Set a frame trigger

Internal frame trigger

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

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

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.

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

In Trigger Selector select the desired activation mode.

In Trigger Activation select the desired trigger activation mode.
In Trigger Source select the desired input Line.
In Line Format select the electrical input signal.
In Signal detection select the detection mode.
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, FrameBurstStart, FrameBurstActive or FrameEnd
1	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
5	Digital I/O Line Selector	select the Trigger Source
6	Line Format	open the Drop-down menu and change the Line Format to your input signal

Trigger Selector

Frame start

The Trigger Selector → 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.

Frame active

Note

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

The Trigger Selector → 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 Trigger Selector → 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 trigger activation: Frame burst start

Frame burst active

The Trigger Selector → Frame burst active triggers the image acquisition after the Trigger delay lines and depending on the Trigger signal detection mode configuration as long as the signal is high. For example, when a short input trigger signal is utilized, just two frames are acquired, while a more extended trigger signal leads to the capture of five or six frames.

This function also requires a Frame End signal ON, the Trigger Source could be the Frame Burst Active Source End or an external Line (IO).

Diagram illustrating frame end, trigger delay lines, and gapless burst frame concept. — Input trigger activation: Frame burst active

Trigger activation

The TriggerActivation specifies the activation mode of the trigger.

Name	Description	Notes
RisingEdge	Specifies that the trigger is considered valid on the rising edge of the source signal.	This enum entry is valid and available only for LineStart or FrameStart or FrameBurstStart
FallingEdge	Specifies that the trigger is considered valid on the falling edge of the source signal.	This enum entry is valid and available only for FrameStart or FrameBurstStart
LevelHigh	Specifies that the trigger is considered valid if the level of the source signal is high.	This enum entry is valid and available only for FrameActive
LevelLow	Specifies that the trigger is considered valid if the level of the source signal is low.	This enum entry is valid and available only for FrameActive

Frame Start	Frame Burst Start	Frame Active

Trigger Source

The TriggerSource specifies the input line to use as a trigger source, please refer to the electrical installation.

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 four options are available:

PeakholderDetection

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

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 — *Debouncing4Lines*

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.

Debouncing4Clocks

Trigger Delay Lines

Specifies the delay in the number of lines to apply after the trigger reception before activating it.

Line Format

The Digital IO Control → Line Selector → Line Format controls the electrical format of the selected physical input. For the specific electrical format, please refer to the electrical installation.

Name	Description
NoConnect	The line is not connected.
SingleEnded_3V3	The line is single ended input or output for 3.3V. Input signals less than 1.5V are considered as level low, signals higher than 1.5V as level high.
SingleEnded_5	The line is single ended input for 5.0V or output for 3.3V. Input signals less than 2.5V are considered as level low, signals higher than 2.5V as level high.
SingleEnded_12V	The line is single ended input for 12.0V or output for 3.3V. Input signals less than 5.0V are considered as level low, signals higher than 5.0V as level high.
SingleEnded_24V	The line is single ended input for 24.0V or output for 3.3V. Input signals less than 5.0V are considered as level low, signals higher than 5.0V as level high.
RS422_NoTerm	The line is currently accepting or sending RS422 level signals with no electrical termination.
RS422	The line is currently accepting or sending RS422 level signals.
Misc	The line is a special one.