4-25
4.2.2.3 Handling the receiver and locating the line
Basics for handling the
receiver
In order to be able to determine the position and orientation of a metallic conductor,
the following rules should be internalised and applied when locating lines.
As shown in the following illustration, the receiver should always be held
in front of
the body
in an upright position and as close to the ground as possible. When the
transmitter is brought directly over a metallic conductor, the maximum signal
strength will be measured. If the receiver is moved away from the conductor towards
the side and is not rotated while doing so, the signal will drop off proportionately.
The alignment of the receiver in relation to the orientation of the conductor (the
antenna being the starting point of alignment) has the following effects on the
reception signal strength:
•
Receiver
in line
with the conductor
maximum signal strength
•
Receiver
perpendicular
to the conductor
minimum signal strength
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