1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS. 5 2. WARNINGS, CAUTIONS, AND NOTES... 6 3. SUUNTO Vyper2 AT A GLANCE... 9 3.1. Navigating in the menus... 9 3.2. Button symbols and functions.. 9 4. GETTING STARTED WITH YOUR SUUNTO Vyper2.. 11 4.1. TIME mode settings.. 11 4.1.1. Setting the alarm... 11 4.1.2. Setting the time... 11 4.1.3. Setting the date... 11 4.1.4. Setting the units... 12 4.1.5. Setting the backlight... 12 4.1.6. Setting the tones... 12 4.2. AC water contacts... 12 4.3. Learning how to use your compass.. 13 4.3.1. Compass display... 13 4.3.2. Locking a bearing... 14 4.3.3. Compass settings... 14 5. BEFORE DIVING... 16 5.1. The Suunto RGBM/Deep Stop Algorithm.. 16 5.2. Emergency ascents.. 16 5.3. Dive computer limitations... 16 5.4. Nitrox... 17 5.5. Audible and visual alarms.. 17 5.6. Error conditions.. 18 5.7. DIVE mode settings.. 18 5.7.1. Setting the depth alarm.. 19 5.7.2. Setting the dive-time alarm... 19 5.7.3. Setting the nitrox values... 19 5.7.4. Setting the personal/altitude adjustments.. 20 5.7.5. Setting the sample rate... 20 5.7.6. Setting the Safety Stops/Deep Stops.. 20 5.7.7. Setting the RGBM values.. 21 5.8. Activation and pre-checks.. 21 5.8.1. Accessing DIVE mode... 21 5.8.2. DIVE mode activation... 21 5.8.3. Battery power indication... 22 5.8.4. Diving at altitude... 22 5.8.5. Personal adjustments... 23 5.9. Safety Stops... 24 5.9.1. Recommended Safety Stops... 24 5.9.2. Mandatory Safety Stops... 24 5.10. Deep stops... 25 6. DIVING.... 26 6.1. Diving in AIR mode (DIVEair).. 26 6.1.1. Basic dive data.. 26 6.1.2. Bookmark... 27 6.1.3. Ascent rate indicator... 27 6.1.4. Safety Stops... 27 6.1.5. Decompression dives... 27 6.2. Diving in NITROX mode (DIVEnitrox).. 30 6.2.1. Before diving in NITROX mode.. 30 6.2.2. Oxygen displays... 30 3
6.2.3. Oxygen limit fraction (OLF)... 6.2.4. Gas change and multiple breathing gas mixes. 6.3. Diving in GAUGE mode (DIVEgauge)... 7. AFTER DIVING.... 7.1. Surface interval.. 7.2. Dive numbering.. 7.3. Repetitive dive planning.. 7.4. Flying after diving... 7.5. PLAN mode... 7.5.1. Dive Planning mode (PLANnodec).. 7.5.2. Simulation Mode (PLANsimulator).. 7.6. MEMORY mode... 7.6.1. Dive logbook (MEMlogbook)... 7.6.2. Dive history (MEMhistory).. 7.7. Suunto Dive Manager (SDM)... 7.8. www.suuntosports.com and Suunto Diving World at www.suunto.com/diving... 8. CARE AND MAINTENANCE.. 8.1. Water contacts and buttons... 8.2. Care of your dive computer... 8.3. Maintenance... 8.4. Water resistance inspection... 8.5. Battery replacement.. 8.5.1. Battery kit... 8.5.2. Required tools... 8.5.3. Battery replacement procedure.. 9. TECHNICAL DATA... 9.1. Technical specifications... 9.2. RGBM.... 9.2.1. Suunto RGBM adaptive decompression.. 9.2.2. No-decompression limits... 9.2.3. Altitude diving... 9.3. Oxygen exposure... 10. INTELLECTUAL PROPERTY.. 10.1. Copyright... 10.2. Trademark... 10.3. Patent notice... 11. DISCLAIMERS.... 11.1. Users responsibility... 11.2. CE... 11.3. Limits of liability and ISO 9001 compliance.. 11.4. After sales service.. 12. WARRANTY... 13. DISPOSAL OF THE DEVICE.. GLOSSARY...
1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS
Suunto Vyper2 was designed to help you get the most out of your diving. After reading this manual and becoming familiar with the functions of your dive computer, you'll be ready to take the plunge into a whole new world of diving.
With integrated digital compass and gas switching, Suunto Vyper2 simplifies your diving experience because all the information you need relating to depth, time, decompression status, and direction is available on one easy-to-read screen. To get the most out of your Suunto Vyper2, please read this instruction manual carefully and make sure you understand the use, displays, and limitations of the instrument before using it. To make life easier, we've included a glossary of dive-specific terminology at the back of the manual.

