Setting The Frame Start Trigger Mode And Related Parameters - Basler acA2040-55 User Manual

Image Acquisition Control
For more information about using a hardware trigger to control frame acquisition start, see
Section 6.4.3 on page
By default, input line Line 1 is selected as the source signal for the frame start
trigger.
Keep in mind that the camera will only react to frame start trigger signals when it
is in a "waiting for frame start trigger" acquisition status. For more information
about the acquisition status, see Section 6.1 on
page 115.
Exposure Time Control with the Frame Start Trigger On
When the TriggerMode parameter for the frame start trigger is set to on and the TriggerSource
parameter is set to software, the exposure time for each frame acquisition is determined by the
value of the camera's ExposureTime parameter.
When the TriggerMode parameter is set to on and the TriggerSource parameter is set to input line
Line 1, the exposure time for each frame acquisition can be controlled with the ExposureTime
parameter or it can be controlled by manipulating the hardware trigger signal.
For more information about controlling exposure time when using a software trigger, see
Section 6.4.2 on page
For more information about controlling exposure time when using a hardware trigger, see
Section 6.4.3 on page
6.4.1.3

Setting The Frame Start Trigger Mode and Related Parameters

When setting the TriggerMode parameter, make sure the camera is not acquiring
images. Otherwise, the camera might crash.
You can set the Trigger Mode and related parameter values for the frame start trigger from within
your application software by using the Basler pylon API. If your settings make it necessary, you can
also set the TriggerSource parameter.
The following code snippet illustrates using the API to set the TriggerMode for the frame start trigger
to on and the TriggerSource to input line Line 1:
// Select the frame start trigger
camera.TriggerSelector.SetValue(TriggerSelector_FrameStart);
// Set the trigger mode for the selected trigger
Camera.TriggerMode.SetValue( TriggerMode_On );
// Set the source for the selected trigger
Camera.TriggerSource.SetValue( TriggerSource_Line1 );
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128.
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AW00123409000
page 109 and Section 6.3 on
Basler ace USB 3.0