Leica Geosystems TPS1100 Professional Series - User Manual - Manual (Page 14)

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TPS1100 - User Manual 2.2.1en Description of the system
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The optional "Extended Range (XR)"-
laser is a visible red laser with
in-creased measurement range. The
coaxial XR - laser makes it possible
to measure distances over 170 m
(560 ft) reflectorless and over 10 km
(6.2 miles) to one prism (refer to the
chapter "Technical specifications").
The operation of an XR - instrument
is equivalent to a conventional TPS
with red laser. Please consider the
following points when measuring with
the XR - laser (RL & Long Range).
The objective lens should
always be clean. Dirt on the
lens (dust, fingerprints, ...) can lead
to reduced accuracy.
Reflectorless
Be sure that the laser beam
is not reflected by anything
close to the line of sight (e.g. highly
reflective objects).
Extended Range (Option)
Long Range to prisms
WARNING:
Due to laser safety
regulations and measuring
accuracy, using the Long Range Pro-
gram is only allowed to prisms that
are more than 1000 m (3300 ft) away.
Whenever possible accurate
measurements to prisms
should be made with the standard
program (IR).
Long Range to reflector tape
The Long Range Program can also
measure to reflector tape. To guaran-
tee the accuracy the laser beam
must be perpendicular to the reflector
tape and the XR - laser must be well
adjusted (refer to the chapter
"Checking and adjusting").
When a distance
measurement is triggered,
the EDM measures to the object
which is in the beam path at that
moment. In case of temporary
obstruction (e.g. a passing vehicle) or
heavy rain, fog or snow, the EDM
may measure to the obstruction.
When measuring longer dis-
tances, any divergence of
the red laser beam from the line of
sight might lead to less accurate
measurements. This is because the
laser beam might not be reflected
from the point at which the
crosshairs are pointing.
Therefore, it is recommended to ver-
ify that the XR - laser is well colli-
mated with the telescope line of sight
(refer to the chapter "Checking and
adjusting"). This should be done at
regular intervals.
Do not measure with two
instruments to the same
target simultaneously.