Ground Balance - Minelab Eureka Gold Instruction Manual

Page 6 The Minelab Eureka Gold
8.2

Ground Balance

Generally speaking, without the ground balance of the detector being set,
passing the coil over an area of ground may produce signals whether or
not there are targets in the ground. Signals produced without the presence
of targets are due to the magnetic and/or mineralised nature of the soil.
To eliminate these unwanted signals the automatic ground balance of the
Eureka Gold must be enabled by switching to either Fast Track or
Slow Track. In these modes the Eureka Gold automatically adjusts its
ground balance.
When first turning the detector On, switch it to either Fast Track or
Slow Track and raise and lower the coil repeatedly over the ground until
the audio signal is constant.
In heavily mineralised ground, Fast Track will re-balance more rapidly and
therefore maintain a better ground balance, however, very weak target
signals could be eliminated if repeated sweeps are made across the
target. In less mineralised areas, Slow Track will maintain a good ground
balance without tracking out targets. Once a target has been located, the
detector should be put into Fixed for pinpointing and digging the target.
Note: It is possible for small targets to be balanced out if the detector coil is
swept repeatedly across the target. Once a signal is located, the Balance
switch should be changed into Fixed mode.