Timing Properties
- Updated2023-02-21
- 10 minute(s) read
Timing Properties
The Timing type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
 | AIConvertActiveEdge | Specifies on which edge of the clock pulse an analog-to-digital conversion takes place. |
| AIConvertMaximumRate | Indicates the maximum convert rate supported by the task, given the current devices and channel count. |
| AIConvertRate | Specifies in Hertz the rate at which to clock the analog-to-digital converter. This clock is specific to the analog input section of multiplexed devices. |
| AIConvertSource | Specifies the terminal of the signal to use as the AI Convert Clock. |
| AIConvertTimebaseDivisor | Specifies the number of AI Convert Clock Timebase pulses needed to produce a single AI Convert Clock pulse. |
| AIConvertTimebaseSource | Specifies the terminal of the signal to use as the AI Convert Clock Timebase. |
| ChangeDetectionDIFallingEdgePhysicalChannels | Specifies the names of the digital lines or ports on which to detect falling edges. The lines or ports must be used by virtual channels in the task. You also can specify a string that contains a list or range of digital lines or ports. |
| ChangeDetectionDIRisingEdgePhysicalChannels | Specifies the names of the digital lines or ports on which to detect rising edges. The lines or ports must be used by virtual channels in the task. You also can specify a string that contains a list or range of digital lines or ports. |
| ChangeDetectionDITristate | Specifies whether to tristate lines specified with ChangeDetectionDIRisingEdgePhysicalChannels and ChangeDetectionDIFallingEdgePhysicalChannels that are not in a virtual channel in the task. If you set this property to , NI-DAQmx tristates rising/falling edge lines that are not in a virtual channel in the task. If you set this property to , NI-DAQmx does not modify the configuration of rising/falling edge lines that are not in a virtual channel in the task, even if the lines were previously tristated. Set this property to to detect changes on lines in other tasks or to detect changes on output-only lines. |
| ChangeDetectionOverflowed | Indicates if samples were missed because change detection events occurred faster than the device could handle them. Some devices detect overflows differently than others. |
| DelayFromSampleClock | Specifies the amount of time to wait after receiving a Sample Clock edge before beginning to acquire the sample. This value is in the units you specify with DelayFromSampleClockUnits. |
| DelayFromSampleClockUnits | Specifies the units of DelayFromSampleClock. |
| DigitalFilterEnable | Specifies whether to apply a digital filter to the AI Convert Clock. |
| DigitalFilterMinimumPulseWidth | Specifies in seconds the minimum pulse width the filter recognizes. |
| DigitalFilterTimebaseRate | Specifies in hertz the rate of the digital filter timebase. NI-DAQmx uses this value to compute settings for the filter. |
| DigitalFilterTimebaseSource | Specifies the terminal of the signal to use as the timebase of the digital filter. |
| DigitalSynchronizationEnable | Specifies whether to synchronize recognition of transitions in the signal to the internal timebase of the device. |
| FirstSampleClockOffset | Specifies, in seconds, the offset to apply to the FirstSampleClockTime value. This offset modifies when the first sample clock occurs and is used to account for known delays in the signal path. |
| FirstSampleClockTime | Gets or sets the time of the first sample clock. |
| FirstSampleClockTimescale | Specifies the timescale to be used for the value of FirstSampleClockTime. |
| FirstSampleTimestamp | Gets the timestamp of the first sample. |
| FirstSampleTimestampEnable | Specifies whether to enable the first sample timestamp. |
| FirstSampleTimestampTimescale | Specifies the timescale to be used for the first sample timestamp. |
| HandshakeDelayAfterTransfer | Specifies the number of seconds to wait after a handshake cycle before starting a new handshake cycle. |
| HandshakeSampleInputDataCondition | Specifies on which edge of the Handshake Trigger an input task latches the data from the peripheral device. |
| HandshakeStartCondition | Specifies the point in the handshake cycle that the device is in when the task starts. |
| ImplicitUnderflowBehavior | Specifies the action to take when the onboard memory of the device becomes empty. |
| Item | Gets an instance of Timing that contains settings for only the specified devices. In Visual C#, this property is the indexer. |
| MasterTimebaseRate | Specifies the rate of the Master Timebase. |
| MasterTimebaseSource | Specifies the terminal of the signal to use as the Master Timebase. On an E Series device, you can choose only between the onboard 20MHz Timebase or the RTSI7 terminal. |
| OnDemandAOIsSimultaneous | Specifies whether to update all channels in the task simultaneously, rather than updating channels independently when you write a sample to that channel. |
| ReferenceClockRate | Specifies the frequency of the Reference Clock. |
| ReferenceClockSource | Specifies the terminal of the signal to use as the Reference Clock. |
| SampleClockActiveEdge | Specifies on which edge of a clock pulse sampling takes place. This property is useful primarily when the signal you use as the Sample Clock is not a periodic clock. |
| SampleClockDigitalFilterEnable | Specifies whether to apply the pulse width filter to the signal. |
| SampleClockDigitalFilterMinimumPulseWidth | Specifies in seconds the minimum pulse width the filter recognizes. |
