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OWNER'S MANUAL
OWNER'S MANUAL
Pro
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RESPONSIBLE COMPUTER DIVING
Responsible
Since the advent of dive computers, it is a common mistake to assume that the old traditional rules of diving no longer apply,
but the truth is just the opposite. Before you dive using your ReACT Pro, keep these basic rules in mind:
Plan each dive, and dive your plan - Your ReACT Pro was not designed to make decisions for you, only to provide
you with the information you need to make responsible decisions for yourself. This begins with a dive plan that
will help you avoid a low air or decompression situation.
Do not plan any dive that exceeds your training or experience level.
Inspect your computer before every dive - If it shows any signs of damage or abnormal function, DO NOT dive with
it until it has received factory service.
Make your deepest dive first - When making repetitive dives, it is imperative to ensure that each consecutive dive
is shallower than the one before. This will allow your body's slower tissues to continue outgassing nitrogen.
Make the deepest part of your dive first, and gradually work your way to the surface using a staircase profile - The
ability to perform multilevel diving is one of the most important contributions of a dive computer, and you should
take advantage of it. It will increase your bottom time and at the same time decrease your risk of decompression
sickness.
Ascend slowly by following an ascent line whenever possible, or by ascending diagonally toward the surface - Watch
the Ascent Rate Indicator closely while you ascend, and keep it in the green zone as much as possible.
A Safety Stop of 3 minutes or more is recognized as a prudent action to reduce the probability of bubble forma-
tion in divers.
Responsible
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ReACT Pro
The following symbols are used throughout this manual to bring your attention to situations that require special consideration. Be sure to read and follow all instructions carefully.
A WARNING is used before a procedure that will result in serious injury or death if the procedure
is not followed carefully.
A CAUTION is used before a maintenance technique that will result in damage to parts if that
technique is not followed carefully.
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A NOTE is used to emphasize an important maintenance technique.
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WARNINGS:
The ReACT Pro is intended for use by recreational divers who have successfully completed a nationally
recognized course in scuba diving, and diving with enriched nitrogen-oxygen (nitrox) breathing gas
mixtures.
It is intended only for no decompression diving, NOT intentional decompression diving.
It must not be used by untrained persons who may not have knowledge of the potential risks and haz-
ards of scuba diving, and diving with enriched nitrogen-oxygen (nitrox) mixtures.
You must obtain scuba certification, and certification in diving with enriched nitrogen-oxygen mixtures
(nitrox) before using the ReACT Pro if you have not already done so.
It is NOT for use by military and commercial divers.
It should NOT be utilized for any competitive, or repetitive square wave or decompression diving, as it is
intended solely for recreational use and no decompression multilevel diving.
As with all underwater life support equipment, improper use or misuse of this product can cause seri-
ous injury or death.
Never participate in sharing or swapping of a dive computer.
Conduct your dives in such a manner so as to insure that you continuously check the computer's
proper function.
Read and understand this owners manual completely before diving with the ReACT Pro.
If you do not fully understand how to use this dive computer, or if you have any questions, you should
seek instruction in its use from your authorized Genesis dealer before you utilize this product.
Never participate in sharing or swapping of a dive computer. Doing so may result in injury or death.
The ReACT Pro provides information based upon a divers personal dive profile, and therefore must not
be shared between divers. You should never, under any circumstances, swap your computer with an-
other unit between dives, or share your computer with another diver underwater.
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ReACT Pro
LIMITED TWO-YEAR WARRANTY
Genesis Scuba guarantees, to the original purchaser only, that the ReACT Pro will be free of defects in materials and/or craftsmanship under normal recreational
multilevel scuba use for two years from date of purchase, provided proper care and annual service are performed as described within this owners guide. Should your
ReACT Pro prove to be defective for any reason (other than those listed in the limitations section below) it will be repaired or replaced (at Genesis Scuba's discretion)
free of charge excluding shipping and handling charges.
This warranty will be considered void if the registration card is not filled out completely at the time of purchase and mailed to Genesis Scuba within 30 days of purchase, and/or if the annual inspection is not done according to this owners manual. This warranty is non-transferrable and applies to the original purchaser only. All
correspondence concerning this warranty must be accompanied by a copy of the original sales receipt and a copy of the owners portion of the warranty registration
card including the annual inspection record.
Once each year you must return the ReACT Pro to an Authorized Genesis Dealer within 30 days of the original purchase date anniversary to keep the
two year limited warranty in force. Annual inspection includes verification of depth accuracy and proper general function. Labor charges for the annual inspec-
tion are not covered by the warranty. You must provide a copy of the original sales receipt and a copy of the owners portion of the warranty registration card including the annual service record to obtain warranty service.
Statement of Limitations - General:
Warranty does not cover damage from accident, abuse, battery leakage, tampering, lack of proper care and maintenance and/or proper annual servicing, or improper use of the ReACT Pro. Modifications or repair by anyone other than a Genesis Sales and Service Center authorized to service the ReACT Pro
will void the warranty. Genesis Scuba will not be responsible for recovery or replacement of the product in the event of loss or theft. Genesis Scuba, its distributors,
and retailers make no warranties, either expressed or implied, with respect to this product or its owners manual except those stated in the preceding paragraphs. In
consideration of the sale of the ReACT Pro to you, you agree and understand that in no event will Genesis Scuba, its distributors or retailers, be held liable for any personal injuries resulting from its operation, or for any other damages whether direct, indirect, incidental, or consequential even if Genesis
Scuba is advised of such damages.
Some states do not allow the exclusion or limitation of implied warranties or liabilities for incidental or consequential damages, so the above limitation may not apply
to you.
Warranty does not extend to plastic gauge face, o-rings, batteries, or damage due to accident, abuse, modification, or tampering.
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COPYRIGHT NOTICE
This owners manual is copyrighted, all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine readable form without prior consent in writing from Genesis Scuba / 2002 Design.
ReACT Pro Owner's Manual, Doc. No. 12-2371
TRADEMARK NOTICE
Genesis Scuba, Genesis, and the Genesis Scuba logo are registered trademarks of Genesis Scuba, ReACT Pro and Hydroglow are also trademarks of Genesis
Scuba. Al l rights are reserved.
PATENT NOTICE
U.S. Patents have been issued, or applied for, to protect the following design features:
Data Sensing and Processing Device (U.S. Patent no. 4,882,678), Dive Time Remaining (U.S. Patent no. 4,586,136), and Ascent Rate Indicator (U.S. Patent no.
5,156,055).
DECOMPRESSION MODEL
The programs within the ReACT Pro simulate the absorption of nitrogen into the body by using a mathematical model. This model is merely a way to apply a limited set of data to a large range of experiences. The ReACT Pro dive computer model is based upon the latest research and experiments in decompression theory.
Still, using the ReACT Pro, just as using the U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sickness, i.e.
the bends. Every divers physiology is different, and can even vary from day to day. No machine can predict how your body will react to a particular dive pro-
file.
© 2002 Design 2002
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ReACT Pro
CONTENTS
FEATURES and DISPLAYS ......................................................................................................................... 11
Introduction .................................................................................................................................................... 12
Control Buttons .............................................................................................................................................. 13
Intuitive Displays ............................................................................................................................................ 14
Bar Graphs ................................................................................................................................................ 15
Ascent Rate Indicator ............................................................................................................................. 15
Nitrogen Bar Graph ................................................................................................................................ 16
Depth Displays .......................................................................................................................................... 17
Date Display .............................................................................................................................................. 17
Time Displays ............................................................................................................................................ 18
Temperature Display .................................................................................................................................. 19
Backlight Feature ........................................................................................................................................... 19
Operating Temperature .................................................................................................................................. 19
Audible Alarm ................................................................................................................................................ 20
ACTIVATION and SETUP ............................................................................................................................ 21
Push Button Activation ................................................................................................................................... 22
Water Contact Activation ................................................................................................................................ 23
Surface Mode ................................................................................................................................................ 24
Entering Settings ........................................................................................................................................... 24
To Set FO2 (50%) Default .......................................................................................................................... 25
To Set Units of Measure ............................................................................................................................. 26
To Set Date/Time ....................................................................................................................................... 26
To Set Dive Profile Data Sampling Rate ..................................................................................................... 28
To Set Alarms ............................................................................................................................................ 28
To Set Wet Activation ................................................................................................................................. 29
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CONTENTS (CONTINUED)
Reset (Clear) ................................................................................................................................................. 30
PRE DIVE and DIVE MODES ....................................................................................................................... 31
Pre Dive Modes ............................................................................................................................................. 32
FO2 Mode.................................................................................................................................................. 32
FO2 Set for Use with Air ........................................................................................................................... 33
FO2 for Use with Nitrox ............................................................................................................................ 33
FO2 50% Default ON............................................................................................................................. 33
FO2 50% Default OFF ........................................................................................................................... 34
Setting FO2 for Use with Nitrox .............................................................................................................. 34
Plan Mode .................................................................................................................................................. 35
No Decompression Dive Mode....................................................................................................................... 36
No Decompression Dive Mode Safety Stop ............................................................................................... 38
POST DIVE MODES ..................................................................................................................................... 39
Post Dive Surface Mode ................................................................................................................................ 40
Transition Period ........................................................................................................................................ 40
After the Transition Period (the First 2 Hours) ............................................................................................41
To view Temperature and O2SAT ........................................................................................................... 41
To access FO2 Mode ............................................................................................................................. 41
To access Plan Mode ............................................................................................................................. 42
To access Fly/Desat Mode ..................................................................................................................... 42
Log Mode ................................................................................................................................................... 43
After the First 2 Hours ................................................................................................................................ 45
External Access Mode ............................................................................................................................... 46
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CONTENTS (CONTINUED)
SPECIAL SITUATIONS ................................................................................................................................ 47
Emergency Decompression ........................................................................................................................... 48
Nitrogen Bar Graph .................................................................................................................................... 48
Decompression Dive Mode ........................................................................................................................ 49
Managing Decompression Stops................................................................................................................ 51
Violation Modes ............................................................................................................................................. 52
Conditional Violation Mode ......................................................................................................................... 52
Delayed Violation Mode .............................................................................................................................. 53
Im mediate Violation Mode and Gauge Mode .............................................................................................. 55
Permanent Violation ................................................................................................................................... 56
Oxygen Exposure .......................................................................................................................................... 57
Partial Pressure of Oxygen ........................................................................................................................ 57
High PO2 Dive Mode ............................................................................................................................. 57
Oxygen Accumulation ................................................................................................................................ 58
High O2 Saturation ................................................................................................................................ 59
Unexpected Loss of Displayed Information .................................................................................................... 60
Special Warnings and Additional Safety Information....................................................................................... 61
CARE, INSPECTION, and SERVICE ........................................................................................................... 63
Care and Cleaning ......................................................................................................................................... 64
Annual Inspections and Service ..................................................................................................................... 65
Battery Life .................................................................................................................................................... 66
Low Battery Condition .................................................................................................................................... 66
Battery Replacement...................................................................................................................................... 67
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CONTENTS (CONTINUED)
REFERENCE ................................................................................................................................................ 73
Dive Time Remaining ..................................................................................................................................... 74
Altitude Diving ................................................................................................................................................ 75
Flying After Diving .......................................................................................................................................... 76
Nitrox Diving .................................................................................................................................................. 77
Multiple Tissue Tracking ................................................................................................................................ 78
Repetitive Decompression Diving ................................................................................................................... 79
No Decompression Limits .............................................................................................................................. 80
Specifications ................................................................................................................................................ 81
Glossary ........................................................................................................................................................ 84
Inspection / Service Record ........................................................................................................................... 86
Full LCD Display ............................................................................................................................................ 87
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FEATURES
and
DISPLAYS
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INTRODUCTION
Congratulations on your recent purchase of the Genesis ReACT Pro !
Your ReACT Pro presents the information that you need before, during, and after your air (or nitrox) dives using an intuitive
combination of easy to read displays and unique identification icons.
Tissue loading of nitrogen and ascent rate are presented as segmented bar graphs alongside color coded reference indicators
that bring quick focus to these important status displays.
As you progress through this instructional guide, you will become familiar with all of the unique functions and features available and see examples of the displays that you could expect to see in the various operational modes. Although it will require
an initial investment of time to become acquainted with the various icons and symbols, youll soon agree that your ReACT
Pro is easy to understand and use.
Due to the importance that you understand the ReACT Pro thoroughly prior to using it, information will be expanded upon
and some refreshed as you proceed. Relax and read through the complete owner's manual.
It is extremely important that you:
Read this owner's manual in sequence and understand it completely before attempting to use the ReACT Pro.
Check the ReACT Pro frequently during your dive.
You must also be a trained diver, certified by a recognized training agency in SCUBA diving.
Prior to using the oxygen related features of the ReACT Pro, you must also be trained and certified for diving
with enriched nitrogen-oxygen (nitrox) breathing gas mixtures by a recognized training agency.
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ReACT Pro
Remember that the rules you learned in your basic SCUBA certification course still apply to the diving you will do while using a dive computer - some will become even more important. Technology is no substitute for common sense, and a dive
computer only provides the person using it with data, not the knowledge to use it.
WARNING: Inspect your ReACT Pro prior to every dive, checking for any signs of the entrance of
moisture, damage to the buttons, or damage to the LCD display. If these or other signs of damage
are found, return the unit to an Authorized Genesis Scuba Dealer. DO NOT attempt to use it until it
has received factory service.
