Stonex R25/R25LR Total Station - User Manual 55
8.3. Free station
This application is used to determine the instrument position from measurements of known point (minimum two,
maximum five).
The following measurements sequences to target points are possible:
• Horizontal and vertical angles only;
• Distances and horizontal and vertical angles;
• Horizontal and vertical angles to some point(s) and horizontal and vertical angles plus distances to
other point(s).
The final computed results are Easting, Northing and Height of the present instrument station, including the
instruments Horizontal Circle Orientation. Standard deviations and residuals for accuracy assessments are provided.
COMPUTATION PROCEDURE:
• The measuring procedure automatically determines the method of evaluation.
• Easting and northing is determined by the method of least squares, including standard deviation and
improvements for horizontal direction and horizontal distances.
• The final height (H) is computed from averaged height differences based on the original
measurements.
Before starting, in the start-up program menu it is required to set an accuracy limit: press F2 to enter the accuracy
setting.
Here:
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