GOLDEN MASK Deep Hunter Pro User manual

Golden Mask Deep Hunter Pro2 - User Guide
Page: 1 www.goldenmaskdetectors.com - Ocial Golden Mask Reseller - GMD
Golden Mask Deep Hunter Pro and Pro2 are professional metal detectors designed specically to de-
tect deeply buried large metal objects (larger than 8 cm). They have the ability to indicate the type of
the metal and a special system to signicantly reduce interference caused by power lines.
Deep Hunter Pro2 is an advanced version of the well-known Golden Mask Deep Hunter Pro with added
“automatic ground balance”, high capacity built-in battery and signicantly improved performance
based on an entirely new electronics.
Golden Mask Deep Hunter Pro2 has remarkable stability, sensitivity and accuracy that can be achieved
with very simple and intuitive settings. The apparatus provides a possibility of adjusting the frequency
of the sound indication and sensitivity; manual and automatic ground balance; “Silent” mode with two
tone indication of the type of metal, and further amplify the received signal, that increases the depth
of detection of metal objects up to 20%.
CAUTION!
Do not connect or use the “Golden Mask Deep Hunter” metal
detector if near the search coil are people or animals with heart
problems or people using electronic devices for the health treat-
ment and/or prevention! The electromagnetic eld of the de-
tector may cause fatal malfunction in electronic devices which
determine the life and health of people and animals!
Golden Mask Deep Hunter
models: Pro and Pro2

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1. Components of the detector set
1.1. Electronic block with built-in NiMH battery provides
about 18 hours of use per charge. The electronic block is
placed in a specially designed leather case with a handy
carrying strap.
It is recommened not to remove the leather pouch for the
entire lifetime of the device.
1.2. Search coils (antennas)
The detector is delivered with antenna(s), specied by the
customer during ordering. Antennas could be additionally
purchased from an authorized Golden Mask dealer.
Do not use self-made antennas or antennas from other
brands! There is a real risk of damage that is not covered by
the general conditions of the guarantee!
The main antenna of Golden mask Deep Hunter pro2 is a
square frame. It is made from PVC pipes, anges and bends
(d=32 mm). The pipes form the antenna support, to mount
the antenna cable on with cable ties Velcro type. Usage of
this antenna requires an assistant.
Round antennas are attached to a shaft. These antennas are
suitable for areas where the movement of a frame is impos-
sible, such as residential buildings (walls, oors, ceilings),
the vertical slopes of the terrain and other specic areas.
1.3. Golden Mask extra special battery charger.
1.4. This Instruction manual
2. Principle of operation
High-frequency pulse induction (advanced version) with
ash automatic ground exclusion and multi-channel signal
processing to identify the type of the metal target.
3. Controls and Indicators
Golden mask Deep Hunter pro2 uses extremely simple and
intuitive controls:
- “VOLLUME On/O” - potentiometer for adjusting the
volume and “switch On” - “switch O” of the detector;
- “SENSITIVITY” - potentiometer to adjust the sensitivity of
the detector;
- “CRACKLE On/O”- potentiometer for adjusting the
frequency of sound in the absence of metal in the detection
area of the search antenna;
In position “On.” Detector is in its core search mode. The
potentiometer is used to adjust the frequency of the
sound indication in the absence of metal in the area of the
antenna. This is strictly individual adjustment and relates
exclusively to the individual auditory characteristics of the
operator. It does not aect the performance of the detector
and is designed solely to provide a better detection of weak
signals.
In position “O.” the detector is switched to the so-called
“SILENT” mode - during the search there is no an audible
crackle sound and the presence of a metal object in the
area of the antenna is indicated by a low tone (for ferromag-
netic metals - iron) or high tone (non-ferromagnetic metals
- ferrous metals). In this mode, the detectors sensitivity is
lower, but it is suitable for work in conditions of heteroge-
neous and/or highly mineralized soil, including the pres-
ence of ceramic residues and/or small metal objects that are
not subject of the search.
- “GROUND Man/AUTO” - potentiometer for setting the
system to eliminate the inuence of the ground.
In position “Man” the detector should be set to eliminate
the inuence of ground imanually.
In “AUTO” position the detector uses a special automatic
system to eliminate the inuence of ground automatically.
- “RETUNE” - button for quick readjustment of the detector
and remove the interference in the searching process.
