Table of Contents
1.0INTRODUCTIONANDDESCRIPTION
1.1PurposeandScope
1.2RelationshiptoOtherDocuments
1.3FunctionalOverview
1.4SystemDescription
1.5DataBaseControl
1.6Interchangeability
1.6.1General
1.6.2InterchangeabilityDesiredfortheTAWSComponents
1.6.3"GenerationInterchangeability"Considerations
1.7RegulatoryApproval
1.8IntegrityandAvailability
1.9Reliability
1.10TestabilityandMaintainability
1.11FlightSimulators
1.12TAWSOptionalFeatures
2.0INTERCHANGEABILITYSTANDARDS
2.1Introduction
2.2FormFactors,ConnectorsandIndexPinCoding
2.3StandardInterwiring
2.3.1Standard"Open"
2.3.2Standard"Ground"
2.4PowerCircuitry
2.4.1PrimaryPowerInput
2.4.2PowerControlCircuitry
2.4.3TheACCommonCold
2.4.4TheCommonGround
2.4.5TAWSPowertotheTCM
2.4.6Batteries
2.5StandardizedSignaling
2.5.1GeneralAccuracyandOperatingRanges
2.5.2Resolution
2.5.3ARINC429DataBus
2.5.4DiscreteSignals
2.5.5StandardAnnunciators
2.5.6DisplayOutputBusOptions
2.5.7DataLoadingInterface
2.5.8RS-232Interface
2.5.9Built-InTest
2.6EnvironmentalConditions
2.7Cooling
2.8Weights
2.9GroundingandBonding
2.10Power
3.0SYSTEMDESIGNCONSIDERATIONS
3.1TAWSSystemFunctions
4.0INTERFACESANDPROTOCOLS
4.1TAWSArchitecture
4.2ARINC429Interfaces
4.2.1ARINC429InputLabels
4.2.2ARINC429OutputLabels
4.3DCAnalogInputs
4.4DiscreteInputs
4.5DiscreteOutputs
4.5.1Logic/LampDrivers
4.5.2MonitorLampDrivers
4.5.3TerrainDisplaySwitchingDiscretes
4.6TAWSConfigurationModule(TCM)
4.7AudioOutputs
4.7.1AudioSpeaker
4.7.2InterphoneOutput
4.8DisplayVideoOutput
4.9DataLoadingInterface
4.9.1Type1EquipmentDataLoading
4.9.2Type2EquipmentDataLoading
4.10TCMInterface
4.11ATEInterface
5.0BUILT-INTESTANDMAINTENANCEPROVISIONS
5.1FaultDetectionandReporting
5.1.1General
5.1.2SelfMonitoring
5.1.3FailureRateMonitor
5.1.4FaultMessaging
5.2RampMaintenanceandReturntoServiceTesting
5.3ProvisionsforAutomaticTestEquipment
5.3.1General
5.3.2ATETesting
5.4TAWSConfigurationVerification
ATTACHMENTS
1-1115Vac-RearConnector
1-228Vdc-RearConnector
1-3TAWS-RearConnectorLayout
2-1Type1ConnectorInsertConfigurations
2-2TAWSInterfacePins(byShellandPinNumber)
2-3Multi-UsePinUtilization
3EnvironmentalTestCategories(RTCADO-160)
4-1TAWSInputBlockDiagram-Typical
4-2TAWSOutputBlockDiagram-Typical
5TAWSConfigurationModule(TCM)
6ExampleTAWSConfigurationModule(TCM)Data
7-1TypicalARINC429InputLabels
7-2TypicalARINC429OutputLabels
8GlossaryofAcronyms Abstract
Defines the characteristics of a Terrain Awareness and Warning System (TAWS) for the installation in aircraft with digital signal interfaces. Intended to provide specific and general guidance for the installation and development of the TAWS unit primarily for airline use, describing the standards necessary and desired operational capability of equipment to ensure form factor, interchangeability, and pin assignments.
