Ocean Reef OCEANREEF GAMMA ALPHA HD User manual

GAMMA ALPHA HD
OWNER’S MANUAL

GAMMA ALPHA HD rel. 1.0
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GAMMA ALPHA HD - OWNER’S MANUAL
1 - INTRODUCTION
2 - GENERAL WARNINGS / OWNER’S RESPONSIBILITIES
3 - REMINDERS AND TIPS FOR USE
4 - PACKAGE CONTENTS
4.1 SURFACE UNIT
4.2 PROFESSIONAL SURFACE/DIVER AUDIO CABLE
4.3 PROFESSIONAL SURFACE/DIVER VIDEO CABLE
4.4 UNDERWATER COMMUNICATION UNIT (ALPHA PRO 2.0)
4.5 UNDERWATER WIDE ANGLE AHD CAMERA
5 - ASSEMBLYING THE THE UNDERWATER COMM. UNIT AP2.0
6 - POSSIBLE AUDIO INTERACTIONS
7 - ASSEMBLYING THE CAMERA
8 - UNDERWATER CABLES SET-UP
9 - TEST THE UNDERWATER AND SURFACE COMM. UNIT
10 - START/STOP RECORDING
11 - ACCESS PLAYBACK
12 - EXPORT FILES ON EXTERNAL DRIVE
13 - DELETE ALL FILES ON GAMMA HD
14 - DELETE ALL FILES ON EXTERNAL DRIVE
15 - HDMI CABLE CONNECTION
16 - DIVER 2 TO COMPUTER CALL MODE
17 - USB LIVE CABLE AND AUDIO OUT CABLE: “BROAD. MODE”
18 - USEFUL SETTING OPTIONS TO KNOW
19 - TROUBLESHOOTING
20 - MAINTENANCE, CLEANING AND STORAGE
21 - WARRANTY
TABLE OF CONTENTS
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GAMMA ALPHA HD rel. 1.0 3
#UNDERWATERNATURALLY
For more than 75 years, OCEAN REEF has been involved in the underwater
diving industry. We have contributed much to this industry, from ns and
snorkels to the most modern systems of underwater communication. Through
the spirit of intrepid pioneers, brilliant inventors, passionate divers, and dynamic
entrepreneurs, OCEAN REEF has been able to turn dreams into reality in the
underwater world.
1 - INTRODUCTION
The Manufacturer has carefully worded and edited this owner’s manual.
However, in no event the Manufacturer will be responsible for any damage
caused by the incorrect interpretation of its content, nor due to any misprints
and/or incompleteness in the text.
The Manufacturer will not accept liabilities for any damage caused by:
• Insufcient, incorrect and improper maintenance, failing to comply with the
manual’s recommendations
• Absence of periodic tests and checks
• Incorrect and improper use
• Failing to comply with guidelines included in the owner’s manual
• Alterations and/or modications of the Vesper
If any of the above were to occur, considering these actions are potentially
dangerous to the health and life of the users, the manufacturer is released of
any responsibility and the warranty is void.
The Manufacturer is an ISO 9001:2015 certied company (https://diving.
oceanreefgroup.com/support/#ISO_CC).
If you lose this manual or if you should require more copies, you can
download it at diving.oceanreefgroup.com/support/ or contact the
Manufacturer: Mestel Safety SRL, Via Arvigo 2, 16010 Sant’Olcese
(GE), IT. Phone: [phone]. E-mail: infoitaly@oceanreefgroup.
com. Website: diving.oceanreefgroup.com

