50
Shade
Shade patterns on the staff normally do not affect
the measured results. Extremely dark shade can
have the same effects as an interfering cover has
on the field-of-view.
Focus
A slightly unfocussed image does not influence the
measuring time and the accuracy. When large focus
errors occur, measurement is stopped.
Measuring through window panes
Avoid measuring through window panes.
Precision Mode for line levelling
The Precision Mode is meant as a helpful tool to
increase measuring accuracy. The Precision Mode
should be activated for line levelling jobs that
require high accuracy.Further details are on
page 15.
Important instrument settings
Before starting any measurement, use the list to
check how the measurement is to proceed and
what corrections have to be made. Set or change
the relevant instrument parameters.
•
Current line-of-sight error ok?
•
Earth curvature correction on or off?
•
Which measurement mode to use?
The collimation error entered into the instrument is
automatically applied as a correction to every rea-
ding of the staff.
There are two ways of determining the line-of-sight
error:
1
Using the integrated field level test procedure or
the laboratory test with the collimator
(DNA03 only). See Check & Adjust, resp. check
with collimator.
2
Determine the values through your own
measurements and procedures and enter them
manually ([MENU]/ All settings/ System).
The earth curvature correction can be switched on
or off. [MENU]/ Quick settings.
