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Understanding ground conditions assists the user in setting up the machine,
knowing when to readjust ground balance, and in understanding the responses
of the machine while searching.
This detector displays two kinds of ground data:
1.
The
type
of mineralization (which affects where the ground phase should
be set). This is
GNDPHASE
2.
The
amount
of mineralization (the greater the amount of mineralization,
the greater the loss of detection depth & ID accuracy; this loss is more
pronounced in Discrimination Mode). This is
Fe
3
O
4
.
The goal of ground balancing is to equate the GND BAL number to the
PHASE number.
PHASE is the measurement of the ground.
GND BAL is the detector’s internal setting which calibrates the detector
to the ground’s phase.
Notice that the GND BAL number is three digits, with a decimal point.
PHASE has only two digits.
GND BAL is a higher resolution number, so may differ a bit from PHASE
in a perfectly balanced scenario.
After pumping and releasing Ground Grab
®
COMPUTERIZED GROUND
BALANCING (GG), the exact measurement of the ground will be
transferred to the GND BAL setting.
The two-digit PHASE number displayed on the screen indicates the
type
of
ground mineralization.
Some typical ground mineralization types are:
0 – 10 Wet salt and alkali
5 – 25 Metallic iron. Very few soils in this range. You are probably over metal.
26–39 Very few soils in this range -- occasionally some saltwater beaches
40–75 Red, yellow and brown iron-bearing clay minerals
75–95 Magnetite and other black iron minerals
96–99 Values over 95 are generally an indication of a searchcoil or
electronics defect or out-of-calibration condition.
Ground Balancing continued on next page
GROUND BALANCING
OPERATING IN DISCRIMINATION MODE
Discrimination is used to eliminate trash metal objects (e.g. nails, foil, pull-tabs) from
detection. The searchcoil must be in motion to detect metal. The Discrimination Mode
is less sensitive to small and deep objects than the All Metal Mode.
Ground Grab
®
COMPUTERIZED GROUND BALANCING
This feature is not available in Discrimination Mode.
Your best results will be achieved by first performing the COMPUTERIZED GROUND
BALANCING procedure in All Metal Mode.
The ground balance setting achieved using COMPUTERIZED GROUND BALANCING
will carry over into this mode.
Setting the Controls
As you adjust any of the controls, notice that the values on the bottom-right of the
display indicate the settings of the value you are changing.
GAIN
If you are new to metal detecting, start with the GAIN at a low enough setting that you do not
hear any sounds when the searchcoil is sweeping across the ground, with no metal present.
Start with GAIN at the 12:00 position, or less.
In this mode, Gain refers to the detector’s sensitivity. The higher the setting, the deeper
objects can be found, and the more sensitive the detector is to very small metal objects.
MODE
The right knob is not used in the Discrimination Mode.
Click the right knob 100% counterclockwise.
If you turn the knob to the right, you will leave Discrimination Mode, entering All Metal Mode.
MENU
The Menu is located on the right side of the screen. During Discrimination
operation the Menu is inactive; during All Metal operation, Menu is not available.
Use
to select a Menu option.
Use and
to modify the setting of the selected Menu option.
and change the menu settings. When the menu is not visible, and
change the DISC setting; it is not necessary to access the menu to change
DISC during operation.
Menu options are:
Backlight
Available setting from 0 to 5. This option controls the brightness of the
display backlight. When the backlight is on,
is illuminated. In daylight,
the backlight can be turned on but will not be visible, draining the batteries.
So be sure
is not illuminated if backlight illumination is not required.
Operating in Discrimination Mode continued on next page
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