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A WARNING indicates a procedure or situation that, if not avoided, could result in
serious injury or death to the user.
A CAUTION indicates any situation or technique that could cause damage to the
product, and could subsequently result in injury to the user.
A NOTE is used to emphasize important points, tips, and reminders.
WARNINGS, CAUTIONS AND NOTES
Pay special attention to information provided in warnings, cautions, and notes that are
accompanied by these symbols:
2 - GENERAL WARNINGS / OWNER’S RESPONSIBILITIES
While this is a product of high quality, the user is not exempt from problems
connected with the incorrect use of the product or failure to follow the rules of
safe diving.
If the instructions provided in the manual are unclear or difcult to understand, please contact
OCEAN REEF at [e-mail] before using the equipment or attempting any
repairs.
IMPORTANT
The content of this manual is based upon the latest information available at the time of print.
OCEAN REEF reserves the right to modify any products, processes and manufacturing techniques
at any time. It is the technicians’ responsibility to acquire the latest information and parts from
OCEAN REEF for service and repairs to be performed.
Carefully read this instruction manual before use, and keep it for future reference.
In order to maintain the warranty, service and routine, maintenance of the products
must be performed by the end user as indicated by OCEAN REEF and described in
chapter - MAINTENANCE, CLEANING AND STORAGE.
For details, contact an authorized OCEAN REEF dealer at: https://diving.
oceanreefgroup.com/shop-dealers/
OCEAN REEF refuses all responsibility for damages caused by non-compliance with
the instructions contained in this manual. These instructions do not extend the warranty
or the responsibilities stated by OCEAN REEF terms of sales and delivery.
Before using the GAMMA ALPHA HD the user must ensure that the product has been
properly inspected and maintained. (See Chapter 20 Maintenance, Cleaning and
Storage).
DO NOT USE the unit if it is overheating, if it is leaking battery uid, if water has leaked
the unit, if there is smoke coming from the unit or if any part is broken.
Do not modify or alter in any way the GAMMA ALPHA HD

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#UNDERWATERNATURALLY
3 - REMINDERS AND TIPS FOR USE
Before diving, check the surface unit, mouse and remote control battery.
This product should not be exposed to chemical products such as sunscreen
or insect repellents as some components may melt or damage plastics.
Do not allow it to fall or be knocked around.
When storing, be mindful of open ports - failing to place the caps well can
result in screen damages.
When shipping, make sure you protect the unit by adding some protective
layer between the screen and the rest of the unit. soft, thin foam will help.
Talking and listening while underwater requires practice. With experience,
divers will become more procient in the use of the communications system.
Do not dismantle or repair the communication unit by yourself.
GAMMA ALPHA HD monitor, like all displays, need to be handled with care
to prevent damage to the LCD liquid crystals, prevent from getting hits and in
general handle with care during use and transport.
Before charging, please make sure the charging port is dry.
Charge in a safe, dry place.
When not in use or at the end of each use, make sure that the surface unit
(video and audio parts) has been turned off.
It is not a touch screen!
Make sure there is no dirt, debris or water in any part of the unit, especially
in the
rubber pin connector . If any dirt, debris or water is found, remove it.
Product should be stored in shade, dry and cool location.
Do not expose to extreme low and high temperatures.
Do not leave the product under direct sunlight.
Operating temperature: 0°C (32°F) and +40°C (104°F)
Use the original charger only.
It is your responsibility solely to assure the charger works properly.

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4 - PACKAGE CONTENTS
1 - SURFACE UNIT
W/MIC & CHARGER,
REMOTE CONTROL AND MOUSE
3 - PROFESSIONAL VIDEO
50 M. CABLE
Can be ordered separately /
custom length
3 - UW UNIT 2.0
Can be ordered separately /
custom length
4 - CAMERA
Can be ordered separately /
custom length
2 - PROFESSIONAL AUDIO
50 M. CABLE
Can be ordered separately /
custom length
INCLUDES:
REMOTE CONTROL MOUSE CHARGER MICROPHONE

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#UNDERWATERNATURALLY
The GAMMA ALPHA HD is a hardwired, full-duplex underwater audio and video communication
system for conversations between the surface and one or two divers.
With powered volume for both diver and surface.
Moreover, the volume of the underwater comm. unit can be adjusted from the surface unit to
allow the divers to have the best comfort during the dive.
With regards to the video, the installed 13” full HD color monitor displays the video feed
coming from the UW camera of diver 1 or diver 2.
This communication unit is specically designed to meet the needs of professional and
commercial divers that cannot compromise on a full duplex, hands free, clear audio/video
communication system.
The underwater comm. unit can be sold separately, and customized for use with some other
brand surface units, but is designed to be used specically with the OCEAN REEF hardwire
surface unit (GAMMA ALPHA - ALPHA PRO X-DIVERS).
The range depends on cable length.
(cable length customizable upon request - up to 200 metres /600ft)
Speaker and microphone as featured in all comm. units, but what looks like a push to talk
button is actually a recall button.
• 13” full HD backlit, anti-reective screen.
• AHD 1080p wide angle Camera (120°)
• Possibility to split screen both camera for contemporary viewing.
• Digital audio/video out (HDMI).
• PC/Mac connection USB-A (not included) Plug & Play.
• Internal recording devices: programmable DVR with 320GB expandable to 1TB recording
both audio and video.
• Backup recording: digital audio+video via USB-A (pen drive or HDD not inlcuded).
• 12V rechargeable battery
• Audio/video recall
• Stand-by autonomy: 24h.
• Recharge total max time: 2h45m
• Battery duration 1video 1 audio 50m : 5h20m
• Battery duration 1video 1 audio 200m: 5h
• Battery duration 2video 2 audio 200m: 4h30m
Scan the QR code and
watch the video tutorial
4.1 SURFACE UNIT

