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Check & Adjust TPS1200 109
5.6 Adjustment of the Reflectorless EDM
General The red laser beam used for measuring without reflector is arranged coaxially with
the line of sight of the telescope, and emerges from the objective port. If the instru-
ment is well adjusted, the red measuring beam coincides with the visual line of sight.
External influences such as shock, stress or large temperature fluctuations can
displace the red measuring beam relative to the line of sight.
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The direction of the beam should be inspected before precise measurements of
distances are attempted, because an excessive deviation of the laser beam from the
line of sight can result in imprecise distance measurements.
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Warning Direct intrabeam viewing is always hazardous.
Precautions:
Do not stare into the beam or direct it towards other people unnecessarily. These
measures are also valid for the reflected beam.