Datalogic lynx bt, Справочное руководство

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LYNX™ BT
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In case of low ambient light conditions, Lynx™ BT automatically activates the
illumination system. If desired, the illumination system can be enabled so that it is
always active.
2.5 CAMERA CONTROL
Exposure and Calibration
Two different control modes are available for managing the camera: automatic mode
and fixed mode.
The automatic mode provides three different options to get the best tuning of the
image to be captured:
- Automatic based on entire image: camera control mode based on the analysis of
the whole image. This mode works well in most standard applications. It is the
default setting.
- Automatic based on central image: camera control mode based on the analysis
of a restricted area positioned in the central zone of the image. This mode is
suggested when reading small codes positioned in a dark and extensive
background.
- Automatic for highly reflective surfaces: camera control mode allowing to read
codes on highly reflective surfaces. This mode is suggested, for example, when
reading codes positioned on plastic or metal surfaces.
The fixed mode is particularly suggested for expert users. It requires a camera
calibration to adjust the acquisition parameters to the ambient light conditions. The
defined values will always be used when working with a fixed exposure.
These values are permanently saved in the reader memory.
Refer to page 47 for configuration barcodes.
Aiming System Calibration
The factory-defined Lynx™ BT aiming system is already correctly and precisely
calibrated to the Lynx™ BT focus distance and therefore works for the most typical
applications. However, it is possible to modify the aiming system precision for the
following condition:
when a fixed reading distance different from the Lynx™ BT focus distance is
used. The Lynx™ BT focus distance is 115 mm for Lynx™ BT432, and 65 mm for
Lynx™ BT 432E.
Refer to the VisualSetup software program for performing the aiming system
calibration.
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