Ocean Reef GSM Cube3 User manual

OWNER’S MANUAL

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Warnings………………………………………………………………..4
Introduction……………………………………………………………..5
Attaching the CUBE³ to a full face mask……………….……………7
Installing the microphone…………………………….………………..8
Procedure for the assembling of a PTT & D-mic microphone……..9
Installing the battery…………………………………………………...9
Checking before use………………………………………………….11
Functioning of the GSM CUBE³ with
the ALPHA-PRO X-DIVERS…………………………………………12
Functioning of the GSM CUBE³ with the VHF system..…………..13
Instructions for underwater communication…………………….….14
Precautions…………………………………………………………….15
Warranty………………………………………………..……………….17
Troubleshooting………………………………………………………..18

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WARNINGS, CAUTIONS, NOTES
Pay special attention when accompanied by these symbols:
AWARNING indicates a procedure or situation that, if not avoided, could
result in serious injury or death to the user.
ACAUTION indicates any situation or technique that could cause damage to
the product, and could subsequently result in injury to the user.
ANOTE is used to emphasize important points, tips, and reminders.
RWARNINGNING
WARNING
Continue to breathe while surfacing from a dive even if you are
listening to the communications unit. Lung expansion injuries may
result if you ascend while holding your breath. DO NOT STOP
BREATHING WHILE SURFACING FROM A DIVE.
If you are going to speak while diving you should take in a larger
than normal breath. ALWAYS MONITOR YOUR PRESSURE
GAUGE.
Before attempting to use this device in open water you must
practice using the unit in confined water (such as a pool).

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INTRODUCTION
The GSM CUBE³ is an underwater communication unit capable of
operating wireless, hardwired or interfaced with a VHF radio. Three
units in one!
If the unit is connected to the ALPHA PRO X-DIVERS surface unit
via cable, then communication is on full duplex with the surface unit
(no need to press the transceiver button to communicate).At the
same time the unit is capable of communicating with other wireless
underwater units such as the OCEAN REEF GSM, GSM DC, GSM
G POWER, GSM G POWER SL, M105 and M100. By pressing the
button of the PTT the unit is transmitting on channel 1 of ultrasonic
frequency (channel 1 - 31.768 kHz).
The GSM CUBE³ can be connected to a VHF radio (see page 13)
through the waterproof carrying bag and other relevant connectors
and interfaces.
The GSM CUBE³ is equipped with a special plug for the six pin
connector which can be used when the cable is not connected.
You can also connect and disconnect the unit to/from the cable
while diving.

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GSM CUBE³ PARTS

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Attaching the CUBE³ to a full face mask
The CUBE³ can be attached to any full-face mask equipped with a
female DIN connection for the transmission and microphone button
and two quick connections. For optimum functioning we
recommend using the unit on OCEAN REEF Space masks, as the
unit’s acoustic characteristics are designed to suit these masks.
How to install the NACS tm (neptune adjustable communication
support)
Hold the NACSTM as pictured with the transparent
stationary part to the left and the black rotating part to the
right.
Remove the o-ring from the notch at the end of the black
rotating part of the NACSTM (see drawing).
Slide the CUBE³ onto the NACS TM
Replace the o-ring on the notch at the end of the black
rotating support. The left middle strap (of the octopus
strap) must be positioned over the rotating support.
Attach the NACSTM to the mask by positioning the holes
of the transparent part over the black buttons of the
clamping band and pressing. These buttons are the
same ones that hold the protective shield when the mask
is not in use. Make sure the protective shield is removed
prior to attaching the NACSTM to the mask.
The black rotating part of the NACSTM has a vertical rotation angle
of 25°. After wearing the mask you will find the most comfortable
angle for you. If you prefer to move the CUBE³ closer or farther
away from your face, simply slide the CUBE³ over to the selected
position and move the o-ring to a different notch.
The use of the NACSTM allows for a more comfortable wearing of
the mask and best strap adjustment.
The CUBE³ must always be used with the NACS.
NACS tm is a patented product of OCEAN REEF.

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Installing the microphone
The CUBE³ uses a dynamic microphone,
”D-Mic” encapsulated and protected by a
hydrophobic membrane.
The microphone allows dependable clear
reproduction of the human voice. It
removes unnecessary noise such as the noise of bubbles being
exhaled from the mask.
The D-Mic uses a hydrophobic membrane that allows air to pass
through while protecting the microphone from water. This
membrane also reduces the “muffling” effect allowing a phonic
performance that is very high.
Another characteristic of the hydrophobic membrane is its
mechanical strength. The D-Mic, shown in figure 4, is fitted with a
membrane that is designed to handle pressure of more than 14.7
PSI. If the membrane ruptures, the microphone will flood causing
transmission to cease. Remember, the Neptune masks are
designed to operate under “balanced” pressure. If the mask is
removed underwater the microphone WILL NOT suffer any damage.
However, continuing to dive WITHOUT the mask sealed on the face
the microphone may be damaged if the limits, indicated above, are
exceeded Iin relation to the depth at which the mask was removed.
Ascending must be done in accordance with the dive tables or dive
computer to avoid decompression problems. The communicator
and microphone should be rinsed with fresh water (immersed, not a
strong “jet” of water) after each dive and should be placed in a well
ventilated area that is not exposed to direct sunlight to dry.