SELECT Short

Select a submode Select and accept settings Activate compass in TIME and DIVE modes

SELECT Long

Toggle between alternative displays Change submode Increase values

Symbol

Button UP

Press Long

Main functions Enable gas switching in NITROX mode
Toggle between alternative displays Change submode Decrease values Enter Setting mode
4. GETTING STARTED WITH YOUR SUUNTO VYPER2
To get the most out of your Suunto Vyper2, take some time to personalize it and really make it YOUR computer. Set the correct time and date, as well as the alarms and tones, unit and backlight settings, then calibrate and test the compass function. Suunto Vyper2 is a very user-friendly dive computer, and you will quickly become familiar with its functions. Make absolutely sure that you know your computer and have it set up as you want it BEFORE getting into the water. 4.1. TIME mode settings The first thing you'll want to do with your Suunto Vyper2, is to set the TIME mode shortcuts: alarm, time, date, units, backlight, and tones. In this section, we look at how to do this. NOTE The display is illuminated by holding down the MODE button for more than 2 seconds.
Now that you know how to toggle between the shortcuts, you can start to set them. The following figure shows how to enter the TIME SETTINGS menu.
USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN ALARM, TIME, DATE, UNITS, BACKLIGHT AND TONES.
4.1.1. Setting the alarm The dive computer has a daily alarm function. When the daily alarm activates, the screen blinks and the alarm sounds for 24 seconds. Press any button to stop the alarm.
ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON.
4.1.2. Setting the time In the TIME SETTING mode, you are able to set the hour, minute, and second, as well as choose between 12 and 24 hour display.
4.1.3. Setting the date Use the DATE SETTING mode to set the year, month, and day. The day of the week is automatically calculated in accordance with the date.
4.1.4. Setting the units In the UNITS SETTING mode you can choose to have the units displayed in either the metric or imperial system - meters/feet, Celsius/Fahrenheit etc.
4.1.5. Setting the backlight Use the BACKLIGHT SETTING mode to turn the backlight on or off and to define how long it stays on for (5, 10, 20, 30, or 60 seconds). When the backlight is turned off, it does not illuminate when an alarm sounds.

Declination You can compensate for the difference between true north and magnetic north by adjusting the compass declination. The declination can be found, for example, from sea charts or topographic maps of the local area.
Calibration Because of changes in the surrounding magnetic field, the Suunto Vyper2 electronic compass occasionally needs to be re-calibrated. During the calibration process, the compass adjusts itself to the surrounding magnetic field. As a basic rule, you should calibrate the compass whenever it doesnt seem to operate properly, or after replacing the dive computer's battery. Strong electromagnetic fields, such as powerlines, stereo speakers, and magnets can affect the compass calibration. It is therefore advisable to calibrate the compass if your Suunto Vyper2 has been exposed to these fields. NOTE NOTE When traveling overseas, it is recommended that you recalibrate the compass at the new location before using it. Remember to hold the Suunto Vyper2 level during the calibration process.
To calibrate the compass:
HOLD THE DEVICE LEVEL AND SLOWLY ROTATE 360.
If the calibration fails several times in a row, it is possible that you are in an area with sources of magnetism, such as large metal objects, powerlines or electric appliances. Move to another location and try to calibrate the compass again. If the calibration continues to fail, contact an authorized Suunto service center.

