailure)
3.4.6TransferComplete
3.5Command/ResponseProtocol
3.5.1InitialWordTypes
3.5.1.1RequesttoSendWord(RTS)
3.5.1.2CleartoSendWord(CTS)
3.5.1.3DataFollowsWord(DF)
3.5.1.4DataReceivedOKWord(ACK)
3.5.1.5DataReceivedNotOKWord(NAK)
3.5.1.6SynchronizationLostWord
3.5.1.7HeaderWord(HDR)
3.5.1.8PollWord(POL)
3.5.1.9AirborneComputerStatusWord
(ACSTAT)
3.5.1.10ExtendedPollWord(EPOL)
3.5.2IntermediateWords
3.5.3FinalWord
3.5.4DataElementsTransmission
3.5.5LoaderStatus
3.5.5.1GeneralStatus
3.5.5.2LoaderExtendedStatus
3.5.5.3LoaderIndicatorStatus
3.5.6AirborneComputerHeaderWordFormat
3.5.6.1RestartFileSequence
3.5.6.2AutomaticMode
3.5.6.3ControlMode
3.5.6.4SystemReset
3.5.6.5ReadBlock
3.5.6.6WriteBlock
3.5.6.7RequestStatus
3.5.6.8LoadComplete
3.5.6.9DiscCommand
3.5.6.10DiscChange
3.5.6.11ExecuteSelfTest
3.5.6.12RequestExtendedStatus
3.5.6.13SelectHighSpeedTransmit
3.5.6.14ReturntoStart(RS)
3.5.6.15AutomaticDownload
3.5.6.16ReadIndicatorStatus
3.6AirborneComputerStatusWord
3.7DownloadofVersionDescriptionfromAirborne
Computer
3.8DiscreteOutputs
4.0UNITDESIGN
4.1DiskEjector
4.2Indicators/Displays
4.2.1"ON"Indication
4.2.2"READY"Indication
4.2.3"TRANSFERINPROGRESS"Indication
4.2.4"TRANSFERCOMPLETE"Indication
4.2.5"UNITFAIL"Indication
4.2.6"READ/WRITEFAIL"Indication
4.2.7"TRANSFERFAIL"Indication
4.2.8"DISKCHANGE"Indication
4.3LegendsandInstructions
4.4InternalHeater
4.5SpecialPhysicalProvisions
4.5.1Disk
4.5.1.1DiskAccessOpening
4.5.1.2Storage
4.5.2CableSizeandTermination
4.6Testing
4.6.1Self-Test
4.6.2MaintenanceTest
ATTACHMENTS
1ADLConnectorPositioning
2-1ADLandPDLConnectorSignalAssignments
2-2PDLStandardInterfaceCableWiring
2-3PDLAdapterCableWiringDiagram
2-4NotestoStandardInterwiring
3AirborneComputerResponses(deleted)
4DataLoaderCommands(SubcodesintheHeader
Words)
5DefaultLoaderConfiguration
6LoaderConfigurationFileExample(CONFIG.LDR)
7DataWordFormat
7ADataWordAttributes
8AddressLabels
9CommunicationInitialization
10EnvironmentalTestCategories
11ProtocolDiagrams
12DefinitionsofTerms
13DesignGuidelinesandApplicationExamples Abstract
Covers the desired characteristics for a "carry on" data loader meant for use with airborne computers installed on commercial transport aircraft. For the transport medium, the data loader uses a 3 1/2 inch diskette. Gives general and specific design guidance for the development of an airborne data loader (ADL) for on-aircraft installation and a portable data loader (PDL) for carry on application. The data loader will have a primary function of uploading data and operational programs on airborne computers. The data loader has a secondary capability of downloading data from airborne computers on the 3 1/2 inch magnetic diskette medium. Also covers the equipment desired capability and the necessary standards for the interchangeability of the 3 1/2 inch magnetic diskette medium.
