User`s guide
3 Using the Image Acquisition Tool GUI
3-22
4
Select your Trigger Source. This indicates the hardware source that is monitored
for trigger conditions. When the condition specified in Trigger Condition is met,
the trigger is executed and the acquisition starts. Trigger Source is device-specific.
The drop-down list will show the mechanisms your particular device uses to generate
triggers. For example, it might be something like Port0 and Port1, or OptoTrig
and TTL.
5
Select your Trigger Condition. This specifies the condition that must be met, via
the Trigger Source, before a trigger event occurs. Trigger Condition is device-
specific. The drop-down list will show the conditions your particular device uses
to generate triggers. For example, it might be something like risingEdge and
fallingEdge.
6
Click the Start Acquisition button to get live feed from the device.
7
When the Trigger Condition is met, the acquisition begins.
If you have a defined number of triggers (not infinite), then the acquisition will stop
when you have acquired that number of frames, based on the Frames Per Trigger
field on the General tab.
If Number of Triggers is set to infinite, use the Stop Acquisition button to
stop the acquisition.
Setting a Region of Interest
By default your acquisition will consist of the entire frame that the device acquires,
which is equal to the selected format's resolution. If you want to acquire a portion of
the frame, use the Region of Interest tab to set the desired region. The ROI window
defines the actual size of the frame logged by the tool, measured with respect to the top-
left corner of an image frame.
You can set a Region of Interest (ROI) manually by using the Manual Configuration
settings on the Region of Interest tab, or interactively in the Preview Window.
Setting Region of Interest Manually
To set up an ROI manually using the Manual Configuration field on the Region of
Interest tab:
1
Start your preview by clicking the Start Preview button in the Preview Window.
2
Adjust one or more of the X-Offset, Y-Offset, Width, or Height settings until you
reach the desired region.