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Laser Rangefinders I
I.7.4 Configuration for Use with the Asset Surveyor Software
This section provides instructions for configuring the Contour XLR
laser rangefinder itself. For more information on configuring the Asset
Surveyor software to work with the Contour XLR laser rangefinder,
see Using the Contour XLR with the Asset Surveyor Software,
page 394.
Calibration of the Contour XLR
Whenever you use the Contour XLR after storing it for a period, or in
a new environment, calibrate the Contour XLR’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. Turn on the Contour XLR.
2. Press the Menu key.
3. Press the Down arrow key until the entry Comp appears in
brackets, and then press Enter.
4. Press the Down key until CAL is selected, and then press Enter.
The display shows the message Initializing – please wait.
TSC1 Asset Surveyor Operation Manual 393