Table of Contents
1.0INTRODUCTIONANDDESCRIPTION
1.1PurposeofthisCharacteristic
1.2FunctionsoftheEquipment
1.3UnitDescription
1.3.1ReceiverUnit
1.3.2FrequencyControl
1.3.3Antennas
1.4Interchangeability
1.4.1General
1.4.2InterchangeabilityDesiredfortheARINC711
VORReceiver
1.4.3"GenerationInterchangeability"Considerations
1.5RegulatoryApproval
2.0INTERCHANGEABILITYSTANDARDS
2.1Introduction
2.2FormFactors,Connectors,andIndexPinCoding
2.2.1ReceiverUnit
2.2.2"StandardControlPanel"
2.2.3Antennas
2.3StandardInterwiring
2.4PowerCircuitry
2.4.1PrimaryPowerInput
2.4.2PowerControlCircuitry
2.4.3TheACCommoncold
2.4.4TheCommonGround
2.5StandardOutputs
2.6EnvironmentalConditions
2.7Cooling
2.8GroundandBonding
3.0VORRECEIVERDESIGN
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
3.1.11AdjacentChannelSignalProtection
3.2VORReceiverAuralOutput
3.2.1Gain
3.2.2AudioOutputLevelVariationwithLoadImpedance
3.2.3AudioFrequencyResponse
3.2.4HarmonicDistortion
3.2.5AudioOutputServiceAdjustment
3.2.6AudioPhaseShift
3.2.7AudioSourceImpedance
3.3VORReceiverOutputs
3.3.1DigitalOmnibearingAccuracy
3.3.2VariableConditions
3.3.3DataLag
3.4Monitoring
3.4.1InputSignalMonitoring
3.4.2FailureMonitoring
3.4.3FailureWarningAnnunciation
3.5FunctionalTest
4.0ANTENNAS
4.1VORAntenna
4.2VORAntennaTransmissionLineConsiderations
4.3MarkerBeaconAntenna
5.0PROVISIONSFORAUTOMATICTESTEQUIPMENT
5.1General
5.2UnitIdentification
5.2.1PinAllocation
5.2.2UseofATLASLanguage
6.0MARKERBEACONRECEIVERDESIGN
6.1General
6.2OperatingFrequency
6.3ReceiverSensitivity
6.3.1ReceiverThreshold
6.3.2ThresholdOperatingDifferential(Hysteresis)
6.3.3ReceiverThresholdServiceAdjustment
6.4Selectivity
6.5UndesiredResponses
6.6CrossModulation
6.7AutomaticGainControl
6.8ReceiverInputImpedance
6.9MarkerBeaconReceiverAudioOutput
6.9.1Gain
6.9.2AudioOutputLevelVariationwithLoadImpedance
6.9.3AudioFrequencyResponse
6.9.4NoiseandDistortion
6.9.5AudioOutputServiceAdjustment
6.10MarkerBeaconAnnunciatorActuationOutputs
6.10.1DiscreteOutputs
6.10.2DigitalOutput
6.11MarkerBeaconReceiverFunctionInhibit
6.12FunctionalTest
7.0BUILT-INTESTEQUIPMENT(BITE)
7.1Built-InTestEquipment(BITE)
7.2BITEDisplay
7.3FaultMonitor
7.4Self-TestInitiation
7.5MonitorMemoryOutput
ATTACHMENTS
1ReceiverUnitConnectorPositioning
2StandardInterwiring
NotesApplicabletotheStandardInterwiring
VORReceiverConnectorLayout(MiddleInsert)
VORReceiverConnectorLayout(BottomInsert)
3DigitalDataStandards
4BackgroundMaterialontheSpecification
ofVORReceiverCrossModulationPerformance
5EnvironmentalTestCategories
6VORNavigationNomenclatures
7AssumedOutofBandFMBroadcastInterference
TestProcedures
8TypicalTestProcedures
APPENDIXES
1StandardControlPanel
2ExcerptsfromICAOAnnex10"International
StandardsandRecommendedPractices
AeronauticalTelecommunications"RelevanttoVOR
3U.S.NationalAviationStandardfortheVORTAC
System
4ChronologyandBibliography Abstract
Describes the desired characteristics of a new generation VOR receiver intended for installation in all types of commercial transport aircraft. Functions of the VOR receiver are to receive and process VHF omni-directional range signals in the frequency band 108.00 to 117.95 MHz. It provides serial digital outputs of omni-bearing, and processes marker beacon transmissions on 75 MHz for annunciation to the flight deck crew.