- “BOOST” - switch the additional amplication of the
received signal:
- “OFF” - normal depth of detection;
- “ON” - about 20% extra depth of detection.
(After turning to “ON” position you should make an initial
system setup to eliminate the inuence of the ground in
“manual mode”, or press the “RETUNE” in “AUTO mode” );
- “SIGNAL” – analogue meter indicating the strength of
the received signal and level of charge the built-in battery;
there are embedded-in 3 LEDs for indicating the type of
metal and the condition of the battery:
- “Fe”, “n-Fe” - LED indication of the type of metal -
green for ferromagnetic metals and red for non-ferromag-
netic metals;
- “Battery!” - LED for indicating less than 10% residual
charge of the built-in battery, whereby it must be loaded
(see item 8);
 -”Battery Check” - button to check the level of battery
charge. This button can be used at any time. When the ar-
row is in the red sector, the battery should be charged!
4. Eliminating the inuence of the soil
(ground balance).
Golden mask Deep Hunter pro2 use two alternative ways
of eliminating the inuence of yhe soil (ground balance) -
manual and automatic.
In “manual ground balance” the initial adjustment to elimi-
nate the inuence of the soil is made manually.
In “automatic ground balance” the detector requires no
setup through the unique to this model “Flash Auto Ground
Balance” which continuously rejects the signals caused by
the soil. (This mode may require some reduction in sensitiv-
ity of the device in some cases, especially on “heavy” soil.)
4.1. Manual “Ground Balance”
This method to eliminate the inuence of the ground re-
quires an initial setup. The purpose of this adjustment is to
remove the signal caused by the soil which for the detector
is a “subject” similar to metal. The device is able to subse-
quently automatically self-retune to the changes in the level
of the soil signal (the signal from the ground), but it is nec-
essary to set the initial level, which in dierent areas may

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be dierent. This is done in order to exploit the maximum
sensitivity of the device in all areas. The process is known as
“Ground Balance” and have to be done mandatory before
beginning oto search, no matter what the environment in
which we are looking for metal objects.
This process includes the following activities:
1.Search antenna must be placed on the ground in an
area where it is assumed that no buried metal objects are
present.
2. The “CRACKLE On/O” knob should be set to “5”.
3. Set the value of the desired sensitivity of the device
(depth of detection) with the “SENSITIVITY” (larger values
provide high sensitivity).
The values selected depend on the nature of the environ-
ment in which you will be searching - in “light” soil it can
be initiated with values around “7” ÷ “9”; in “heavier” soil it
is better to choose lower value: “5” or less in the scale of the
potentiometer. Subsequently, this value can be increased to
the maximum possible for the conditions.
4. The potentiometer “GROUND Man/AUTO” is set to “7”.
5. Turn the “VOLLUME On/O” in a clockwise direction to
“On” and set the level of the volume. Values around “6” ÷
“8” on the scale of the potentiometer are usually sucient.
6. Turn “GROUND Man/AUTO” in the direction counterclock-
wise to the emergence of sound - “hum” or “pop” (setup
known as “threshold”).
Achieving such a setup is very important for a successful
operation and maximize the potential of the detector.
7. Lift the antenna above ground surface to the height at
which it will be used during the search (about 10 cm).
If after lifting the antenna the needle on the meter “SIGNAL”
deviate to the left of the position “0”, this means that under
the antenna was a metallic object and the initial setting is
not performed correctly. Move the antenna to another loca-
tion and repeat actions 1 to 7.
8. Press and release the button “RETUNE”.
9. By the potentiometer “CRACKLE On/O” can be tuned
the the frequency of the sound that will be heard during
the searching when there are no metal in the antenna area.
When there is a metal object within the scope of the search
antenna this sound began to increase in frequency. In
order to detect the smallest changes in the frequency of
the sound indication it is very important to choose the
initial frequency. This setting is highly individualized and
performed “by ear.” While working with the accumulation
of experience operator will establish the most appropriate
setting.
10. Again press for a short time and release the button
“RETUNE”.
After completion of the above actions the setting is
completed and the detector can be used to detect metal
objects.
4.2. Automatic “Ground Balance” (Pro2)
1. The potentiometer “GROUND Man/AUTO” should be
placed in position “AUTO”.
