Ground Grab Computerized Ground Balancing; Setting The Controls; Unwanted Noise; Sweeping The Searchcoil - Fisher GOLD BUG Owner's Manual

OPERATING IN ALL METAL MODE
The All Metal Mode is more sensitive than the Discrimination Mode, and is used to
find all types of metal objects in the ground. The searchcoil must be in motion for
objects to be detected.
Naturally occurring minerals in soil look like metal to a metal detector, so you want to
Ground Grab ® Computerized Ground Balancing
cancel out this mineral signal coming from the ground, and only detect the signal from
metal objects in the ground.
So before using your detector, set it in All Metal Mode and perform the automatic
ground balancing procedure. Press-and-hold the Ground Grab Computerized
®
Ground Balancing button while pumping the searchcoil up and down over the
ground. release the button when the sound evens out. The GND BAL number on the
bottom right of the screen is the detector's internal setting which cancels out the
minerals in the ground. Different soils in different areas will require different GND BAL
settings, so balance to ground before you search.
Refer to the Ground Balancing section of this manual for a more in-depth explanation.
As you adjust any of the controls, notice that the values on the bottom-right of the

Setting the Controls

display indicate the settings of the value you are changing.
If you are new to metal detecting, start with the GAIN and THreSHOLD controls at a
low enough setting that you do not hear too many unwanted sounds, like warble or a
loud hum. Set the GAIN at the 12:00 position, or less. Then set the THreSHOLD to a
position where you hear a very slight background hum, or if you prefer, dial the control
just left of that position to a setting where the detector is silent.
read the section on electromagnetic Interference (eMI).

Unwanted Noise

The Gold Bug is a highly sensitive device.
®
It is intended for use outdoors. Indoor operation will subject it to interference from a
wide variety of devices in the home or office.
As you sweep the searchcoil over the ground, try to keep the searchcoil parallel to the

Sweeping the Searchcoil

ground.
Avoid lifting the searchcoil at the end of your sweeps.
Operating in All Metal Mode continued on next page
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