DISCRIMINATION MODE
The Discrimination Mode is used to eliminate trash metal objects from detection, e.g. nails,
aluminum foil, or pull-tabs. The searchcoil must be in motion for metal objects to be
detected. Discrimination incurs some loss of sensitivity to small or deep objects.
SENSITIVITY
This controls the signal gain, and is adjustable from 1 to 99. Unlike the All Metal modes,
the Discrimination mode is designed to operate silently. If you hear noise when there is no
metal present or when the searchcoil is not in motion, reduce the Sensitivity setting until
the machine goes quiet. NOTE: there is no interaction between the sensitivity settings of
the All Metal and Discrimination Modes.
DISCRIMINATION LEVEL
This is adjustable from 0 to 65, and controls the range of objects to be eliminated from
detection (discriminated out or rejected). Objects with numeric values below the selected
discrimination level will not be detected. NOTE: the numerical range that pertains to each
class of object is printed at the top of the visual display. To eliminate iron, a setting of 15
is usually about right. A setting of 65 will eliminate aluminum trash and zinc pennies, but
nickels will also be lost, unless you notch-in nickels with the NOTCH feature.
To use DISC LEVEL
1. Highlight DISC LEVEL using the MENU button.
2. Rotate the SETTINGS knob.
As you rotate the knob, a number between 0 and 65 appears.
3. Press MENU when you reach the desired target discrimination value.
• If you do not press MENU, and let the display time-out, the last displayed
value will be stored as the discrimination value.
• All targets, up to and including the value selected, will be eliminated
from detection, unless notched-in.
5. A slash will appear over the target words being eliminated. Notice that two
slashes can appear over each word. The left slash represents the bottom half of
the range; the right slash represents the top half of the range. When you select a
value within any range, the slash will appear, even though all values within that
range might not be eliminated from detection. To recall the discrimination
setting, press the MENU button until you enter the DISC LEVEL feature.
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