Microscan QX Hawk Bedienungsanleitung Seite 221

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QX Hawk Industrial Imager User Manual 5-123
Parameters
Focus Position (Standard QX Hawk Only)
Since the focus can be configured by simply entering the target distance value from the
imager, normally the user will configure the focus without requiring calibration. However, if it is
necessary to calibrate the focus distance there are two methods to accommodate this task.
Don’t Calibrate
The focus position is fixed and is not part of the calibration process.
Calibrate
The focus position will be calibrated to provide the best image quality and performance.
This method is a simply “Search” method that tries to identify the desired focus through a
search algorithm that cycles through focus settings, with a configuration of camera settings
to try and locate as quickly as possible the desired focus. This is accomplished when a
symbol is decoded. Once a focus distance has been located that will successfully decode
a symbol, the algorithm will fine tune the search to locate the inside and outside focal distances.
The final focus distance is selected as the focus distance that is in the center of these two
values. This method can be time consuming if the focus is not found on the 1st pass.
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