Basler A400K Bedienungsanleitung PDF herunterladen (Seite 64)

Acquisition Control AW00118501000

56 Basler racer Camera Link

You should set Exposure Overlap Time Max to represent the shortest exposure time you intend to

use. For example, assume that you will be using trigger width exposure mode and that you intend

to use the ExLSTrig signal to vary the exposure time in a range from 3000 µs to 5500 µs. In this

case you would set the camera’s Exposure Overlap Time Max to 3000 µs.

For more information about the Line Trigger Wait signal, see Section 6.3.3 on page 64

6.1.5.3 Setting the Parameters Related to Hardware Line Start

Triggering and Applying a Hardware Trigger Signal

Setting the Parameters Using Basler pylon and Applying the Signal

You can set all of the parameters needed to perform hardware line 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 hardware line start triggering with the camera set for the timed exposure mode

with rising edge triggering and CC1 as the trigger source.

// Disable the acquisition line rate parameter (this will disable the camera’s

// internal line rate control and allow you to control the line rate with

// external line start trigger signals)

Camera.AcquisitionLineRateEnable.SetValue( false );

// Select the line start trigger

Camera.TriggerSelector.SetValue( TriggerSelector_LineStart );

// Set the mode for the selected trigger

Camera.TriggerMode.SetValue( TriggerMode_On );

// Set the source for the selected trigger

Camera.TriggerSource.SetValue ( TriggerSource_CC1 );

// Set the trigger activation mode to rising edge

Camera.TriggerActivation.SetValue( TriggerActivation_RisingEdge );

// Set for the timed exposure mode

Camera.ExposureMode.SetValue( ExposureMode_Timed );

// Set the exposure time

Camera.ExposureTimeAbs.SetValue( 300 );

// Line acquisition will start each time the externally generated

// line start trigger signal (ExLSTrig signal)goes high

The following code snippet illustrates using the API to set the parameter values and execute the

commands related to hardware line start triggering with the camera set for the trigger width

exposure mode with rising edge triggering and with line CC1 as the trigger source.

// Disable the acquisition line rate parameter (this will disable the camera’s

// internal line rate control and allow you to control the line rate with

// external line start trigger signals)

Camera.AcquisitionLineRateEnable.SetValue( false );

// Select the line start trigger

Camera.TriggerSelector.SetValue( TriggerSelector_LineStart );

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Basler A400K Bedienungsanleitung Seite 64