6
The detector requires a single 9-volt ALKALINE battery (battery not
included). Do not use ordinary zinc carbon batteries.
Rechargeable batteries can also be used.
If you wish to use rechargeable batteries, we recommend using a
Nickel Metal Hydride rechargeable battery.
The battery compartment is located on the back side of the housing.
Slide the battery door to the side and remove it to expose the battery
compartment.
BATTERY LIFE
Expect 20 to 25 hours of life from a 9-volt alkaline battery.
Rechargeable batteries provide about 8 hours of usage per charge.
SPEAKER VOLUME AND BATTERY CHARGE
You may notice the speaker volume drop while one battery segment is
illuminated.
With one segment flashing, low speaker volume will be very apparent.
For loudest speaker volume, select 1 or 2 tones under the # OF TONES menu
selection.
BATTERY INDICATOR
The 2-segment battery indicator has 3 stages of indication.
These indications are accurate for a 9-volt alkaline battery.
Segments Illuminated
Battery Voltage
2 -segments
more than 7.6 volts
1 -segment
more than 6.2 volts
1 -segment flashing
less than 6.2 volts
After the battery indicator begins flashing, expect the detector to shut off within
10 minutes.
A rechargeable battery will usually illuminate both segments throughout most
of its useful charge. But as soon as it drains to the 1-segment level, it will then
discharge very rapidly.
BATTERIES
19
When operating in ALL-METALS mode the goal is to eliminate the
sound as the coil is being pumped over the ground. In some soils,
the sound is not completely eliminated. If the ground balance
adjustment is incorrect, there will be a difference in the sound as the
searchcoil is either moving toward or away from the ground. It sounds
like you are either pulling the sound out of the ground, or pushing
the sound into the ground.
• If the sound is louder as you raise the searchcoil, increase the
ground balance setting.
• If the sound is louder as you lower the searchcoil, reduce the
ground balance setting.
NOTE: Experienced users often prefer to adjust the ground
balance to get a weak but audible response when lowering the
searchcoil. This is called adjusting for positive response.
Positive and Negative Response
The purpose of ground balancing is to adjust the metal detector to
ignore ground minerals. If the setting is incorrect, ground minerals will
give either a positive or a negative response, depending on which
direction the adjustment is off.
POSITIVE RESPONSE
If the G.B. setting is too high a number, the response of minerals will
be positive. This means that when the searchcoil is lowered to the
ground in PinPoint, Stat, or Motion All Metals mode, the sound will
get louder as the searchcoil approaches the ground. The sound will
grow quieter as the searchcoil is raised. What, if anything, you will
hear in discrimination mode depends on the discrimination setting.
When searching in an All Metals mode, if ground balance is properly
set to cancel the ground, and you sweep over a positive hot rock, the
rock will give a “zip” sound similar to that of a metal object.
NEGATIVE RESPONSE
If the G.B. setting is too low a number, the response of minerals will
be negative. When the searchcoil is lowered to the ground in
PinPoint, or Motion All Metals mode, the machine will be silent. The
machine will sound off as the searchcoil is lifted away from the
ground. What, if anything, you hear in discrimination mode depends
on the discrimination setting. When searching in Motion All Metals
mode, a negative hot rock will produce a “boing” sound after passing
over it, making it difficult to know where it is located. It will not have
the sound and “feel” of a metal object.
OPERATION and CONTROLS
cont.
GROUND BALANCING
continued
