WatchDog WatchDog 3349SS, Руководство по эксплуатации продукта

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Because the Sensor Unit has an electronic compass, it
should be at least 3' (1 m) away from strong magnetic
fields from equipment such as radio transmitters. Since it
has a GPS, be sure it is as far as possible from high-
powered transmitting antennas to avoid mutual interfer-
ence. Similarly, mount the Sensor Unit far enough from
an existing GPS unit to avoid interference, and to keep the
Sensor Unit from blocking the GPS unit’s view of the sky.
The Sensor Unit must be installed vertically—NOT tilted
to one side. Tilting the unit will introduce an error in the
compass reading.
If you are using the magnetic mount, remember that you
must have a steel surface to attract the magnet. With a
fiberglass roof, this usually requires applying an adhesive
steel plate, as is used to provide a mounting point for GPS
units. The magnetic mount can also be removed, and a
standard ¼” bolt can be used to attach the mounting post
to the vehicle.
Once you have decided on a location, note which direction
you want the cable to travel. At this time, you may wish
to mark the front of the mounting post (the side which will
be pointing toward the front of the vehicle).