ONLY DIVERS TRAINED IN THE PROPER USE OF SCUBA EQUIPMENT SHOULD USE THE DIVE COMPUTER! No dive computer can replace the need for proper dive training. Insufficient or improper training may cause diver to commit errors that may lead to serious injury or death.
NOT FOR PROFESSIONAL USE! SUUNTO dive computers are intended for recreational use only. The demands of commercial or professional diving often expose the diver to depths and prolonged exposures including multiday exposures that tend to increase the risk of decompression sickness. Therefore, SUUNTO specifically recommends that the device be not used for commercial or other severe diving activity.
PERFORM PRECHECKS! Always activate and check the device before diving in order to ensure that all LCD segments are completely displayed, that the device has not run out of battery power, and that the oxygen, altitude and personal adjustments are correct.
NO PROCEDURE, DIVE COMPUTER OR DIVE TABLE WILL PREVENT THE POSSIBILITY OF DECOMPRESSION SICKNESS (DCS) OR OXYGEN TOXICITY! You must understand and accept that there is no procedure, dive computer or dive table that will totally prevent the possibility of a decompression accident or that oxygen toxicity will not occur, even within accepted limits. For example, the individual physiological make up can vary within an individual from day to day. The dive computer cannot account for these variations. As an added measure of safety, you should consult a physician regarding your fitness before diving with the dive computer. Decompression sickness can cause serious injury or death. DIVING WITH ENRICHED AIR MIXTURES (NITROX) EXPOSES THE USER TO RISKS 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.
USE BACK-UP INSTRUMENTS! Make sure that you use back-up instrumentation including a depth gauge, submersible pressure gauge, timer or watch, and have access to decompression tables whenever diving with the dive computer.
THE DIVE COMPUTER SHOULD NEVER BE TRADED OR SHARED BETWEEN USERS WHILE IT IS IN OPERATION! Its information will not apply to someone who has not been wearing it throughout a dive or sequence of repetitive dives. Its dive profiles must match that of the user. If it is left on the surface during any dive, it will give inaccurate information for subsequent dives. No dive computer can take into account dives made without the computer. Thus any diving activity 48 hours prior to initial use of the computer may give misleading information, which may substantially increase the risk of decompression sickness and must be avoided.

SET THE CORRECT ALTITUDE ADJUSTMENT MODE! When diving at altitudes greater than 300 m [1000 ft] the Altitude Adjustment feature must be correctly selected in order for the computer to calculate no-decompression status. Failure to properly select the Altitude Adjustment Mode correctly will result in erroneous data and can greatly increase the risk of DCS.
THE DIVE COMPUTER IS NOT INTENDED FOR USE AT ALTITUDES GREATER THAN 3000 m [10000 ft]! Diving at altitudes above this limit may significantly increase the risk of DCS.
SET THE CORRECT PERSONAL ADJUSTMENT MODE! The diver should use this option to make the calculations more conservative, whenever it is believed that factors, which tend to increase the possibility of DCS exist. Failure to properly select the Personal Adjustment Mode correctly will result in erroneous data and can greatly increase the risk of DCS.

CAUTION!

ENSURE THE WATER RESISTANCE OF THE DEVICE! Always check the water resistance of the battery compartment when replacing the battery. Moisture inside the device or battery compartment will seriously damage the unit. Only an authorized SUUNTO dealer or distributor should do service activities.

1.1.1. 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, STEP 1: STEP 2: STEP 3: Assess the situation calmly and then move promptly to less than 18 m [60 ft]. At 18 m [60 ft], slow down your ascent rate to 10 m/min [33 ft/min] and move to a depth between 3 and 6 meters [10 to 20 ft]. Stay there as long as your air supply will safely allow. After reaching the surface stay out of the water at least 24 hours.
1.1.2. Dive Computer Limitations
While the dive computer is based on current decompression research and technology, you must 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 a theoretical mathematical models, which are intended to serve as a guide to reduce the probability of decompression sickness.
1.1.3. Enriched Air and Safety
Diving with enriched air provides the diver an opportunity to reduce the risk of decompression sickness by reducing the nitrogen content in the breathing 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 and you are advised to consult the manufacturer of the diving equipment you will be exposing to enriched air with regard to limitations.

Fig. 2.4 Active water contacts are indicated by the text AC.
3. DIVING WITH THE DIVE COMPUTER
This section contains instructions on how to operate the dive computer and interpret its displays. You will find that this dive computer is easy to use and read. Each display shows only the data relevant to that specific diving situation. The instrument's dive functions are operated in the Dive Mode.
CEILING S L O AVGPO2 MAX W

