ALEX359 GOLDEN MASK 4 User manual

ALEX359 LTD.
contact information
http://www.emporion359.com
Vivatel: [phone]
Globul: [phone]
INSTRUCTIONS FOR USE
GOLDEN MASK 4
METALDETECTOR
18KHZ
Before using your detector for the first time, we strongly recommend that yo
u read this
instruction manual carefully un order to make full use of its abilities for a longer time.
DO NOT USE THE DEVICE INDOOR!

2
Golden Mask 4
CONTENT
1. Qualities.................................................................................................................3
2. Specifications.........................................................................................................3
3. Features..................................................................................................................3
4. Assembly/ Disassembly ………………..............................................………..……4
5. Control Panel and Devices ...................................................................................5
6. How to Use the Metaldetector ………………………………..................................6
- Setting the metaldetector in a “manual ground balance” mode (GB
MAN)........................................................................................................................6
- Setting the metaldetector in an “automatic ground balance” mode (GB
AUTO)......................................................................................................................7
7. Audio Discriminators.............................................................................................7
8. Charging the batteries...........................................................................................8
9. Warranty and Service……………….....................................................................10

3
Golden Mask 4
Before using your detector for the first time,
we strongly recommend that you read this
instruction manual carefully un order to
make full use of its abilities for a longer
time.
DO NOT USE THE DEVICE INDOOR!
Golden Mask 4 is specifically designed to
provide maximum effectiveness on all types
of soils. The major advantage is its
recovery speed, which places it in the
premium position to operate in areas
heavily contaminated with iron pollutants.
The metaldetector works with search coils
with a wide scanning range (Double D)
which greatly improve the machine's
performance on mineralized soils*, while
the geometry of the search coil allows for a
much better ground penetration.
Golden Mask 4 is produced from high-
quality components and materials to ensure
maximum product life of the metaldetector.
* mineralized soils – a term used to describe a type
of soil which possesses natural magnetic properties
or has acquired them as a result of human activity
(contamination with iron and ceramics). The term
exludes sea sand which, albeit a conductor, is not
magnetic.
1. Qualities
 Golden Mask 4 is available with a
basic search coil 10.5'' (27 cm)
made of ABS and a special design
providing better mechanical and
thermal stability;
 A special cable, made of high-quality
materials and with a common shield,
designed to provide for greater
mechanical strength and extended
product life of the coil
 Light and strong boxes of ABS
 Lightweight metaldetector with a
perfect balance
 Strong handle
 A three-piece rod
 Lower rod made of carbon
 Smart automatic charger, especially
designed for the Golden Mask
 5-year warranty of the electronics
2. Specifications
 Operating frequency – 18 kHz
 Operation mode – motion
 Automatic ground balance
 Manual ground balance
 Multi-tone discrimination
 Audio discrimination
 Adjustable scale of metal
discrimination
 Adjustable search depth
 Adjustable audio tone
 Adjustable audio volume
 Innovative, completely redesigned
electronics, combining productivity
and enhanced sensitivity
 Charger – a pack of 10 rechargeable
batteries 1.2 V AA/ 1000 mAh
 Single charge operating time:
minimum 20 hours
 LED low battery indicator
 Headphones jack
3. Features
The metal detector consists of five parts: 1.
search coil; 2. shaft, connecting the coil
with the electronic block; 3. electronic block;
4. armrest and 5. battery holder.