CONTROL BUTTONS
The ReACT Pro is a unique dive computer with interactive controls that allow you to select various display options and access
specific information when you choose to see it. These are referred to as the LEFT (L) and RIGHT (R) buttons (Fig. 1).
The control buttons can be pressed repeatedly, or held in to scroll and continue as you set or access different display modes.
On the surface the control buttons are used to activate the ReACT Pro; activate the backlight; access the Date/Time, Fly, Plan, and Log modes; set variables such as FO2, Date/Time, etc.
The buttons can also be used to access an External Access mode to download (copy) dive data to
a unique PC log/profile program.
Underwater, the buttons are used to activate the backlight and view Alternate displays of information.
L
Fig. 1 - Control Buttons
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INTUITIVE DISPLAYS
FT
PO2
The ReACT Pro uses Genesis Scuba's unique Dive Profile Diagram (Fig. 2a) and easy to understand symbols, displaying information where you would expect it to be when looking at a log profile.
When you enter Special Situations, such as Decompression, High PO2, High O2, and Out of
Range modes, an UP Arrow symbol (Fig. 2b) will appear in the middle portion of the display as a
warning that a controlled ascent is required.
It is imperative that you understand the formats, ranges, and values of the information presented
by the ReACT Pro's numeric and graphic displays to avoid any possible misunderstanding that
could result in error.
b
NITROX
FT
Fig. 2 - Profile & Arrow
Symbols
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NOTE: Throughout this owner's manual reference is made to the term
N
''breathing gas'. The rationale being that the ReACT Pro can be used for
'air' dives or 'nitrox' dives. For clarity these terms are defined as -
Breathing Gas - the gaseous mixture breathed during a dive.
PO2
Air - a breathing gas that contains approximately 21% oxygen and 79%
nitrogen (nature's common nitrogen-oxygen mixture).
Nitrox - a nitrogen-oxygen breathing gas that contains a higher fraction of
oxygen (22 to 50%) than air.
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BAR GRAPHS
Two segmented bar graphs appear around the perimeter of the screen next to green, yellow, and
red color coded portions of the peripheral decal that denote normal, caution, and danger zones,
respectively.
When underwater, you can quickly focus on the bar graphs to make sure that they are in the
green and you are not getting too close to the no decompression limit or ascending too fast.
Ascent Rate Indicator (ARI)
The Ascent Rate Indicator located along the bottom of the LCD (Fig. 3a) is provided to help you
avoid excessive Ascent Rates by providing a visual representation of ascent speed, rather than
just showing that you are ascending too fast.
The LCD displays up to 5 segments that may be considered an Ascent Rate speedometer. Green
is a 'normal' rate, yellow a 'caution' rate, and red is 'Too Fast'. The segments of the Ascent Rate
Indicator represent 2 sets of speeds which change at a reference depth of 60 feet (18 meters).
Refer to the chart at the right for segment values.
When your ascent rate exceeds the maximum recommended rate of 60 feet (18 meters) per
minute when deeper than 60 feet (18 meters) or 30 feet (9 meters) per minute when shallower
than 60 feet (18 meters), the bar graph segments will enter the red 'Too Fast' zone at which time
the Audible Alarm will sound and all 5 segments will flash once per second until your ascent
speed is slowed.
ReACT Pro
Deeper than 60 feet (18 m)
Segments Ascent Rate =
Displayed FPM MPM
0 0-20 0 - 6
1 21-30 6.5-9
2 31-40 9.5-12
3 41-50 12.5-15
4 51-60 15.5-18
5 >60 >18
60 feet (18 m) & Shallower
Segments Ascent Rate =
Displayed FPM MPM
0 0-10 0 - 3
1 11-15 3.5-4.5
2 16-20 5-6
3 21-25 6.5-7.5
4 26-30 8-9
5 >30 >9
Ascent Rate Indicator
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Fig. 3 - ARI
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Fig. 4 - Nitrogen BG
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Nitrogen Bar Graph (NiBG)
The Nitrogen Bar Graph located around most of the perimeter of the LCD (Fig. 4a) represents
tissue loading of nitrogen, showing your relative no decompression or decompression status. As
your depth and elapsed dive time (BT) increase, segments will add to the graph, and as you ascend to shallower depths, the bar graph will begin to recede, indicating that additional no decompression time is allowed for multilevel diving.
The Nitrogen Bar Graph also assists you with managing decompression by filling red 'ceiling
stop required' segments which are described in more detail in the Special Situations section of
this manual.
The Nitrogen Bar Graph monitors 12 different nitrogen compartments simultaneously and displays the one that is in control of your dive at that time. It is divided into a green No Decompression zone, a yellow Caution zone, and a red DECO (decompression) zone.
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The yellow Caution zone gives a visual representation of just how close you are to the no decompression limit which allows you to make a decision regarding safety stop duration or necessity.
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The red DECO zone alerts you to focus your attention on the current required DECO stop 'ceil-
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ing' depth indicated by the bar graph segment. When stop depths of 50 FT (15 M) and 60 FT (18
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M) are required, all red segments are displayed and the required stop depth (50 or 60, or 15 or
18) is displayed numerically.
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DEPTH DISPLAYS
FT
AM
The Depth display indicates Depths from 0 to 330 feet (99.5 meters) in 1 foot (.5 meter) increments.
ReACT Pro
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During a dive, Current Depth is displayed continuously on the Main display with the symbol FT
(or M) below it (Fig. 5a).
When the LEFT button is pressed 1 time to view the first Alternate display, Maximum Depth
and the symbols MAX and FT (or M) are displayed in place of Current Depth.
In the event that you descend deeper than 330 feet (99.5 meters), the Depth display will show
three dashes (- - -) to indicate that you have gone 'out of range'. This is described in more detail
in the Special Situations section of this manual.
During a Decompression Dive, required Ceiling Stop Depths of 50 FT (15 M) and 60 FT (18 M)
are displayed in the lower/right portion of the LCD. This is described in more detail in the Special Situations section of this manual.
DATE DISPLAY
The Date is displayed when the ReACT Pro is in Surface Mode (Fig. 6a/b). It is not displayed in
any other modes on the surface or during Dive Modes.
AIR
FT
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Fig. 5 - Depth (95 FT)
AIR
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Fig. 6 - Date (June 13)
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TAT
OTL
BT
STOP
AM
PM
SAT
Fig. 8 - Time Displays
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TIME DISPLAYS
The ReACT Pro has three time displays.
The largest display is the Main Time display (Fig. 8 - top row of digits). Indicated are theoretical No Decompression Limit (NDL), Oxygen Tolerance Limit (OTL), Elapsed Dive Time (BT),
Total Ascent Time (TAT), or Surface Time with the Wave symbol below it, depending on the operating mode that the ReACT Pro is in.
A second time display (Fig. 8 - middle row of digits) indicates Decompression Stop Time required at the stop depth indicated, or Time to Desaturate after a dive, depending on the operating
mode that the unit is in.
The third time display (Fig. 8 - bottom row of digits) indicates Time of Day, or Time to Fly after
a dive, depending on the operating mode that the unit is in.
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OTL
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STOP
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PM
Each display is described in more detail in subsequent sections of this manual.
Time displays are shown in hour:minute format (i.e., 1:09 represents one hour and nine minutes,
not 109 minutes!). The colon that separates hours and minutes blinks once per second when the
display is indicating real time such as Surface Time, Bottom Time, and Time of Day. NDL,
OTL, TAT, Deco Stop Time, Time to Fly, and Time to Desaturate are calculated projections of
time and use a solid (non-blinking) colon to indicate that they are counting down.
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TEMPERATURE DISPLAY
While in the Surface Mode, Ambient Temperature (Fig. 9a) will be displayed for 10 seconds in
place of Surface Time when the LEFT button is pressed. During a dive, Water Temperature is
displayed when the LEFT button is pressed 2 times to view the Second Alternate display.
If the Temperature exceeds a value of '99', two dashes ( - - ) will be displayed on the screen until
the unit's temperature decreases to '99'.
While Temperature is displayed, access can be gained to a Reset feature described later.
BACKLIGHT FEATURE
On the surface, while in Surface Mode or Fly Mode, the ReACT's Hydroglow Backlight will illuminate the display when the RIGHT button is pressed and released. If the button is kept depressed, the Backlight will not come on.
During a dive, the Backlight will illuminate the display when the RIGHT button is pressed. The
display will remain illuminated as long as the Button is pressed, plus 10 seconds after being released.
OPERATING TEMPERATURE
The ReACT Pro will operate in water temperatures from 28° to 95° F (-2 to 35 °C) and out of the
water from 20° to 140°F (-6 to 60 °C). At extremely low temperatures, the LCD may become
sluggish, but this will not affect it's accuracy. If stored or transported in extremely low temperature areas (below freezing), warm the module and battery with body heat before diving.
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AUDIBLE ALARM
When Cautionary situations activate the Alarm, the ReACT Pro will emit a beeping sound as a warning. When the situation
corrected, the Alarm will cease. It will sound again if the same condition returns, or another Alarm condition occurs.
A single BEEP is emitted -
after the unit performs a Diagnostic check upon push button activation.
upon ascending to the No Deco Safety Stop depth of 20 feet (6 meters).
One BEEP per second is emitted for 10 seconds-
upon entry into Decompression Mode.
when PO2 reaches 1.40 ATA.
when PO2 reaches 1.60 ATA.
upon Ascending above a Required Decompression Stop Depth.
upon Descending deeper than 330 feet (99.5 meters).
when Ascent rate exceeds 60 feet (18 meters) per minute when depth is greater than 60 feet (18 meters), or 30 feet (9
meters) per minute at 30 feet (9 meters) or shallower. The Beeping will continue until the Ascent speed is reduced.
when O2 Accumulation becomes equal to or greater than allowable per dive limit, or limit for a 24 hour period.
when the Decompression obligation requires a Stop Depth greater than 60 feet (18 meters).
A single long BEEP is emitted for 3 seconds -
when above a required Decompression Stop Depth for more than 5 minutes.
when the Decompression obligation requires a Stop Depth greater than 70 feet (21 meters).
upon being on the surface for 5 minutes after a Delayed Violation (described in the Special Situations section).
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ReACT Pro
ACTIVATION
and
SETUP
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TAT
OTL
BT
MAX
FT
STOP
AM
PM
PO2
SAT
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AIR
NITROX
M FT
MAX
Fig. 10 - Diagnostic Mode
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Fig. 11 - Serial Number
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STOP
PO2
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ACTIVATION
PUSH BUTTON (PRIMARY METHOD)
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To activate the ReACT Pro, press the RIGHT button once and release. It will immediately enter
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Diagnostic Mode, displaying all 8s (Fig. 10), followed by dashes, and a countdown from 9
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ments in their top/left positions.
While conducting diagnostics, the display is illuminated by the backlight as it checks its display
functions to ensure that everything is working properly and that battery voltage is sufficient to
complete a full day of diving. If there is not enough battery voltage, the unit will either deactivate itself or would not have activated at all.
WARNING: If the Low Battery symbol (Fig. 10a) is still displayed following
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diagnostics, Genesis Scuba strongly recommends that you DO NOT dive
until the battery is replaced.
When the button is held depressed as the Diagnostic countdown reaches 00, a Serial Number
screen appears displaying the units firmware code Revision Number and Serial Number for as
long as the button is held depressed (Fig. 11). Upon releasing the button, the unit shuts Off.
The unit will automatically turn OFF 2 hours after activation if no dive is made. If the water activation contacts are still bridged (the unit is wet), it automatically reactivates.
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WATER CONTACT ACTIVATION (BACKUP METHOD)
NOTE: Water contact will only activate the unit if the Wet Activation
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feature is Set ON (a user setting).
The ReACT Pro has 2 contacts that cause it to activate when the space between the contacts is
bridged by a conductive material (e.g., water contact) and enter Surface Mode.
If the Wet Activation feature is Set On and the water contacts are bridged when the unit shuts
Off, it will automatically reactivate.
WARNING: Never attempt to activate the ReACT Pro underwater. This
may result in inaccurate depth and no-decompression time displays. If the
unit is activated when deeper than 4 feet (1 meter) underwater, or at
elevations higher than 14,000 feet (4,267 meters), it will perform a
diagnostic check followed by immediate shutdown.
Upon activation and every 30 minutes while on the surface, the ReACT Pro will also check the
ambient barometric pressure, and calibrate its present depth as zero. At elevations of 2,000 feet
(610 m) or higher, it will recalibrate itself to provide adjusted No Decompression and O2 limits.
WARNING: If any display or function varies from the information
presented here, return the ReACT Pro to your Authorized Genesis Scuba
Dealer for inspection.
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SURFACE MODE
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Surface Mode, identified by the Surface Wave symbol (Fig. 12a), immediately follows Diagnostic
Mode after activation.
Information displayed includes Surface Time (Fig. 12b) with colon flashing, Date (Fig. 12c/d)
and Time (Fig. 12e) with Am or Pm symbol (if set for 12 Hour Format), and the AIR (or
NITROX) symbol (Fig. 12f).
ENTERING SETTINGS
The Set Mode allows you to set, or verify, FO2 50% Default (On or Off), Units of Measure (Imperial or Metric), 12/24 Hour Format, Date/Time, Alarms On/Off, Wet Contact Activation On/
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Off, and Dive Profile Sampling Rate (for download data).
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Fig. 12 - Surface Mode
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WARNING: FO2 and Date/Time must be reset when the Battery is removed
for more than 8 seconds .
