NEMA TS 4:2005
NEMA TS 4:2005 Hardware Standards For Dynamic Message Signs (dms) With Ntcip Requirements Provides the user with safe, dependable, functional, and easily maintained Dynamic Message Sign (DMS) equipment.
Table of Contents
ForewordHistoryandAcknowledgements
Section1GENERAL
1.1ScopeandIntroduction
1.2GeneralStatements
1.3TypesofDMSSigns
1.3.1VariableMessageSigns(VMS)
1.3.2ChangeableMessageSigns
1.3.3BlankoutSigns
1.4TypesofTechnologies
1.5References
1.6AuthorizedEngineeringInformation
1.7GlossaryofDMSTerms
Section2ENVIRONMENTALREQUIREMENTS
2.1EnvironmentalandOperatingStandards
2.1.1DefinitionsofMajorUnitsoftheDMSEquipment
2.1.2ComplianceofMajorUnits
2.1.3Electrical
2.1.4Transients
2.1.5TemperatureandHumidity
2.1.6Vibration
2.1.7Shock
2.1.8TimeandTiming
2.2DMSEquipmentTests
2.2.1TestFacilities(ExceptVibrationandShock)
2.2.2TestUnit
2.2.3TestFunctions
2.2.4TestsForTransients,Temperature,Voltage,
andHumidity
2.2.5TestJ:VibrationTest
2.2.6TestK:Shock(Impact)Test
2.2.7TestL:PowerInterruptTests
2.2.8TestM:TimingAccuracyTests
Section3SIGNMECHANICALCONSTRUCTION
3.1General
3.1.1Weather-TightEnclosure
3.1.2TemperatureControl
3.1.3SignFace
3.1.4GalvanicProtection
3.1.5LightLeaks
3.1.6ContrastBorder
3.2Fixed-LocationDynamicMessageSigns
3.2.1StructuralIntegrity
3.2.2AluminumHousings
3.2.3HousingsMadeofOtherMaterials
3.2.4FrontandRearAccessFrontandRearAccessDMS
3.2.5FrontAccessDMS
3.2.6RearAccessDMS
3.2.7Walk-InAccessDMS
3.2.8ConvenienceOutlets,AllHousings
3.3PortableDMS
3.3.1TransportSafety
3.3.2StructuralIntegrity
3.3.3MajorSubsystems
3.3.4CorrosionProtectionandFinishes
3.3.5PowerSources
Section4CONTROLLERTOSIGNINTERFACE
4.1InterfacewithSignHousing
4.2Wiring
4.3WireEntrances
4.4PixelControlWiring
4.4.1PowerSupplyLocations
4.4.2DMSControllerandDriverModuleLocations
Section5DISPLAYPROPERTIES
5.1General
5.1.1DevelopmentSources
5.1.2LegibilityVersusVisibility
5.1.3PhotometricandColorimetricRequirements
5.2ContrastRatio
5.3ConeofVisionTypeClassification
5.3.1LightEmittingTechnology
5.3.2ReflectiveTechnology
5.3.3HybridTechnology
5.4LuminanceIntensityRequirements
5.4.1LuminousIntensityUniformity
5.5ChromaticityClassificationsandLimits
5.5.1ChromaticityLimits
5.5.2ChromaticityUniformity
5.6DisplayCharacters
5.6.1FontsandFontAlphabets
5.6.2RequiredFontsbySignType
5.7DisplayChangeTime
5.8MovingArrows
5.9TestMethods
5.9.1GeneralTestParameters
5.9.2TestArea
5.9.3ConsiderationsforPrecisionandBiasofTest
MethodsandAccuracyofTestResults
Section6OPTICALCOMPONENTS
6.1General
6.1.1PixelSpacing
6.1.2CharacterModuleSpacing
6.1.3InterchangeabilityofCharacterModules
6.1.4CharacterModuleReplacement
6.2ShutteredFiberOpticLightSystem
6.2.1General
6.2.2FiberopticHarnesses
6.2.3LampAssembly
6.2.4LightFilter
6.2.5ShutterSystem
6.3LEDLightSystem
6.3.1General
6.3.2LEDSelection
6.3.3LEDUse
6.4FiberOpticHybridLightSystem
6.4.1General
6.4.2Requirements
6.5LEDHybridLightSystem
