AnalogEdgeStartTrigger Class
- Updated2023-02-21
- 4 minute(s) read
Contains properties to configure analog edgestart triggers. For more information, refer to StartTrigger.
Inheritance Hierarchy
SystemObject
SystemMarshalByRefObject
NationalInstruments.DAQmxAnalogEdgeStartTrigger
SystemMarshalByRefObject
NationalInstruments.DAQmxAnalogEdgeStartTrigger
Namespace: NationalInstruments.DAQmx
Assembly: NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.45.49302
Syntax
public class AnalogEdgeStartTrigger : MarshalByRefObject, IFilteredTypeDescriptor
Public Class AnalogEdgeStartTrigger Inherits MarshalByRefObject Implements IFilteredTypeDescriptor
The AnalogEdgeStartTrigger type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
 | Coupling | Specifies the coupling for the source signal of the trigger if the source is a terminal rather than a virtual channel. |
| DigitalFilterEnable | Specifies whether to apply a digital filter to the digital output of the analog triggering circuitry (the Analog Comparison Event). When enabled, the analog signal must stay above or below the trigger level for the minimum pulse width before being recognized. Use filtering for noisy trigger signals that transition in and out of the hysteresis window rapidly. |
| 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. |
| Hysteresis | Specifies a hysteresis level in the units of the measurement or generation. If Slope is Rising, the trigger does not deassert until the source signal passes below Level minus the hysteresis. If Slope is Falling, the trigger does not deassert until the source signal passes above Level plus the hysteresis. Hysteresis is always enabled. Set this property to a non-zero value to use hysteresis. |
| Level | Specifies at what threshold in the units of the measurement or generation to start acquiring or generating samples. Use Slope to specify on which slope to trigger on this threshold. |
| Slope | Specifies on which slope of the trigger signal to start acquiring or generating samples. |
| Source | Specifies the name of a virtual channel or terminal where there is an analog signal to use as the source of the Start Trigger. |
Methods
| Name | Description | |
|---|---|---|
 | CreateObjRef | Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject.) |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetLifetimeService | Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| InitializeLifetimeService | Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| MemberwiseClone(Boolean) | Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject.) |
| ToString | Returns a string representation of the object. (Overrides ObjectToString.) |
Remarks
 Tip |
|---|
| Example applications are located in the Public Documents\National Instruments\NI-DAQ\Examples\DotNET4.x directory or in the Start menu at National InstrumentsNI-DAQmxNI-DAQmx Examples. |
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.