AnalogWindowStartTrigger Class
- Updated2026-02-03
- 2 minute(s) read
Contains properties to configure analog window start triggers. For more information, refer to StartTrigger.
Derives from
- MarshalByRefObject
- IFilteredTypeDescriptor
Syntax
Namespace: NationalInstruments.DAQmx
public class AnalogWindowStartTrigger : MarshalByRefObject, IFilteredTypeDescriptor
Remarks
Example applications are located in the <Public Documents>\National Instruments\NI-DAQ\Examples\DotNET4.x directory or in the Start menu at National Instruments»NI-DAQmx»NI-DAQmx Examples.
Thread Safety
All members of this type are safe for multithreaded operations.
Properties
| Name | Description |
|---|---|
| Condition | Specifies whether the task starts acquiring or generating samples when the signal enters or leaves the window you specify with WindowBottom and WindowTop. |
| 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 within the trigger window for the minimum pulse width before being recognized. Use filtering for noisy trigger signals that transition in and out of the 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. |
| 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. |
| WindowBottom | Specifies the lower limit of the window. Specify this value in the units of the measurement or generation. |
| WindowTop | Specifies the upper limit of the window. Specify this value in the units of the measurement or generation. |
Methods
| Name | Description |
|---|---|
| ToString() | Returns a string representation of the object. |