Using A Software Acquisition Start Trigger; Introduction; Setting The Parameters Related To Software Acquisition Start; Triggering - Basler GIGE VISION ace acA640-100gm/gc Manual

Area scan cameras

Table of Contents

6.3.4

6.3.4.1

If the camera's Acquisition Start Trigger Mode parameter is set to on and the Acquisition Start

Trigger source parameter is set to software, you must apply a software acquisition start trigger to

the camera before you can begin frame acquisition.

A software acquisition start trigger is applied by:

Setting the Trigger Selector parameter to Acquisition Start.

Executing a Trigger Software command.

The camera will initially be in a "waiting for acquisition start trigger" acquisition status, and it cannot

react to frame trigger signals when in this acquisition status. When a software acquisition start

trigger signal is received by the camera, it will exit the "waiting for acquisition start trigger"

acquisition status and will enter the "waiting for frame start trigger" acquisition status. It can then

react to frame start trigger signals. When the number of frame start trigger signals received by the

camera is equal to the current Acquisition Frame Count parameter setting, the camera will return to

the "waiting for acquisition start trigger" acquisition status. If a new software acquisition start trigger

signal is applied to the camera, it will again exit from the "waiting for acquisition start trigger"

acquisition status and enter the "waiting for frame start trigger" acquisition status.

(Note that as long as the Trigger Selector parameter is set to Acquisition Start, a software

acquisition start trigger will be applied to the camera each time a Trigger Software command is

executed.)

6.3.4.2

You can set the all of parameters needed to perform software acquisition start triggering from within

your application software by using the pylon API. The following code snippet illustrates using the

API to set the parameter values and execute the commands related to software acquisition start

triggering with the camera set for continuous frame acquisition mode:

// Set the acquisition mode to continuous. The acquisition mode must

// be set to continuous when the frame start trigger mode is set to on.

Camera.AcquisitionMode.SetValue( AcquisitionMode_Continuous );

// Select the acquisition start trigger

Camera.TriggerSelector.SetValue( TriggerSelector_AcquisitionStart );

// Set the mode for the selected trigger

Camera.TriggerMode.SetValue( TriggerMode_On );

// Set the source for the selected trigger

Camera.TriggerSource.SetValue ( TriggerSource_Software );

// Set the acquisition frame count

Camera.AcquisitionFrameCount.SetValue( 5 );

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