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Golden Mask 4
1. Standard coil
Golden Mask 4 features a standard 10.5”
(27 cm) DD search coil. The coil is made
from ABS plastic and its lower end is
covered with epoxide resin which adds
strength and hermetic seal to the whole
construction. The search coil has good
sensitivity to both small and large objects.
Optional coils
DD 7” (18 cm), DD 8” (20 cm), DD 8x10”
(20x25 cm), DD 10X12” (25x31 cm)
DD 12.5” (32 cm), 12.5x15” (32x38 cm);
The smaller coils have better sensitivity to
small objects (coins) and are preferably
used on heavily polluted terrains. The larger
coils (DD 32 and DD 32x38) have better
sensitivity to larger objects and are suitable
for deep underground search, having 10-20
% better sensitivity than DD 27 cm.
2. Shaft
The shaft is made of aluminum tube and
features a carbon lower rod (not metal) to
avoid interference with the coil
performance.
3. Control box with electronics
The control box is made of extremely robust
ABS plastic.
4. Armrest
The armrest is made of aluminum for
greater strength and its diameter is
adjustable for a better grip. The foam hand
grip is attached at the front end of the
armrest.
5. Battery holder
The battery holder is made of plastic and
contains a pack of 10 batteries AA NiMH
1,2 V/ 1000 mAh.
4. Assembly/ Disassembly
Take the lower rod (the carbon part), place
the rubber sealing in the openings of the
stem and align them with the openings of
the mounting ears on the search coil. Insert
the plastic bolt into the openings and press
it until it comes out of the opposite end,
then screw the plastic nut and tighten it
gently.
Warning:
It is essential to replace the rubber sealing
when it wears off to avoid over-tightening of the
screw nut which may cause deformation of the
mounting ears of the search coil and overall
distortion of the coil. Deformation of the search
coil leads to severe deterioration of the metal
detector parameters!
Take the middle rod, unscrew plastic nut
No.6 and mount the lower (carbon) rod.
This telescopic connection allows adjusting
the total length of the shaft according to
your height. Make sure that the distance
between the aluminum part and the search
coil is at least 30 cm. To fix the length,
tighten the plastic nut.
Take the electronics component, unscrew
the big plastic screw nut No. 7 and mount
the shaft with the search coil. Then screw
the nut back on until the movement of the
coil against the shaft is restricted. Wind the
cable tightly upwards around the shaft and
make sure to leave the cable loose at the
lower end near the search coil to avoid
damage to the cable while the
metaldetector is folded for transportation.

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Golden Mask 4
Warning:
90 % of metaldetector failures are caused by
damaged cables as a result of negligent use!
Afterwards, plug the cable jack into the
socket of the detector and tighten it gently.
After this step, the detector is ready to use.
To disassemble the detector, follow the
instructions in reversed order.
5. Control Panel and
Devices
Control features
 “POWER LEVEL” potentiometer –
sets the audio threshold and adjusts
the search depth of the
metaldetector;
 “AUDIO FREQ.” potentiometer –
adjust the audio tone;
 “GB” switch – switches between the
operation modes (manual/ automatic
ground balance)
 “GROUND BALANCE”
potentiometer – eliminates the
ground interference on the operation
of the metaldetector while in manual
ground balance mode;
 “DISC” switch – selects between the
two types of discrimination – multi-
tone discrimination or audio
discrimination;
 “DISC. LEVEL” potentiometer –
sets the rejection level of iron
objects;
 “VOLUME” potentiometer –
switches on the metaldetector and
sets the audio volume;

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Golden Mask 4
 “HEADPHONES” jack – mono
headphones could be connected if
needed;
 “LOWBATTERY” LED indicator –
indicates that the battery is low.
6. How to Use the
Metaldetector
The “VOLUME” potentiometer is used to
switch the metaldetector on and to adjust
the audio volume.
1. Setting the metaldetector in a
“manual ground balance” mode (GB
MAN)
- The “GB” switch is set to “MAN.” and
the “DISC” switch is set to “MULTI
TONE”
- The “POWER LEVEL” potentiometer
is positioned so that the detector makes
a faint buzzing sound
- Use the “AUDIO FREQ.”
potentiometer to choose the preferred
audio tone
Start moving the search coil slowly up and
down (Figure 1) and slowly turning the
“GROUND BALANCE” potentiometer.
fig.1
When the potentiometer is turned far to the
left, you hear a low tone when the search
coil approaches the ground surface, while
in a far-right position, when the coil moves
away from the ground – a high tone. Turn
the potentiometer until the tone does not
change or changes only slightly.
This mode is suitable for using the
metaldetector on low mineralized soils.
Warning:
Keep the metaldetector away from metal
objects while setting up the balance!
In a manual ground balance mode, the
metaldetector has higher search depth than in
automatic mode!
To search for metal objects, you need to
move the search coil against the ground
surface (Fig. 2, Fig. 3). Always move the
search coil in close proximity to the ground
since lifting it up reduces its search depth.
The sweeps must be as smooth as
possible. Faster coil sweeps (Fig. 2) help
detect shallow targets (metals buried near
the surface), while slower sweeps allow
searching for metal objects deep
underground.
fig. 2

