Leica DNA03 User Manual page 16

• Precision Mode: "Precise" is activated in the
tolerance-settings for line levelling, the
instrument monitors the distance of the height
reading (Ziellinie) to both ends of staff, top and
bottom. The reduced number of staff code
elements may slightly lower the measuring
accuracy of measurements taken on the edge
of the staff. If the distance is less than 50cm a
warning is displayed. When this mode is
activated, the top and bottom limits of the staff
are automatically converted to a 3m Invar staff.
In order to use different staff sizes, the limit
values can be manuallly adjusted. The
precision mode also monitors measuring
distances critical to the staff. These distances
depend on the physical properties of the
instrument and of the staff. The measuring
accuracy of height measurements within these
distance ranges may also be slightly lower. A
warning is displayed if the measuring distance
is within the following ranges: 13.250m -
13.500m and 26.650m - 26.900m. The
Precision Mode is meant as a helpful tool to
increase measuring accuracy. Activating
Precision Mode for line levelling with typical
accuracy is possible hut not necessary.
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