23
18
Tabledescribesferrousandnonferrousvolumeateachsetting
Volume
Volume
Setting
Nonferrous
Ferrous
Setting
Nonferrous
Ferrous
1
1
1
11
10
1
2
2
2
12
10
2
3
3
3
13
10
3
4
4
4
14
10
4
5
5
5
15
10
5
6
6
6
16
10
6
7
7
7
17
10
7
8
8
8
18
10
8
9
9
9
19
10
9
10
10
0
20
10
10
GROUND BALANCING
What is Ground Balancing?
Why do I need to Ground Balance?
All soils contain minerals. Signals from ground minerals are often tens or
hundreds of times stronger than a buried metal object. The magnetism
of iron minerals, found in nearly all soils, causes one type of interfering
signal. Dissolved mineral salts, found in some soils are electrically
conductive, causing another type of interfering signal. The
mathematical term for describing these differences is
Phase.Phase
varies with the types of minerals present in the soil.
Ground Balancing is the process by which the metal
detector cancels the unwanted signals coming from
the ground minerals while still detecting the signals from
buried metal objects. This is accomplished by matching
the detector’s ground balance setting to the phase of
the ground signal.
When the detector is calibrated to the soil, the
result will be deeper target detection, quieter
operation, and more accurate target identification.
How to Ground Balance your detector:
Ground Balancing procedure with the Ground Grab
®
COMPUTERIZED GROUND
BALANCING (GG) touchpad.
1. Turn the detector on and set GAIN at the 12:00 position.
2. Click on the right knob to the ALL METAL Mode.
3. Rotate the THRESHOLD control knob to the point where you hear a slight
background hum.
4. Sweep searchcoil across the ground to find a clear patch of ground with no
metal present.
5. Press and hold the Ground Grab
®
COMPUTERIZED GROUND BALANCING
(GG) touch pad, and pump searchcoil over the clean ground.
Seeillustration
above.
Pump searchcoil from within 1” of ground to 6”- 8” above ground.
6. When the GND PHASE
settlesdown
to only 1 or 2 numbers in variation,
release the GND GRAB button while still pumping the searchcoil. Note that
the audio response to the ground changed and “Evened Out” when you
released the button. Also note that the GND BAL value changed. After
balancing, you can hunt in ALL METAL... or return to Disc Mode.
The most accurate GND PHASE value is the value displayed when “pumping” the
searchcoil over the ground in an area free of metal.
Ground Balancing continued on next page
Pumpingcoil
toground
balancewith
COMPUTER-
IZED
GROUND
BALANCING
button.
OPERATING IN DISCRIMINATION M ODE
Volume
Use
or
to adjust the volume setting when the VOLUME menu option
is highlighted. The default volume setting is 7.
Press
to increase speaker volume. Maximum volume is at setting 20.
Press
to lower speaker volume. The minimum volume setting is 0, no sound.
With volume set to 0, the Target-ID and Depth Bar Graph will function as
normal, but the detector will not emit a sound when targets are detected.
The overload volume signal will always sound off in the event of signal
overload, even with the volume set to 0.
Because the
G
2+
is so sensitive to even the smallest iron targets, the
detector incorporates
FeTone™
, Adjustable Iron Audio, a feature to reduce
the volume of iron targets to minimize user fatigue.
Volume settings 10 - 20 are available to control the volume level of iron
targets.
As you increase volume from 10 to 20, iron-volume changes from silent
to maximum. Note that, depending on the V-BREAK
®
setting, iron targets
may induce V.C.O. tones; in this case, the V.C.O. tones in the iron range
(ID 1 - 39) will also have the same reduced volume.
At each of the 10 - 20 volume settings, nonferrous target response is
maximum volume.
Volume control applies only to motion target detection.
Volume changes do not affect Pinpoint volume.
Setting Memory:
When detector is powered OFF settings are saved, except for the ground setting and backlight
level.
When detector powers ON, ground is preset to 82.9 and backlight is always OFF.
How to preset to factory default settings (if desired).
• Power detector OFF.
• Set right knob to DISC.
• Press-and-hold
.
• Turn ON while holding
.
• The menu options will flash.
• Release
; detector turns on and all settings are restored to the factory defaults.
Operating in Discrimination Mode continued on next page
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