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Golden Mask 4
fig.3
The precise location of the detected metal
is determined by moving the search coil
along two perpendicular axes (Fig. 4).
fig.4
2. Setting the metaldetector in an
“automatic ground balance” mode
(GB AUTO)
Set the “GB” switch to “AUTO”.
In this mode, the “GROUND BALANCE”
potentiometer does not work!
This mode is used on strongly mineralized
soils when the detector is unstable in
manual ground balance.
This is a suitable metaldetecting mode for
beginners.
7. Audio Discriminators
Metal discrimination is obtained through two
audio discriminators.
1. Operation of the Audio Discriminator.
Set the “DISC” key to position “AUDIO”
and the “DISC LEVEL” potentiometer to
position 2-3. Setting “DISC LEVEL” to a
higher position improves metal
discrimination, but at the expense of the
search depth! If you want to discriminate
most non-ferrous metals on the surface
(modern pollutants), the potentiometer must
be set to a position above 7.
When a non-ferrous metal is detected (gold,
silver, copper, bronze) the sound is deep-
toned. When detecting a ferrous metal
(iron), the sound is crackling and
interrupted.
If the “DISC LEVEL” potentiometer is set
to its maximum left position, the
metaldetector starts working in “ALL
METALL” mode without metal
discrimination!
2. Operation of the Multi-tone Discriminator.
Set the “DISC” key to position “MULTI
TONE” and the “DISC LEVEL”
potentiometer to position 2-3. Setting
“DISC LEVEL” to a higher position
improves metal discrimination, but at the
expense of the search depth! If you want to
discriminate most non-ferrous metals on the
surface (modern pollutants), the
potentiometer must be set to a position
above 7.
When a non-ferrous metal is detected (gold,
silver, copper, bronze) the tone is high.
When detecting a ferrous metal (iron), the
tone is low.
If the “DISC LEVEL” potentiometer is set
to its maximum left position, the
metaldetector starts working in “ALL
METAL” mode without metal discrimination!
Recovery Speed of the Metal detector
Golden Mask 4 incorporates electronics,
specifically designed to provide high
recovery speed to enhance the productivity

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Golden Mask 4
of the metal detector on highly iron-
contaminated terrains. To attain maximum
recovery speed of Golden Mask 4, set the
“DISC LEVEL” potentiometer to position 2
and the “DISC” switch to “MULTI TONE”.
Search Depth for Metal Objects
The detection depth for metal objects
depends on the position of the “POWER
LEVEL” potentiometer. For maximum
depth, turn the potentiometer to the right
until you reach the audio threshold.
The detection depth for metal objects
depends on a few factors.
1. Size of the object
The greater the surface area of the object,
the higher the detection depth!
2. Orientation of the object with respect
to the search coil
Horizontally positioned coins (objects) are
more easily detectable at greater depths!
3. Soil type
The detection depth is reduced in
mineralized soils and, respectively, the
depth is increased in homogeneous sandy
soils.
4. Discrimination level
Each metal detector, regardless of its brand
and model, obtains maximum depth in a
non-discrimination mode (“ALL METALL”
mode). The higher is the metal
discrimination; the lower is the detection
depth. On low mineralized soils the level of
discrimination has the smallest impact on
the detection depth and the parameters are
close to those in “ALL METALL” mode.
5. Search coil size
Smaller search coils localize and detect
small metal objects (coins). Larger search
coils (>32 cm) have a greater search depth
and are more suitable for detecting larger
objects.
6. Time of the object buried
underground
Metal objects which have been buried more
than 5-6 months underground emit a
stronger signal than at the time of being
buried.
7. The experience and the skills of the
operator
8. Charging the batteries
Rechargeable batteries have a life-span of
about 500-600 charge/discharge cycles
before they need replacement. However,
these values are attainable under perfect
laboratory conditions.
The metaldetector is equipped with NiMh
batteries 1000 mAh. Prior to using the
detector, the batteries must be charged with
the automatic charger included in the set.
The single charge operating time is
minimum 20 hours (using headphones
significantly extends the operating time).
During operation, the “Low battery”
indicator will signal when the batteries need
a recharge and you need to stop working.
Plug the charger jack into the “CHARGE”
socket and connect the device to an electric
network of 220 V. The LED light of the
charger turns red to indicate that there is
electric supply. Charging takes about 4
hours, depending on the discharge level
and capacity of the battery. The LED light
turns green when charging is completed.
You do not need to supervise the charging
process as the charger switches off
automatically and the battery cannot be
damaged regardless of the time spent in
charge mode.