5. BEFORE DIVING

Do not attempt to use the dive computer without reading this user's manual in its entirety, including all the warnings. Make sure that you fully understand the use, displays, and limitations of the instrument. If you have any questions about the manual or the Suunto Vyper2 please contact your Suunto representative before diving with the dive computer. Always remember that YOU ARE RESPONSIBLE FOR YOUR OWN SAFETY! When used properly, Suunto Vyper2 is an outstanding tool for assisting properly trained, certified divers in planning and executing sport dives. It is NOT A SUBSTITUTE FOR CERTIFIED SCUBA INSTRUCTION, including training in the principles of decompression. WARNING Diving with enriched air mixtures (nitrox) exposes you to risks that are different from those associated with diving with standard air. These risks are not obvious, and require training to understand and avoid. Risks include possible serious injury or death.
Do not attempt to dive with any gas mix other than standard air without first receiving certified training in this specialty. 5.1. The Suunto RGBM/Deep Stop Algorithm Suuntos Reduced Gradient Bubble Model (RGBM), utilized in the Suunto Vyper2, predicts both dissolved and free gas in the blood and tissues of divers. It is a significant advance on the classic Haldane models, which do not predict free gas. The advantage of Suunto RGBM is additional safety through its ability to adapt to a variety of situations and dive profiles. The Suunto uses traditional recommended safety stops as well as deep stops.

YOU ARE ADVISED TO MAKE A DEEPSTOP AT 18 M. THE SECOND INDICATOR SHOWS THAT YOU HAVE 110 SECONDS LEFT OF YOUR DEEPSTOP.
In order to optimize the response to different increased risk situations, an additional category of stop, referred to as a Mandatory Safety Stop, has been introduced. The combination of stop types depends on the user settings and the specific dive situation. To get the most from the RGBM safety benefits, refer to Section 9.2. RGBM. 5.2. Emergency ascents In the unlikely event that the dive computer malfunctions during a dive, follow the emergency procedures provided by your certified dive training agency or, alternatively, follow these steps: 1. Assess the situation calmly and then move promptly to less than 18 m/60 ft. 2. At 18 m/60 ft, slow down your ascent rate to 10 m/33 ft per minute and move to a depth between 3 and 6 m/10 and 20 ft. 3. Stay there for as long as your air supply will safely allow. After reaching the surface, do not dive for at least 24 hours. 5.3. Dive computer limitations While the dive computer's calculations are based on current decompression research and technology, it is important to realize that the computer cannot monitor the actual physiological functions of an individual diver. All decompression schedules currently known to the authors, including the U.S. Navy Tables, are based on theoretical mathematical models, which are intended to serve as a guide to reduce the probability of decompression illness. 16
5.4. Nitrox Diving with nitrox provides you with an opportunity to increase bottom times or reduce the risk of decompression illness by reducing the nitrogen content in the gas mix. However, when the gas mix is altered, the oxygen content of the mix is generally increased. This increase exposes the diver to an oxygen toxicity risk not usually considered in recreational diving. In order to manage this risk, the dive computer tracks the time and intensity of the oxygen exposure and provides the diver with information to adjust the dive plan in order to maintain oxygen exposure within reasonably safe limits. In addition to the physiological effects of enriched air on the body, there are operational considerations to be addressed when handling altered breathing mixes. Elevated concentrations of oxygen present a fire or explosion hazard. Consult the manufacturer of your equipment to check its compatibility with nitrox. 5.5. Audible and visual alarms The dive computer features audible and visual alarms that advise when important limits are approached or that prompt you to acknowledge preset alarms. The table below describes the different alarms and their meanings. Table 5.1. Audible and visual alarm types Alarm type Short single beep

