Enums Enums used in NI-Digital Pattern Driver BitOrder DigitalEdge DriveFormat FrequencyMeasurementMode HistoryRAMCyclesToAcquire HistoryRAMTriggerType PPMUApertureTimeUnits PPMUCurrentLimitBehavior PPMUMeasurementType PPMUOutputFunction PinState SelectedFunction SequencerFlag SequencerRegister SoftwareTrigger SourceDataMapping TDREndpointTermination TerminationMode TimeSetEdgeType TriggerType WriteStaticPinState