Spectra Precision Focus 30, Руководство пользователя

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6 Instrument Technology
80 Spectra Precision FOCUS 30 User Guide
divergence introduces a range error caused by the size of the sampling area, see
Figure 6-3 .
Fig. 6-3 Measuring to an inner and outer corner
Required
distance
Required
distance
Measured
distance
Measured
distance
Although the problem is reduced with a beam that uses a smaller measuring area, the
error can not be completely eliminated. The most accurate solution to measure to tight
corners and eliminate errors caused by beam divergence, is to use an offset measure-
ment method such as that used in the field application software.
Do the following;
1. Measure two points on the face of the building.
2. Aim the instrument at the corner to store the correct horizontal and vertical
angle, see
Figure 6-4 .