NITROX DIVE MODE ACTIVATION. MAXIMUM OPERATIONAL DEPTH BASED ON SET O2% (21%) AND PO 2 (1.4 BAR) IS 56.7 M.
If set to NITROX mode, the Suunto Vyper2 will additionally show on the alternative display: the oxygen percentage, labeled O2% the set oxygen partial pressure limit, labeled PO2 the current oxygen toxicity exposure, labeled OLF maximum depth current time water temperature dive time
DOWN BUTTON TOGGLES BETWEEN O2, MAXIMUM DEPTH AND CURRENT TIME.
UP BUTTON TOGGLES BETWEEN PO2, OLF, DIVE TIME AND WATER TEMPERATURE.
6.2.3. Oxygen limit fraction (OLF) If set to NITROX mode, in addition to tracking the diver's exposure to nitrogen, the instrument tracks the exposure to oxygen. These calculations are treated as entirely separate functions. The dive computer calculates separately for Central Nervous System oxygen toxicity (CNS) and Pulmonary Oxygen toxicity, the latter measured by the addition of Oxygen Toxicity Units (OTU). Both fractions are scaled so that the maximum tolerated exposure for each is expressed as 100%. The Oxygen Limit Fraction (OLF) displays only the value of the higher of the two calculations. The oxygen toxicity calculations are based on the factors listed in Section 9.3 Oxygen exposure. 6.2.4. Gas change and multiple breathing gas mixes The Suunto Vyper2 allows gas changes to enabled gas mixes during the dive. Gas changes are made by following the procedure below:
CHANGING GAS MIX. SCROLL THROUGH ENABLED MIXES BY PRESSING THE UP OR DOWN BUTTONS. SELECT NEW MIX BY PRESSING THE SELECT BUTTON.
Mix number, O2%, and PO2 for the mixes are shown when scrolling. If the set PO2 limit is exceeded , it will be shown with the PO2 value blinking. The dive computer does not allow you to change to a gas whose set PO2 is exceeded. In such a case, the mix is shown but cannot be selected. If no button is pressed in 15 seconds, the dive computer will go back to the dive display without changing the gas mix. Upon ascent, the computer prompts you to change gas when the PO2 level you have set for the next mix allows a gas change. The prompt is an audible 3 beeps and the current O2 mix starts to blink.
6.3. Diving in GAUGE mode (DIVEgauge) If set to GAUGE mode, the dive computer can be used as a bottom timer. In the GAUGE mode, the total dive time is always displayed in minutes in the lower right corner. In addition, a Dive Timer in the center window displays time in minutes and seconds. The center window Dive Timer is activated at the start of the dive and it can be reset during the dive and used as a stopwatch by pressing the SELECT button.

7.4. Flying after diving The no-fly time is shown in the center window next to the airplane image. Flying or traveling to a higher altitude should be avoided at any time when the computer is counting down the no-fly time. The no-fly time is always at least 12 hours, or equivalent to the so-called desaturation time (if longer than 12 hours). For desaturation times lower than 70 minutes, no no-fly time is given. In the Permanent Error mode and GAUGE mode the no-fly time is 48 hours. The Divers Alert Network (DAN) recommends the following on no-fly times: A minimum surface interval of 12 hours would be required in order to be reasonably assured a diver will remain symptom free upon ascent to altitude in a commercial jetliner (altitude up to 2,400 m/8,000 ft) 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 interval beyond 12 hours before a flight. Further, the Undersea and Hyperbaric Medical Society (UHMS) suggests divers using standard air cylinders and exhibiting no symptoms of decompression illness wait 24 hours after their last dive to fly in an aircraft with cabin pressure up to 2,400 m/8,000 ft. The only two exceptions to this recommendation are: If a diver has less than 2 hours total accumulated dive time in the last 48 hours, 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 Suunto recommends that flying is avoided until all the DAN and UHMS guidelines, as well as the dive computers no-fly conditions, are satisfied 7.5. PLAN mode The PLAN mode includes a dive planner (PLANnodec) and simulation mode (PLANsimulator).
7.5.1. Dive Planning mode (PLANnodec) The Dive Planning mode displays no-decompression times for a new dive, taking into account the effects of previous dives. When entering the PLANnodec mode, the display first briefly shows the remaining desaturation time before going into plan mode. By pressing the UP/DOWN buttons, you can scroll the no-decompression limits in 3 m/10 ft increments ending at 45 m/150 ft. No-decompression limits longer than 99min are displayed as.
WHEN ENTERING THE MEMPLAN MODE THE DISPLAY FIRST BRIEFLY SHOWS TISSUE LOADING, THE REMAINING DESATURATION TIME BEFORE GOING INTO PLAN MODE. USE UP AND DOWN BUTTONS TO SCROLL DIFFERENT NO-DECOMPRESSION LIMITS. NO-DECOMPRESSION LIMITS LONGER THAN 99 MINUTES ARE DISPLAYED AS.
The Planning mode takes into account the following information from previous dives: any calculated residual nitrogen all dive history for the past four days The no-decompression times given for different depths will therefore be shorter than before your first fresh dive. You can exit the planning mode by pressing the MODE button. NOTE The Planning mode is disabled in GAUGE mode and in Error mode (see Section 5.6. Error conditions). The planning mode calculates nodecompression times for MIX1 only. If an additional mix is enabled in the NITROX mode, it does not affect the calculations in PLANNoDec mode.

