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ABOUT EQUALIZER USE
The "EQUALIZER" function can be thought of as another form of a discriminator.
You can use the equalizer to accept or reject from some groups of objects.
Due
to
Objects
may
some quieter ( for example, large objects made of copper ) . With EQ you
can adjust the volume of different objects as you see fit.
Also , if you work in the " ALL METAL " , you can make the volume , for example,
of ferrous objects quieter than those of other signals. In this case you will continuously
monitor the situation under the search coil without straining ears.
EXAMPLES OF SOME VDI
A table of VDI values for some objects measured in the air.
Small ferromagnetic objects
Grenade Ф1
Foil
Small coin (чешуйка) silver
The Golden Ring
Coin (10 copeck 2004 г.)
Coin (5 copeck 1961 г.)
Coin (10 rbl. of 1899) gold
Coin (1 copeck of 1869) copper
Coin (Fifty-kopeck piece of 1924) silver
Coin (Denga of 1749) copper
Coin (1 rouble of 1878) silver
Coin (2 copeck of 1840) copper
Coin (5 copeck of 1786) copper
The specified values of VDI's of the objects are rough and can differ from real
depending on type of a ground, depth type of object and size/frequency of the coil etc.
47
the
nature
of
be
louder
(e.g.,
OBJECT
the
signal
processing
foil,
aluminum
in
some
metal
caps,
etc.
Number VDI
-90... 0
-30...-35
0... +20
+15... +35
+25
+30
+35
+38
+61
+77
+78
+80
+81
+85
detectors
)
and
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