2. Follow 1, 2, 3, 5, 8, 9, 10 listed in paragraph 4.1.
Automatic “ground balance” ensures stable operation at
maximum sensitivity (including the further enhancement of
the received signal “BOOST” = “ON”), but the overall depth
of the opening is smaller compared to manual mode.
If the device works unstable during the movement of the
antenna above the ground, the “SENSITIVITY” should be
reduced and/or the “BOOST” switched-o.
5. Search for metal objects with frame
antenna
Golden mask Deep Hunter pro2 is designed to be used
with big size antennas of type “frame”. This is the main way
to search for deeply buried metal objects. The antenna is
moved slowly at a constant height (10 cm or more ) above
the ground. Antennas of type “frame” are delivered in the
form of “antenna cable” in length corresponding to the re-
spective size of the frame and a set of plastic pipes and t-
tings for assembling the supporting structure of the frame.
The “antenna - cable” is composed of series-connected con-
ductors in multi-conductor special cable, that forms a coil
with certain parameters. It is mounted onto a frame of PVC
pipes, joints and elbows, and xed using the enclosed cable
connections type “Velcro”. The connecting cable is plugged
into the connector labeled “Coil”, which is mounted on the
right edge of the front panel of the electronic block. The
connecting cable must be tightened well after placing the
connector.
Search with “frame” needs an assistant who helps the hori-
zontal movement of the frame, using one of the enclosed
belts. With another belt operator brings the detector and
determines the height and direction of movement.
Standing inside the search coil during operation is strictly
prohibited! Adverse eects of the electromagnetic eld
can lead to serious health problems and / or injuries!
If you don;t have an assistant, you could practice “dragging”
of the antenna. For this purpose you could build a device of
type “sledge” made of non-metallic materials. This device
must provide a constant height (about 10 cm) of the frame
above the ground.
A search should always begin with a brief pressing the
“RETUNE” button, which is recommended to be done peri-
odically during the search, in order to maintain maximum
sensitivity.
The movement of the antenna must be carried out in paral-
lel strips (bands) which overlap by up to 30% in order not to
miss a portion of the eld. The speed of movement should
be about 1m/s.
6. Search for metal objects with round
(hand) antennas
When the terrain does not allow to search with a “frame”
Golden Mask Deep Hunter Pro2 can be used with smaller
(round, “hand”) searching coils (antennas) mounted on a
special shaft for individual work. Search with such antennas
does not dier materially from a search with a “frame”.

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Since the detector is not designed to detect coins and small
metal objects, even with a “hand” antenna you should not
expect to detect these objects, even if it is possible and
many users do it with success. Its purpose is to replace the
“frame” in inaccessible areas and provide an opportunity
for individual work (without assistant).
Moving with “hand” antenna should be carried out very
slowly. Unlike traditional VLF metal detectors using the
principle of inductive balance, Golden mask Deep Hunter
pro2 can detect metal objects without motion. The move-
ment is only necessary to identify the type of metal, such as
speed of about 1 m/s is sucient. The search height above
surface with “hand” antenna must be 5 cm or more.
All recommendations for the use of antenna type “frame”
apply to work with “hand” antennas also.
7. Indication the presence of a metal object
in antenna area
The signal from a metal object, located in the area of the
search antenna is indicated by increasing the frequency of
the sound signal.
Most weak signals are captured by doubling the preset
frequency of the sound with “CRACKLE On/O”. 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 (sounds
like crackles).
Each “signal” has “start” and “end”. Golden mask Deep
Hunter pro2 has very well expressed “zone” indication
signals from deeply buried metal objects in search with
frame. The length of this “zone” is a guide to the depth
of the metal objects. When this length is greater than the
size of the search antenna and has a characteristic peak in
the middle - certainly refers to a deeply buried object. If
the signal is of a short duration (area), but captures only a
central part of the antenna, then also expected discovery
of deeply buried metal object. Two-time audible indication
corresponding to the passage of the sides of the “frame”
over the metal object are sure indication of shallow buried
small metal objects.
The use of round (hand) antenna gives a slightly dierent
(more “short”) signal compared to the frame. This is due to
the physical size of the antenna and must be considered in
determining the area where the expected opening of the
metal object is.
After reaching a certain level of the signal (which will
be observed in the indicator “SIGNAL”), it will be carried
out indication of the type of the metal through the LEDs
mounted in the indicating “SIGNAL”. The red color indicates
a non-ferromagnetic metals and green - for ferromagnetic
metals (iron).