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Procedure for assembling the PTT & D-mic
• Unscrew the communication port plug (labelled
COMMUNICATION), insert the PTT & microphone through the
mask into the “communication” port with the hydrophobic
membrane facing the visor.
• If the membrane is turned the wrong way, facing the mouth,
phonic performance will be diminished. Check that the
microphone is in the position shown in pictures. Move the
microphone so that it does not interfere with the diver’s lips or
the pressure compensation bracket.
Installing the battery
GSM CUBE³ (when used via wireless) works with a conventional 9V
alkaline battery.
Do not use manganese batteries.
(1) Unscrew the two screws on the cover and remove the cover and
cap with its O-ring.
(2) Remove the dead battery from the main compartment.
(3) Install a new battery in the compartment,
making sure that the polarity is correct (see label
on the inside).
(4) Clean and lubricate the O-ring. Reposition the
cap. The cap MUST face the right direction. The flat
side of the battery cap must be on the front side in
order to get a good seal.

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When the battery has been installed, check that the battery housing
and O-ring are clean. The O-ring must always be lubricated with a
thin layer of silicone lubricant.
(5) Holding the cap in position, position the cover and screw the two
screws in place until they are tight. Do not over-tighten the screws!
A screwdriver for GSM CUBE³ assembling/disassembling is
provided in the com unit package.
If the CUBE³ is not going to be used for a while, the battery
should be removed. The cap must be stored in the battery
compartment. This will ensure that the unit will work properly
for a longer period of time.

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Checking before use
Once the battery has been installed and you have checked that the
cap and cover have been closed properly, dampen your fingers and
touch the two screws (On/Off switch contacts) and activate the
polarity circuit. You will hear a “beep” indicating activation.
If you hear a repeated “beep”, about every 30 seconds,
this means that the battery is running low. Change it.
Run another finger along the antenna. You will hear a “zzzzzz” type
sound coming from the speaker. Try to bring the antenna transducer
near the antenna on a Digital M105 unit, or the antenna on a GSM
unit (about 5 cm / 2 inches), keeping your fingers on the On/Off
contacts. You should also be able to hear the communication when
the unit is not immersed in water.
Begin speaking while holding the button down. Any units near your
CUBE³ should pick up your voice.
Put on a full-face mask so that it seals properly.
Check that there are no leaks between the edges and your face.
The CUBE³ speaker should be very close to your ear. Check that
the reception device is not too far from your ear.
Check that the microphone is installed correctly, following
the instructions above. Handle the microphone carefully.

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Functioning of the GSM CUBE³ with the ALPHA-PRO X-DIVERS
The GSM CUBE³ is made to allow the connection to the ALPHA-
PRO X-DIVERS.
You can connect the CUBE³ to the cable outside or inside the water;
simply take away the plug from the 6 pin connector and plug it into
the ALPHA-PRO X-DIVERS cable.
If you are using the unit via wireless, your communication will
continue to function and you will be able to communicate via cable
too.
Keeping the PTT button pressed you will be able to speak wireless
and via cable at the same time, without pressing the PTT button you
will talk only to the surface via cable.
Receiving mode will always be simultaneous.
If the battery of your CUBE³ has run down (or you are not using the
battery) you will still be able to communicate via cable.
On theALPHA-PRO X-DIVER surface unit the recall light will turn
on as soon as the battery no longer functions!

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Functioning of the GSM CUBE³ with the VHF system
The GSM CUBE³ can also become a GSM-VHF by interfacing it
with the appropriate VHF interface and radio.
The GSM VHF is a very unique communication system with the
integration of Ultrasonic / Underwater communication features and
the VHF long distance communication requirements. It is mainly
dedicated to Rescue Team Divers and was developed thanks to the
collaboration with the Italian Red Cross.
The unit is comprised of a complete GSM standard hardwired to a
specially modified waterproof radio carrying bag in which a number
of different models of VHF radios may be inserted and interfaced.
It is necessary to specify the kind of radio used and OCEAN REEF
will customize the required interface cabling.
For more information about the GSM-VHF please refer to the GSM-
VHF manual.

