Trash; Identifying Buried Objects; Size And Depth Of Buried Objects; Electromagnetic Interference (Emi) - Fisher GOLD BUG Owner's Manual

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THE BASICS OF METAL DETECTING

If searching for coins, you want to ignore items like aluminum foil, nails and

2. Trash

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.

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.

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.

electromagnetic 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 eMI 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 eLeCTrOMAGNeTIC INTerFereNCe (eMI)

for a more thorough explanation of eMI and how to manage it.

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