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3 vLoc3-Pro Receiver
Screen Icons explained
Classic Screen/Antenna congurations:
Icon Description Function/response
Peak
Dual horizontal antennas giving largest signal over the line with sharp accurate results.
Less aected by distorted signals.
Null
Vertical antenna giving minimum signal over the line with sharp response but more
affected by distorted signals. Can be used to identify distorted signals by comparing
results with the peak mode.
Broad peak
Uses single antenna. Not so accurate as dual peak antennas and more dicult to pinpoint
the line but gives a signal boost from deep lines.
Delta-Null
Uses dual null antennas to minimise the oset eects of eld distortion. This mode tends
to be more precise than the Null mode.
Peak with Arrows
Same bar graph response as Peak but Left/Right Arrows indicate the Null locate position.
Good, general purpose mode, giving quick intuitive results.
Omni direction
When you see the two double ended arrows around an icon, this means that the line is
detectable regardless of locator blade orientation. It is very useful for quickly checking an
area for buried lines.
3.8 Classic Locating Modes (Response)
The vLoc3-Pro receiver has an array of six antennas, and these can be toggled through dierent congurations (modes) to
provide dierent responses to the signals radiating from buried utilities. The modes are:
3.8.1 Peak Response Mode
Two horizontal antennas provide a “Peak” or maximum signal response over the center of
the buried line. The compass (line direction indicator) aligns itself parallel to the direction of
the cable (available in Active modes).
This is an accurate method of the locating as both horizontal antennas are used to provide a
clearly identiable “Peak”. It is also less prone to the eects of signal distortion.
A Peak Level Indicator is also provided on the bar graph. This indicates the largest signal
detected allowing the user to quickly return to this point.
3.8.2 Broad Peak Mode
This uses a single horizontal antenna and provides a “Peak” or maximum signal response
over the center of the buried line. The compass (line direction indicator) aligns itself parallel
to the direction of the cable (available in Active modes).
This gives a less dened peak than the twin horizontal antenna “Peak” mode – but is useful
in some situations such as deep lines because using a single antenna has the effect of
boosting the received signal.
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