TREASUREHUNTER3D
Makes underground treasures visible
Instruction manual 19
What is best adjustment of Gain & Threshold?
In order to achieve best performance in ALL METAL mode, user must learn how to properly set Gain & Threshold�
FOR BEST PERFORMANCE & MAXIMUM SENSITIVITY:
1.
Set Gain at low level�
2.
Set Threshold to positive value >0, so that you will
hear some background hum�
3.
Then increase Gain to a comfortable level�
FOR MORE COMFORTABLE SILENT SEARCHING:
1.
Set Threshold to zero or negative value.
2.
Reduce gain if necessary�
Manual adjust
User is also able to manually set or adjust Ground Balance
values by + an - button on the control box�
For fine adjustment user should continue to raise and lower
the coil repeatedly over clear patch of soil, if the sound is
louder as you rise search coil, user should increase ground
balance, if sound is louder while lowering search coil, ground
balance should be decreased�
Notice that in the ALL-METAL mode value in the middle
presents GND PHASE or type of ground mineralization and
not Target ID as in DISCRIMINATION mode�
Fe3O4 indicates amount of ground mineralization. If amount
of mineralization is too high detector will not be able be
usable anymore in this scenario try to keep the coil higher
above the ground�
SOME TYPICAL GROUND MINERALIYATION
TYPES ARE:
Wet salt and alkali
0 - 10
Metallic iron. Very few soils in this
range. You are probably over metal.
5 - 25
Very few soils in this range -
occasionally some saltwater beaches 26 - 39
Red, yellow and brown iron bearing
clay minerals
40 - 75
Magnetite and other black iron
minerals
75 - 95