6.5.1General
6.5.2Requirements
Section7DMSCONTROLLERCABINET
7.1General
7.2CabinetDesign
7.2.1Layout
7.2.2Protection
Section8ELECTRONICSANDELECTRICAL
8.1ElectronicComponents
8.1.1General
8.1.2Interchangeability
8.2Components
8.2.1General
8.2.2ElectronicComponents
8.2.3Capacitors
8.2.4Potentiometers
8.2.5Resistors
8.2.6SemiconductorDevices
8.2.7TransformersandInductors
8.2.8Triacs
8.2.9CircuitBreakers
8.2.10Fuses
8.2.11Switches
8.2.12Wiring,Cabling,andHarnesses
8.2.13ControllerIndicatorsandCharacterDisplays
8.2.14Connectors
8.3MechanicalRequirements
8.3.1Assemblies
8.3.2PCBDesignandConnectors
8.3.3ModelNumbers
8.4PrintedCircuitBoards
8.4.1Design,Fabrication,andMounting
8.4.2Soldering
8.5LocationandProvisionsofDrivingElectronics
8.5.1General
8.5.2ShutteredFiberOpticSigns
8.5.3LEDSigns
8.5.4FiberopticHybridSigns
8.5.5LEDHybridSigns
8.6CabinetWiring
8.7Communication
8.7.1CommunicationInterfaces
8.7.2Communications
8.8BrightnessControls
8.8.1AmbientLightSensingandDimmingControl
8.9DMSControllerElectronics
8.9.1General
8.9.2CentralProcessorUnit
8.9.3Input/Output
8.9.4InternalClock
8.9.5WatchdogTimer
8.9.6LossofPower
8.9.7CommunicationsLinkMonitor
8.9.8ManualTestInterface
8.9.9ControllerResetSwitch
8.10ControllerFunctions
8.10.1General
8.10.2ControlArchitectures
8.10.3CommonFunctionality
8.10.4CentralizedMessagingArchitecture
8.10.5LocalMessagingArchitecture
8.10.6DisplayWriting
8.10.7NTCIPProtocolandCommandSets
8.10.8OtherProtocolsandCommandSets
8.11LocalControl
Section9PERFORMANCEMONITORING
9.1DisplayDiagnosticsandMonitoring
9.1.1IncandescentLampTests
9.1.2ShutterandDiskMonitoringPixelService
9.1.3LEDPixelTests
9.1.4LEDTemperatureMonitor
9.2ControllerDiagnosticsandMonitoring
9.2.1WatchdogTimer
9.2.2ResultsofControllerFailures
9.2.3PowerLineFailures
9.2.4CommunicationLinkFailures
9.2.5SubsystemComponentCommunications
9.3ErrorandFailureLog
9.4MessageVerification
Section10POWERREQUIREMENTS
10.1ACorDCElectricalService
10.2PowerPanelsforACOnly
10.2.1MinimumRequirements
10.2.2ServiceDropAdvisory
10.3DistributionPanelsforDC
10.4GroundtoNeutralIsolation
10.5SurgeProtectionDevice
10.6ConvenienceOutletsACOnly
10.7CalculatedElectricalLoad
Section11CONFORMANCE
11.1General
11.1.1InvolvedParties
11.1.2Other
11.2ConformanceDocumentTypes
11.2.1Certificates
11.2.2ConformanceTesting
11.2.3Statement
11.2.4Inspections
11.2.5Evaluation
11.3Requirements
11.3.1Mandatory
11.3.2Optional
11.4ConformanceDocumentationRequirements
11.5ConformanceTable
Section12DOCUMENTATION
12.1DrawingDocumentation
12.1.1SystemDiagrams
12.1.2WiringDiagrams
12.1.3MechanicalDrawings
12.2SiteSpecificDocumentation
12.2.1Conformancetablechecklist
12.2.2NTCIPMIBfile
12.2.3As-builtDocumentation
12.2.4ConfigurationInformation
12.2.5RevNumbers
12.2.6TestResults
12.2.7ProductBurn-In
12.3Manuals
12.3.1Service
12.3.2Troubleshooting
12.3.3Operator'sManual
12.4WarrantyDocumentation
Figures
Tables