Garrett Scorpion gold stinger Owner's Manual page 12

is true non-discriminating operation. You
will also want to test various rocks and
ore samples while in the TR Disc mode.
When the Discrimination control is set
at Zero, it is at the absolute tuning point
between metal and mineral. Any sound
from a target will indicate the presence of
some conductive metal.
3. Rotate the control to the 3 or 4 positions,
press Tune, and the sound will decrease
or cease, when small nails are scanned
across the bottom of the searchcoil.
4. Test steel bottlecaps at this setting.
You may have to rotate the control farther
clockwise and press Tune before their
sound will diminish. You will note that
nails, foil, and other small junk items will
also be rejected (cause no sound) at this
setting.
5. Rotate the control to the 7 position and
pulltabs will be rejected. At this setting
you will note that nickels and some rings

will also be rejected. The conductivity of
this type of target is not great enough to
cause the detector to respond when the
Discrimination control is set at a high
number.
Now, flip the Master Control toggle switch
to Motion Disc, and perform exactly the
same tests on coins, nails, pop-tops, etc.
Since you are operating with automatic
tuning, you will not have to retune the
instrument by pressing the Tune button,
when you adjust the Discrimination
control.
Again, never rotate the Discrimination
knob any farther clockwise than necessary
to eliminate the targets you do not wish
to detect.