7.6.2. Dive history (MEMhistory) The Dive History is a summary of all the dives recorded by the dive computer. The following information will be shown on the display:
DIVE HISTORY DISPLAY. TOTAL NUMBER OF DIVES, DIVE HOURS AND MAXIMUM DEPTH.
The Dive History Memory can hold a maximum of 999 dives and 999 diving hours. When these maximum values are reached, the counters will start again from zero. NOTE The maximum depth can be reset to 0.0 m/0 ft using the PC-Interface unit and the downloadable Suunto Dive Manager software.
7.7. Suunto Dive Manager (SDM) Suunto Dive Manager (SDM) is optional PC software that greatly enhances the functionality of your Suunto Vyper2. With the SDM software, you can download dive data from your dive computer to your PC. You can then view and organize all the data recorded with your Suunto Vyper2. You can also plan dives, print copies of your dive profiles and upload your dive logs to share with your friends at SuuntoSports.com. You can always download the latest version of Suunto Dive Manager from www.suunto.com. Please check for updates regularly as new features are constantly being developed. The following data is transferred to your PC: depth profile of the dive dive time preceding surface interval time dive number dive start time (year, month, day and time) dive computer settings 37
oxygen percentage settings and maximum OLF (in NITROX mode) tissue calculation data real-time water temperature additional dive information (e.g. SLOW and Mandatory Safety Stop violations, Diver Attention Symbol, Bookmark, Surfaced Mark, Decompression Stop Mark, Ceiling Error Mark, Gas Change) dive computer serial number personal information (30 characters) Using SDM, you are able to enter setup options such as: input a personal, 30-character field into the Suunto Vyper2 reset the Dive Historys maximum depth to zero It is also possible to manually add comments, multimedia and other personal information to the PC-based dive data files. 7.8. www.suuntosports.com and Suunto Diving World at www.suunto.com/diving When you have dived and transferred your dive data to your Suunto Dive Manager, you can share your best experiences with other diving enthusiasts at SuuntoSports.com. It's a free and open Internet community where you can compare your underwater experiences with other Suunto users and learn from each other. SuuntoSports.com includes three sections. In My Suunto you can register your dive computer and manage your membership profile. The section also contains a personal event calendar. The Communities section is meeting a place for smaller groups of SuuntoSports.com members. Here you can create and manage your own communities and search for others. All communities have a home page that lists the latest group activities. Community members can also use group-specific bulletin boards and calendars, create their own link lists and group activities. All registered SuuntoSports.com users automatically become members of the World of Suunto Sports community. The Sport forums include sport-specific news, bulletin boards, event calendars, ranking lists and discussions. You can also exchange experiences and read travel reports written by other members. To learn more about SuuntoSports.coms functions and activities, visit the site, try them and, if necessary, use the site Help. The Help is available on the right side of the bar that divides the screen.

