8
Usage precautions xxxx xxxxxxxxx
Surveying instruments are high-precision instruments. In order to assure that the Electronic
Total Station R-2500DN product which you have purchased will provide long-lasting
maximum
performance, the precautions in this manual must be followed. Make sure to follow these
instructions and use this product properly at all times.
[Solar observation]
WARNING
Never view the sun directly using the telescope as this may result in loss of sight.
Never point the objective lens directly at the sun as this may damage internal components.
When using the instrument for solar observation, be sure to attach the specially designed solar
filter (MU64) to the objective lens.
[Laser beam]
Do not stare into the laser beam. R-2500DN is a Class IIIa (3R) Laser product.
[EDM axis]
The R-2500DN EDM is the red visible laser beam and the beam diameter is very small.
The beam is emitted from the objective centre. The EDM axis is designed to coincide with the
telescope sight axis (but both axes may deviate slightly because of intense temperature
changes and a long time lapse).
[Target constant]
Confirm the Target Constant of the instrument before measurement.
If a different constant is to be used, use the correct constant of the target. The constant is
stored in the instrument's memory when turned off.
[Reflectorless and reflector sheet]
• Reflectorless
The measurement range and accuracy of the Reflectorless mode are based on the condition
that laser beam is emitted perpendicular to the white side of a Kodak Gray Card.
The measurement range may be influenced by the shape of the target and its environment.
There is a possibility that the range may vary when the target does not satisfy the
conditions above at survey work.
• There is a possibility that correct distance measurement may not be performed by
dispersion or reduction of laser beam when the laser beam comes into the target from a
diagonal angle.
• There is a possibility that the instrument may not be able to correctly calculate out the
distance when receiving reflected laser beam from forth and back directions in case of
measuring the target on the road.
• There is a possibility that synthesized values are calculated and the distance may become
longer or shorter than the actual one when the operator measures the target of slope or
sphere or rugged shape.
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