10
Ground Balance
Compensating for ground
mineralisation.
Most ground contains many different
chemicals, minerals and salts. These
extra materials are referred to as ground
mineralisation, 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 utilises Minelab’s Automatic
Ground Tracking (AGT) to measure the ground
mineralisation while searching, and any
changes in mineralisation 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:
1. Find a clear area of ground without any
targets and hold the coil parallel to the
ground at a height of 100 mm (4").
2. Press and hold the green Ground Balance
button to activate the Fast Ground Balance.
3. Smoothly lower and raise the coil from
100 mm (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
mineralisation, 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.
Adjusting Settings
Continued…
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