8. CARE AND MAINTENANCE

The Suunto Vyper 2 dive computer is a sophisticated precision instrument. Though designed to withstand the rigors of scuba diving, you must handle your Suunto Vyper 2 with care, and follow the advice below on how to maximize its service life. 8.1. Water contacts and buttons Contamination or dirt on the water contacts/connector or buttons may prevent the automatic activation of the DIVE mode and cause problems during data transfer. Therefore, it is important that the water contacts and push buttons are kept clean. If the water contacts of the instrument are active (AC-text remains on the display) or the DIVE mode activates on its own, the reason is probably contamination or invisible marine growth that may create an unwanted electric current between the contacts. It is important that the dive computer is carefully washed in fresh water after the day's diving is completed. The contacts can be cleaned with fresh water and, if necessary, a mild detergent and a soft brush. 8.2. Care of your dive computer NEVER try to open the case of the dive computer Have your dive computer serviced every two years or after 200 dives (whichever comes first) by an authorized Suunto representative. This service will include a general operational check, replacement of the battery, and a water resistance check. The service requires special tools and training, so do not attempt to carry out any service that you are not competent to perform If moisture appears inside the case, have the instrument checked immediately by your Suunto representative If you detect scratches, cracks or other such flaws on the display that may impair its durability, have it replaced immediately by your Suunto representative Check the strap and the buckle for flaws. If needed, have them replaced by your Suunto representative Wash and rinse the unit in fresh water after every use Protect the unit from shock, extreme heat, direct sunlight, and chemical corrosion. The dive computer cannot withstand the impact of heavy objects like scuba cylinders, nor chemicals like gasoline, cleaning solvents, aerosol sprays, adhesive agents, paint, acetone, alcohol etc. Chemical reactions with such agents will damage seals, the case, and the finish Store your dive computer in a dry place when you are not using it The dive computer displays a battery symbol as a warning when the power gets too low. When this happens, the instrument should not be used until the battery has been replaced. Also refer to Section 5.8. Activation and pre-checks Do not fasten the strap of your dive computer too tightly. You should be able to insert your finger between the strap and your wrist 8.3. Maintenance If left without care for an extended period, a thin film, often invisible to the naked eye, will cover the unit. Much like the build-up on the glass of an aquarium, this film is the result of organic contaminants found in both salt and fresh water. Suntan oil, silicone spray and grease will speed up this process. As a result of this build-up, moisture will be trapped next to the water contacts and will prevent your Suunto Vyper 2 from operating properly. The water contacts can be cleaned with a small brush (e.g. toothbrush). IMPORTANT: Your Suunto Vyper 2 should be soaked, then thoroughly rinsed with fresh water and dried with a soft towel after each dive. Make sure that all salt crystals and sand particles have been flushed out. Check the display for possible moisture or water, and do not use the Suunto Vyper 2 if you detect any moisture or water inside.

CAUTION

Do not use compressed air to blow water off the unit. Do not use solvents or other cleaning fluids that might cause damage. Do not test or use the dive computer in pressurized air.
8.4. Water resistance inspection The water resistance of the unit must be checked after replacing the battery or after other service operations. The check requires special equipment and training. You must frequently check the display for any sign of leaks. If you find moisture inside your dive computer, there is a leak. A leak must be corrected without delay, as moisture will seriously damage the unit, even beyond repair. Suunto does not take any responsibility for damage caused by moisture in the dive computer, if the instructions of this manual have not been carefully followed. In the event of a leak, immediately take the dive computer to an authorized Suunto representative. 8.5. Battery replacement NOTE It is advisable to contact an authorized Suunto representative for battery replacement. It is imperative that the change is made in a proper manner to avoid any leakage of water into the battery compartment or computer. Defects caused by improper battery installation are not covered by the warranty. When the battery is changed, all nitrogen and oxygen uptake data is lost. Therefore, the no-fly time shown by the computer should have reached zero or you must wait for 48 hours, or preferably up to 100 hours, before you dive again.