While in the Set Mode, the LEFT button is used to advance through the available settings, and
the RIGHT button is used to select the set point from those available.
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SET MODE ACCESS
To access the Set Mode while in the Surface Mode, press BOTH buttons simultaneously
and release them when the Set FO2 Default screen appears with the set point (ON or OFF)
flashing.
To bypass a setting that you do not wish to change, press the LEFT button to move to the
next setting in the Sequence (Fig. 13).
While in Set Mode, operation will automatically revert to Surface Mode if there is no but-
ton action for a period of 2 minutes.
TO SET FO2 (50%) DEFAULT - ON/OFF
Factory set for ON, the FO2 50% Default feature can also be set OFF.
ON = FO2 Value set point reverts to 50% after dives (FO2 must be set prior to each dive)
OFF = FO2 Value set point remains at the % set until changed or shut down
press BOTH buttons while in Surface Mode, release when FO2 50 ON (or OFF) appears with
ON, or OFF, flashing (Fig. 14)
press the RIGHT button to toggle between ON and OFF
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
ReACT Pro
SURFACE MODE THEN 1 - FO2 50% DEFAULT
2 - UNITS OF MEASURE
3 - EXTERNAL ACCESS
4 - YEAR
5 - MONTH
6 - DAY
7 - HOUR FORMAT
8 - HOUR
9 - MINUTE
10 - SAMPLE RATE
11 - AUDIBLE ALARM
12 - WET ACTIVATION
Fig. 13 - Set Mode Sequence
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NITROX
Fig. 14 - Set FO2 Default
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FT
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Factory set for Imperial Units of Measure (F, FT), Units can also be set for Metric (C, M).
press BOTH buttons while in Surface Mode, release when FO2 50 ON (or OFF) appears
press the LEFT button 1 time to access Set Units
TO SET UNITS OF MEASURE
FT
F and FT (or M and M) appear flashing (Fig. 15)
press the RIGHT button to toggle between Imperial (F and FT) and Metric (C and M)
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
Fig. 15 - Set Units
Fig. 16 - Set Date
26
EXTERNAL ACCESS (EA) MODE
This mode does not have any set points or selections. It provides you access to the PC download
feature described later in the Post Dive Mode section.
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TO SET DATE/TIME
Factory set for January 1, 2002, 12:00 AM (midnight), Date/Time can be set for your locality.
press BOTH buttons while in Surface Mode, release when FO2 50 ON (or OFF) appears
press the LEFT button 3 times to access the DATE screen
(If Units of Measure are set for Metric, the Month appears to the upper/right of the Year.)
The DATE screen appears with the YEAR flashing (Fig. 16).
Hint: To bypass a display that is flashing, do not press the RIGHT button, instead press the LEFT
button to move to the next function.
Page 27
SETTING DATE/TIME
AM
When the DATE screen appears with the YEAR flashing -
ReACT Pro
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press and hold the RIGHT button until the correct YEAR appears
press the LEFT button once. The MONTH set point flashes.
press and hold the RIGHT button until the correct MONTH appears
press the LEFT button once. The DAY set point flashes.
press and hold the RIGHT button until the correct DAY appears
press the LEFT button once.
The HOUR FORMAT screen appears with the set point flashing (Fig. 17).
press and release the RIGHT button to toggle between ON and OFF
press the LEFT button once.
The TIME screen appears with the HOUR flashing (Fig. 18).
press and hold the RIGHT button until the correct HOUR appears
press the LEFT button once. The MINUTE flashes.
press and hold the RIGHT button until the correct MINUTE appears
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
Fig. 17 - Set Hour Format
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Fig. 18 - Set Time
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Fig. 19 - Set Sample Rate
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Fig. 20 - Set Alarm
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TO SET DIVE PROFILE DATA SAMPLING RATE
This setting allows you to select the rate that the ReACT Pro samples data for on board storage in
memory for subsequent download to the PC software program. It does not affect the rate that
data is sampled for operational calculations and displays.
Factory set for 30 seconds, the Sample Rate can also be set for 15 or 60 seconds .
press BOTH buttons while in Surface Mode, release when FO2 50 ON (or OFF) appears
press the LEFT button 9 times to access Set Sampling Rate
SEC and the numeric Rate appear with the Rate flashing (Fig. 19)
press the RIGHT button until the desired RATE appears
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
TO SET ALARMS - ON/OFF
Factory set for On, the Alarms can also be set for Off.
press BOTH buttons while in Surface Mode, release when FO2 50 ON (or OFF) appears
press the LEFT button 10 times to access Set Alarms
the graphic ALr appears with ON, or OFF, flashing (Fig. 20)
press the RIGHT button to toggle between ON and OFF
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
Page 29
TO SET WET ACTIVATION - ON/OFF
Factory set for On, Wet Activation can also be set for OFF.
WARNING: When set Off, the ReACT Pro must be activated by pushing the
RIGHT button prior to commencing a dive.
press BOTH buttons while in Surface Mode, release when FO2 50 ON (or OFF) appears
press the LEFT button 11 times to access Set Wet Activation
the graphic H2O appears with ON, or OFF, flashing (Fig. 21)
press the RIGHT button to toggle between ON and OFF
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
ReACT Pro
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Fig. 21 - Set Wet Activation
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Page 30
CLEAR (RESET)
The ReACT Pro is configured with a feature that allows calculations pertaining to a dive series in progress to be interrupted.
Activation of this feature will delete all data accumulated during the dive series necessary for planning a next dive and should
only be performed if the user plans to suspend diving for at least 24 hours.
This feature is present to provide institutional users of the computer a means to provide a "clean" computer to subsequent users without having to wait for the computer to complete all calculations in real time. This practice requires strict control to
ensure that the "clean" computer is not used by a diver that has been diving within the preceding 24 hours. Failure to follow
this practice could adversely affect the accuracy of subsequent calculations by failing to account for previous exposure to elevated nitrogen and oxygen partial pressures.
WARNING: Do not attempt to activate the CLEAR (Reset) function on your
computer. Proper activation of this feature requires controlled procedures
and is restricted to authorized personnel.
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WARNING: Improper activation of this feature could expose the user to
elevated risk of decompression sickness or oxygen toxicity. This is a
serious risk and could result in injury or death.
WARNING: If the CLEAR (Reset) screen appears (Fig. 22), cease all
operation of the unit's buttons and wait until Surface Mode appears on
the display (2 minutes). If the unit shuts Off completely, all calculations
for repetitive dives will be cleared in which case you must wait at least 24
Fig. 22 - Clear
hours before resuming diving activity.
30
Page 31
ReACT Pro
PRE DIVE
and
DIVE
MODES
31
Page 32
a
AM
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PRE DIVE MODES
While in the Surface Mode, press the LEFT button to view Temperature (Fig. 23).
Press the RIGHT button to activate the Hydroglow backlight.
AIR
Fig. 23 - Temperature
Set for Air Operating Mode
a
NITROX
Fig. 24 - Set for Nitrox
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32
The LEFT button is also used to access FO2, Plan, Fly, and Log Modes.
NOTE: Fly and Log modes are considered Post Dive modes and are
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described in the next section of this manual.
FO2 MODE
The ReACT Pro can be set for use either as an AIR computer or as a NITROX computer. After
activation, it will operate as an AIR computer without displaying information associated with
oxygen calculations, unless it is set for a percentage of oxygen (FO2) other than Air (e.g., a numerical value between 21 and 50 %).
If your ReACT Pro is set for use with Air as your breathing gas, the symbol AIR will be displayed (Fig. 23a) during all modes except the Set, Fly, and Gauge modes. If it is set for use with
Nitrox, the symbol NITROX will be displayed (Fig. 24a).
AM
WARNING: When set for use with Nitrox, you must verify that the FO2
setting correctly matches the Nitrox Mix being used prior to each Nitrox
dive.
Page 33
FO2 SET FOR USE WITH AIR
MAXFTFT
When FO2 is set for AIR (Fig. 25), the ReACT Pro will perform calculations the same as if FO2
were set for 21%, internally accounting for oxygen loading for any subsequent Nitrox dives.
Once a dive is made with the unit set as a NITROX computer (e.g., FO2 set for a numerical
value), the unit cannot be programmed to operate as an AIR computer until 24 hours after the
last dive. AIR will not be displayed as an option in the FO2 Set Mode. You can however set
FO2 for 21% for use with Air.
ReACT Pro
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AIR
Fig. 25 - FO2 Set For AIR
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FO2 SET FOR USE WITH NITROX
If FO2 is set at a value of 21% (Fig. 26), the unit will remain set as a 21% NITROX computer for
subsequent dives until FO2 is set to a higher value (22 to 50%), or until it automatically turns off
and is reactivated.
WARNING: When the FO2 default is set On, the FO2 value must be set for
each repetitive nitrox dive, or the value will automatically be 50 and the
dives will be calculated based on 50% O2 for oxygen calculations and 21%
O2 (79% nitrogen) for nitrogen calculations.
FO2 50% Default ON
When the FO2 50% Default feature is set ON and FO2 is set at a value of 22 to 50% to match the
nitrox mix being used for that nitrox dive, the FO2 setting after that dive will automatically default to a value of 50% (Fig. 27A).
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NITROX
MAX
Fig. 26 - FO2 Set for 21%
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C
NITROX
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Fig. 27A - FO2 Default ON
C
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Page 34
NITROX
MAXFTFT
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the FO2 Default is set On, a subsequent descent will be considered a new
dive and the FO2 value must be reentered.
WARNING: If you surface for greater than 10 minutes during a dive and
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FO2 50% Default OFF
When FO2 is set for a numerical value (Nitrox Mode) and the FO2 Default feature is set OFF
(Fig. 27B), the FO2 setting will remain fixed until another value is selected or the unit shuts Off.
Upon reactivation, the unit operates in Air Mode until changed to Nitrox Mode.
Fig. 27B - FO2 Default OFF
a
NITROX
MAX
c
Fig. 28 - FO2 Set for 32%
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34
Setting FO2 for Use with Nitrox
To set FO2 for the percentage of oxygen (FO2) in your specific Nitrox mix:
press the LEFT button 2 times while in Surface Mode (Surf > Temp > FO2)
The FO2 screen appears displaying the symbol AIR or NITROX (Fig. 28a).
b
If AIR is dislayed, press the RIGHT button to change to Nitrox Mode and scroll the FO2
set point to the Value required (Fig. 28b).
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The percentage displayed will advance 1% per second from 21 to 50%.
The Depth display simultaneously indicates the Maximum Depth (Fig. 28c) that can be
achieved for an oxygen partial pressure (PO2) of 1.60 ATA for each of the FO2 Values.
when the proper value of FO2 is displayed, release the button.
press the LEFT button to revert to Surface Mode
Page 35
PLAN MODE
MAXFTFT
OTL
MAX
FT
NOTE: Genesis Scuba strongly recommends that you access and review
N
the Plan Mode prior to every dive to help you plan your dive as required to
avoid exceeding no decompression or oxygen exposure limits.
This is especially important for repetitive dives, when the Plan Mode
indicates adjusted no decompression limits, or oxygen tolerance limits,
available for your next dive, based on any residual nitrogen and oxygen
accumulation following your last dive and surface interval.
WARNING: The Plan Mode predicts only no decompression times for
subsequent dives. Depending on cylinder size, breathing gas
consumption, and oxygen accumulation you may have less time available
than indicated because of breathing gas quantity or other limitations.
With each Depth displayed in the Plan Mode, you will see either 'predicted' no decompression
limits (NDL) based upon your previous dive profiles, if calculated to be nitrogen controlled, or
'predicted' oxygen tolerance limits (OTL) based upon either a single dive exposure or your 24
hour accumulation of oxygen, if calculated to be oxygen controlled.
When Nitrogen is in control, the symbol NDL will be displayed (Fig. 29a). When Oxygen is in
control, the symbol OTL will be displayed (Fig. 30a).
ReACT Pro
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NITROX
MAX
Fig. 29 - Nitrogen Control
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OTL
NITROX
MAX
M FT
Fig. 30 - Oxygen Control
a
a
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Page 36
FT
Depth NDL
feet (meters) hours:mins
30 (9) 4:20 (4:43)
40 (12) 2:17 (2:24)
50 (15) 1:21 (1:25)
60 (18) :57 (:59)
70 (21) :40 (:41)
80 (24) :30 (:32)
90 (27) :24 (:25)
100 (30) :19 (:20)
110 (33) :16 (:17)
120 (36) :13 (:14)
130 (39) :11 (:11)
140 (42) :09 (:09)
150 (45) :08 (:08)
160 (48) :07 (:07)
170 (51) :07 (:06)
180 (54) :06 (:06)
190 (57) :05 (:05)
No Decompression Limits
for an Air Dive
(no dive made yet)
NITROX
FT
Fig. 31 - No Deco Dive
36
No decompression times are only displayed for depths where there are at least 3 minutes of dive
time available at the depth, taking into account a descent rate of 60 feet (18 meters) per minute.
Depths greater than the maximum depth that can be achieved with a PO2 of 1.60 BAR will not
be displayed.
To access and view the Plan Mode while in Surface Mode:
press the LEFT button 3 times, while in Surface Mode (Surf > Temp > FO2 > Plan)
press and release the RIGHT button to advance through the sequence of Depths from 30 to
190 feet (9 to 57 meters) in 10 foot (3 meter) increments
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
WARNING: If the Wet Activation feature is Set OFF, the ReACT Pro must
be manually activated prior to start of a dive. The unit will not activate
automatically by immersion in water unless the Wet Activation feature is
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Set ON. Refer also to the Warning on page 72.