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Surface unit, hardwired, full duplex underwater communication. It has the following features:
AUDIO VIDEO
1. 2 ports for 2 communication cables -
Gamma Alpha can receive audio from two
divers)
2. External power & audio out port (audio out
cable optional)
3. Microphone
4. Switch for communication between surface
& diver 1, surface & diver 2, surface & diver
1 & diver 2 (cross talk)
5. Headphone port (headset optional)
6. On/Off and speaker volume adjustment
switch
7. Incorporated Speaker
8. Battery level indication
9. Underwater comm unit. volume adjustment
(for both divers)
1. 2 ports for 2 video cables - Gamma
Alpha can receive video from two divers)
2. HDMI cable port
3. Video out / USB Live port
4. USB Backup port
5. Video power ON/OFF
1
3 4 5 6
1234
5
2
7
8
9
MOUSE PAD
The serial number on the Surface unit is located on the top inside cover of the
case.
SURFACE UNIT GLOSSARY

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#UNDERWATERNATURALLY
Professional surface/diver cable
(50meters -165 ft long)
(if sold separately code OR033134)
MOUSE AND REMOTE CONTROL
4.2 PROFESSIONAL SURFACE/DIVER AUDIO CABLE
6 pin cable/wire with yellow rope exterior.
The cable’s diameter is 10mm with a resistance of
more than 4000 Newtons.
The cable includes waterproof rubber 6 pin
connector at the diver side and DIN metal
connector on the surface side.
The Professional cable is also available at any
length on request (
up to 200 metres) .
As we will explain in the instructions of this manual, most
of the operations in the GAMMA ALPHA HD can be
performed with the mouse (as for a simple laptop/pc).
Make sure the mouse is charged before using it and that
it has been switched on (in the back of the mouse).
Use the designed space on the surface unit panel to get
the best response from your mouse.
The monitor’s remote control is also useful for calibrating
and setting the light/color and audio playback.
4000 N is the tear up strength, audio signal may be lost earlier!
It is important to pay attention that the cable does not get stuck on the boat or on
the seaoor. This is to retrieve an unconscious diver.
It is also very important to keep the cable slightly buoyant, by attaching a small
buoy or oating device to the cable a few feet away from the underwater comm.
unit. - OCEAN REEF cable oaters available as an accessory.
It is a good idea to connect the cable with a hook to the BC, avoiding any traction
between the surface and the underwater comm. unit..
OCEAN REEF cable eeter is avaiable as an optional.
During the dive the surface operator must slowly feed the cable out to the
underwater diver as needed, while keeping voice contact. It is not advised to
simply throw the cable into the water. The same procedure should be used when
the dive is completed and the cable has to be brought on board.
75 m / 264 ft OR033166 - 100 m / 328 ft OR033167 - 150 m / 492 ft OR033168 - 200 m / 656 ft OR033169

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One surface/diver video cable
(50 meters -165 ft long)
(if sold separately code OR008575)
4.3 PROFESSIONAL SURFACE/DIVER VIDEO CABLE
4 pin cable/wire with yellow rope exterior. The cable’s
diameter is 10mm with a resistance of more than 4000
Newtons. The cable is a mini RG59 + 4x0.18mm²
cable with a polyurethane jacket to better resist to
salt water.
The cable includes waterproof rubber 4 pin connector
at the diver side and DIN metal connector on the
surface side.
The Professional cable is also available at any length
on request (
up to 200 metres) .
Do not try to connect a different kind of camera to the GAMMA-ALPHA 2010
surface unit! You will risk damage to your camera.
The video camera may be handled or connected to the right side of your
Neptune SPACE mask. The cable must be xed to the BC avoiding direct
tension.
2 cable oaters (x3) useful accessory to keep
audio/v cables oating avoiding entanglement
ALPHA PRO X DIVERS / GAMMA ALPHA bag
this bag is designed to be incredibly durable
to carry coil cables, it is bright colored and
easy to spot
Cable eeter avoid any traction between the
surface and the underwater comm. unit.
1
4
1
3
2
2
3
4
75 m / 264 ft OR008576 - 100 m / 328 ft OR008577 - 150 m / 492 ft OR008578 - 200 m / 656 ft OR008579
Floating cables option
ALSO AVAILABLE - SOLD SEPARATELY AS ACCESSORY:

