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BC207 Series Chapter 5: The Graphics User Interface (GUI)
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5.5.4.5 Approximate Ellipse
Enable the Approximate Ellipse check box in order to get the best fitted beam ellipse. This
setting provides more stable and reliable ellipse results.
Otherwise, ellipse data are retrieved from single minimum and maximum diameters of the ellip-
tical beam cross section. These results are more noisy and therefore less reliable than the fitted
results.
5.5.4.6 Autoscale to Peak
Enable the " Autoscale to Peak" check box to scale the X and Y profiles to their peak intensit-
ies. Disabling will scale the X and Y profiles to the value of AD saturation.
5.5.4.7 Profile Cut Position
The profile cut position determines the location of the crosshair in the 2D Projection .
The position of these X and Y cross sections can be fixed to the ROI Center, to the centroid, to
the peak, or to a user defined position.
For the user defined position, the X and Y positions are to be entered numerically.
5.5.4.8 Reference Position
The reference position influences the calculation results. Peak and Centroid positions refer to
the reference position. By default, the reference position is set to the sensor center. In the 2D
Projection window it is displayed as a grey crosshair.
The Reference Position can be set to predefined positions (see above) or to a user defined po-
sition. The X and Y coordinates of a user defined position are to be entered numerically or set
in the
2D Projection (Reference Position Editor):
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