NO DECOMPRESSION DIVE MODE MAIN DISPLAY (FIG. 31)
The ReACT Pro will enter the No Decompression Dive Mode when you descend deeper than 5
feet (1.5 meters). This mode is identified by the Wave and Dive Profile symbols (Fig. 31a).
Dive Time Remaining with symbol NDL (or OTL) and Current Depth with symbol FT (or
M) will be displayed.
The operating mode symbol AIR (or NITROX) will also be displayed.
The Bar Graphs will indicate nitrogen loading and ascent rate.
Pressing the RIGHT button will activate the Hydroglow backlight.
Page 37
No Decompression Dive Mode Alternate Display 1 (Fig. 32)
BT
MAXFTFT
PO2
SAT
AM
To view Alternate Display 1, press the LEFT button 1 time.
Bottom Time (BT), Maximum Depth (MAX), and (if set for Nitrox) percentage of Oxygen Saturation (O2SAT) and level of PO2, will be displayed for 10 seconds.
No Decompression Dive Mode Alternate Display 2 (Fig. 33)
To view Alternate Display 2, press the LEFT button 2 times while viewing the Main Display, or
1 time while viewing Alternate Display #1.
NITROX
MAX
ReACT Pro
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BT
SAT
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2
PO2
Water Temperature (F or C), Time of Day (AM or PM), and (if set for Nitrox) the FO2 value set
will be displayed for 10 seconds.
Bar Graphs
As your Depth and Bottom Time increase during a dive, the Nitrogen Bar Graph will fill with
segments (green toward red) to represent nitrogen loading. Segments of the Ascent Rate Indicator fill (and recede) as your Ascent Rate increases (and decreases) throughout the dive.
WARNING: Every effort should be made to keep each of the bar graphs in
the green throughout your dives.
Fig. 32 - No Deco Alternate #1
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NITROX
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AM
Fig. 33 - No Deco Alternate #2
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Page 38
FT
STOP
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NITROX
FT
Fig. 34 - No Deco Safety Stop
STOP
38
NO DECOMPRESSION DIVE MODE SAFETY STOP
Upon ascending to 20 feet (6 meters) on any No Decompression dive in which Depth exceeded
30 feet (9 meters), a single beep Alert is sounded and a Safety Stop screen appears with a countdown timer beginning at 3:00 (min:sec) and counting down to :00.
The Safety Stop is not mandatory and there is no penalty if you surface during the countdown period.
In the event that you descend below 30 feet (9 meters) during the countdown, the No Deco Main
screen replaces the Safety Stop screen which reappears upon ascent to 20 feet (6 meters).
Displayed from left to right and top to bottom are (Fig. 34) -
Dive Time Remaining (min) and graphic NDL (or OTL)
Mode icon AIR (or NITROX)
Countdown Timer (min:sec) and graphic STOP
Current Depth and graphic FT (or M)
Safety Stop Depth of 20 feet (or 6 meters) in the lower/right portion of the screen
Applicable Bar Graphs - NiBG, ARI
Pressing the LEFT button activates the Backlight.
Pressing the RIGHT button accesses Alternate Displays.
Page 39
ReACT Pro
POST
DIVE
MODES
39
Page 40
AM
AM
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POST DIVE SURFACE MODE
When you ascend to 3 feet (1 meter) or shallower, the ReACT Pro will enter Surface Mode and
begin counting your Surface Interval.
NITROX
AM
Fig. 35 - Transition Period
1
0
N
O
I
S
S
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R
P
M
O
C
NITROX
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D
O
N
F
T
/
T
I
O
U
N
3
A
C
M
D
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C
O
2
0
F
T
D
/
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6
C
M
O
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C
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2
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1
2
Fig. 36 - Temperature & O2Sat
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NITROX
AM
Fig. 37 - Log Mode
40
TRANSITION PERIOD
The first 10 minutes is, in affect, a Transition Period during which time the following information is displayed top to bottom (Fig. 35):
Main Time display counting Surface Interval (colon flashing).
Wave symbol flashing to indicate Surface Mode (the Dive Profile symbol disappears).
Operating mode symbol AIR (or NITROX).
Date (shown is 6/13) and Time (11:15 AM)
3
0
F
T
/
9
M
4
0
F
T
/
Nitrogen Bar Graph indicating current nitrogen loading.
If you descend during the 10 minute Transition Period, time underwater will be considered a continuation of that dive. The time at the surface (if less than 10 minutes) will not be added as Bottom Time.
To view the Temperature and O2SAT (Fig. 36), press the LEFT button.
The unit will revert to Surface Mode after 10 seconds.
To view that dive's Log (Fig. 37), press the LEFT button 2 times (while in Surface Mode), then-
press the RIGHT button 1 time to view the Nitrogen data screen*
press the RIGHT button again to view the Oxygen data screen*
(* Nitrogen and Oxygen data screens are described on page 44.)
The unit will revert to Surface Mode after 2 minutes.
Page 41
NOTE: Data will not be stored in the unit's Log and Download memory
MAXFTFT
AM
N
until the 10 minute Transition Period on the surface is completed. Also,
no other modes are accessible.
ReACT Pro
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AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS)
Once 10 minutes have elapsed, the Wave symbol stops flashing indicating that the dive and
Transition Period are completed, and a subsequent descent will be considered a new dive. That
dive will then be entered into the Dive Log and download memory.
For the remainder of the first 2 hours after surfacing, information will continue to be displayed
as Surface Mode (Fig. 38) and you will have full access to the other modes.
To view the Temperature and O2SAT:
press the LEFT button 1 time, while in Surface Mode (Surf > Temp)
The unit will revert to Surface Mode after 10 seconds.
To access FO2 Mode (Fig. 39):
press the LEFT button 2 times, while in Surface Mode (Surf > Temp > FO2)
If the FO2 Default was set OFF, the FO2 displayed will be the same value previously set.
If the FO2 Default was set ON, the FO2 displayed will be the 'Default value' of 50 and
will have to be set for the breathing gas used for the next dive.
press the RIGHT button to alter the FO2 setting, if required
The unit will revert to Surface Mode after 2 minutes, unless the LEFT button is pressed to
access the Plan Mode.
NITROX
AM
Fig. 38 - Surface Mode
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NITROX
MAX
Fig. 39 - FO2 Set Mode
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Page 42
SAT
MAXFTFT
NITROX
MAX
Fig. 40 - Adjusted NDLs
a
Fig. 41 - Fly/DeSat
42
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press the LEFT button 3 times, while in Surface Mode (Surf > Temp > FO2 > Plan)
press the RIGHT button to scroll through the sequence of available Depths/Times.
The unit will revert to Surface Mode after 2 minutes, unless the LEFT button is pressed to
access the Log Mode.
The Plan Mode will now show either adjusted no decompression limits based upon your previous
dive profiles, if calculated to be nitrogen controlled (Fig. 40), or adjusted oxygen tolerance limits
based upon either a single dive exposure or your 24 hour accumulation of oxygen, if calculated to
be oxygen controlled. The symbol NDL, or OTL, will indicate which is in control.
The Plan Mode will only display Depths/Times to the Maximum Depth allowed by the nitrogen
or oxygen limit, whichever is in control. Calculated dive times and the maximum allowed depth
displayed will increase as the real time Surface Interval increases after completion of a dive.
To access Plan Mode:
D
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To access Fly/Desat Mode countdowns (Fig. 41):
press the LEFT button 4 times, while in Surface Mode (Surf > Temp > FO2 > Plan > Fly)
C
O
SAT
D
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The unit reverts to Surface Mode after 2 minutes, unless the LEFT button is pressed to ac-
cess Log Mode.
The Time to Fly counter (Fig. 41a) begins counting down 10 minutes after the last dive (after the
Transition Period) displaying FLY with a countdown that starts at 23:50 (hr:min) and counts
down to 0:00 (hr:min).
Page 43
The Desat counter (Fig. 42a) provides calculated time for tissue desaturation at sea level. It be-
SAT
SAT
gins 10 minutes after the last dive displaying SAT with a countdown that starts at 9:59 (hr:min)
maximum and counts down to 0:00 (hr:min).
ReACT Pro
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a
If Time to Desaturate is calculated to be greater than 9:59 (hr:min), the display will indicate
9:++ (Fig. 43a) until the time decreases to 9:59.
If a Violation occurred during the dive, Time to Desaturate will not be displayed and a single
dash ( - ) will appear instead of the letters FLY.
LOG MODE
Information from your latest 50 dives is stored in the Log for viewing. After exceeding 50 dives,
the ReACT Pro will overwrite the oldest dive in the Log (i.e., the most recent dive deletes the
oldest). Log information will not be lost when the battery is removed/replaced, but factory service will delete data.
Log Mode recalls dives in reverse order from the one most recently recorded back to the oldest of
the 50 dives stored. Your most recent dive will always be the first shown when Log Mode is accessed. Each dive has three Log screens - Date/Time started, Nitrogen data, and Oxygen data.
Dives are identified by the Dive Number (for that activation period) and Date/Time started. The
first dive of a new Activation Period will be #1.
SAT
Fig. 42 - Fly/DeSat
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SAT
Fig. 43 - DeSat > 9:59
a
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Page 44
AM
NITROX
BT
MAXFTFT
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second and third screens for that dive (Nitrogen and Oxygen related data).
To access the Log Mode (10 minutes after a dive):
press the LEFT button 5 times, while in Surface Mode, or 1 time, while viewing Fly/Desat
The LEFT button is used to access (or bypass) dives in the Log and the RIGHT button to view
AM
the first screen (Dive Identifier - Fig. 44) of the most recent dive will appear displaying -
LOG symbol and Dive Number (1 to 50)
AIR (or NITROX) symbol
Date/Time the dive started
Fig. 44 - Log Screen #1
NITROX
MAX
Fig. 45 - Log Screen #2
44
Hint: To 'bypass' this dive's Log to view an older dive's Log, press the LEFT button re-
peatedly until that dive's Log appears.
To view the second screen for that dive (Nitrogen Data- Fig. 45):
D
E
BT
press the RIGHT button 1 time. Information includes -
LOG, AIR (or NITROX), and Dive Profile symbols
Elapsed Dive Time and symbol BT
Maximum Depth reached and symbols MAX and FT (or M)
Ascent Rate Indicator - showing the maximum ascent rate
maintained for 4 consecutive seconds during the dive
Nitrogen Bar Graph - showing tissue nitrogen loading at the time you
surfaced from the dive. It will also display the segment that reflects the
maximum nitrogen loading that was achieved during the dive (Fig. 45a).
Page 45
To view the third Log screen for that dive (Oxygen Data - Fig. 46):
PO2
SAT
SAT
press the RIGHT button 1 time, while viewing Nitrogen Data. Information displayed in-
cludes LOG, NITROX, and Wave symbols
Surface Interval - prior to that dive
FO2 value - % set for that dive
O2SAT Value (O2 accumulated at the time you surfaced, whichever was higher of
per dive or per day) and symbol O2SAT
Maximum PO2 Level (reached during that dive) and symbol PO2
NITROX
ReACT Pro
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SAT
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2
PO2
If FO2 was set for AIR for that dive, the O2 screen will only display the symbol AIR.
press the LEFT button 1 time to view the first screen (Identifier) of the previous dive's Log
To exit Log Mode and return to the Surface Mode:
press BOTH buttons simultaneously for 2 seconds to revert to Surface Mode
The unit will automatically revert to Surface Mode after 2 minutes, if no button is pressed.
AFTER THE FIRST 2 HOURS
Two hours after the last dive, Surface Mode will no longer be displayed. The Fly/Desat Mode
(countdown timers) will be displayed continuously, giving the final countdowns from 22:00 and
9:59 (hr:min) to 0:00 (Fig. 47).
Fig. 46 - Log Screen #3
D
E
SAT
Fig. 47 - >2 Hours After a Dive
45
Page 46
Fig. 48 - EA Mode
46
To access other modes or enter settings while in Fly/DeSat Mode:
press the RIGHT button 1 time, while Fly/Desat are displayed
The ReACT Pro will revert to Surface Mode.
It will return to Fly/Desat Mode again after 2 hours, if neither button is pressed.
Fly/DeSat can be viewed during the 2 hours by pressing the LEFT button 4 times while in
Surface Mode
EXTERNAL ACCESS (EA) MODE
Dive profile data is stored in your ReACT Pro's memory for subsequent download to the optional
PC program. Instructions for performing the interface and download are provided with the
Download hardware/software.
To access the External Access (EA) Mode:
press BOTH buttons simultaneously, while in Surface Mode
D
E
press the LEFT button 2 times - EA appears, flashing (Fig. 48)
press the LEFT button to bypass EA Mode, or press the RIGHT button to initiate download communication with the PC. The unit re-
verts to Surface Mode after 2 minutes, if neither button is pressed.
The Backlight will not operate while in EA Mode.
Page 47
ReACT Pro
SPECIAL
SITUATIONS
47
Page 48
EMERGENCY DECOMPRESSION
FT
The ReACT Pro is a sophisticated instrument designed with capabilities that go beyond the range
of recreational diving with compressed air. It will help you to avoid and, if necessary, manage
decompression.
WARNING: See pages 61 and 62 for Special Warnings and Additional
Safety Information.