There may be a discrepancy and indication of the type of
metal as it depends on many factors which impulse metal
detectors can not always be accounted for properly.
Once “detected” metal object is repeated over alleged
passing zone, outside zone press briey and relies button
“RETUNE” and then passes from dierent directions.
With the acquisition of some experience anyone can learn
to recognize the nature of the various signals, which will
guide in making better use of the capabilities of the device.
It depends on some extent and precise adjustment of the
ground balance and properly selected starting frequency of
the sound indication.
8. The additional signal amplication
(“BOOST”)
The additional amplication of the received signal provides
increased depth of detection, but its use is recommended
only after acquiring some experience in working with the
unit.
After turning “ON” the “BOOST” set potentiometer “SENSI-
TIVITY” to “5”. All settings are carried out as specied in item
4.
Turn clockwise “SENSITIVITY” to the highest value which
is possible to achieve the setting “threshold” in “manual
ground balance” or quiet operation when running with
“automatic ground balance.”
It should be recognized that setting the apparatus of
“threshold” mode in “manual ground balance” can be per-
formed as a “GROUND Man/AUTO”, and/or a “SENSITIVITY”,
and depending on whether it is included further amplica-
tion of the signal, the set-point will be dierent.
Working with dierent values of “SENSITIVITY”, and using
the extra gain with “BOOST” assume dierent behavior of
the device.
9. “Silent” mode
In “silent” mode the detector can be switched with potenti-
ometer “CRACKLE On/O.” set to “O”. In “silent” mode the
crackles are not heard and presents of metal will be indicate
with dual tone - “high” - for non-ferrous metals and “low” -
for ferrous metals.
In this mode the sensitivity is lower, but this mode is par-
ticularly suitable for highly “polluted” sites (where numer-
ous small, mainly iron, metal objects that are not subject of
searching are present).
In “silent” mode the detector achieves a “rejection” of
adverse metals and much more ecient search of objects
with larger sizes.
10. Charging the built-in battery
To ensure maximum longevity of the built-in battery, use
only the supplied charger Golden Mask extra special bat-
tery charger.
Regularly check the charge level of the built-in battery
with the button “Battery Check” (inspection is possible
only when the detector is switched “On”) and stop work-
ing when the red LED “Battery” (located in the lower right
corner of the indicator) lights.
To charge the built-in battery:
1. Turn “O.” the detector, remove the antenna jack and put
the charger jack into the connector labeled “Charge” on the
front panel of device.

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2. Place the detector in an upright position near the contact
voltage 90 ÷ 240V and connect the automatic charger into
an outlet.
The LED mounted in the charger lights in red color.
In this state the display remains until the charging process is
complete, then the LED turns blue.
The duration of charge is about 6 ÷ 8 hours.
Remove the charger from the socket and then remove its
jack from the connector “Charge”.
3. Turn “On” the detector and check the charge level by
pressing “Battery Check” button.
Indicator must show a value greater than “7”.
If the reading is lower reconnect the charger and repeat
charging.
11. Replace the built-in battery
To replace the battery you should contact the dealer from
whom the detector was purchased. It will provide informa-
tion on how to proceed for the replacement.
Replacement the integrated battery with any other than
those oered by the manufacturer batteries is prohibitted.
10. Relative depth of detecting in dierent
modes
Golden Mask Deep Hunter pro2 enables the operator to
combine the settings of the device and its use in 8 dierent
modes of operation.
When working on “heavy soil” sites are preferred modes
with a lower number.
The relative depth of detection is determined based mode
№6 at equal values of the potentiometer for adjusting the
sensitivity SENSITIVITY.
Mode Ground
ballance CRACKLE BOOST Depth
[%]
1 AUTO O. O. 65%
2 Manual O. O. 70%
3 AUTO O. On. 75%
4 Manual O. On. 80%
5. AUTO On. O. 90%
6. Manual On. O. 100%
7. AUTO On. On. 110%
8. Manual On. On. 120%
NOTES:
1. In “manual ground balance” the value of potentiometer
“GROUND Man/AUTO”, in which achieved initial setting,
may be increased to one - two graduations on the scale.