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#UNDERWATERNATURALLY
1080P Bullet AHD Camera, wide angle Camera (120°),1/3” Sony CMOS
Sensor, 1080P, 2.8mm board lens, 40m/130ft water resistant housing.
Housing is:
• Diameter 3,4 cm
• Length : 12,7 cm
AHD Camera code = OR008511
Underwater comm. unit AP 2.0
(if sold separately code OR033135)
4.4 UNDERWATER COMM. UNIT. AP 2.0
4.5 UNDERWATER WIDE ANGLE AHD CAMERA
• Waterproof piezoelectric speakers (X2)
• D-Mic microphone
• Full-duplex system
• Audio recall button
• 6 pin waterproof connector
The connector between the cable and the underwater comm. unit can be
disconnected and connected again underwater
Routinely, clean the microphone contacts and check the integrity of the hydrophobic
membrane and the casing. If the microphone is ooded, it CANNOT BE recovered
and must be replaced.
Do not touch the hydrophobic membrane of the mic - as it may break with any sharp
object that may damage it.
The serial number on the underwater comm.
unit is wrapped around the mic contacts or
laser engraved on the battery compartment
lid.
The underwater comm. unit can be connected to any professional OCEAN REEF Mask
using the OCEAN REEF Extender Frame

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Assemblying the underwater comm. unit 2.0 on the Extender Frame.
Start removing from the Extender Frame both side neutrals connections, as shown in the
picture below.
Begin mounting the left (the one connected to the mic), earphone of the underwater comm. unit
2.0 securing it to the Extender Frame exactly like a neutral or an earphone support.
Bridges have L and R written on them for identication.
Finish by screwing rmly the bridges on the inside.
Be careful to insert the support in the correct position with no gap between the support and the
frame.
YES NO
5 - ASSEMBLYING THE UNDERWATER COMM. UNIT 2.0

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#UNDERWATERNATURALLY
Proceed connecting the MIC on the COMMUNICATION side port of the mask by screwing it on.
The crown around the PTT will turn until ush.
Last, connect the R earphone to the right side of the Extender Frame by having the cable
connecting the two ears passing underneath the straps into the face seal groove.
YES NO

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DIVER 2 SELECTED
Receive from Talk to
Surface Diver 1 & 2 Diver 2
Diver 1 None Diver 2 & Surface
Diver 2 Diver 1 & Surface Surface
DIVER 1&2 SELECTED
Receive from Talk to
Surface Diver 1 & 2 Diver 1 & 2
Diver 1 Diver 2 & Surface Diver 2 & Surface
Diver 2 Diver 1 & Surface Diver 1 & Surface
DIVER 1 SELECTED
Receive from Talk to
Surface Diver 1 & 2 Diver 1
Diver 1 Diver 2 & Surface Surface
Diver 2 None Diver 1 & Surface
By adding an additional surface/diver cable and underwater comm. unit, the Gamma
Alpha HD may communicate with two divers at the same time. It is also possible for the
surface to switch between each of the divers.
AUDIO DIVER MODE CHART:
6 - POSSIBLE AUDIO INTERACTIONS

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#UNDERWATERNATURALLY
7 - ASSEMBLYING THE CAMERA
To protect the camera always
add extra tape in the central part
The best way to mount the camera to your ocean reef full face mask is with the ocean reef professional
accessories mount (available separately as accessory)
OR025260 - Professional Accessories Mount
Kit R - (w/universal slide and clamping band)
Insert the camera in the clamping band
Make sure the clamping band is centered
on the camera housing Tighten clamping
band on housing with wrench or athead
screwdriver
Mount camera + universal slide on rail
system and adjust position as preferred with
the release button
Camera must be free to rotate at this stage
(When the unit will be on - adjust camera
horizon by rotating the camera using a
leveled horizontal element).
OR025270 - Professional Accessories Mount Kit
R+L (w/universal slide and clamping band)
1
2
3