NO O2%SURF

STOP ASC TIME

QUIT OK SELECT

OLF C B T F C

NO DEC TIME

OPTIONS

DIVE TIME

3.1. BEFORE DIVING 3.1.1. Activation and Prechecks
The dive computer will activate, if submerged deeper than 0.5 m [1.5 ft]. However, it is necessary to turn on the Dive Mode before diving to check the altitude and personal adjustment settings, battery warning, oxygen adjustments, etc. Press the SMART (On) button to activate the instrument. After activation all display elements will turn on showing mostly figure 8's and graphical elements (Fig. 3.1). A few seconds later the battery power indicator is shown and the backlight and the buzzer are activated (Fig. 3.2 display a, b, c or d depending on the battery voltage). If set to AIR Mode (default) the screen will enter the Surface Mode (Fig. 3.4). If set to GAUGE Mode the text GAUGE is shown (Fig. 3.3) and if set to NITROX Mode the essential oxygen parameters are shown with the text NITROX (Fig. 3.20) before the Surface Mode.
Fig. 3.1 Startup I. All segments shown.
Fig. 3.2 Startup II. The battery power indicator.
At this time, perform your precheck making sure that: the instrument operates in the correct mode and provides a complete display the low battery indicator is not on the altitude and personal adjustment settings are correct (AIR and NITROX Modes) the instrument displays correct units the instrument displays correct temperature and depth (0.0 m [0 ft]) the buzzer beeps.
Fig. 3.3 Startup III. The Gauge Mode.
And if set to NITROX mode, make sure that: the oxygen percentage is adjusted according to the measured enriched air blend in your cylinder the partial pressure limit of oxygen is set correctly.

Fig. 3.11 Ascent rate indicator. Three segments.

MANDATORY SAFETY STOP

When the maximum allowed ascent rate is exceeded continuously the dive computer highly recommends an extra-prolonged Mandatory Safety Stop in the range of 3 m - 6 m [10 ft - 20 ft] for the calculated period. In this case the STOP sign will appear in the display and when you reach the depth zone between 6 m to 3 m [20 ft to 10] also the CEILING label, depth and the calculated Safety Stop time appear in the display. You should wait until the Mandatory Safety Stop warning disappears (Fig. 3.14).
Fig. 3.12 Ascent rate indicator. Four segments.
The Mandatory Safety Stop time always includes the three-minute Recommended Safety Stop time. The total length of the Mandatory Safety Stop time depends on the seriousness of the ascent rate violation. You must not ascend shallower than 3 m [10 ft] with the Mandatory Safety Stop warning on. If you ascend above the Mandatory Safety Stop ceiling, a downward pointing arrow will appear and a continuous beeping starts (Fig. 3.15). You should immediately descend to or below the Mandatory Safety Stop ceiling depth. However, if you correct the situation whenever during that dive there are no affects to the tissue calculations. If you continue to violate the Mandatory Safety Stop, the tissue calculation model is affected and the dive computer shortens the available no-decompression time for your next dive. In this situation it is recommended to prolong your surface interval time before your next dive.
3.2.4. Ascent Rate Indicator
The ascent rate is shown graphically along the right side of the display as follows:
TABLE 3.2 ASCENT RATE INDICATOR
Ascent Rate Indicator The equivalent ascent speed Example in Fig. 3.8 3.9 3.10 3.11
No segments One segment Two segments Three segments Four segments
Below 4 m/min [13 ft/min] 4 - 6 m/min [13 - 20 ft/min] 6 - 8 m/min [20 - 26 ft/min] 8 - 10 m/min [26 - 33 ft/min]
10 - 12 m/min [33 - 39 ft/min] 3.12
Above 12 m/min [39 ft/min] or 3.13 Four segments, the SLOW segment, blinking continuously above 10 m/min depth reading, the STOP [33 ft/min] sign and an audible alarm

BEE BEE EEP P

S L O MAX W
When the maximum allowed ascent rate is exceeded the fifth SLOW warning segment and the STOP sign appear and the depth reading starts to blink indicating that the maximum ascent rate has been exceeded continuously or that the ascent rate is above the allowed maximum rate. Whenever the SLOW warning segment and the STOP sign appear (Fig. 3.13), you should immediately slow down your ascent. When you reach the depth zone between 6 m to 3 m [20 ft to 10 ft] you are advised to make a Mandatory Safety Stop with the STOP and CEILING depth signs and wait until the warning disappears (Fig. 3.14). You must not ascend shallower than 3 m [10 ft] with the Mandatory Safety Stop warning on.

3.3. DIVING WITH ENRICHED AIR NITROX 3.3.1. Before Diving
This dive computer can be used for diving with standard air only (AIR Mode) or it can be set for diving with Enriched Air Nitrox (EANx) (NITROX Mode). If you are educated for nitrox diving and you plan to make nitrox dives, it is recommended that you set the dive computer permanently to its NITROX Mode (see chapter 4.3. "Set Modes"). If set to the NITROX Mode, the correct oxygen percentage of the gas in your cylinder must always be entered into the computer to ensure correct nitrogen and oxygen calculations. The dive computer adjusts its mathematical nitrogen and oxygen calculation models according to the entered O2% and PO2 values. Calculations based on enriched air result in longer no-decompression times, shallower maximum depths and dive plan information with regard to oxygen exposure.
DO NOT DIVE WITH A CYLINDER OF ENRICHED AIR IF YOU HAVE NOT PERSONALLY VERIFIED ITS CONTENTS AND ENTERED THE ANALYSIS VALUE INTO YOUR DIVE COMPUTER! Failure to verify cylinder contents and enter the appropriate O2% into your dive computer will result in incorrect dive planning information.
THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PERCENTAGE VALUES OF OXYGEN CONCENTRATION. DO NOT ROUND UP FRACTIONAL PERCENTAGES! For example, 31.8% oxygen should be entered as 31%. Rounding up will cause nitrogen percentages to be understated and will affect decompression calculations, which could result in dive planning with an increased risk of decompression sickness. If there is a desire to adjust the computer to provide more conservative calculations, use the personal adjustment feature to affect decompression calculations or reduce the PO2 setting to affect oxygen exposure tracking.

