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THE BASICS OF METAL DETECTING
5. EMI (Electromagnetic Interference)
The searchcoil produces a magnetic field and then detects changes in that
magnetic field caused by the presence of metal objects. This magnetic
field that the detector creates is also susceptible to the electromagnetic
energy produced by other electronic devices. Cell phones, cell phone
towers, power lines, microwave ovens, lighting fixtures, TVs, computers,
motors, etc... all produce EMI which can interfere with the detector and
cause it to beep when no metal is present, and sometimes to beep
erratically.
The SENSITIVITY control lets you reduce the strength of this magnetic
field, and therefore lessen its susceptibility to EMI. You may want to
impossible, so if you experience erratic behavior or "false" signals, reduce
operate at maximum strength, but the presence of EMI may make this
the sensitivity.
HOW TO WORK THE CONTROLS
POWER
ON/OFF
Press MENU to
make it active.
The current
selection is
indicated
•
with a "
"
Press-and-Hold
PINPOINT for
precision target
pinpointing
at any time
-
+
Press
or
to
CHANGE THE
SETTING of
the active
menu item
9
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