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6.3
The Frame Burst Start Trigger
(When reading this section, it is helpful to refer to Figure 44 on
The frame burst start trigger is used in conjunction with the frame start trigger to control the
acquisition of frames. In essence, the frame burst start trigger is used as an enabler for the frame
start trigger. Frame burst start trigger signals can be generated within the camera or may be applied
externally as software or hardware frame burst start trigger signals.
When the frame burst start trigger is enabled, the camera's initial acquisition status is "waiting for
frame burst start trigger". When the camera is in this acquisition status, it will ignore any frame start
trigger signals it receives. If a frame burst start trigger signal is applied to the camera, it will exit the
"waiting for frame burst start trigger" acquisition status and enter the "waiting for frame start trigger"
acquisition status. In this acquisition status, the camera can react to frame start trigger signals and
will begin to expose a frame each time a proper frame start trigger signal is applied.
A primary feature of the frame burst start trigger is that after a frame burst start trigger signal has
been applied to the camera and the camera has entered the "waiting for frame start trigger"
acquisition status, the camera will return to the "waiting for frame burst start trigger" acquisition
status once a specified number of frame start triggers has been received. Before more frames can
be acquired, a new frame burst start trigger signal must be applied to the camera to exit it from
"waiting for frame burst start trigger" status. Note that this feature only applies when the Trigger
Mode parameter for the frame burst start trigger is set to on. This feature is explained in greater
detail in the following sections.
6.3.1
Frame Burst Start Trigger Mode
The main parameter associated with the frame burst start trigger is the Trigger Mode parameter.
The Trigger Mode parameter for the frame burst start trigger has two available settings: off and on.
6.3.1.1
Frame Burst Start Trigger Mode = Off
When the Trigger Mode parameter for the frame burst start trigger is set to off, the camera will
generate all required frame burst start trigger signals internally, and you do not need to apply frame
burst start trigger signals to the camera.
6.3.1.2
Frame Burst Start Trigger Mode = On
When the Trigger Mode parameter for the frame burst start trigger is set to on, the camera will
initially be in a "waiting for frame burst start trigger" acquisition status and cannot react to frame start
trigger signals. You must apply a frame burst start trigger signal to the camera to exit the camera
from the "waiting for frame burst start trigger" acquisition status and enter the "waiting for frame start
trigger" acquisition status. The camera can then react to frame start trigger signals and will continue
to do so until the number of frame start trigger signals it has received is equal to the current
Basler ace USB 3.0
Image Acquisition Control
page
87.)
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