ARINC 707:1978
ARINC 707:1978 Radio Altimeter Specifies the desired characteristics of a new generation Radio Altimeters intended for installation in all types of commercial transport aircraft. Also provides general and specific design guidance f
Table of Contents
1.0INTRODUCTIONANDDESCRIPTION1.1PurposeofthisCharacteristic
1.2FunctionoftheEquipment
1.3UnitDescription
1.3.1Receiver-TransmitterUnit
1.3.2Indicators
1.3.3Antennas
1.3.4ControlPanel
1.4Interchangeability
1.4.1GeneralRequirementsforInterchangeability
1.4.2"GenerationInterchangeability"Considerations
1.4.3InterchangeabilityDesiredfortheARINC707
RadioAltimeter
1.5RegulatoryApproval
1.6Reliability
1.7ApplicablePublications,SpecificationsandReports
2.0INTERCHANGEABILITYSTANDARDS
2.1Introduction
2.2FormFactors,ConnectorsIndexPinCoding
2.2.1ReceiverTransmitterUnit
2.2.2Indicator
2.2.3Antennas
2.3Interwiring
2.4PowerCircuitry
2.4.1PrimaryPowerInput
2.4.2PowerControlCircuitry
2.4.3IndicatorPower
2.4.4TheCommonGround
2.4.5TheACCommonCold
2.4.6Transients
2.5StandardOutputs
2.6EnvironmentalConditions
2.7Cooling
2.8GroundandBonding
2.9LocationofR/TUnitinAircraft
2.10AircraftInstallationDelay(AID)Selection
2.11TransmissionLines
2.12TransmissionLoopGain
2.13AntennaIsolation
2.14FailureIndication
2.15Weight
3.0SYSTEMDESIGNANDPERFORMANCEREQUIREMENTS
3.1RadioFrequency
3.2FrequencyStability,ToleranceandSpectrum
Characteristics
3.3InputandOutputR/FCoupling
3.4TransmitterandReceiverLoopGain
3.5AltitudeRange
3.6AircraftInstallationDelay(AID)Calibration
3.7AltitudeOutputAccuracy
3.8TimeConstant
3.9AltimeterOutputNoiseLevel
3.10FailureMonitoring
3.10.1General
3.10.2MonitoredParameters
3.10.3MonitorIntegrity
3.10.4"NoComputedData"Annunciation
3.10.5FailureWarningAnnunciation
3.10.6FailureWarningDelays
3.10.7DelayinWarningDisplay
3.10.8IndicatorMonitoring
3.11RemovalofWarningDisplayinCruise
3.12FunctionalTest
3.12.1ConventionalFunctionalTest
3.12.2RemoteSimulationTest
3.12.3FunctionalTestInhibit
3.13BuiltinTestEquipment(BITE)
3.14EncodingofSDIDataBits
4.0"STANDARDINDICATOR"DESIGN
4.1StandardIndicator
4.2115VACPowerInput
4.3IndicatorRange
4.4IndicatorAccuracy
4.5DisplayinAbsenceofComputedData
4.6DisplayinEventofEquipmentMalfunction
4.7InputIsolation
4.8IntegralLighting
4.9ControlandDisplayDiscretes
4.10StandardInputs
4.10.1AlertReset
4.10.2FunctionalTest
4.11StandardOutputs
4.11.1DHAlert
4.11.2DH+DeltaHAlert
4.11.3HAlert
4.11.4IndicatorStatus
5.0ANTENNAS
5.1FrequencyandStandingWaveRatio
5.2BeamWidth
5.3PhysicalCharacteristics
5.4AntennaConnector
6.0PROVISIONSFORAUTOMATICTESTEQUIPMENT
6.1General
6.2UnitIdentification
6.2.1PinAllocation
6.3UseofATLASLanguage
6.4FlightLineTestConnector
ATTACHMENTS
1NotesApplicabletoStandardInterwiring
2AltimeterSystemWiringDiagram
3-1R/TUnitMiddlePlug(MP)
3-2R/TUnitBottomPlug
3-3RadioAltimeterR/TUnit
4ReceiverUnitConnectorPositioning
5TypicalVerticalScaleIndicator
6TypicalLayoutofConventionalIndicators
7DisplayConnector
8RadioAltimeterDisplayConnector
9RadioAltimeterStandardAntenna
10SuggestedFuture"Miniaturized"StandardAntenna
PhysicalCharacteristics
11MinimumAntennaIsolationValues(Typical
Installation)
12EnvironmentalTestCategories
13WordsFormatsandEncodingExamples
14StandardControlSignals
15MicrostripRadioAltimeterAntenna
APPENDICES
1.ChronologyandBibliography