This setting is made more “rough” sensitivity of the device
and depth decreases slightly, but achieved greater stability
and higher accuracy readings of the system to recognize
the type of metal.
In areas where previously performed initial setting of
“ground balance” and / or known its value, the potentiome-
ter “GROUND Man/AUTO” can be set this value and demand
to start without starting setup.
2. During the initial setup in “manual ground balance” do
not switch the detector in “silent” mode!
3. Use the further gain of the received signal “BOOST” in
“manual ground balance” requires mandatory doing a new
initial setup.
4. If at work appear random disturbances or prolonged
change the frequency of the sound signal (false signals) -
must be pressed briey “RETUNE”.
This action can be repeated several times until no interfer-
ence to carry out a new initial setting in “manual ground
balance” or reduce the sensitivity and/or exclude additional
signal amplication “BOOST” in “automatic ground balance”
(ie. 4).
5. When switch “O” detector can be observed for some
time lights LED “Battery!”. This is not a problem with the
battery. Only when this indicator lights up when turned
“On” (running) machine, then you should proceed to charge
the built-in battery.
6. To maximize the potential of the device during opera-
tion it is advisable to pressure short “RETUNE” from time to
time.
7. Keeping permanent height above surface during the
search will ensure optimal functioning of the systems to
eliminate the inuence of ground and thus the maximum
depth of detecting metal objects.
8. Do not use (or leave) the detector in a humid environ-
ment, wet bushes, snow and/or water – it cannot work
stability and can be damaged electronic block (not sealed)
and built-in battery. When you connect the antenna to the
electronics must prevent the ingress of water or moisture in
and around the contact pins of the connectors.
9. Work with the detector in industrial areas and places
with a large amount of scrap metal in the soil, and presence
of industrial electromagnetic interference can manifest
instability and/or inability to work. This necessarily requires
reducing the sensitivity of the device with the potentiome-
ter “SENSITIVITY”, which will reduce the depth of detection,
but this is the only way to achieve stability and demand in
such conditions.
10. After extensive work with the detector, suggesting
repeatedly accession and separation of the antenna may
appear defect connectors, which is why these activities
should be carried out very precisely and carefully. Contact
points should be kept clean and dry.
11. If after lifting the antenna from the ground indicator
“SIGNAL” show a negative value (arrow deviates to the left
of zero), this means that under the antenna was metallic
object during the preparation of the unit to work.
In such a case - move the antenna to another location, turn
on the device again and do again initial settings (item
4), then press briey button “RETUNE” and continue the
search.
12. Please leave the detector switched “On” for about 15
minutes in the area of work before it can be used to search

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for metal objects. During this time the electronics are
“self-adjust” to the ambient temperature and the detector
reaches optimum operation.
13. Do not attempt to use the detector after tripping indica-
tion consumed charge the built-in battery. This can result in
damage to electronics.
14. Always keep the electronics clean from dust, moisture
and fat. Use only dry and soft cotton cloth for cleaning.
15. If you use the detector in areas where it is possible
presence of buried weapons and/or explosives provide all
precautions because the manufacturer and dealers are not
responsible for the consequences resulting from such use
of the detector.
16. If you are looking for metal objects in areas where it is
possible to be laid underground lines on the grid - must call
the relevant authorities responsible for the maintenance of
these lines or perform excavation without their permission.
This is especially important for regions in and around the
settlements and industrial sites.
The same goes for underground gas supply installations of
oil and/or fuel and other underground facilities.
17. The use of high-quality headphones (not available at
box) connected to the socket “PHONES” helps achieve even
results.
The text of this User Manual is provided by the manifacturer of the device.
The manufacturer and dealer are not liable for damages or injuries that could result from
ground digging activities.

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125x125 cm
180x180 cm
FRAME COILS ASSEMBLY SCHEME
The frame coil consists of plastic pipy parts that should be
inserted one into another and form the frame square. (see
picture bellow).
The acual coil is a special cable-like circle, that should be
attached to the carrying frame. The plastic frame is used to
support the search coil circle cable. The coil cable CANNOT
be inserted in the pipes. Instead, the cable is attached to
the frame with welcro straps. The frame only supports the
coil cable.
After you asseble the frame, you have to attach the coil
cable circle to the plastic frame using the velcro straps.
Finally, attach the carying straps on two opposite sides
of the frame, attach the coil cable to the main device and
you’re ready to go.