Scan Widths And Target Size - Ametek LAND LSP HD Series User Manual

User Guide

2.4 Scan Widths and Target Size

2.4.1 Scan Width
The full scan angle for the LSP Scanner is 80°, and the Scan Width (SW) can be
calculated as:
SW = (TD + 35) x 1.678 mm
or
SW = (TD +1.38) x 1.678 inches
Where 'TD' is the perpendicular Target Distance between the LSP window and the
target plane.
At the scan angle extremes (± 40°) the length of the Target Path (TP) between the
scanner and the target is:
TP = (TD + 35) / 0.766 mm
or
TP = (TD +1.38) / 0.766 inches
Note
The active scan angle may be set in the range 40 to 80°. See the Landscan
Configuration or WCA software guides for further information.
2.4.2 Target Size
The calculated Target Size is strictly only circular at a scan angle of zero degrees, i.e.
perpendicular to the instrument.
At all other scan angles, the target spot will be an ellipse. The elliptical target size is
shown in the following tables for the scan angle extremes (± 40°).
LSP Linescanner Head
HD
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