CAUTION CAUTION

All history and profile data, as well as the altitude, personal, and alarm settings, will remain in the dive computer memory after the battery change. However, the clock time and time alarm settings are lost. In the NITROX Mode, the nitrox settings also revert back to default settings (MIX% O2, 1.4 bar PO2, MIX2 OFF). When working with the battery compartment, cleanliness is extremely important. Even the smallest dirt particles may cause a leakage when you dive. 8.5.1. Battery kit The battery kit includes a 3.0 V coin type lithium cell battery and a lubricated Oring. When handling the battery do not make contact with both of the poles at the same time. Do not touch the surfaces of the battery with your bare fi ngers. 8.5.2. Required tools A fl at 1.5 mm screwdriver or a special tool for spring bars (K5857). Soft cloth for cleaning. Needlenose pliers or small screwdriver for turning securing ring. 8.5.3. Battery replacement procedure The battery and the buzzer are located in the back of the instrument in a separate compartment. To change the battery, follow the procedure below: 1. Remove the computer from the console or boot. Wrist model: Pull off the boot. Remove it first from the front end with the longer part of the strap. 40

9.2. RGBM The Suunto Reduced Gradient Bubble Model (RGBM) is a modern algorithm for predicting both dissolved and free gas in the tissues and blood of divers. It was developed in cooperation between Suunto and Bruce R. Wienke BSc, MSc, PhD. It is based on both laboratory experiments and diving data, including data from DAN. It is a significant advance on the classical Haldane models, which do not predict free gas (microbubbles). The advantage of Suunto RGBM is additional safety through its ability to adapt to a wide variety of situations. Suunto RGBM addresses a number of diving circumstances outside the range of dissolved-gas-only models by: Monitoring continuous multiday diving Computing closely spaced repetitive diving Reacting to a dive deeper than the previous dive Adapting to rapid ascents which produce high microbubble (silent-bubble) build-up Incorporating consistency with real physical laws for gas kinetics 9.2.1. Suunto RGBM adaptive decompression The Suunto RGBM algorithm adapts its predictions of both the effects of microbubble build-up and adverse dive profiles in the current dive series. It also changes these calculations according to the personal adjustment you select. The pattern and speed of decompression at the surface is adjusted according to microbubble influence. On repetitive dives, adjustment may also be applied to the maximum allowable nitrogen overpressure in each theoretical tissue group. Depending on the circumstances, Suunto RGBM will adapt the decompression obligations by doing any or all of the following: Reducing No-decompression Stop dive times Adding Mandatory Safety Stops Increasing Decompression Stop times Advising an extended surface interval (Diver Attention symbol)
Diver Attention Symbol Advice to Extend Surface Interval Some patterns of diving cumulatively add a higher risk of DCI; for example, dives with short surface intervals, repetitive dives deeper than earlier ones, multiple ascents, and substantial multiday diving. When this is detected, in addition to adapting the decompression algorithm, the Suunto RGBM model will in some circumstances also advise, with the Diver Attention Symbol, that you extend your surface interval. 9.2.2. No-decompression limits The no-decompression limits displayed by the dive computer for the first dive to a single depth (see Table 9.1, No-decompression time limits for various depths (m) and Table 9.2, No-decompression time limits for various depths (ft).), are slightly more conservative than those permitted by the U.S. Navy tables. Table 9.1. No-decompression time limits for various depths (m) No-decompression time limits (mins) for various depths (m) for the first dive of a series Depth (m) 45 Personal Mode / Altitude Mode P0/A0 -P0/AP0/AP1/AP1/AP1/AP2/AP2/AP2/A4 3

11. DISCLAIMERS

11.1. Users responsibility This instrument is intended for recreational use only. Suunto Vyper2 must not be used for obtaining measurements that require professional or industrial precision. 11.2. CE The CE mark is used to mark conformity with the European Union EMC directive 89/336/EEC FIOH, Laajaniityntie 1, FIN-01620 Vantaa, Finland, notified body no.0430, has EC typeexamined this type of personal protective equipment. EN 250 Respiratory equipment - Open circuit self-contained compressed air diving apparatus Requirements, testing, marking. EN 13319 Diving accessories Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods is a European diving depth gauge standard. The Suunto Vyper2 is designed to comply with this standard. 11.3. Limits of liability and ISO 9001 compliance Suunto Oy does not assume any responsibility for losses or claims by third parties, which may arise through the use of this device. Due to continuous product development, the Suunto Vyper2 is subject to change without notice. ISO 9001 Suunto Oys Quality Assurance System is certified by Det Norske Veritas to be in accordance with ISO 9001 in all Suunto Oy's operations (Quality Certificate No. 96-HELAQ-220). 11.4. After sales service If a claim under warranty appears to be necessary, return the product, freight prepaid, to your Suunto representative, who is responsible for having your product repaired or replaced. Depending on the requirements in your country, include your name, address, proof of purchase and/or Warranty card, which can be found at the back of this manual. The claim will be honored and the product repaired or replaced at no charge and returned in what your Suunto representative determines a reasonable amount of time, provided that all necessary parts are in stock. All repairs that are not covered under the terms of this warranty will be made at the owner's expense. This warranty is non-transferable from the original owner. You can locate your local Suunto representative at www.suunto.com.

