Control Elements 27
5.2.5 Calibration Button
This function will perform the automatic ground balance of the built in magnetometer enabling the unit
to discriminate between ferrous and non-ferrous metals.
For the person who is only looking for non-ferrous metals, discrimination is very important. When the
unit is not calibrated the detection of non-ferrous metals still takes place. The only difference is that
ferrous metals will not have the “FE” sign show up in the main display screen. After calibrating the
Black Hawk the function of discrimination is automatic. Please make note that some soil conditions may
make it difficult to discriminate some metals.
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