Trash; Identifying Buried Objects; Size And Depth Of Buried Objects; Emi - Teknetics G2 Owner's Manual

THE BASICS OF METAL DETECTING

2. Trash

If searching for coins, you want to ignore items like aluminum foil, nails and
pull-tabs. These undesirable items are generally identified toward the lower
end of the 0-100 scale. You can listen to the sounds of all objects detected,
and decide on what you want to dig up. Or you can eliminate unwanted
metals from detection by using the DISCRIMINATION feature.

3. Identifying Buried Objects

Different types of metals are classified along the arc at the top of the screen
on a 0-100 scale from left to right. A 2-digit numerical reading is also
provided in the middle of the display for more precise target identification in
Discrimination mode.

4. Size and Depth of Buried Objects

When using the detector in the motion DISC mode, the relative depth of an
object is displayed to the left of the display over the SIGNAL strength
indicator. A more accurate depth reading is available using PINPOINT.
Pinpoint displays target depth, in inches. The Pinpoint mode does not
require the searchcoil to be in motion to detect metals. The ability to hold
the searchcoil motionless over the target also aids in tracing an outline of
the buried object, or in pinpointing the exact location of the object using
techniques described in the pinpointing section of this manual.
5. Electromagnetic Interference (EMI)
Electrical interference, (EMI), can cause a metal detector to chatter
spontaneously, to lose sensitivity for no apparent reason, or to cause a
periodic wobbly audio sound. Common sources of electrical interference
include power lines, electronic communication equipment such as
cellphones, fluorescent lamps, military electronics such as radar, other
metal detectors and computer equipment.
Your first line of defense against EMI is to reduce the Gain and/or
Threshold. In areas with heavy EMI, operating at reduced sensitivity levels
will result in the loss of some depth, but at least the metal detector will be
usable.
See the 2-page section on ELECTRICAL INTERFERENCE for a more
thorough explanation of EMI and how to manage it.
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