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ARINC 603:1981

ARINC 603:1981 Airborne Computer Data Loader Describes the desired characteristics of a data loader intended for use with airborne computers installed on commercial transport aircraft. The data loader transfers data from a tape cartridge to an a

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Table of Contents

1.0INTRODUCTION
1.1Purposeofthisreport
1.2Functionoftheequipment
1.3Unitdescription
1.4Interchangeability
1.5Reliability
1.6Maintainability
2.0INTERCHANGEABILITYSTANDARDS
2.1Introduction
2.2Formfactorandconnectors
2.2.1Physicalsize
2.2.2Weight
2.2.3Controls
2.2.4Tapedrive
2.2.5Connector
2.3Powercircuitry
2.3.1Primarypowerinput
2.3.2Powercontrolcircuitry
2.3.3Internalcircuitprotection
2.4Environmentalconditions
2.4.1Temperature
2.4.2Pressure
2.4.3Humidity
2.4.4Rain
2.4.5Solventresistance
2.4.6Vibration
2.4.7Shock/handling
2.4.8Abnormalpowerconditions
2.4.8.1Powerinterruption
2.4.8.2Powervariation
2.4.9Electromagneticinterference
2.4.10Dust
2.5Grounding
3.0SIGNALCHARACTERISTICS
3.1Interfacestandards
3.2Magnetictape
3.2.1Format
3.2.2Blocksize
3.2.3Datatracks
3.3Filetransferprotocol
3.3.1Automaticmode
3.3.2Controlmode
3.3.3Informationelements
3.3.3.1Initialwordtypes
3.3.3.2Intermediatewords
3.3.3.3Finalwords
3.3.3.4Wordtypeencoding
3.3.4Dataloadercommunications
3.3.4.1Requesttosendword
3.3.4.2Datafollowsword
3.3.4.3Intermediatewords
3.3.4.4Finalword
3.3.4.5Headerword
3.3.5Airbornecomputercommunications
3.3.5.1Cleartosendword
3.3.5.2DatareceivedOKword
3.3.5.3DatareceivednotOKword
3.3.5.4Synchronizationlostword
3.3.5.5Headerword
3.3.5.6Pollword
3.3.5.7Allotherwords
3.3.6Datatransferfailure
3.3.7Readfailure
3.3.8Dataloaderheaderwordformat
3.3.8.1Statusfield
3.3.8.2Commandfield
3.3.9Airbornecomputerheaderwordformat
3.3.9.1Selecttrack
3.3.9.2Spaceblockforward
3.3.9.3Spaceblockreverse
3.3.9.4Spacefileforward
3.3.9.5Spacefilereverse
3.3.9.6Rewind
3.3.9.7Automaticmode
3.3.9.8Controlmode
3.3.9.9Systemreset
3.3.9.10Readblock
3.3.9.11Requeststatus
3.3.9.12Loadcomplete
3.4Discreteoutputs
4.0UNITDESIGN
4.1Functionselector
4.2Tapeejector
4.3Indicators/displays
4.3.1"ON"indication
4.3.2"READY"indication
4.3.3"TRANSFERINPROGRESS"indication
4.3.4"TRANSFERCOMPLETE"indication
4.3.5"UNITFAIL"indication
4.3.6"READFAIL"indication
4.3.7"DATATRANSFERFAIL"indication
4.4Legendsandinstructions
4.5Internalheater
4.6Specialphysicalprovisions
4.6.1Tape
4.6.1.1Playbackopening
4.6.1.2Storage
4.6.2Cable
4.6.2.1Sizeandterminations
4.6.2.2Storage
4.7Tapeinitialization
4.8Dataloadertests
4.8.1Power-upself-test
4.8.2Maintenancetest
ATTACHMENTS
1Datawordformat
2Standardinterwiring
3Dataloaderresponses
4Dataloadercommands
5Airbornecomputerresponses
APPENDIX
1Typicalsystemflowchart

Abstract

Describes the desired characteristics of a data loader intended for use with airborne computers installed on commercial transport aircraft. The data loader transfers data from a tape cartridge to an avionics computer via an ARINC 429 data bus.

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