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I4
FIELD PROCEDURES
The
1_/DIB
SERIES
2
detectors
are
equipped with
an
Expanded Range
Discrimination Control.
The variable
Discrimination Control
can
be
set to
a
true
Ground-Reject position
for
easy, all metals,
operation
over even
the most minera-
Iized
soil.
However,
the detector functions
as
a
Non-Ground Cancelling
Discriminator
when the variable
Discrimination control
is set to
reject
"junk"
metals.
If
you wish to hunt
in
an area
with heavily mineralized soil,
you
will
want to
use
your
detector with its
Expanded
Discriminator Control set to reject the ground. This will
allow
you to
detect all metals with
no
loss of depth due to ground conditions. Follow
these directions and refer to
Illustrations
TURN THE DETECTOR ON
RAISE
the detector's loop about three feet above the ground
as
in
Illustration
L.
HOLD in
on
the Push-Button and adjust the Tuner
for
a
threshold tone.
STILL holding in the Push-Button, set the
Discrimination Control to the "ground
re-
ject"
area
of the control
and release
the Button.
LOWER
the loop to the ground and listen
for
a
tone change
as
in
Illustration
M.
IF
THE THRESHOLD TONE INCREASES, raise the loop back up and
turn the
Discrimination Control slightly clockwise.
Push and release
the Push-Button to
regain
threshold
and lower loop
to the ground. Listen for
a
change
in
the tone.
IF
THE THRESHOLD TONE HAD DECREASED
at the time the loop
was
first
lowered,
then raise the loop
up and
turn the Discrlmlnatlon Control
slightly
counter-
clockwise.
Push and release
the Push-Button
to
regain threshold and lower loop to
the ground. Listen for
a
tone change.
BE
SURE
you
are
not
over
any metal,
or
the tone will always increase.
REPEAT
the procedure until there
Is
no
change
in
the threshold tone from
"air"
to
"ground".
Thus set, the detector will cancel out the
soil's mineralization which
in
turn allows deeper detection of all metal objects buried
in
the
area.
ILLUSTRATION
L
LLUSTRATION
M
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