16
Using the Locator:
Pinpointing
NOTE
The amount of sensitivity adjustment needed to pinpoint a service can vary depending on the mode being used,
the signal strength and the service depth.
NOTE
The word ‘OVER’ will appear on the display if the Locator is detecting a signal that is too strong. This is irrespective
of which mode of detection is being used and can also be caused if the Power Output setting on the Signal Generator/
Transmitter is too high.
NOTE
The presence of other signals in the immediate vicinity may result in the visual response not reducing to a minimum
level when the Locator is rotated over the peak response.
NOTE
Each time the Locator response reaches its peak
position, a single ‘PeakHold’ line will remain showing
on the bar graph for two seconds to assist you to return to the correct peak position.
Having found a signal the next step is to pinpoint the source.
The closer the Locator is to the signal source the stronger the response.
To Pinpoint a Signal
1. Keeping the Locator vertical, walk through the area of the signal
response. If the visual response goes up off the scale then stop
and reduce the sensitivity of the Locator slightly before continuing.
2. The width of the signal response will shrink as the sensitivity
is reduced. Once it is reduced enough then a clear peak response
will be seen on the display as the Locator traverses the service.
The Locator is positioned directly above the buried service
when the display is at its highest
(
peak
)
reading.
3. Carefully rotate the Locator over the peak reading until the visual response falls to a minimum.
The Locator will now be roughly IN LINE with the direction of the buried service.
4. Mark the position of the buried service.