NITROGEN BAR GRAPH
The Nitrogen Bar Graph offers you a convenient way to consistently monitor how close you are
coming to the No Decompression Limit. As you use the ReACT Pro and become familiar with
a
the Nitrogen Bar Graph, you will notice that it displays fewer segments for shorter dive times and
shallower depths. Use this feature to adjust conservatism to your diving needs.
Fig. 49 - No Deco
48
NITROX
D
E
NOTE: Use the yellow Caution Zone of the Nitrogen Bar Graph (Fig. 49a)
N
as a visual reference to place a wider margin of protection between you
and the No Decompression Limit.
FT
Genesis Scuba suggests keeping the Nitrogen Bar Graph in the green No Decompression
zone during all of your dives, and that it always be in the 'green' when leaving the water.
Page 49
DECOMPRESSION DIVE MODE
TAT
FT
STOP
TAT
FT
STOP
The ReACT Pro is designed to help you by providing a complete representation of how close you
are to entering decompression. Decompression Dive Mode activates when theoretical no decompression time/depth limits are exceeded.
In the event that you enter Decompression Mode, one Beep per second will sound. You then
need to immediately begin a safe controlled Ascent to a depth slightly deeper than, or equal to,
the Required Ceiling Stop Depth indicated and decompress for the Stop Time indicated.
Entry into Decompression Mode (Fig. 50)
Upon entering Decompression Mode, Wave/Ceiling Bar symbols and UP Arrow symbol appear
as a warning in the middle of the screen. The Nitrogen Bar Graph will display a segment next to
the deepest Stop Depth required (Fig. 50c). Other information displayed includes:
ReACT Pro
a
NITROX
FT
b
Fig. 50 - Entry into Deco/
Deco Main Display
D
E
C
O
TAT
STOP
b
c
Total Ascent Time (TAT) (Fig. 50a) - stop times required at all ceilings plus vertical as-
cent time calculated at 30 ft (9 m) per minute.
Operating Mode symbol NITROX (or AIR)
Stop Time Required (Fig. 50b) - for the Stop Depth indicated
Current Depth (Fig. 50d)
Ascent Rate Indicator - while ascending
If a Stop Depth of 50 FT (15 M) or 60 FT (18 M) is required, all segments of the Nitrogen Bar
Graph will be displayed and the required Stop Depth will appear numerically in the lower/right
portion of the screen (Fig. 51a).
D
E
C
O
D
E
C
O
TAT
D
E
C
NITROX
FT
STOP
O
D
E
C
O
Fig. 51 - Stop > 40 FT (12 M)
49
a
Page 50
TAT
FT
STOP
D
BT
MAXFTFT
PO2
SAT
PM
E
NITROX
FT
Fig. 52 - Deco Stop Main
D
E
NITROX
MAX
Fig. 53 - Deco Stop Alt #1
D
E
NITROX
Fig. 54 - Deco Stop Alt #2
50
To activate the Backlight while in Deco Mode, press the RIGHT button 1 time. The display will
D
E
C
TAT
STOP
remain illuminated for button depression time plus 10 seconds.
O
Deco Stop Main Display (Fig. 52)
Information displayed is similar to that displayed upon Entry into Deco.
Deco Stop Alternate Display #1 (Fig. 53)
To view Alternate Display #1, press the LEFT button 1 time while viewing the Main Display.
D
BT
E
C
Elapsed Dive Time and symbol BT, Operating Mode symbol NITROX (or AIR), Maximum
Depth and symbols MAX and FT (or M ), percentage of Oxygen Saturation and symbol O2SAT
O
(if Nitrox), and Level of PO2 and symbol PO2 (if Nitrox), will be displayed for 10 seconds then
SAT
O
2
PO2
revert to the Main Display.
Deco Stop Alternate Display #2 (Fig. 54)
To view Alternate Display #2, press the LEFT button 2 times while viewing the Main Display, or
1 time while viewing Alternate Display #1.
D
E
C
Water Temperature with the graphic F (or C), Operating Mode symbol NITROX (or AIR), the
O
FO2 Value set, and Time of Day and symbol AM (or PM) if set for 12 Hour Format, will be displayed for 10 seconds then revert to the Main Display.
PM
Page 51
MANAGING DECOMPRESSION STOPS
TAT
FT
STOP
FT
The amount of decompression Credit Time that you receive is dependent on Depth, with slightly
less Credit given the deeper you are below a Required Stop Depth.
ReACT Pro
D
E
D
E
C
O
TAT
b
You should stay slightly deeper (Fig. 55a) than the Required Stop Depth indicated (Fig. 55b) until the next shallower Stop Depth appears. Then, you can slowly ascend to, but not shallower
than that indicated ceiling Stop Depth.
WARNING: You must not ascend shallower than the decompression
ceiling indicated. Doing so will greatly increase your risk of
decompression sickness and place the ReACT Pro into a Conditional
Violation Mode (described on the next page).
Once all required decompression has been completed, the ReACT Pro will revert to the No Decompression Dive Mode (Fig. 56). This is indicated by Total Ascent Time = 0:00, and the Nitrogen Bar Graph receding into the Caution Zone.
Dive Time Remaining now appears in place of Total Ascent Time displaying the No Decompression Time Remaining (NDL) or Oxygen Accumulation Time Remaining (OTL), whichever
time is the least and in control.
NITROX
FT
STOP
a
Fig. 55 - Managing a Deco
Fig. 56 - Deco Completed
NITROX
FT
Stop
D
E
51
Page 52
TAT
FT
STOP
Flashing
D
E
D
E
C
O
TAT
NITROX
FT
a
Fig. 57 - Conditional Violation
(< 5 min above a Deco Stop)
STOP
52
WARNING: If you exceed certain limits, the ReACT Pro will not be able to
respond with information to guide you to the surface. These situations
exceed tested limits and can result in loss of some ReACT Pro functions
for 24 hours after the dive in which a Violation occurred. It is important to
understand each different Violation Mode and how to carry out emergency
procedures in the event that you enter one.
VIOLATION MODES
Violation Modes the ReACT Pro can enter are termed Conditional, Delayed, and Immediate.
Permanent Violation Mode and Gauge Mode are continuations of these. While in Violation
Modes, Alternate Displays similar to those shown for Deco Mode can be still be accessed using
the LEFT button, and the Backlight can be activated using the RIGHT button.
b
CONDITIONAL VIOLATION MODE
The unit will enter the Conditional Violation Mode if you ascend shallower than (Fig. 57a) the
Required Deco Ceiling Stop Depth displayed (Fig. 57b). One Beep per second will sound.
The UP Arrow will disappear, and Total Ascent Time (TAT) and the Ceiling Stop Bar symbol
will flash until you descend below the Required Stop Depth.
If you descend below the Required Stop Depth before 5 minutes have elapsed, the ReACT Pro
will continue to function in Decompression Dive Mode. In this case, no off-gassing credit will be
given, and for each minute above the Required Stop Depth 11/2 minutes of Penalty Time is added
to Required Stop Time and Total Ascent Time.
Page 53
The added Penalty Time will have to be served before obtaining off-gassing credit begins again.
TAT
FT
STOP
TAT
FT
STOP
Once the Penalty Time is served and off-gassing credit begins, Required Stop Depths and Times
will decrease toward zero, then the Nitrogen Bar Graph will recede into the yellow Caution Zone
and the ReACT Pro will revert to the No Decompression Dive Mode.
DELAYED VIOLATION MODE
Three conditions will cause the ReACT Pro to enter a Delayed Violation Mode:
1. You remain above the Required Ceiling Stop Depth for 'more than 5 minutes'.
Total Ascent Time (TAT), the Stop Bar and NITROX symbols, and NiBG DECO segment, flash
(Fig. 58) until you descend below the Required Stop Depth. A single Long Beep will sound.
ReACT Pro
Flashing
NITROX
FT
Fig. 58 - Delayed Violation
(> 5 min above a Deco Stop)
D
E
Flashing
D
TAT
STOP
E
C
O
You would then need to follow the Stop Depths and Times toward the surface until the Nitrogen
Bar Graph recedes into the yellow Caution Zone.
2. Your necessary Decompression requires a Ceiling Stop Depth between 60 feet (18
meters) and 70 feet (21 meters).
Total Ascent Time (TAT), the Stop Bar symbol, the full NiBG, and graphic 60 will flash (Fig.
59) until you descend below the Required Stop Depth. One Beep per second will sound.
You must ascend to just deeper than 60 feet (18 meters), staying as close to 60 feet (18 meters) as
possible without causing Total Ascent Time (TAT) to flash. When the Required Stop Depth indicates 50 FT (15 M), etc., you can ascend to, but no shallower than those depths and continue
decompressing.
Flashing
D
E
C
NITROX
FT
Fig. 59 - Delayed Violation
(> 60FT/M Stop Required)
O
D
E
C
O
TAT
D
E
C
O
STOP
D
E
C
O
53
Page 54
FT
Flashing
D
E
AIR
FT
Fig. 60 - Delayed Violation
(> 330 ft/99.5 m)
54
The ReACT Pro cannot accurately calculate decompression times for Stop Depths much greater
than 60FT (18M) and offers no indication of how much time spent underwater would result in
the need for a greater stop depth.
3. You exceed the maximum operating depth (330 feet/99.5 meters).
Upon descending deeper than 330 feet (99.5 meters), the loaded segments of the Nitrogen Bar
Graph will flash as a warning (Fig. 60). One Beep per second will sound.
Current Depth and Max Depth displays will only indicate 3 dashes (- - -) until ascent is made to
a depth shallower than 330 feet (99.5 meters).
Once you ascend above 330 feet (99.5 meters), the Current Depth display will be restored, however Max Depth will only display 3 dashes (- - -) for the remainder of that dive. The Log for that
dive will also only indicate dashes (- - -) as the Max Depth achieved.
WARNING: The expanded capabilities of the ReACT Pro are provided as
safety features to assist you with emergency situations. Special training,
equipment, and support are necessary for diving deeper than the
maximum recommended sport diving depth limit of 130 feet (39 meters).
Page 55
IMMEDIATE VIOLATION MODE AND GAUGE MODE
FT
WARNING: The ReACT Pro enters Immediate Violation Mode when a
situation totally exceeds its capacity to predict an ascent procedure.
These dives represent gross excursions into decompression that are
beyond the boundaries and spirit of the ReACT Pro design, and a ReACT
Pro should not be used for the dives.
Gauge Mode Underwater
If a Decompression ceiling Stop Depth of 70FT (21M) or greater is required, an Immediate
Violation Mode (Gauge Mode) will be entered. A single Long Beep will sound. This situation
would be preceded by entering Delayed Violation Mode, previously described.
ReACT Pro
Flashing
The ReACT Pro would then operate with limited functions in Gauge Mode during the remainder
of that dive and for 24 hours after surfacing.
Gauge Mode turns the ReACT Pro into a digital instrument without any decompression or oxygen monitoring functions. Only Current Depth and the Ascent Rate Indicator will be displayed.
The full Nitrogen Bar Graph will flash as a warning (Fig. 61). Alternate Displays can be accessed using the LEFT button, and the Backlight can be activated using the RIGHT button.
D
E
C
O
O
D
E
C
O
D
E
C
O
D
E
FT
C
Fig. 61 - Immediate Violation/
Gauge Mode Underwater
55
Page 56
PM
Flashing
Gauge Mode on the Surface
The ReACT Pro will also enter an Immediate Violation/Gauge Mode five minutes after surfacing from a dive in which a Delayed Violation occurred.
For the first 2 hours, Gauge Mode displays the Surface Interval, Date/Time, and the Nitrogen
Bar Graph flashes as a warning (Fig. 62).
To view Temperature, press the LEFT button 1 time.
To access FO2 Mode (in sequence but cannot be set), press the LEFT button 2 times.
To access Fly/DeSat Mode, press the LEFT button 3 times.
To access Log Mode, press the LEFT button 4 times.
To activate the Backlight, press the RIGHT button.
D
E
C
O
D
E
C
O
PM
Fig. 62 - Immediate Violation/
Gauge Mode On Surface
56
The Countdown Timer that appears when you access Fly/DeSat Mode and 2 hours after the dive
does not represent 'Time to Fly'. It is only provided to inform you of the time remaining before
normal ReACT Pro operation can resume with full features and functions.
D
E
C
O
PERMANENT VIOLATION
D
E
C
O
Entering the Immediate Violation Mode, then Gauge Mode, will result in loss of all ReACT Pro
decompression and oxygen monitoring functions for 24 hours after that dive. FO2 and Plan
Mode will not be accessible. This condition is considered a Permanent Violation, and in the
event that a dive is made during the 24 hour period, a full 24 hour surface interval must
then be served before all functions are restored.
Page 57
OXYGEN EXPOSURE
BT
MAXFTFT
PO2
SAT
FT
PO2
FT
PO2
The ReACT Pro is a sophisticated instrument designed with capabilities that go beyond the range
of recreational diving with compressed air. It will help you to avoid and manage excessive oxygen exposure.
Refer to the Reference section of this manual for additional information.
PARTIAL PRESSURE OF OXYGEN
As depth increases during a dive, the partial pressure of oxygen (PO2) increases. The current
Level of PO2 (Fig. 63a) may be viewed by pressing the LEFT button 1 time to access the Alternate #1 Display.
