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51
Multiple scans not matching up or large traverse misclosures
Cause
Remedy
Reference in manual
Initial reference object or back-
sight not targeted correctly.
Ensure the initial reference
observation is precisely aimed and
is pointing to the correct target.
Section 8.2, “Setting up the
Quarryman Pro”
Instrument not levelled.
Use the bubble carefully to ensure
the instrument is levelled before it
is switched on.
Section 8.2, “Setting up the
Quarryman Pro”
Instrument moved during
operations.
Ensure the tripod is secure and the
tribrach is tightly fastened to it.
Section 8.2, “Setting up the
Quarryman Pro”
Instrument height not measured
correctly.
Measure from the ground under the
instrument to the cross on the side
panel. Enter in metres or feet.
Section 8.2, “Setting up the
Quarryman Pro”
Target height not entered correctly. Only enter a target height if
shooting to a target above the
object being surveyed – e.g. a
target on a pole held above a
traverse station or a hole collar.
Enter in metres or feet.
Section 8.2, “Setting up the
Quarryman Pro”
Telescope not aligned with laser.
Arrange recalibration.
Contact Carlson or a local Carlson
representative
Encoders faulty.
Arrange recalibration.
Contact Carlson or a local Carlson
representative
Large ‘spread of heights’ from a resection
Cause
Remedy
Reference in manual
Telescope not aligned with laser.
Arrange recalibration.
Contact Carlson or a local Carlson
representative”
Survey targets moved.
Ensure the targets are stable. Have
the targets remounted and
resurveyed if necessary.
Wrong coordinates entered for the
survey targets.
Ensure the coordinates have been
entered correctly in the processing
software and that the correct target
has been matched with the correct
observation.
Incorrect ranges in Point and shoot mode
Cause
Remedy
Reference in manual
Shooting to a reflective prism.
Do not use a reflective prism as a
target.
Section 7.1, “System limitations”
Thick dust, mist or snow interfering
with observations.
Switch on last-hit mode. If the
problem persists, wait for dust or
bad weather to clear, if feasible.
Section 6.3, “Main menu”
Shooting into the sun.
Avoid pointing the laser directly at
the sun.
Section 7.1, “System limitations”