2 focus value, 3 auto exposure, 2 focus value 4.3.3 auto exposure – Banner PresencePLUS P4 COLOR Series User Manual
Page 29: Focus value, Auto exposure

Description
Trigger Option
Images are acquired only in reponse to a signal from an external source as configured on the
Trigger tab. Choose External if the part will be moving during the inspection to capture an
image with the same conditions as the inspection conditions.
External
Images are acquired only then the Trigger button is clicked. The Trigger button is grayed
out when any trigger option other than Manual is selected.
Manual
If you check this option, the a Trigger button allows you to browse for an image to load
from disk.
From Disk
Note: The trigger options described above are used only in the Setup routine. Note, though, that Run mode does
require an external trigger.
4.3.2 Focus Value
The Focus value on the Focus tab is a number between 1 and 255.
To focus the lens, place the target object so that the area to be focused appears
on the center of the displayed image. You can use the image on the PC to
determine when the image is sharp enough, or you can use this Focus value
as a guide. Turn the focus ring on the lens until the Focus value is at the highest
possible number between 1 and 255. Note there is no optimal value for this
number, but it can be used as a guide if setting up more than one camera
focused on the same target.
4.3.3 Auto Exposure
When you click Start in Auto Exposure, the exposure time and gain are optimized for the current inspection and the
Status field provides feedback.
Description
Field
The following are status possibilities:
Status
• Not running -- Auto exposure has not been activated since entering this screen.
• Running -- Auto exposure is currently running.
• Finished -- Auto exposure has run and is complete.
• Image too dark -- Auto exposure could not brighten the image enough. Add more light
to the inspection, or increase the exposure manually.
29
Minneapolis, MN USA
Banner Engineering Corp.
Setup
2/2010