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Golden Mask 4
In reverse order, disconnect the device
from the 220 V network and unplug the jack
from the “CHARGE” socket.
The rechargeable battery could also be
charged using your car cigarette lighter via
a special charging device. Follow the
instructions for use of the specific charging
device.
To ensure maximum battery life:
 do not interrupt the battery charging
before the process is completed;
 recharge the battery when it fully
discharges;
 use only the chargers included in
your metaldetector set.
The charger has the following additional
capabilities:
Indication of reverse polarity or short circuit
in the cable by blinking red light of the LED.
Practical Advice
Keep your metaldetector away from water –
rain or snow can penetrate the electronic
block and the battery holder, and this can
damage your detector!. It is safe to use it on
wet grass because of the hermetical sealing
of the search coil.
Warning:
Do not leave your metal detector on wet
grass or snow to avoid moisture penetrating
the electronic block and especially the
battery holder! During assembly of the
detector in wet or snowy conditions,
avoid moistening the cable plug!
Operating the metal detector in residential
and industrial areas may be hampered by
electromagnetic interference or the
presence of modern iron pollutants. For a
steady operation of the detector, you need
to decrease the power (POWER LEVEL)
and increase the discrimination level (DISC
LEVEL) which, respectively, decreases the
search depth.
Use only quality headphones, preferably
with an in-built potentiometer for audio
adjustment.
After continuous work with the detector and
multiple plugging/ unplugging of the cable
jack into/from the socket of the control box,
it is possible that the connection between
the two deteriorate (when gently touching
the cable jack, the metal detector makes a
sound as if detecting metal). You should
carefully clean the contact surface of the
cable plug with a needle or a fine file. For a
better result, slightly bend inwards all
openings of the cable plug.
Do not switch on the detector when the
outside temperature significantly differs
from the temperature indoors (i.e. in a warm
room). Wait for about 20-30 minutes until
the detector adjusts to the temperature
change before you switch it on.
Do not switch on the detector while the
batteries are being recharged. This can
damage the electronics.
To clean the metaldetector after use,
remove the dust and sand, and wipe with a
damp cloth. Do not use alcohol, petrol,
koresilin and other solvents as they can
damage or remove the symbols on the
control panel. If you operate your
metaldetector on terrains where it is
possible to localize ammunition or other
explosives, take special care while
excavating, because the manufacturer is
not liable for your actions.

10
Golden Mask 4
Warranty and Service
Warranty card №_______________________ / Date: _______________________
User: _________________________________________
Dealer:________________________________________
The Golden Mask 4 metaldetector has a 5-year warranty of the electronics covering
the labor costs and materials, and damages not resulting from deliberate or negligent
actions.
The warranty is voided in the cases of mechanical damage to the respective
components, incorrect use or unauthorized access and repair (opening of the
electronic block or the power block, wearing, breaking or damaging the search coil,
the cable and cable plug, damaging the battery as a result of using other chargers,
using incompatible search coils). To undergo repair under warranty, the metal
detector must be shipped to our service office.
All shipment and delivery fees are paid by the customer.
Description of warranty problems:
No Date Description of a problem Solution