10
15
BASIC OPERATION
(continued)
SENSITIVITY ADJUSTMENT
ELECTROMAGNETIC
INTERFERENCE
The principle use for the Sensitivity
Control is to eliminate Electromagnetic
Interference (
EMI
).
A hobby metal detector is an extremely
sensitive device; the search coil
creates its own magnetic field and
acts like an antenna. If your detector
beeps erratically when the search coil
is motionless, the unit is probably
detecting another electromagnetic
field.
Common sources of
EMI
are electric power lines, both suspended and buried,
motors, and household appliances like computers and microwave ovens. Some
indoor electronic devices, such as dimmer switches used on household lighting,
produce severe
EMI
and can cause the detector to beep erratically. Other metal
detectors also produce their own electromagnetic fields; so if detecting with a
friend, keep two metal detectors at least 20 feet apart.
If the detector beeps erratically,
REDUCE THE SENSITIVITY
by pressing the
Sensitivity
▼
Pad
on the left of the control panel.
SEVERE GROUND CONDITIONS
A secondary use for the Sensitivity Control is to reduce false detection signals
caused by severe ground conditions. While your
Titan 3000 XD
contains
circuitry to eliminate the signals caused by most naturally occurring ground
minerals, 100% of all ground conditions cannot be anticipated. Highly magnetic
soils found in mountainous and gold-prospecting locations can cause the
detector to emit tones when metal objects are not present. High saline content
soils and sands can sometimes cause the detector to false.
If the detector emits false, non-repeatable, signals,
REDUCE THE SENSITIVITY.
MULTIPLE TARGETS
If you suspect the presence of deeper targets beneath a shallower target, reduce
the sensitivity to eliminate the detection of the deeper targets, in order to properly
locate and identify the shallower target.
NOTCH MODE
To selectively eliminate a category from detection within the metallic
spectrum, use the
NOTCH Mode
.
Technical Note:
The
NOTCH touch pad
causes the status of an
"R"
segment to
toggle between
ON
and
OFF
.
To use the
NOTCH Mode
:
The
NOTCH touch pad
can be depressed at any time. But for
first-time use, place the detector in
ALL-METAL mode
.
A first demonstration is best accomplished as follows:
1
)
Turn
the power
OFF
.
2
)
Turn
the power
ON
.
3
)
Press NOTCH
.
A flashing
"R"
will appear under the
IRON-1
segment.
4
) Press the
DISCRIMINATION
▲
touch pad
several times.
Notice that the
"R"
moves upon each press of the
DISCRIMINATION
▲
touch pad.
5
) Press NOTCH again.
The flashing "R" will become permanently illuminated.
If an object has been
“notched-out”
, you can return it to detection
status. To
“un-notch”
a category:
1
)
Press NOTCH
.
2
) Move the flashing
“R”
over the permanently illuminated
“R”
, using the
DISCRIMINATION
▲
or
▼
touch pads
.
3
)
Press NOTCH again
.
ITD
The
ITD
(Instant Target Discrimination) control is a convenient way to
eliminate a known undesirable metal object from detection.
To demonstrate the
ITD control
:
1
) Set the detector in
All-Metal Mode
Note:
ITD
functions in all motion modes, but is best demonstrated
first from the All-Metal Mode.
2
)
Pass
the search coil over an undesirable object.
3
) Notice the Target Indication
Note:
You can only
ITD
objects that register under the
seven left-most segments (from Iron to Zinc).
Summary of Contents for 3000XD
Page 1: ...Owner s Manual 3 08 ays ful...
Page 4: ...ASSEMBLY continued I...
