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Reader Adjustments
You can adjust the scan beam after the Reader is installed. Online
adjustments can affect the width and location of the scan beam. Use
these adjustments to fine-tune an application, not to compensate for
improper installation. Chapter 6 describes how to make these
adjustments.
Scan Angle adjusts the beam width.
Scanner
2755-SN3
2755-SN5
2755-SN8
Usable scan angle is 80% of the optical scan angle.
Contact your Allen-Bradley representative for availability.
Elevation (linear scanning only) adjusts the vertical angle at
which the scan beam exits the Reader.
Center Line
Upper and Lower Raster Angles (raster scanning only) adjusts
the highest and lowest raster angles. The range for each angle is
10 to -10_. The lower raster angle must be equal to or less than
the upper raster angle.
Center Line
Installation Considerations
Optical Scan Angles
22_ to 72_
20_ to 50_
18_ to 30_
Elevation can be adjusted
10_ from center line.
Upper Raster Angle 10_
from center line.
Lower Raster Angle 10_
from center line.
2–7
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