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Battery Test
Click the right knob fully counterclockwise (all the way to the left), in order to test
the batteries.
If the batteries are good, the needle will move to the right and enter the green
zone on the indicator label.
If the needle does not enter the green zone, replace the batteries.
Practicing Outside
1. Turn the detector on
a. Rotate left knob clockwise to a high sensitivity setting.
b. Click right knob on to exit the "battery test" mode.
c. Maintain right knob in counterclockwise position, but do
not click into the "battery test" mode.
2. Find a clear area in the grass
Sweep the search coil around the grass to find an area where
the detector does not beep. In order to test your detector, you
must first find an area free of metal objects.
3. Toss these metal objects on the ground
a. A nail or other iron object like a small screwdriver
b. A zinc penny (dated after 1982)
c. A quarter
4. Keep the objects spaced apart on the ground
5. Sweep the search coil over each of the objects
a. You must keep the search coil moving.
b. Notice that the sound is loudest when the metal object is
under the center of the search coil.
c. While sweeping back and forth, slowly raise the search coil
several inches off the ground.
Notice that the sound is louder when the search coil is closer
to the objects.
6. Turn the right knob progressively to the right while passing the
search coil over each of the objects
The nail (or small iron object) is eliminated from detection
with the right knob in approximately the 3:00 position.
The zinc penny (pre-1982) is eliminated from detection with
the right knob in approximately the 6:00 position.
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Sensitivity and Target Elimination
Adjusting Sensitivity
The left knob clicks on to power the detector on.
After turning on, the left knob is used to control the detector's sensitivity level. In
the 100% clockwise position, the detector is at maximum sensitivity. At this
level, the detector will detect a coin-sized object, like a quarter, up to 5" away
from the coil. Very large metal objects will be detected up to one and one-half
feet from the search coil at maximum sensitivity.
Reduce the sensitivity if the detector chatters or emits false signals; your
detector is probably reacting to electromagnetic interference.
Target Elimination
The right knob is used to eliminate unwanted metals from detection.
For instance, you may be searching for coins, and want to eliminate objects like
nails, bolts, or pull-tabs from detection.
As you turn the right knob clockwise, you progressively eliminate different types
of metals from detection. As you rotate the right knob, you first eliminate iron
objects from detection. Iron objects include nails, bolts, old cans, and tools.
Next, you eliminate nickels, pull-tabs, and finally zinc pennies.
Gold is also eliminated from detection with the right knob. First smaller gold
objects are eliminated; as you rotate the knob further, larger gold objects are
eliminated. Silver objects, like high-value coins, are not eliminated from
detection.
Refer to this scale for the relative positions at which different types of metals are
eliminated from detection:
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