IviSpecAn_ConfigureVideoTrigger
IviSpecAnVideoTrigger Capability Group
C Function Prototype
ViStatus IviSpecAn_ConfigureVideoTrigger (ViSession vi, ViReal64 videoTriggerLevel, ViInt32 videoTriggerSlope);
Purpose
This function specifies the video level and polarity for video triggering. This is applicable when the trigger source is set to video.
Parameters
| Name | Type | Description |
|---|---|---|
| vi | ViSession | The ViSession handle that you obtain from the IviSpecAn_init or IviSpecAn_InitWithOptions function. The handle identifies a particular instrument session. Default Value: None |
| videoTriggerLevel | ViReal64 | Specifies the level of the video signal to trigger an acquisition. The driver uses this value to set the IVISPECAN_ATTR_VIDEO_TRIGGER_LEVEL attribute. Units: The units are specified by the IVISPECAN_ATTR_AMPLITUDE_UNITS attribute. Default Value: 0.0 |
| videoTriggerSlope | ViInt32 | Specifies the slope of the video signal to trigger an acquisition. The driver uses this value to set the IVISPECAN_ATTR_VIDEO_TRIGGER_SLOPE attribute. Valid Values: - IVISPECAN_VAL_VIDEO_TRIGGER_SLOPE_POSITIVE - Sets positive slope. - IVISPECAN_VAL_VIDEO_TRIGGER_SLOPE_NEGATIVE - Sets positive slope. Default value: IVISPECAN_VAL_VIDEO_TRIGGER_SLOPE_POSITIVE |