12. WARRANTY

NOTE Warranty arrangements vary from country to country. The dive computer packaging contains information regarding the warranty benefits and requirements applicable to your purchase.
This Suunto dive computer is warranted against defects in workmanship and materials for a period of two years after purchase to the original owner subject to and in accordance with the terms and conditions set forth below: The dive computer should be serviced and repaired only by an authorized Suunto representative. This warranty does not cover damage to the product resulting from improper usage, improper maintenance, neglect of care, alteration or unauthorized repair. This warranty will automatically become void if proper preventive maintenance procedures have not been followed as outlined in the use and care instructions for this product. All implied warranties, including but not limited to the implied warranties of merchantability and fitness for a particular purpose, are limited from the date of purchase and in scope to the warranties expressed herein. Suunto shall not be liable for loss of use of the product or other incidental or consequential costs, expenses or damage incurred by the purchase. All warranties not stated herein are expressly disclaimed. Some states do not allow the exclusion or limitation of implied warranties of consequential damages, so the above exclusions or limitations may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state. This warranty does not cover any representation or warranty made by representatives beyond the provisions of this warranty. No Suunto representative is authorized to make any modifications to this warranty or to make any additional warranty. Battery replacement is not covered by this warranty. This User's Guide should be kept with your dive computer. Suunto's dive computers and wristop computers can be registered online at www.suunto.com. Registering your unit makes it quicker and easier for us to help you if you ever need to send your product for servicing, or if you need information about using your unit from our Global Help Desk.

CNS CNS% Compartment DAN DCI Decompression Decompression range Decompression illness

Dive series

Dive time EAD EAN Enriched air nitrox
Equivalent air depth Floor Half time

Multi level dive

Nitrox NOAA No decompression time No decompression dive
NO DEC TIME OEA = EAN = EANx OLF OTU Oxygen tolerance unit Oxygen limit fraction O2% Oxygen partial pressure
Abbreviation for no decompression time limit. Abbreviations for oxygen enriched air nitrox. Abbreviation for oxygen limit fraction. Abbreviation for oxygen tolerance unit. Used to measure the whole-body-toxicity. A term used by Suunto for the values displayed in the oxygen toxicity bar graph. The value is either the CNS% or the OTU%. Oxygen percentage or oxygen fraction in the breathing gas. Standard air has 21% oxygen. Limits the maximum depth to which the nitrox mixture can be safely used. The maximum partial pressure limit for enriched air diving is 1.4 bar. The contingency partial pressure limit is 1.6 bar. Dives beyond this limit risk immediate oxygen toxicity. Abbreviation for oxygen partial pressure. Abbreviation for Reduced Gradient Bubble Model. Modern algorithm for tracking both dissolved and free gas in divers. Any dive whose decompression time limits are affected by residual nitrogen absorbed during previous dives. The amount of excess nitrogen remaining in a diver after one or more dives. Abbreviation for surface interval time. Elapsed time between surfacing from a dive and beginning a descent for the subsequent repetitive dive. Theoretical concept used to model bodily tissues for the construction of decompression tables or calculations. Another form of oxygen toxicity, which is caused by prolonged exposure to high oxygen partial pressures. The most common symptoms are irritation in the lungs, a burning sensation in the chest, coughing and reduction of the vital capacity. Also called Pulmonary Oxygen Toxicity. See also OTU.
PO2 RGBM Reduced Gradient Bubble Model Repetitive dive Residual nitrogen SURF TIME Surface interval time Tissue group Whole-body toxicity
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