DAQmxCfgAnlgWindowStartTrig
int32 DAQmxCfgAnlgWindowStartTrig (TaskHandle taskHandle, const char triggerSource[], int32 triggerWhen, float64 windowTop, float64 windowBottom);
Purpose
Configures the task to start acquiring or generating samples when an analog signal enters or leaves a range you specify.
Parameters
| Input | |||||||||||
| Name | Type | Description | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| taskHandle | TaskHandle | The task used in this function. | |||||||||
| triggerSource | const char [] | The name of a virtual channel or terminal where there is an analog signal to use as the source of the trigger. For E Series devices, if you use a virtual channel, it must be the first channel in the task. The only terminal you can use for E Series devices is PFI0. |
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| triggerWhen | int32 | Specifies whether the task starts measuring or generating samples when the signal enters the window or when it leaves the window. Use windowBottom and windowTop to specify the limits of the window.
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| windowTop | float64 | The upper limit of the window. Specify this value in the units of the measurement or generation. | |||||||||
| windowBottom | float64 | The lower limit of the window. Specify this value in the units of the measurement or generation. |
Return Value
| Name | Type | Description |
|---|---|---|
| status | int32 | The error code returned by the function in the event of an error or warning. A value of 0 indicates success. A positive value indicates a warning. A negative value indicates an error. |