| SampleClockDigitalFilterTimebaseRate | Specifies in hertz the rate of the pulse width filter timebase. NI-DAQmx uses this value to compute settings for the filter. |
| SampleClockDigitalFilterTimebaseSource | Specifies the input terminal of the signal to use as the timebase of the pulse width filter. |
| SampleClockDigitalSynchronizationEnable | Specifies whether to synchronize recognition of transitions in the signal to the internal timebase of the device. |
| SampleClockMaximumRate | Indicates the maximum Sample Clock rate supported by the task, based on other timing settings. For output tasks, the maximum Sample Clock rate is the maximum rate of the DAC. For input tasks, NI-DAQmx calculates the maximum sampling rate differently for multiplexed devices than simultaneous sampling devices. |
| SampleClockOverrunBehavior | Specifies the action to take if Sample Clock edges occur faster than the device can handle them. |
| SampleClockRate | Specifies the sampling rate in samples per channel per second. If you use an external source for the Sample Clock, set this input to the maximum expected rate of that clock. |
| SampleClockSource | Specifies the terminal of the signal to use as the Sample Clock. |
| SampleClockTerminal | Indicates the name of the internal Sample Clock terminal for the task. This property does not return the name of the Sample Clock source terminal specified with SampleClockSource. |
| SampleClockTimebaseActiveEdge | Specifies on which edge to recognize a Sample Clock Timebase pulse. This property is useful primarily when the signal you use as the Sample Clock Timebase is not a periodic clock. |
| SampleClockTimebaseDivisor | Specifies the number of Sample Clock Timebase pulses needed to produce a single Sample Clock pulse. |
| SampleClockTimebaseMasterTimebaseDivisor | Specifies the number of pulses of the Master Timebase needed to produce a single pulse of the Sample Clock Timebase. |
| SampleClockTimebaseRate | Specifies the rate of the Sample Clock Timebase. Some applications require that you specify a rate when you use any signal other than the onboard Sample Clock Timebase. NI-DAQmx requires this rate to calculate other timing parameters. |
| SampleClockTimebaseSource | Specifies the terminal of the signal to use as the Sample Clock Timebase. |
| SampleClockTimebaseTerminal | Indicates the name of the internal Sample Clock Timebase terminal for the task. This property does not return the name of the Sample Clock Timebase source terminal specified with SampleClockTimebaseSource. |
| SampleClockTimingResponseMode | Obsolete. Specifies how the device responds to the sample clock and to triggers. This property has been deprecated in favor of the ConfigurePipelinedSampleClock(String, Double, SampleClockActiveEdge, SampleQuantityMode, Int32) method. |
| SampleClockUnderflowBehavior | Specifies the action to take when the onboard memory of the device becomes empty. In either case, the sample clock does not stop. |
| SampleQuantityMode | Specifies if a task acquires or generates a finite number of samples or if it continuously acquires or generates samples. |
| SamplesPerChannel | Specifies the number of samples to acquire or generate for each channel if SampleQuantityMode is FiniteSamples. If SampleQuantityMode is ContinuousSamples, NI-DAQmx uses this value to determine the buffer size. |
| SampleTimingEngine | Specifies which timing engine to use for the task. |
| SampleTimingType | Specifies the type of sample timing to use for the task. |
| SinglePoint | Gets an instance of SinglePoint. |
| SynchronizationClockInterval | Specifies the interval, in Sample Clock periods, between each internal Synchronization Clock pulse. NI-DAQmx uses this pulse for synchronization of triggers between multiple devices at different rates. Refer to device documentation for information about how to calculate this value. |
| SynchronizationPulseMinimumDelayToStart | Specifies in seconds the amount of time that elapses after the master device issues the synchronization pulse before the task starts. |
| SynchronizationPulseResetDelay | Specifies in seconds the amount of time to wait after the Synchronization Pulse before resetting the ADCs or DACs on the device. When synchronizing devices, query SynchronizationPulseResetTime on all devices and note the largest reset time. Then, for each device, subtract the reset time from the largest reset time and set this property to the resulting value. |
| SynchronizationPulseResetTime | Indicates in seconds the amount of time required for the ADCs or DACs on the device to reset. When synchronizing devices, query this property on all devices and note the largest reset time. Then, for each device, subtract the value of this property from the largest reset time and set SynchronizationPulseResetDelay to the resulting value. |
| SynchronizationPulseSource | Specifies the terminal of the signal to use as the synchronization pulse. The synchronization pulse resets the clock dividers and the ADCs/DACs on the device. |
| SynchronizationPulseTerminal | Indicates the name of the internal Synchronization Pulse terminal for the task. This property does not return the name of the source terminal. |
| SynchronizationPulseTime | Indicates in seconds the delay required to reset the ADCs/DACs after the device receives the synchronization pulse. |
| SynchronizationPulseTimescale | Specifies the timescale to be used for timestamps for a sync pulse. |
| SynchronizationPulseTriggerTime | Gets or sets the start time of the synchronization pulse. |
| SynchronizationPulseType | Specifies the type of sync pulse used in the task. |