VIII. Search process
To make the search result-oriented and for this reason successful, the following facts
should be kept in mind:
modification of the tone (frequency)
intensity of the tone
continuity of the tone
level of value (display)
The modification of the sound is the first sign for the location of a metal object. The
more intensive the tone, the larger the metal object and the nearer it is located to
earth‟s surface. While the tone is hearable, the searchcoil should be moved in the
near vicinity to find out the possible shape of the metal object.
The concurrent adherence to sound and display value leads to a better analysis of
the discovered object.
IX. Electronic unit (front side)
The electronic unit is installed in a high-quality box. Besides the display there are 4
control elements attached to the front side.
1. MODE:
The MODE-knob can be switched to 4 positions:
DISC:
In this search mode the discriminator comes into operation. Thereby an optical and
acoustical discrimination takes place. The different metals will be signaled through
varying tones and conductivity values.
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