Having found the presence of a signal the next stop 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 off the scale then stop,
reduce the sensitivity of the locator slightly before continuing.
2. The width of the signal response will begin to shrink as the
sensitivity is reduced. Once the sensitivity is reduced enough then a
clear peak response will be seen on the bar display as the locator
traverses the service. The locator is positioned directly above the
buried service when the bar display is at its highest (peak) reading.
3. Carefully rotate the locator over the peak reading until the visual
response falls to a minimum level. The locator will now be roughly
IN LINE with the direction of the buried service.
4. Mark the position of the buried service.
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.
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