ReACT Pro
D
E
BT
SAT
O
NITROX
MAX
Fig. 63 - No Deco Alt #1
2
PO2
D
E
a
High PO2 Dive Mode
The ReACT Pro enters the High PO2 Dive Mode when PO2 becomes equal to, or greater than,
1.40 ATA, as indicated by the UP Arrow and symbol PO2 appearing on the display (Fig. 64) until PO2 decreases below a value of 1.40 ATA. The Audible Alarm emits one Beep per second.
If partial pressure of oxygen continues to increase, the value of PO2 will increase toward a maximum value of 5.00 ATA in increments of '.01' ATA.
When PO2 reaches a value of 1.60 ATA, the UP Arrow, NITROX, and PO2 symbols will flash as
a warning (Fig. 65). The Audible Alarm emits one Beep per second. When PO2 decreases below 1.60 ATA, the flashing will stop.
NITROX
FT
PO2
Fig. 64 - High PO2 Warning
Flashing
D
E
NITROX
FT
PO2
Fig. 65 - High PO2 Alarm
57
Page 58
BT
MAXFTFT
PO2
SAT
NITROX
MAX
Fig. 66 - No Deco Alt #1
58
WARNING: In the event that you enter High PO2 Dive Mode, you must
immediately focus on reducing the partial pressure of oxygen by slowly
ascending to a shallower depth at a safe rate in accordance with your
nitrox training. If you continue the dive at your current depth, or descend
deeper, your exposure to CNS oxygen toxicity will increase.
OXYGEN ACCUMULATION
It is important that you understand that conducting repetitive dives using enriched nitrogen-oxygen (nitrox) mixtures can lead to increases oxygen saturation (O2SAT) and the risk of pulmonary oxygen toxicity.
Genesis Scuba strongly recommends that you avoid exceeding oxygen exposure limits, and
reminds you that nitrox diving requires special training and understanding of the effects of
oxygen toxicity.
D
a
E
BT
During a Nitrox dive, the current Level of O2 saturation with symbol O2SAT (Fig. 66a) may be
viewed by pressing the LEFT button 1 time to access the Alternate #1 Display.
SAT
O
2
PO2
Displayed will be either the percentage (%) of oxygen accumulated during that dive, or during
the repetitive dives you conducted during that 24 hour period, whichever of the two is calculated
to be greater at that time.
Page 59
High O2 Saturation
OTL
FT
SAT
FT
SAT
If the calculated amount of oxygen saturation equals, or exceeds, 80% of the theoretical limit for
a single exposure or of the exposure limit for a 24 hour period, the UP Arrow and O2SAT symbols appear on the display (Fig. 67a).
If oxygen saturation continues to increase, the value of O2SAT will increase toward a maximum
value of 100 (%) in increments of 2 (%).
When O2SAT reaches a value of 100 (%), Oxygen Dive Time Remaining (OTL) becomes zero
(0:00) and the O2SAT, NITROX, and UP Arrow symbols will flash (Fig. 68) until O2SAT decreases below 100% at which time Oxygen Dive Time Remaining (OTL) will increase above zero
(0:00).
ReACT Pro
D
E
SAT
O
NITROX
FT
Fig. 67 - High O2 Warning
2
a
You must immediately focus on making a safe controlled ascent to the surface to prevent further
exposure. The UP Arrow will disappear upon surfacing. As your level of saturation decreases
during your surface interval, the amount of calculated dive time available will increase.
WARNING: If you exceed the per dive allowable oxygen exposure limit, it
is recommended that you allow a surface interval of at least 2 hours before
reentering the water. If you exceed the allowable limit for a 24 hour period,
you must allow a surface interval of at least 24 hours before reentering the
water.
Flashing
D
E
OTL
SAT
O
NITROX
FT
2
Fig. 68 - High O2 Alarm
59
Page 60
R
E
S
P
O
N
R
E
V
I
D
E
S
L
I
B
Be a -
RESPONSIBLE DIVER
at all times.
60
UNEXPECTED LOSS OF DISPLAYED INFORMATION
While diving, if you find that any major piece of equipment is not functioning correctly, you
must abort the dive immediately and surface slowly in a controlled manner.
If your ReACT Pro stops working for any reason, it is important that you have anticipated this
possibility and are prepared for it. This is an important reason to avoid pushing the no de-
compression and oxygen tolerance limits, and a critical reason to avoid entering decompression.
Regardless of your diving habits, Genesis Scuba advises you to dive with additional backup instrumentation that can provide the data necessary to properly surface if and when your primary
instruments fail.
As with any other piece of equipment, unforeseen things can happen. By preparing ahead of
time, you can spare yourself a great deal of frustration and disappointment. If you dive in situa-
tions where your trip would be ruined or your safety would be jeopardized by losing the use
of your ReACT Pro, an analog or digital backup system or use of standard air (or nitrox)
tables is highly recommended.
Page 61
ReACT Pro
SPECIAL WARNINGS and ADDITIONAL SAFETY INFORMATION
There are few legitimate excuses for making unplanned Decompression dives, and the
consequences of this type of diving can be severe. By making an unplanned Decompression
dive without the necessary preparation and training, you will have placed yourself in an
unnecessarily dangerous situation. Allow a surface interval of at least 24 hours before
reentering the water in the event a dive requires emergency decompression.
By entering decompression, you automatically impose a ceiling above you which you cannot
immediately ascend beyond, denying you free access to the surface.
Exiting the water with the Nitrogen Bar Graph in the red DECO zone greatly increases the risk
of decompression sickness, and may result in injury or death.
Existing data for making planned decompression dives is extremely limited, and virtually
nonexistent for repetitive decompression diving. Decompression diving greatly increases your
risk of decompression sickness.
Decompression diving, or diving deeper than 130 feet (39 m), will greatly increase your risk of
decompression sickness.
Genesis Scuba does not advocate diving to depths below 130 feet (39 meters), the basis for
which is purely theoretical.
61
Page 62
62
SPECIAL WARNINGS and ADDITIONAL SAFETY INFORMATION
Maximum limits for exposure to oxygen should not be exceeded, and the consequences of CNS
(Central Nervous System) oxygen toxicity can be severe, resulting in Gran Mal convulsions and
drowning.
Conducting repetitive dives using enriched nitrogen-oxygen mixtures can lead to oxygen
buildup, reducing oxygen tolerance while increasing the risk of pulmonary oxygen toxicity.
The oxygen features of the ReACT Pro are intended for use only by recreational divers trained
for nitrox diving by an instructor certified by a recognized training agency to teach diving with
nitrox.
Allowing oxygen saturation (O2SAT) to increase to 100 (%) greatly increases the risk of CNS
oxygen toxicity, and may result in serious injury or death.
It should not be considered that the capabilities built into the ReACT Pro provide any implied
approval or consent from Genesis Scuba for individuals to exceed the defined limits of
recreational dive profiles, as agreed on by all internationally recognized training agencies.
The ReACT Pro is not intended for use by military or commercial divers.
Page 63
ReACT Pro
CARE,
INSPECTION,
AND
SERVICE
63
Page 64
CARE AND CLEANING
The ReACT Pro is a sensitive electronic instrument. Although it has been built to endure the rigors of diving, it still must be
handled carefully to protect it from shock, excessive heat, chemical attack, and tampering. The housing is made of an impact
resistant resin that is shock resistant but susceptible to scratches and attack by strong chemicals.
CAUTION: Never spray aerosols of any kind on, or near, the ReACT Pro. The propellants may
chemically attack the plastic.
Be careful not to leave it in an unsupervised, unprotected location where it might be damaged. Many dive computers (and
dive trips) are ruined due to carelessly tossed weight belts or cylinders.
If the lens becomes scratched, Genesis Scuba can replace it, although small scratches will naturally disappear underwater.
For even more convenience and additional protection against scratches, place a transparent Instrument Lens Protector on the
gauge face. This can be purchased from your Authorized Genesis Scuba Dealer.
CLEANING
Soak and rinse the ReACT Pro in fresh water following each day of diving, preferably after each dive, and ensure that it is
free of any debris or obstructions that would block the sensors. If possible, use lukewarm water to dissolve any salt crystals.
Salt deposits can also be dissolved using a 50% white vinegar/50% fresh water bath. Towel dry before storing, and transport
your ReACT Pro cool, dry, and protected.
CAUTION: Never, under any circumstances, poke any object through any slots or holes on the rear
side of the ReACT Pro. Doing so may damage the Depth Sensor, possibly resulting in erroneous
depth and/or dive time remaining displays.
64
Page 65
ReACT Pro
ANNUAL INSPECTIONS AND SERVICE
Your ReACT Pro should be inspected annually by an Authorized Genesis Scuba Dealer who will perform a factory prescribed
function check and inspection for damage or wear. To keep the 2 year limited warranty in effect, this inspection must be completed one year after purchase (± 30 days). The original sales receipt and owner's portion of the Warranty Registration Card
must be presented at the time of service. It is recommended that you have this inspection performed even after the warranty
period has expired to ensure your ReACT Pro is working properly.
A service record is provided in the back of this manual for your convenience. It should be signed by the Authorized Genesis
Dealer service technician after each annual inspection or factory service. The costs of annual inspections are not covered under the terms of the 2 year limited warranty.
WARNING: If you are in doubt about the accuracy of your ReACT Pro's depth readings, DO NOT
attempt to dive with it until it has been inspected by an Authorized Genesis Scuba Dealer.
The facility conducting the depth check must have a pressure test chamber that is capable of pressurizing the ReACT Pro to
its maximum operating depth (330 feet / 99.5 meters). Also, the test gauge on the pressure test chamber must be as accurate
as the Depth Sensor in the ReACT Pro (±1% of full scale).
CAUTION: Never pressure test the ReACT Pro in an air environment. Doing so may damage the
Depth Sensor; possibly resulting in erroneous depth or time readings.
It is possible to damage the ReACT Pro Depth Sensor if it is not pressure tested properly. The ReACT Pro must be placed
completely underwater when being pressure tested to protect the Depth Sensor.
65
Page 66
AM
BATTERY LIFE
Battery consumption rate varies throughout periods of operation, which begin upon activation
and continue for 24 hours after surfacing from a dive. The exact number of dives, or hours of operation, that you will obtain is subject to variables, such as, temperature, the number of dives
conducted during each operational period, and the frequency and duration that the backlight is
used (excessive use will reduce battery life).
Tests and calculations indicate that a new CR2450 Lithium battery will maintain unit operation
for approximately 300 hours or -
150 dives, if 1 - 1 hour dive per activation period to over 300 dive hours, if 2 or more 1 hour dives per activation period
LOW BATTERY CONDITION
a
D
E
During unit operation, voltage level is checked every second while on the surface. You will be
alerted to a Low Battery condition by a flashing Battery symbol (Fig. 69a).
AIR
D
E
C
AM
Fig. 69 - Low Battery Condition
66
Upon decreasing to a voltage level that will not maintain proper unit operation, the symbol will
flash for 5 seconds followed by shutdown of the ReACT Pro.
If the ReACT Pro did not display the Low Battery symbol prior to entering the Dive mode, and a
Low Battery condition occurs during a dive, there will be sufficient battery power to maintain
unit operation for the remainder of that dive, however the Backlight will be disabled. You will
be alerted by the Battery symbol.
Page 67
NOTE: Genesis Scuba strongly advises that you replace the Battery and
N
DO NOT attempt to dive when the Battery symbol remains on the display,
and that you replace the Battery with a new one prior to any multi day dive
trip.
BATTERY REPLACEMENT PROCEDURES
MODULE REMOVAL FROM BOOT
If the ReACT Pro is in a Wrist Boot, it will be necessary to peel the lips of the Boot downward
off the Module while applying pressure from underneath, working it out slowly.
If it is in a Console, bend the rubber Console Boot back to expose the edge of the Module. If the
Boot is flexible enough to permit, you may bend it back far enough to scoop the Module out with
your finger. Otherwise, it may be necessary to insert a blunt screwdriver until the tip rests just
underneath the Module. DO NOT pry the Module from the Console! Slowly increase the pressure under the Module by releasing the tension on the rubber Boot. The Module will slide up the
screwdriver and exit the Console.
ReACT Pro
CAUTION: The procedure that follows must be closely adhered to.
Damage due to improper battery replacement is not covered by the ReACT
Pro's limited 2 year warranty.
Responsible
67
Page 68
BATTERY REPLACEMENT
The Battery Compartment should only be opened in a dry and clean environment with extreme
care taken to prevent the entrance of moisture or dust.
As an additional precautionary measure to prevent formation of moisture in the Battery Compartment, it is recommended that the Battery be changed in an environment equivalent to the local
outdoor temperature and humidity (e.g., do not change the Battery in an air conditioned environment, then take it outside during a hot sunny day).
Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged.
If there is any sign of moisture in the module, DO NOT use the ReACT Pro until it re-
ceives proper service by an Authorized Genesis Scuba Dealer.
WARNING: If damage, moisture, or corrosion is found, it is recommended
that you return your ReACT Pro to an Authorized Genesis Scuba Dealer,
and DO NOT attempt to use it until it has received factory prescribed
service.
68
R
E
S
P
O
N
R
E
V
I
D
E
S
L
I
B
NOTE: If the old battery can be removed and the new one inserted within
N
8 seconds, nitrogen and oxygen calculations ,and settings, will be
retained for repetitive dives.
Page 69
Battery Hatch Removal
Locate the Battery Compartment on the back of the unit.
