Ground Balance
Compensating for ground mineralization.
Most ground contains many different
chemicals, minerals and salts. These
extra materials are referred to as ground
mineralization, which may produce erratic
sounds known as 'ground noise' . Ground noise
can make it more difficult for you to hear
target signals; particularly faint target signals
from small or deep targets.
The SDC 2300 utilizes Minelab's Automatic
Ground Tracking (AGT) to measure the ground
mineralization while searching, and any
changes in mineralization are automatically
compensated for.
The SDC 2300 features a momentary Fast
Ground Balance , which should be used
to initially set the ground balance prior to
searching.
To perform a Fast Ground Balance, follow the
steps below:
1. Find a clear area of ground without any
targets and hold the coil parallel to the
ground at a height of 100mm (4").
100mm (4")
2. Press and hold the green Ground Balance
button to activate the Fast Ground
Balance.
3. Smoothly lower and raise the coil from
100mm (4") towards the ground, without
touching the ground.
4. Continue to lower and raise the coil until
the audio has stabilised and any ground
noise has stopped. The Threshold tone
should now be even.
5. Release the green Ground Balance button.
Tips:
If ground noise continues to be a problem
after carrying out Ground Balance, you may
need to reduce your Sensitivity.
If detecting in areas of extremely variable
mineralization, detecting with the contours
rather than across the changes will often
reduce ground noise.
Do not continuously sweep over or Ground
Balance over a faint target response because
you may 'balance out' a target instead of
detecting it. Ground Balance near the target,
then sweep over the target to pinpoint its
location.
9
100mm (4")