Quick Start Guide
19
Ground Balance
(continued)
HOT ROCK
Very brief
pause
Ground Balance Window and Hot Rocks
Axiom’s unique Ground Balance Window feature
helps overcome hot rocks and other localized ground
variations. Hot rocks are typically highly ferrous, iron-
based rocks that are either more or less conductive
than the surrounding soil, thereby creating a response
that can resemble a target.
Because of Axiom’s inherent immunity to most
normal soil minerals, hot rocks can typically be
eliminated by simply ground balancing to the hot rock
instead of the ground. But in extremely mineralized
soil, the Axiom must be ground balanced to the soil, in
which case the hot rock may produce a response.
To simultaneously eliminate the mineralized soil
and a hot rock, utilize a longer Ground Balance process
that activates the Ground Balance Window feature, as
follows.
During the rst ten seconds of ground balancing,
the Ground Balance Window is always reset to zero, and
is disabled. During this time, the detector will attempt
to ground balance to a single ground condition, as is
the case for normal ground conditions.
However, after ten seconds of ground balancing,
the operator will hear another double-beep, indicating
that Axiom has now activated the Ground Balance
Window feature to eliminate both the mineralized soil
and the hot rock. Continue holding down the GND BAL
button while combining a vertical pump over the soil
with a horizontal scan across the hot rock in a repeating
pattern as shown. Be sure to very briey pause between
the verticle pump and the horizontal scan to ensure the
ground and the hot rock create distinctive signals.
Continue this pattern until the ground and hot
rock responses are eliminated or become as small as
possible. Then release the GND BAL button.
When ground conditions are such that you no
longer need the Window feature, simply reground
balance to the ground and exit within ten seconds. This
will clear the Ground Balance Window, setting it back to
zero.