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      Set a frame trigger
      • 26 Sep 2024
      • 2 Minutes to read
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      Set a frame trigger

      • Updated on 26 Sep 2024
      • 2 Minutes to read
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      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:


      Step

      Feature name

      Value

      1

      Trigger Selector

      FrameActive

      2

      Trigger Mode

      Off

      3

      Trigger Selector

      FrameStart

      4

      Trigger Mode

      Off

      5

      Trigger Selector

      LineStart

      6

      Trigger Mode

      Off

      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:

      Step

      Feature name

      Value

      1

      TriggerSelector

      FrameStart, FrameActive or FrameBurstStart

      TriggerMode

      On

      2

      TriggerSource

      e.g. Line 3 or Line 4

      3

      TriggerActivation

      level high/level low,
      rising edge or falling edge

      4

      TriggerDelayLines

      <number of lines>

      5

      TriggerSignalDetectionMode

      peakholder detection,
      debouncing 4 clocks,
      debouncing 4 lines,
      debouncing 60 lines

      6

      Digital I/O Line Selector 

      select the trigger source 

      7

      Line 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_03

      Input 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

      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_03

      Input 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 detection

      Debouncing4Lines

      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 detection

      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 detection

      Debouncing60Lines

      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_02

      Debouncing4Clocks

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