GOLDEN MASK Deep Hunter Pro 3 Instruction Manual page 8

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GM Electronics Ltd
Unlike traditional VLF metal detectors, using the principle of
inductive balance, the Golden Mask Deep Hunter Pro3 can
detect metallic objects without motion. The movement is only
necessary to identify the type of metal, a speed of about one m/s
is sufficient for the discrimination system to function properly.
The search height above the ground surface with the round coils
antenna must be constant (about 10 cm or more).
If you hold the coil too low or touch the ground, you will
experience faulty signals. All activities and settings recommended
for the use with "frame" coils apply as well to searches with "hand"
the round coils.
7.Indication of the presence of a metal object within the coil
area: The signal from a metal object, located in the area of the
search coil is indicated by increasing the frequency of the sound
signal ("ticking" sound).
Most weak signals an operator is able to notice are improved by
doubling the preset frequency of the sound with the "CRACKLE
On/Off" knob. This is perceived accurately by the human ear and
therefore it needs to be set very precisely, so that the sound
frequency without the presence of a signal to be only a few Hz
(slow "ticking" sound).
Each "signal" has "start" and "end". The Golden Mask Deep
Hunter Pro3 has a very well expressed "zone" indication from
deeply buried metal objects with the use of a frame coil. The
length and width of this "zone" is a guide to the depth/size of the
metal objects. When this length is greater than the size of the
search antenna and has an expressed peak in the middle this
certainly indicates a deeply buried metallic object. If the signal is
of a short duration (small area), but is captured only in the central
part of the coil, then you can also expect a deeply buried metal
object. Double audible responses corresponding to the passage
of the front and rear ends of the "frame" over the metal object are
a sure indication of relatively small metallic object not deeply
Golden Mask Deep Hunter Pro3 – Instruction manual
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