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Instructions for underwater communication
When speaking to other divers, remember that they are diving.
It is best to attract their attention before sending a message.
Talking and listening while underwater requires practice. With
experience, divers will become more proficient in the use of
the communications system.
Speak slowly, and pronounce each word clearly. Only speak
after having sent a call impulse by pressing the button on the
microphone. It is advisable to practice in a swimming pool
before using the device in open water.
Bubbles, and especially, small air bubbles, that are in contact
with or near those communicating reduce the transmitting
power. When using the unit in swimming pools or in highly
oxygenated water, coat your antenna with silicone lubricant.
This will make it more difficult for the air bubbles to adhere to
it.
Obstacles such as rocks may reduce your communication
range.
When exhaling, reduce the emission of bubbles as far as
possible (WITHOUT STOPPING EXHALING WHEN
SURFACING). Bubbles cause noise or ultrasonic base signals.
It is normal to receive a background signal like clutter.
Movement of sand and pebbles on the seabed, marine motors,
cetaceans, and other sources can create vibrations in the
water that give rise to a range of ultrasonic waves that can be
picked up by the GSM.
When using the device in shallow water, you may experience
difficulty communicating because:
(1) The surface is full of air bubbles formed by the waves.
(2) The sand under water is causing ultrasonic noise due to
the waves.

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PRECAUTIONS
Do not use solvents (such as diluents) to clean the unit. They
can cause irreparable damage. Only use neutral detergents.
Use running water to remove the seawater from your GSM CUBE³
after use. The system must be kept completely dry and in good
condition.
Do not twist the microphone cable.
Do not expose the unit to direct sunlight.
Do not leave the unit in your car.
Do not keep the unit in places that are too hot or too cold, such
as near air conditioners.
Do not keep the unit near magnetic fields.
Do not allow it to fall or be knocked around.
Replace the battery when it is running low. When not using the
unit for extended periods of time, remove the battery from its
housing to prevent damage.
Only use 9V alkaline batteries. Install them in the battery
housing, ensuring that they are of the correct charge and
polarity. Do not activate the polarity circuit using metal wires or
pieces of metal.
Make sure there is no dirt, debris or water in any part of the
unit, especially in the battery housing or under the O-ring. If
any dirt, debris or water is found, remove it.
When replacing the battery check the O-ring for damage. If it is
damaged, replace it. The O-ring must be lubricated with a thin
layer of silicone lubricant.
Do not dismantle or repair this unit by yourself.
Follow the instructions for correct maintenance of the
microphone and battery housing, given in previous chapters.
If the battery compartment should be flooded, remove the
battery, rinse the compartment with fresh water and leave to
dry. Remove any debris, and clean the spring contacts, then
install a new battery. If the unit does not function, check the
state of the microphone.

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Routinely clean the microphone contacts and check the
integrity of the hydrophobic membrane and the case. If the
microphone is flooded, it CANNOT be recovered and must be
replaced.
Do not touch the hydrophobic membrane with any sharp
objects that may damage it.

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Warranty
(1) OCEAN REEF communication units are guaranteed to be free
of material or manufacturing defects for a period of 24 months from
the time the unit is purchased. For the duration of the guarantee,
the Company’s responsibility is limited to replacement of any parts
that are defective in our opinion, and that have not been used
incorrectly or handled negligently. The unit must be returned to the
outlet from which it was bought, along with the warranty card. The
cost of transport is to be prepaid by the customer.
(2) Even during the guarantee period, this guarantee shall not be
valid where:
· Damage was caused by incorrect handling or carelessness.
· Damage was caused by the unit falling after it was purchased.
· Damage caused by fire, earthquake, floods, lightning, or other
natural disasters, pollution or electrical charges.
· The warranty card is not produced.
· Warranty not registered
(3) Additional warranty cards cannot be issued. Keep your
certificate in a safe place where it cannot be lost.

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TROUBLESHOOTING
Problem Possible cause action
The unit does not
switch on (it still
works via cable)
The battery is
missing, the contacts
are isolated, the
battery is dead
Insert a charged
battery. Remove
isolation caps
The polarity is
inverted. Insert the battery correctly
The contacts are
broken Send for servicing.
Battery compartment
flooded Remove water, rinse with fresh water,
leave to dry.
Lubricate the O-ring.
Clean Contacts.
Insert new battery.
Battery compartment
flooded O-ring dirty, incorrectly positioned
or broken
Clean the O-ring,
lubricate
With silicone
lubricant. If broken,
replace. Proceed as
per previous point
Cap broken Replace the cap.
Seating for cover
screws broken Send for servicing
The unit switches on
and receives but
does not transmit
both ways.
Microphone flooded
or defective Change the microphone
Microphone contacts
disconnected or dirty Clean the contacts with fresh water
Cable between
microphone and
casing broken
Send for servicing

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The unit does not
receive via wireless. The transmission unit is not working Try another transmission unit
Speaker or internal
components
defective
Send for servicing
The unit does not
receive via cable Broken cable Send for servicing
Surface unit out of
power Recharge surface unit
The unit transmits
continually via
wireless
Call button defective Send for servicing

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MESTEL SAFETY S.r.l.
ViaArvigo 2, 16010 Genova (Italia)
Phone [phone] Fax [phone]
e-mail [e-mail]
OCEAN REEF, Inc.
1699 La Costa Meadows Dr. Suite 101 San Marcos, CA 92078
Phone [phone] Fax [phone]
OCEAN REEF on the Internet
http://www.oceanreefgroup.com
© OCEAN REEF 2008