Setting The Frame Start Trigger Mode And Related Parameters - Basler ace acA640-90gm User Manual

Image Acquisition Control
By default, input 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 7.1 on
page 69.
Exposure Time Control with the Frame Start Trigger On
When the Trigger Mode parameter for the frame start trigger is set to on and the Trigger Source
parameter is set to software, the exposure time for each frame acquisition is determined by the
value of the camera's Exposure Time Abs parameter.
When the Trigger Mode parameter is set to on and the Trigger Source parameter is set to input line
1, the exposure time for each frame acquisition can be controlled with the Exposure Time Abs
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 7.4.2 on page
For more information about controlling exposure time when using a hardware trigger, see
Section 7.4.3 on page
7.4.1.3

Setting The Frame Start Trigger Mode and Related Parameters

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 Trigger Source parameter.
The following code snippet illustrates using the API to set the Trigger Mode for the frame start
trigger to on and the Trigger Source to input line 1:
// Select the frame start trigger
Camera.TriggerSelector.SetValue( TriggerSelector_FrameStart );
// Set the mode for the selected trigger
Camera.TriggerMode.SetValue( TriggerMode_On );
// Set the source for the selected trigger
Camera.TriggerSource.SetValue ( TriggerSource_Line1 );
78
80.
82.
page 63 and Section 7.3 on
Basler ace GigE