Image Acquisition Control AW00123409000124 Basler ace USB 3.0For more information about using a hardware trigger to control frame acquisition start, seeSection 6.4.3 on page 128.Exposure Time Control with the Frame Start Trigger OnWhen the TriggerMode parameter for the frame start trigger is set to on and the TriggerSourceparameter is set to software, the exposure time for each frame acquisition is determined by thevalue of the camera’s ExposureTime parameter.When the TriggerMode parameter is set to on and the TriggerSource parameter is set to input lineLine 1, the exposure time for each frame acquisition can be controlled with the ExposureTimeparameter or it can be controlled by manipulating the hardware trigger signal.For more information about controlling exposure time when using a software trigger, seeSection 6.4.2 on page 126.For more information about controlling exposure time when using a hardware trigger, seeSection 6.4.3 on page 128.6.4.1.3 Setting The Frame Start Trigger Mode and Related ParametersYou can set the Trigger Mode and related parameter values for the frame start trigger from withinyour application software by using the Basler pylon API. If your settings make it necessary, you canalso set the TriggerSource parameter.The following code snippet illustrates using the API to set the TriggerMode for the frame start triggerto on and the TriggerSource to input line Line 1:// Select the frame start triggercamera.TriggerSelector.SetValue(TriggerSelector_FrameStart);// Set the trigger mode for the selected triggerCamera.TriggerMode.SetValue( TriggerMode_On );// Set the source for the selected triggerCamera.TriggerSource.SetValue( TriggerSource_Line1 );By default, input line Line 1 is selected as the source signal for the frame starttrigger.Keep in mind that the camera will only react to frame start trigger signals when itis in a "waiting for frame start trigger" acquisition status. For more informationabout the acquisition status, see Section 6.1 on page 109 and Section 6.3 onpage 115.When setting the TriggerMode parameter, make sure the camera is not acquiringimages. Otherwise, the camera might crash.