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Cabling should be secured to diver BCD for
safety of the diver and to avoid direct stress
on connectors.
The intended setup is designed by adding
the OCEAN REEF cable eeters (sizes for
both single and multiple cables threading)
– available sold separately. It is highly
recommended to secure topside cables also
to avoid direct stress on connectors/topside
unit.
Set the diver 1 volume at half the
volume (also 2 if cabling diver 2 is
connected to the unit).
NOTE! – Thread the cabling in the cable
eeter before plugging in video/audio
cables!
CABLE FLEETER
ORO33148 (10-20 MM)
OR033149 (25-38 MM)
Then connect the 2 pin video and the 3 pin audio cable and check for right connection
(underwater camera and uw communication unit)
First connect video cable to video in 1 (if you need second diver audio - use port diver 2)
Then connect audio cable to diver 1 (if you need second diver audio - use port diver 2)
8 - UNDERWATER CABLES SET-UP

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#UNDERWATERNATURALLY
CABLE FLEETER
ORO33148 (10-20 MM)
OR033149 (25-38 MM)
Power on the unit required some seconds due to sync process - wait until the
complete sync and start-up has nished
9 - TEST THE UNDERWATER AND SURFACE
COMMUNICATION UNIT
Once your cable set up is done and
inserted the microphone in the MIC
input port you are ready to test the
unit.
TEST THE UNDERWATER COMM. UNIT
Hold the comm unit close to your ear - talk in the surface mic - test volume/function.
TEST THE SURFACE COMM. UNIT
Open the SAV and don the full face mask. Talking inside the mask will result in hearing
volume on the speaker, you can also adjust the volume and set as preferred
Turning on the unit trough the main
POWER ON/OFF SWITCH
Green light on the bottom right
corner of the monitor = unit ON.

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Using the included mouse right click anywhere
on the screen and select
→ record mode in the
Manual line you can select
→ diver 1 or 2 or both
and then
→ conrm to start recording.
The cassette recorder symbol (bottom left corner
of screen) conrms when the recording has started.
START RECORDING
STOP RECORDING
STOP RECORD/OVERWRITE SETTINGS
VIDEO DISPLAY OPTIONS
To stop recording: right click on the screen and
select → record mode in the Stop line you can
select → diver 1 or 2 or both and then →
conrm to stop recording.
Doing this will result in cassette recorder
symbol disappearing from bottom left corner
of screen.
Right click on the screen →main menu →
system →general →Storage Full →stop
record/overwrite → then conrm simply by
pressing the “ok” button.
NOTE! You can select how the GAMMA ALPHA HD is going to operate once the
internal storage space is all used = automatically stop recording / overwrite.
Video display options →right click on screen;
View 1 → Video in 1 or 2 you can also select
View 4 →and select split screen option to
see both videos at the same time.
10 - START/STOP RECORDING
Cassette recorder symbol

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#UNDERWATERNATURALLY
refresh button
11 - ACCESS PLAYBACK
Right click on the screen →Playback →
choose wich channel you want to access
(1/2 or ALL) click the refresh button to
display the les.
Playback audio volume can be
adjusted via included monitor
remote control.
On the right side: list of
multimedia contents and
related data for each le.
BOTTOM LEFT: PLAYBACK MENU
1 2
Remote control

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12 - EXPORT FILES ON EXTERNAL DRIVE
Insert pen drive or hard disk in the USB BACKUP
port right click on the screen →playback →
choose wich channel you want to access (1/2 or all)
→ click the refresh button to display the les list
of multimedia contents and related data for each
le → (as shown before).
Choose the les you want to save in your pen drive
→ click drive icon to proceed saving
External drive will be automatically
detected by the unit and displayed
If not → click “Detect” button
Click → “ Backup” button to save les.
Conrm the les you want to save,
simply ag/unag the les →
Choose the format in which you want to
save the le → click “start” to initiate
export
Conrm the les you want to save,
simply ag/unag the les → choose
the format in which you want to save the
le → click “start” to initiate export
External drive name
Flag/unflag files to double confirm
Flag/unflag files to confirm
Drive icon
Format options
Remain export time