Linea Lite GigE Series Camera
Camera Performance and Features
•
41
External Triggers
feature selects the type of external trigger to use and configure.
Figure 32: CamExpert – Trigger Selector
Three types of external trigger are available:
•
Single Line Trigger (Start): Starts the acquisition of one line when the acquisition is active.
While the Single Line Trigger is active image frame buffers will continuously be filled. If the
trigger stops while capturing a frame, a partial frame will be acquired and the remaining lines
filled with pixel value 0. The next trigger following a pause will start a new frame.
•
Single Frame Trigger (Start): Starts the acquisition of one frame when the acquisition is
active.
•
MultiFrame Trigger (Start): Burst start trigger starts the capture of a number of frames. No
line is lost between frames. The number of frames in this burst mode is defined by the
Note: The Single Frame Trigger and MultiFrame Trigger are mutually exclusive;
that is, only one type of frame trigger may be used at a time.
Single Frame Trigger
The following timing diagram shows an example of grabbing images (
frame trigger to define when an image line is stored at the beginning of the frame buffer.
In this example, the single frame trigger is configured for rising edge. The single line acquisition
trigger can be generated by an external trigger, timestamp modulo or internal clock (free-running).
Single Frame
Trigger Start
Valid Single Line
Trigger Accepted
= Line ignored
= Line accepted
Frame
acquired
Frame
acquired
Frame
acquired
Figure 33: 10-Line Single Frame Trigger Example