3 vLoc-5000 Receiver
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3.5.2 Broad
Peak
Mode
This uses a single horizontal antenna and provides a “Peak” or maximum
signal response over the center of the radiated signal from the buried line.
The compass line direction indicator shows the direction of the cable
(available in Active modes). The color of the compass changed from clear
to blue when the receiver is in line with the buried line.
This is less accurate than the twin horizontal antenna “Peak” mode – but
is useful if the buried line is particularly deep. For pinpointing the line, the
“Peak” mode should be used.
3.5.3 Null
Mode
This uses vertical antennas and provides a minimum or “Null” response
over the center of the radiated signal from the buried line. The compass
line direction indicator shows the direction of the cable (available in Active
modes). The color of the compass changed from clear to blue when the
receiver is in line with the buried line.
Some users prefer the null response; it works well in uncongested areas,
but is more prone to inaccuracies due to distortion of the radiated signal
in congested areas.
Left/right indication arrows are also displayed when in “Null” mode. The
arrows indicate the direction to move the receiver to locate the position of
the buried line.
3.5.4 Sonde
Mode
Sonde mode uses the antennas in a “Peak” configuration. An ICON on
the display indicates if the receiver is in Sonde mode.
A Sonde is a small transmitting coil that is powered by its own internal
battery, or by an external transmitter.
Due to its construction, a Sonde gives a different “Peak” pattern - when
locating along the direction of the Sonde - instead of the usual single
“Peak”, the Sonde provides three distinct peaks - a small “Peak” - a large
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