Ocean Reef g.divers Benutzerhandbuch Seite 7

N
ote
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.
For more extended information: www.oceanreefgroup.com
M100 G.DIVERS TRANSCEIVER
PORTABLE SURFACE UNIT
1 . TECHNICAL CHARACTERISTICS
Main parts of the unit are:
• Battery housing: inside the battery housing there is a label with the serial
number and the polarity to insert the battery. Battery should be a 9volt alkaline
one, rechargeable batteries will last shorter. The autonomy with the alkaline
battery (receiving mode) is around 30 hours with 30 minutes of low battery
alarm (one "beep" every 30 seconds)starting when voltage goes below 6.8volt.
• Antenna: It consist of a 10 meter cable directly connected to the
main unit, at the bottom end there is the ceramic antenna, made to
transmit and receive ultrasound to a frequency of 32.768 kHz.
• PTT button: it is a magnetic one, positioned right below
the headset connector on the main unit
• Headset and microphone assembly with adjustable volume.
Battery housing
Belt clip
8 Pin Plug for headset with
mic and adjustable volume
Push to Talk button
8 Pin Plug rubber protection
10m Antenna cable
Ceramic Ultrasoud
transducer
• Metal clip to attach the unit to the belt of the operator.
• 8 Pin plug to connect the headset with microphone.
2 . ATTACHING THE SURFACE UNIT TO THE BELT
The M100 G.divers is designed to comfortable and easy to use. The main unit can be
clipped to a belt or jacket, giving the operator an increased range of motion from other
surface units.
3 . CHECKING BEFORE USE
Once the battery has been installed and you have checked that the cap and cover have
been closed properly, insert the headset with microphone in the plug on the main unit,
the M100 G.divers will turn on automatically. You will hear a "beep" indicating activation.
Run a finger along the black cylinder at the bottom side of the antenna. You will hear a
"zzzzzz" type sound coming from the speaker.
Try to bring the antenna transducer near the antenna on a M101A G.divers unit, or the
antenna on a GSM G.divers unit (about 5 cm / 2 inches). You should also be able to hear
the communication when the unit is not immersed in water.
If you hear a repeated "beep" (about every 30 seconds) this means that the battery is
running low. Change it.
4 . BASIC INSTRUCTIONS FOR COMMUNICATE
WITH DIVERS UNDERWATER
The following is the recommended operating procedure:
• Ensure the battery is properly installed with the correct polarity.
• Close the battery compartment. You can use some
grease to make this operation easier.
• Attach the main unit to a secure place on your person such as a belt.
• Lower the transducer into the water. If you are on a boat, lower the transducer
until it clears the hull. Under non circumstances should the transducer
lie on the sea floor, this will reduce the signal strength and range.
• Connect the headset to the main unit, the unit turns
on automatically upon connection.
• The unit is now in the receiving mode. To send a message push and hold
the PTT button located on the main unit. After a short "beep" you may begin
speaking. When you release the button, the unit will return to receive mode.
• To improve the communication quality set the antenna
the near as possible to diver's depth.
• It is important that the transducer does not lay on the bottom
• When speaking to divers, keep in mind that they have a lot of things going on while
underwater. It is better to have divers attention before starting the communication.
Owner's Manual
5