While applying steady inward pressure on the center of the Battery Hatch, rotate the Hatch
Retaining Ring 10 degrees clockwise by pressing against the upper tab of the Retaining
Ring with a small blade screwdriver (Fig. 70).
Lift the Hatch Ring up and away from the Housing, or turn the module over to allow the
Ring to drop out into your hand.
Remove the Battery Hatch.
Battery Removal
Remove the Retaining Bar located across the lower portion of the Battery (Fig. 71a).
Remove the Hatch O-ring. DO NOT use tools
Using care not to damage the Battery Contacts (Fig. 71 b/c), slide the Battery up and out of
the Battery Compartment.
Inspection
Closely check all of the sealing surfaces for any signs of damage that might impair proper
sealing.
Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged.
If it is necessary to clean the Battery Compartment, flush it and all components with a so-
lution of 50% white vinegar and 50% fresh water. Rinse with fresh water, and allow to
dry overnight, or blow dry with a hair dryer (set at 'no heat').
ReACT Pro
Fig. 70 - Hatch Ring Removal
c
a
b
Fig. 71 - Battery Compartment
69
Page 70
Fig. 72 - Battery Insertion
Fig. 73 - Retaining Bar
Fig. 74 - Retaining Ring
70
WARNING: If damage or corrosion is found in the Battery Compartment,
return your ReACT Pro to an Authorized Genesis Scuba Dealer, and DO
NOT attempt to use it until it has received factory prescribed service.
Battery Installation
Slide a new 3 volt type CR2450 Lithium Battery, negative (-) side down into the Battery
Cavity. Slide it in from the right side and ensure that it slides under the contact clip on
the left rim of the cavity (Fig. 72).
Orient the Retaining Bar across the lower portion of the Battery and carefully push it down
into position (Fig. 73).
Battery Hatch and Hatch Retaining Ring Installation
Replace the Hatch O-ring with a new one. This O-ring must be a genuine Genesis Scuba
part that can be purchased from an Authorized Genesis Scuba Dealer. Use of any other
O-ring will void the warranty.
Lightly lubricate the new Hatch O-ring with silicone grease and place it on the inner rim
of the Battery Hatch. Ensure that it is evenly seated.
Slide the Hatch Retaining Ring, top portion first (small opening), onto your thumb (Fig.
74).
Carefully place the Battery Hatch (with O-ring) into position on the rim of the Battery
Compartment, then press it evenly and completely down into place with your same thumb.
Maintain the Battery Hatch securely in place and, using your other hand, slide the Retain-
ing Ring down off your thumb and into position around the Battery Compartment.
Page 71
The tabs on the Retaining Ring fit down into the two slots located at the 2 and 8 o'clock
positions.
Using your fingers, turn the Ring counter clockwise 5 degrees until the tabs engage (Fig.
75), then tighten it 5 more degrees by turning it counter clockwise with the aide of a small
blade screwdriver (Fig. 76).
NOTE: While tightening (turning) the Retaining Ring, exert continuous
N
inward pressure on it until it is secured in the proper position. A small
symbol located on the Ring should be aligned with the Locked symbol
located on the Housing (Fig. 76 a/b)
Inspection
Activate the unit and watch carefully as it performs a full diagnostic and battery check,
and enters Surface Mode. Observe the LCD display to ensure it is consistently clear and
sharp in contrast throughout the screen.
WARNING: If there are any portions of the display missing or appearing
dim, or if a Low Battery condition is indicated, return your ReACT Pro to
an Authorized Sherwood Scuba Dealer for a complete evaluation before
attempting to use it.
ReACT Pro
Fig. 75 - Retaining Ring Tabs
a
b
Fig. 76 - Securing the
Retaining Ring
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RETURNING THE MODULE TO BOOT
If the Boot was fitted with a Spacer and it was previously removed, replace the Spacer into
the Boot.
Orient the Module over the opening in the Boot, and dip the bottom edge into it while
pressing the top edge with the palm of your hand. Stop pressing when the bottom edge of
the Module has just entered the Boot.
Correct the alignment of the Module as needed so that it is straight.
Press the Module completely into place with your thumbs, watching the alignment, until it
snaps into place.
NOTE: The Wet Activation Contacts are located on the stems of
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the Buttons and on metal Pins located on the lower left side of the
module. The ReACT Pro module is designed for use in a Boot that
has an opening on the left side which exposes the Pins (and side
Wet Activation Contact) to water upon immersion.
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WARNING: If the ReACT Pro is installed in a Boot that does not
have the side opening where the side Wet Activation Contact is
located, the unit may not activate automatically upon descending
on a dive.
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ReACT Pro
REFERENCE
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Page 74
FT
D
E
NITROX
FT
Fig. 77 - No Deco Dive Time
Remaining
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DIVE TIME REMAINING
One of the most important pieces of information on the ReACT Pro is the patented Dive Time
Remaining numeric display. To numerically display Dive Time Remaining, the ReACT Pro constantly monitors two critical pieces of information; no decompression status and oxygen accumulation status. The Dive Time Remaining display will indicate the time that is more critical for
you at that particular moment (i.e.; whichever time is the least amount available of the two).
This unique feature has been granted U.S. Patent No. 4,586,136.
No Decompression Dive Time Remaining
No Decompression Dive Time Remaining is the maximum amount of time that you can stay at
your present depth before entering a decompression situation. It is calculated based on the
amount of nitrogen absorbed by twelve hypothetical tissue compartments. The rates each of these
a
compartments absorb and release nitrogen is mathematically modeled and compared against a
maximum allowable nitrogen level. Whichever one of the twelve is closest to this maximum
level is the controlling compartment for that depth. Its resulting value will be displayed numerically with the NDL symbol (Fig. 77a) and graphically as the Nitrogen Bar Graph.
As you ascend from depth following a dive that has approached the no decompression limit, the
Nitrogen Bar Graph will recede as control shifts to slower compartments. This is a feature of the
decompression model that is the basis for multilevel diving, one of the most important advantages the ReACT Pro offers.
Page 75
The no decompression algorithm is based upon Haldanes theory using maximum allowable ni-
OTL
FT
trogen levels developed by Merrill Spencer. Repetitive diving control is based upon experiments
designed and conducted by Dr. Ray Rogers and Dr. Michael Powell in 1987. Diving Science and
Technology® (DSAT), a corporate affiliate of PADI®, commissioned these experiments.
O2 Dive Time Remaining
As oxygen accumulation increases during a nitrox dive, Dive Time Remaining before reaching
the oxygen saturation limit for that dive, or 24 hour period, decreases.
When the O2 time becomes less than the No Deco Dive Time Remaining (NDL), calculations for
the current depth will be controlled by oxygen. Oxygen Time Remaining will then appear as the
main numeric time display as signified by the OTL symbol (Fig. 78a).
ReACT Pro
ALTITUDE DIVING
Atmospheric pressure decreases as Altitude increases above sea level. Weather systems and ambient temperature also affect barometric pressures. Consequently, depth reading instruments that
do not compensate for the decrease in ambient pressure indicate depth readings shallower than
the depth they are actually at.
The ReACT Pro automatically compensates for decreased ambient pressures for Altitudes between 2,000 (610 meters) and 14,000 feet (4,267 meters). Its program contains a high altitude
algorithm that reduces no decompression and oxygen exposure limits to add a larger zone of caution.
D
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OTL
NITROX
FT
Fig. 78 - Dive Time Remaining
(OTL less than NDL)
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a
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The ReACT Pro senses ambient pressure when it is manually activated, every 15 minutes while it is activated, or every 30
minutes when it is not activated. At an Altitude of 2,000 feet (610 meters), it will automatically recalibrate itself to measure
depth in feet of fresh water rather than feet of sea water. It will then readjust the no decompression and oxygen limits at additional intervals of 1,000 feet (305 meters). Therefore, when returning to lower Altitudes, diving should not be conducted
until the unit automatically clears of any residual nitrogen and oxygen loading and resets to operate at the new lower Altitude.
WARNING: Diving at high altitude requires special knowledge of the variations imposed upon
divers, their activities, and their equipment by the decrease in atmospheric pressures. Genesis
Scuba recommends completion of a specialized Altitude training course by a recognized training
agency prior to diving in high altitude lakes or rivers.
FLYING AFTER DIVING
In 1990 the Undersea and Hyperbaric Medical Society (UHMS) published a set of guidelines aimed at minimizing the possibility of decompression sickness due to flying too soon after diving. The UHMS suggests* that divers using standard air cylinders and exhibiting no symptoms of decompression sickness wait 24 hours after their last dive to fly in aircraft with cabin
pressures up to 8,000 feet. (2,440 meters).
The two exceptions to UHMS's recommendation are:
If a diver had less than 2 hours total accumulated dive time in the last 48 hours, then a 12 hour surface interval before
flying is recommended.
Following any dive that required a decompression stop, flying should be delayed for at least 24 hours, and if possible,
for 48 hours.
* excerpted from The UHMS Flying After Diving Workshop
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Since the 1990 UHMS guidelines were introduced, data from the Divers Alert Network (DAN)
was introduced that resulted in DANs position** that A minimum surface interval of only 12
hours would be required in order to be reasonably assured a diver will remain symptom free upon
ascent to altitude in a commercial jet airliner (altitude up to 8,000 feet/2,440 meters). Divers
who plan to make daily, multiple dives for several days, or make dives that require decompression stops, should take special precautions and wait for an extended surface interval beyond 12
hours before flight.
** excerpted from DANs Position on Recreational Flying After Diving
Both the UHMS and DAN agree that There can never be a flying after diving rule that is guaranteed to prevent decompression sickness completely. Rather, there can be a guideline that represents the best estimate for a conservative . . . surface interval for the vast majority of divers.
There will always be an occasional diver whose physiological makeup or special diving circumstances will result in the bends.
ReACT Pro
Maximum
Exposure Time
NITROX DIVING
Both central nervous system (CNS) oxygen toxicity and pulmonary oxygen toxicity were taken
into consideration when the Maximum Durations (Fig. 79) for a Single Exposure and for Any
24-Hour Day were published by in the October 1991 NOAA Diving Manual. Although CNS
oxygen toxicity is considered the primary constraint for higher levels of partial pressure of oxygen (PO2), there are circumstances in which pulmonary oxygen toxicity can limit exposures.
CNS oxygen toxicity is not considered likely at PO2 levels below 1.30 ATA. It is, however, related to diver's work level. Performing strenuous tasks could cause the symptoms of O2 poi-
soning at PO2 levels lower than they normally would appear during casual diving.
PO2
(ATA)
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
1.50
1.60
Per Dive
(Min)
720
570
450
360
300
240
210
180
150
120
45
Per 24 hr
(Min)
720
570
450
360
300
270
240
210
180
180
150
Fig. 79 - NOAA O2 Limits
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WARNING: In the event that you exceed the maximum limit of per dive allowable oxygen exposure
(dose), it is recommended that you allow at least 2 hours at a normoxic PO2 before diving again. If
you have reached the Maximum Total 24-hour Day Limits, you must spend at least 12 hours at a
normoxic PO2 before diving again (you should allow a surface interval of at least 24 hours before
reentering the water).
WARNING: Diving with enriched nitrogen-oxygen (nitrox) mixtures requires special knowledge of
the variations imposed upon divers, their activities, and their equipment by the increased
percentage of oxygen. Genesis Scuba recommends completion of a specialized Nitrox training
course by a recognized training agency prior to diving with any enriched nitrogen-oxygen (nitrox)
mixtures.
MULTIPLE TISSUE TRACKING
The ReACT Pro tracks twelve tissue compartments with halftimes ranging from 5 to 480 minutes. The Nitrogen Bar Graph
always displays the controlling compartment that is the only one important at that time.
Think of the Nitrogen Bar Graph as transparent displays laid on top of one another. The tissue compartment that has filled
up fastest is the only one that can be seen from the top.
At any particular point, one tissue compartment may be absorbing nitrogen, while another that was previously higher may be
off-gassing. One compartment hands over control to another compartment at a different depth. This feature of the Decom-
pression Model is the basis of multilevel diving, one of the most important contributions the ReACT Pro offers you.
Take advantage of this feature and make all of your dives multilevel dives.
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ReACT Pro
REPETITIVE DECOMPRESSION DIVING
The decompression model used by the ReACT Pro is based on the no decompression multilevel repetitive dive schedules successfully tested by Dr. Ray Rogers and Dr. Michael Powell. These tests did not include repetitive dives deeper than 90 feet
(27 meters) or decompression dives. Due to the present unavailability of statistical data, the ReACT's decompression predictions are based on U.S. Navy theory. Therefore, pay special attention to the following warnings.
WARNINGS:
The decompression capabilities of the ReACT Pro are intended strictly for emergency use.
Decompression diving is inherently hazardous and greatly increases your risk of decompression
sickness, even when performed according to the computer's calculations. In the event that you
must make an emergency decompression dive, you must not make another dive for at least 24
hours.
Using the ReACT Pro, just as using the U.S. Navy (or other) No Decompression Tables, is no
guarantee of avoiding decompression sickness, i.e. the bends.
Genesis Scuba advocates responsible diving practices and does not recommend decompression
diving, or diving below 130 feet (39 meters).
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ReACT Pro U.S.N.
Depth NDL-mins. NDL
feet (meters) Eng (Metric) mins.
