Table of Contents
1.0INTRODUCTIONANDDESCRIPTION
1.1PurposeofthisCharacteristic
1.2FunctionoftheEquipment
1.3UnitDescription
1.3.1ReceiverUnit
1.3.2ControlPanel
1.3.3Antennas
1.3.4Instrumentation
1.4InterchangeabilityRequirements
1.4.1GeneralRequirementsforInterchangeability
1.4.2InterchangeabilityRequirementsfortheARINC
479VORReceiver
1.4.3ExceptiontotheRequirementforGeneration
Interchangeability
1.5RegulatoryApproval
1.6ApplicablePublications,Specifications,and
Reports
2.0STANDARDSREQUIREDTOEFFECTINTERCHANGEABILITY
2.1FormFactorsandConnectors
2.1.1ReceiverUnitFormFactor
2.1.1.1Cooling
2.1.2StandardControlPanel
2.1.3Indicators
2.1.4Antennas
2.2Weight
2.3Interwiring
2.4PowerCircuitry
2.4.1PrimaryPowerInput
2.4.2PowerControlCircuitry
2.4.3TheCommonGround
2.4.4TheACCommonCold
2.5StandardOutputs
3.0VORNAVIGATIONRECEIVERDESIGN
3.1VORReceiver
3.1.1FrequencyRangeandChanneling
3.1.2FrequencySelection
3.1.3ReceiverSensitivity-AuralReception
3.1.4ReceiverSensitivity-NavigationOperation
3.1.5Selectivity
3.1.6UndesiredResponses
3.1.7CrossModulation
3.1.7.1CrossModulationInBand
3.1.7.2CrossModulationOutofBand
3.1.8VORReceiverPerformanceinthePresenceofVHF
CommunicationsTransmissions
3.1.9AutomaticGainControl
3.1.10DesensitizationandInterferenceRejection
3.1.10.1AGCVersusPulseInterference
3.1.10.2PulseNoiseOutput
3.1.10.3Out-of-BandFMBroadcastIntermodulation
Interference
3.1.10.4Out-of-BandFMBroadcastDesensitization
Interference
3.2VORReceiverAuralOutput
3.2.1Gain
3.2.2AudioOutputLevelVariationwithLoad
Impedance
3.2.3AudioFrequencyResponse
3.2.4HarmonicDistortion
3.2.5AudioOutputServiceAdjustment
3.3VORReceiverOutputs
3.3.1Omni-Bearing
3.3.1.1DigitalOmni-Bearing
3.3.1.2AnalogOmni-Bearing
3.3.1.3DigitalOmni-BearingAccuracy
3.3.1.4AnalogOmni-BearingAccuracy
3.3.1.5VariableConditions
3.3.2Deviation
3.3.2.1HighLevelDeviationOutput
3.3.2.2LowLevelDeviationOutput
3.3.2.3DeviationOutputPolarity
3.3.2.4DeviationLinearity
3.3.2.5LinearDisplacementAccuracy
3.3.2.6CourseDeviationintheAbsenceofDMEData
3.3.3DataLag
3.3.4BeamNoiseSuppression
3.3.4.1LinearDeviationMode
3.3.4.2AngularDeviation(Reversionary)Mode
3.3.5To/FromCircuitOutput
3.3.6WarningSignals
3.3.6.1HighLevelWarningSignal
3.3.6.2LowLevelWarningSignal
3.3.6.3DigitalWarningSignal
3.3.6.4AngularDeviationModeReversionWarning
3.3.7VORAuralOutput
3.4VORMonitoringRequirements
3.4.1InputSignalMonitoring
3.4.2FailureMonitoring
4.0CONTROLPANELDESIGN
4.1GeneralConfiguration
4.2ConnectorTypes
4.3CommonILS,VORandDMEFrequencySelectors
4.4On/OffControl
4.5VolumeControl
4.6OtherControls
4.7IntegralLighting
5.0ANTENNAS
5.1VORAntenna
5.2AntennaTransmissionLineConsiderations
6.0PROVISIONSFORAUTOMATICTESTEQUIPMENT
6.1General
6.2UnitIdentification
6.2.1PinAllocation
ATTACHMENTS
1ReceiverUnitConnectorPositioning
2StandardInterwiring
2(Cont'd)NotesApplicabletoStandardInterwiring
3StandardControlPanelOutlineDrawing
3(Cont'd)ControlPanelMountingPlateAssembly
3(Cont'd)StandardVHFNAV/DMEControlPanelWiring
4FrequencySelectorTwo-Outof-FiveBinaryCode
5FrequencyPairingPlanVOR/ILS/DME
6Omni-BearingDigitalSignalStandards
7OBSResolverCharacteristics
8TypicalAntennas
9BackgroundMaterialontheSpecificationof
CrossModulationPerformanceRequirements
10EnvironmentalTestCategories
11RMIDetails
12AssumedOut-of-BandFMBroadcastInterference
TestProcedures
Appendices
1ExcerptsFromICAOAnnex10"International
StandardsandRecommendedPractices
AeronauticalTelecommunications"
IITheU.S.NationalAviationStandardforthe
VORTACSystem
IIITechnicalStandardOrderfortheVORReceiver
IVFAAAdvisoryCircularNo.91-18dated12/6/68
CourseNeedleOscillationsonVHF
OmnidirectionalRange(VOR)Receivers
VChronologyandBibliographyoftheAEECARINC
579AirborneVORReceiverProject Abstract
Describes basic requirements for a new generation VOR receiver specifically designed for installation in all types of commercial transport aircraft. Provides specific and general design guidance for the development and installation of a VOR receiver primarily for airline use.
