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Laser Rangefinders I
I.6.4 Configuration for Use with the Asset Surveyor Software
This section provides instructions for configuring the LaserAce 300
laser rangefinder itself. For more information on configuring the Asset
Surveyor software to work with the LaserAce 300 laser rangefinder,
see Using the LaserAce 300 with the Asset Surveyor Software,
page 380.
Calibration of the LaserAce 300
Whenever you use the LaserAce 300 after storing it for a period, or in
a new environment, calibrate the LaserAce 300’s compass. This is
particularly important if you feel that the site in which you are
working is hostile in the sense of there being local magnetic field
distortions (for example, a vehicle, pipeline, or overhead or
underground power cable). The purpose of calibration is to distribute
compass error smoothly through a 360° circle.
Note – The calibration procedure does not modify the compass’s idea
of where magnetic north is. It simply distributes local distortion of the
earth’s magnetic field evenly through a 360° circle. This is important
as it ensures that compass readings are locally consistent. If you want
to account for an error in the compass’s determination of magnetic
north, do this by entering a new value for the Magnetic declination
field in the Asset Surveyor software’s Units and display configuration
form.
Calibration of the compass is quick and simple. Follow the
instructions below:
1. Press the FIRE button to turn on the LaserAce.
2. Press the button until the display shows Mode 3.
3. Press the FIRE button.
When the compass is ready for calibration, the display prompts
you to point the LaserAce 300 in a sequence of directions
starting at 0° (due North).
TSC1 Asset Surveyor Operation Manual 379