30 (9) 260 (283) - - 35 - - - 310
40 (12) 137 (144) 200
50 (15) 81 (85) 100
60 (18) 57 (59) 60
70 (21) 40 (41) 50
80 (24) 30 (32) 40
90 (27) 24 (25) 30
100 (30) 19 (20) 25
110 (33) 16 (17) 20
120 (36) 13 (14) 15
130 (39) 11 (11) 10
140 (42) 9 (9) 10
150 (45) 8 (8) 5
160 (48) 7 (7) 5
170 (51) 7 (6) 5
180 (54) 6 (6) 5
190 (57) 5 (5) - - -
Fig. 80 - NDL
Comparison
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NO DECOMPRESSION LIMITS
Note how the No Decompression Limits (NDL) for the ReACT Pro compare with the U.S. Navy
limits (Fig. 80). For most depths, the ReACT Pro provides somewhat less no decompression
times than the U.S. Navy Tables. However, while the No Decompression Limits may be less, you
will receive increased allowable Bottom Times as you take advantage of the multilevel dive capabilities offered by the ReACT Pro.
CONCLUSION
The ReACT Pro is an informational tool whose entire worth depends on using it correctly.
Learn how to use it and use it wisely. Have fun with the ReACT Pro, and thank you for being
a responsible diver!
Responsible
Page 81
SPECIFICATIONS
ReACT Pro
NO DECOMPRESSION MODEL
Basis:
Modified Haldanean Algorithm
12 tissue compartments
Data Base:
Diving Science and Technology (DSAT) - Rogers/Powell
Performance:
Tissue compartment halftimes (in mins.) Spencers M values
5, 10, 20, 40, 80, 120, 160, 200, 240, 320, 400, 480
Reciprocal subsurface elimination
60 minute surface credit control for compartments faster than 60
minutes
Tissue compartments tracked up to 24 hours after last dive
Decompression Capabilities:
Decompression stop ceilings at 10, 20, 30, 40, 50, & 60 feet
(3, 6, 9, 12, 15, & 18 meters)
Altitude Algorithm:
Based on NOAA tables
Oxygen Exposure Limits:
Based on NOAA tables
OPERATIONAL MODES
Activation/Diagnostic
Surface
Temperature/O2SAT
FO2 Set
Plan
Fly/DeSat
Log (identifier/nitrogen/oxygen)
Set -
FO2 50% Default (On/Off)
Units of Measure (Imperial / Metric)
External Access (to download)
Date (year, month, day)
Hour Format, Time (hour, minutes)
Dive Profile Sampling Rate
Alarms (On/Off)
Wet Activation (On/Off)
No Decompression Dive ( Main, Alt 1, Alt 2)
Decompression Dive (Main, Alt 1, Alt 2)
Conditional Violation
Delayed Violation
Immediate Violation/Gauge
High PO2 Level
High O2SAT
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SPECIFICATIONS (continued)
DISPLAY RANGE/RESOLUTION
Numeric Displays: Range: Resolution:
Dive Number 0 - 50 1
Depth 0 - 330 ft (0 - 99.5 m) 1 ft (.5 m)
Maximum Depth 330 ft (99.5 m) 1 ft (.5 m)
FO2 Set Point Air, 21 - 50 % 1 %
PO2 Value 1.40 - 5.00 ATA .01 ATA
O2SAT Value 0 - 100 % 2 %
Dive Time Remaining 0 - 9 hr. 59 min. 1 minute
Total Ascent Time 0 - 9 hr. 59 min. 1 minute
Decompression Stop Time 0 - 99 min. (per stop depth) 1 minute
Elapsed Dive Time 0 - 9 hr. 59 min. 1 minute
Surface Time 0 - 23 hr. 59 min. 1 minute
Dive Log Surface Interval 0 - 25 hr. 59 min. 1 minute
Time to Fly 23 hr. 50 min. - 0* 1 minute
(* starting 10 min. after the dive)
Time to Desaturate 9 hr. 59 min. - 0* 1 minute
(* starting 10 min. after the dive)
Special Displays: Occurrence
Diagnostic Display Activation
Out of Range (- - -) >330 feet (>99.5 meters)
Gauge Mode Countdown Timer24:00 - 0:00 hr:min (after violation)
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BAR GRAPHS
Nitrogen Bar Graph: segments
No Decompression zone (green) 13
No Deco Caution zone (yellow) 1
Decompression Warning zone (red) 4
Ascent Rate Indicator:
At depths of 60 ft (18 m) and shallower
segments feet/min. meters/min.
0 0 - 10 0 - 3
Normal zone (green) 1 11 - 15 3.5 - 4.5
Caution zone (yellow) 2 16 - 20 5 - 6
3 21 - 25 6.5 - 7.5
4 26 - 30 8 - 9
Too Fast zone (all flashing) 5 > 30 > 9
At depths deeper than 60 ft (18 m)
segments feet/min. meters/min.
0 0 - 20 0 - 6
Normal zone (green) 1 21 - 30 6.5 - 9
Caution zone (yellow) 2 31 - 40 9.5 - 12
3 41 - 50 12.5 - 15
4 51 - 60 15.5 - 18
Too Fast zone (all flashing) 5 > 60 > 18
Page 83
OPERATIONAL PERFORMANCE
ReACT Pro
SPECIFICATIONS (continued)
Function: Accuracy:
Depth ±1% of full scale
Timers 1 second per day
Dive Counter:
Displays Dives #1 to 50
Displays #1 for 51st dive of an activation period
Resets to Dive #1 upon reactivation after shutdown
Dive Log Mode:
Stores 50 most recent dives in memory for viewing
After 50 dives, the 51st dive is added, overwriting the oldest
Screens - Identifier, Nitrogen data, Oxygen data (if Nitrox)
Altitude:
Operational to 14,000 feet (4,267 meters) elevation
Sampling of ambient pressure every 30 minutes
Recalibration of depth readings at 1,000 feet (305 m) intervals beginning
at 2,000 feet (610) elevation
Power:
Battery 1 - 3 volt CR2450, Lithium
Shelf life Up to 5 years
Replacement User replaceable (yearly is recommended)
Life expectancy 150 dive hours (if 1 - 1 hour dive per activation period)
300 dive hours (if 2 or more 1 hour dives per period)
Activation:
Manual - push button (recommended)
Automatic - by water contact (if set On)
Cannot be activated deeper than 4 feet (1.5 m) - if Wet Activation is set
Off
Cannot be activated at elevations higher than 14,000 feet (4,267 m)
Shutoff:
Automatically shuts off if no dive is made within 2 hours after initial ac-
tivation.
Automatically shuts off 24 hours after the last dive (will reactivate if the
Wet Activation feature is set On and the contacts are wet).
Cannot be shut off manually.
PROGRAMMING (SETTING) FO2
Automatically set for 'Air' upon activation
Remains set for Air unless an FO2 numerical value is set
Nitrox set points from 21 to 50 (%)
If set for 21%, remains set for 21% until changed
If set for >21%, reverts to 50% 10 minutes after the dive (if the FO2
50% Default is set ON). The previous FO2 value set will be retained, if
the FO2 50% Default is set OFF.
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GLOSSARY
The following are diving terms to become familiar with. Some apply specifically to the ReACT Pro.
Air Dive - A dive conducted using air (approximately 21% oxygen & 79% nitrogen) as the breathing gas.
Algorithm - A step-by-step mathematical formula designed to accomplish a particular result (i.e. Dive Time Remaining in the ReACT Pro).
Altitude Dive - A dive made at an elevation above sea level (2,000+ ft. / 610+ m.) where a different set of no decompression tables is used .
Ascent Rate - The speed that a diver ascends toward the surface.
Ascent Rate Indicator - A graphic representation of vertical ascent rate (speed) displayed alongside a color coded indicator.
Boot - A protective rubber covering that surrounds an instrument module.
Bottom Time - The total time spent underwater during a dive between 5 feet (1.5 meters) on initial descent to 3 feet (1 meter) on final ascent.
BT - Abbreviation for Bottom Time (Elapsed Dive Time).
Caution Zone - The yellow section of a bar graph that gives visual warning of a divers proximity to projected limits.
Ceiling - See decompression ceiling.
Clean Dive - A dive preceded by 24 hours of no diving activity.
Competitive Dive - A dive conducted for profit or prize.
Compartment - A term applied to the hypothetical modeling of nitrogen absorption in the tissues (more accurate than the term tissue because dive
computer models have no direct relation to human tissues).
CNS - Abbreviation for the Central Nervous System of the body.
DCS - Abbreviation for decompression sickness (i.e., the bends).
DECO - Abbreviation for Decompression.
Decompression Ceiling - The shallowest depth a diver may reach upon ascent without risking DCS.
Decompression Stop - The depth(s) at which a diver must pause during ascent to allow absorbed nitrogen to escape naturally from the tissues.
Depth Sensor - An electromechanical device that converts water pressure into an electrical signal, that is converted to a visual depth display.
Diagnostic Mode - The first display seen on Genesis Scuba dive computers after initial activation during which time a selfcheck for internal faults and
battery voltage is performed.
Display - A visual readout of information.
Dive Time Remaining - A display of time allowed before a diver must surface based on no decompression status or oxygen saturation.
FO2 - The fraction (percent / 100) of oxygen (O2) in the breathing gas mixture.
Hydroglow - A Genesis Scuba term for an instrument backlight feature.
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ReACT Pro
GLOSSARY (continued)
LCD - Abbreviation for liquid crystal display, an easily viewed low voltage display usually found on dive computers
Log Mode - A computer display of previous dive information.
Maximum Depth - The deepest depth attained during a dive.
Mode - A specific set of functions in a dive computer.
Multi-level Dive - A type of dive profile where the diver spends various times at different shallower depths (opposite of a Square Wave dive profile).
NDL - Abbreviation for No Decompression Limit.
Nitrogen Bar Graph - A graphic display of simulated nitrogen absorption.
Nitrox - A nitrogen-oxygen breathing gas mixture that contains a higher fraction of oxygen than air.
Nitrox Dive - A dive conducted using nitrox (22 to 50 % O2) as the breathing gas.
No Decompression - Any part of a dive where the diver can surface without requiring a decompression stop.
No Decompression Limit - The amount of dive time remaining based on no-decompression status.
O2SAT - Abbreviation for oxygen saturation.
OTL - Abbreviation for oxygen tolerance limit.
Out of Range - The point at which a dive computer can no longer supply correct dive information.
Oxygen Tolerance Limit - The amount of dive time remaining based on exposure to elevated levels of oxygen.
Oxygen Toxicity - The adverse physiological affects of exposure to elevated levels of oxygen.
Partial Pressure - The proportion of the total pressure contributed by a single gas in a mixture of gases.
Plan Mode - An accessible sequential display of available dive times at 10 foot. (3 meter) intervals from 30 to 190 feet. (9 to 57 meters) used when dive
planning.
PO2 - Partial pressure of oxygen. The proportion of total pressure of a gas mixture contributed by oxygen.
Repetitive Dive - Any dive that takes place within 12 hours of a previous dive.
Safety Stop - A depth at which a diver may choose, but is not required, to pause during ascent to allow absorbed nitrogen to escape naturally from the tissues.
Square Wave Dive - A type of dive profile where the entire dive is spent at one depth between descent and ascent.
Symbol - a small pictorial representation of an operational mode or informational display.
Tissue - See Compartment.
Tissue Compartment - See Compartment.
Transducer - An electro-mechanical device in a dive computer that acts as a depth or pressure sensor.
Transition Period - The first 10 minutes of surface time after ascending above 3 feet (1 meter) from a dive.
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INSPECTION / SERVICE RECORD
SERIAL NUMBER
DATE OF PURCHASE
PURCHASED FROM (DEALER)
BELOW TO BE FILLED IN BY AN AUTHORIZED GENESIS SCUBA DEALER:
DATE INSPECTION / SERVICE PERFORMED DEALER / TECHNICIAN
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TAT
OTL
BT
MAX
FT
STOP
AM
PM
PO2
SAT
1a
ReACT Pro
FULL LCD DISPLAY
1b
6
5
AIR
NITROX
4
3
13
MAX
M FT
2a
14
2b
7
1c
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OTL
TAT
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STOP
2
PO2
AM
PM
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8
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10
11
1a. Nitrogen Bar Graph - (Green - No Deco)
1b. Nitrogen Bar Graph - (Yellow - No Deco Caution)
1c. Nitrogen Bar Graph - (Red - Deco)
2a. Ascent Rate Indicator - (Green - normal)
2b. Ascent Rate Indicator - (Yellow - caution)
2c. Ascent Rate Indicator - (Red - 'Too Fast')
3. Symbol - Dive Profile - Plan or Dive Mode
4. Symbol - Operating Mode - AIR or NITROX
5. Symbol - Wave - Surface Time or Dive Mode
6. Symbol - Log Mode
7. Symbol - Low Battery
8. Symbol - Time - BT/OTL/TAT/NDL
9. Symbol - Deco Stop Bar (below Wave)
10. Symbol - O2 Saturation or Deco Stop Time
11. Symbol - PO2 Level or AM/PM if 12 hour format
12. Symbol - Up Arrow (ascend)
13. Symbol - Current Depth or Max Depth
14. Control Buttons - LEFT and RIGHT
12
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Q
uestions o
r c
omments may be directed to
Authorized GENESIS Scuba dealers
are equipped to provide you with
the service you need including
technical service, repair and
returns. Should you need to return
a product under warranty, please
provide your GENESIS delaer with
the item along with your sales
receipt.
:
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©
2002
D
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. No. 12-2371
D
esign
2002
-r01 (11/13/02)
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