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All metal is used to find all kinds of metal targets. DISC is used to discriminate the metal type.
In general case, user firstly sets the operation mode to ALL METAL, DISC to counter clockwise
end, SENS to high position. Then hold the search coil parallel with the ground about 1~5cm
above the surface. Sweep the search coil from side to side in an arc line of 7cm motion.
When the detector detects a buried target, it sounds a tone. User can make a visual note of
exact spot on the ground where the detector beeps.
Then stop the search coil directly over this point on the ground. Move the search coil straight
forward away from you and straight back towards you a couple of times. Meantime slowly
rotate the DISC control clockwise away from ALL METAL until the unit does not sound or
sounds short tone. You can identify what kind of metal is detected according to the setting
position of DISC.
A reference for you to know what kind of metal is rejected depending on the DISC setting.
Setting of DISC
Metal Rejected.
Near 11:00
Iron
Near 12:00
Nickel coin(5¢), pull tab
Near 13:00
Zinc coin(1¢ 87 version)
Near 15:00
Copper coin (1¢ 76 version)
When the DISC control is set to the clockwise end most of metal is rejected, except
silver(25¢,50¢ and 1$).
Factors That Affect The Detecting
It’s difficult to have an accurate detecting result. It needs practice to get better detection results.
Sometimes the detecting may be restricted by some factors.
If there are interference from other instruments or electrical cable or TV or radio in your searching
area, lower the sensitivity, or to change the current searching area.
When searching in highly mineralized area, the unit will sound even if there’s no metal. In this case,
you can lower the sensitivity and increase the height between the search coil and the ground until
the false signal disappears. If necessary, reset the DISC.
When searching in trash area, it’s better to set the DISC to 11:00 position, so that the unit can notch
most of invaluable metals such as nails and small
trashy iron.
Move away any metal digging tool when searching.
Sensitivity level is generally in contradiction with that of the Discrimination. The higher the
sensitivity level is, the worse discrimination will be. But you can lower the sensitivity to have better
discrimination.
