Installation Manual

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52 Commercial in Confidence © Hexagon AB
8.7 Shovels and Excavators
Some vehicles can turn or rotate and hence change their heading without any forward or
backward movement, such as shovels and excavators. In such cases, it is recommended that a
second QC1000 unit (called beacon) is added so that the direction of movement of the vehicle is
always defined.
8.7.1 Rotating Vehicle with Single Antenna
Vehicles with unknown heading (e.g. non-moving, tracked, rotating vehicles) are calculated as
circular objects. No threat headings will be displayed to the operator of such vehicles
A typical example of unknown heading vehicle where a second antenna can’t be installed is a
small dozer. For such vehicles the reverse gear must be connected to Hexagon device. This will
significantly improve the heading accuracy.