Contents x
      Set a frame trigger
      • 13 Jan 2024
      • 2 Minutes to read
      • Print
      • PDF
      Contents

      Set a frame trigger

      • Updated on 13 Jan 2024
      • 2 Minutes to read
      • Print
      • PDF
      Article Summary

      Internal frame trigger

      The internal frame trigger provides a continuous signal after each acquired image.

      1. In the Configuration window navigate to Acquisition Control → Frame Trigger.
      2. Below Internal select the Generate frame trigger continuously after each acquired image checkbox.


      Internal frame trigger  Alternatively, you can set the internal frame trigger in the camera feature tree by executing the following steps:


      StepFeature nameValue
      1Trigger SelectorFrameActive
      2Trigger ModeOff
      3Trigger SelectorFrameStart
      4Trigger ModeOff
      5Trigger SelectorLineStart
      6Trigger ModeOff

      External frame trigger

      The external frame trigger can be provided by a light barrier.

      1. In the Configuration window navigate to Acquisition Control → Frame Trigger.
      2. Below External select the Use external source to generate frame trigger checkbox.


      1. In Trigger Selector select the desired activation mode. Refer to trigger selector. 
      1. In Trigger Activation select the desired trigger activation mode. 
      2. In Trigger Source select the desired input Line. Refer to electrical installation.
      3. In Line Format select the electrical input signal. Refer to electrical installation. 
      4. In Signal detection select the detection mode. Refer to trigger signal detection.
      5. In Trigger Delay Lines input the delay of the trigger in lines. 

      Alternatively, you can set the external frame trigger in the camera feature tree by executing the following steps:

      StepFeature nameValue
      1TriggerSelectorFrameStart, FrameActive or FrameBurstStart
      TriggerModeOn
      2TriggerSourcee.g. Line 3 or Line 4
      3TriggerActivationlevel high/level low,
      rising edge or falling edge
      4TriggerDelayLines<number of lines>
      5TriggerSignalDetectionModepeakholder detection,
      debouncing 4 clocks,
      debouncing 4 lines,
      debouncing 60 lines
      6Digital I/O Line Selector select the trigger source 
      7Line Format open the drop-down menu and change the Line Format to your input signal

      Trigger Selector

      Frame start

      The Input signal activation → Frame start triggers the image acquisition after the Trigger delay lines and depending on the Trigger signal detection mode configuration for the duration of the image height setting. One frame trigger creates one image with a constant image height. 

      svg-signal diagram-signal frame start_03Input signal activation: Frame start 

      Frame active

      Note
      This configuration is only for the GigE Version available. CxP does not support this configuration. 

      The Input signal activation → Frame active triggers the image acquisition after the Trigger delay lines and depending on the Trigger signal detection mode configuration for the duration of the Trigger signal. One Frame trigger creates one image with the length of the frame active signal. 

      svg-signal diagram-signal frame active_03
      Input signal activation: Frame active
       Frame burst start

      Note
      In Frame burst start mode the camera acquires multiple gapless images.  

      The Input signal activation → Frame burst start triggers the image acquisition after the Trigger delay lines and depending on the Trigger signal detection mode configuration for multiple times the duration of the image height setting. One frame burst creates multiple images with a constant image height.

      The number of acquired images is set under Acquisistion Control → Acquisistion Burst Frame Count.

      svg-signal diagram-frame burst start_03Input signal activation: Frame burst

      Trigger signal detection mode

      The camera supports four different Trigger signal detection modes. This configuration parameter defines the signal debouncing of the frame trigger input signal. 

      To set the Trigger signal detection navigate to the camera feature tree → Acquisition control → Trigger selector. The following 4 options are available:

      PeakholderDetection 

      The Trigger signal detection mode → PeakholderDetection detects every small input signal and starts the image acquisition immediately.

      svg-signal diagram-peakholder detectionPeakholder DetectionDebouncing4Lines

      The Trigger signal detection mode → Debouncing4Lines requires a 4 line stable trigger input signal, this leads to an image delay of 4 lines.

      svg-signal diagram-4 image lines detectionDebouncing4Lines Debouncing60Lines

      The Trigger signal detection mode → Debouncing60Lines requires a 60 line stable trigger input signal, leading to an image delay of 60 lines.

      svg-signal diagram-60 image lines detectionDebouncing60Lines

      Debouncing4Clocks (not recommended) 

      The Trigger signal detection mode → Debouncing4Clocks requires a 4 clocks (clks) stable trigger input signal, leading to an image delay of 4 clocks. 

      svg-signal diagram-4 clock pulses_02Debouncing4Clocks
      Was this article helpful?
      What's Next