DEFAULT NITROX SETTINGS

Fig. 3.20 Nitrox display. The maximum depth based on set O2% (21%) and PO2 (1.4 bar) is 54.1 m [177 ft].
In the NITROX Mode, when set to standard air (21% O2), the instrument can be used as an air dive computer. It remains in this air mode until the O2% setting is adjusted to any other percentage of oxygen (22% - 50%). NOTE! The computer will automatically revert to the air (21% O2) setting when a new dive series is started, if it is not set to any other mix during the last two hours. When the oxygen percentage is set for air, the computer will retain this setting. Manually entered values for oxygen percentage are retained for about two hours after the setting if a dive series has not started. In case a dive series is started, the set value is retained until a new dive series is started or a new value is entered manually. The default setting for maximum oxygen partial pressure is 1.4 bar, however you are able to set it between the range of 1.2 - 1.6 bar.

Fig. 3.21 Surface display in the NITROX Mode.

3.3.2. Oxygen Displays

If set to NITROX Mode the NITROX display, with all labeled oxygen information and the label NITROX, is shown after activation and before the Dive Planning mode. The NITROX display shows (Fig. 3.20): the oxygen percentage labeled with O2% is shown in the left side of the center window the set oxygen partial pressure limit labeled with PO2 is shown in the upper right display the maximum allowed depth based on the set oxygen percentage and partial pressure limit the current oxygen toxicity exposure shown with an Oxygen Limit Fraction (OLF) bar graph along the left side of the display (instead of the CBT).
Fig. 3.22 Diving in the NITROX Mode. The O2% is set to 32%.
In the DIVE Modes, the oxygen percentage labeled with O2% and the current oxygen toxicity exposure shown with an Oxygen Limit Fraction (OLF) bar graph are shown (Fig. 3.21 and 3.22). During a dive, the oxygen partial pressure labeled with PO2 is also shown instead of the maximum depth in the upper right display, if the partial pressure is greater than 1.4 bar or the set value (Fig. 3.23).
Fig. 3.23 Oxygen partial pressure and OLF displays. There is an audible alarm as the oxygen partial pressure is greater than 1.4 bar or the set value and the OLF has reached the 80% limit.
By pressing the TIME button during a nitrox dive, the alternate display appears, which includes (Fig. 3.24): the current time Consumed Bottom Time maximum depth (during decompression display)
After five seconds the display will automatically revert to the original display.
Fig. 3.24 Alternative display. Pressing the TIME button displays the current time, maximum depth and CBT.
3.3.3. Oxygen Limit Fraction, OLF
In addition to tracking diver's exposure to nitrogen, the instrument tracks the exposure to oxygen, if set to NITROX Mode. These calculations are treated as entirely separate functions. The Oxygen Limit Fraction (OLF) is a combination of two methods tracking the oxygen toxicity: the Central Nervous System Toxicity (CNS) and Oxygen Tolerance Unit (OTU). Both fractions are scaled so that the maximum exposure is expressed as 100%. Each of the 11 segments represents 10%. The fraction closest to the maximum limit is displayed. When OTU% reaches the CNS% limit the lowest segment starts to blink (Fig. 3.25). The OLF is calculated based on the factors listed in chapter 6.1. "Operating Principles".
Fig. 3.25 The lowest bar graph blinks to indicate that the OLF value shown relates to OTU.

3.4. GAUGE MODE

If set to GAUGE Mode, the dive computer can be used for diving with TRIMIX or other technical diving gas mixes. If you are educated for technical diving and you plan to make these kind of dives, it is recommended that you set the instrument permanently to its GAUGE Mode (see chapter 4.3. "Set Modes"). This mode can also be used for other purposes like snorkeling, free diving, depth measurements etc. If set to GAUGE Mode the text GAUGE is shown after activation (Fig. 3.3). In the GAUGE Mode the present depth, maximum depth, dive time, time of day, temperature, and ascent rate indicator are shown during the dive (Fig. 3.26). NOTE! After a dive, the no-flying time is always set to 48 hours. During that period it is not possible to change the dive computer mode.

Fig. 3.26 Diving with the GAUGE Mode.

3.5. AT THE SURFACE

MAX NO

3.5.1. Surface Interval

An ascent to any depth shallower than 1.2 m [4 ft] will cause the DIVING display to be replaced by the SURFACE display, giving the following information (Fig 3.27): the maximum depth in meters [ft] the present depth in meters [ft] the no-flying warning indicated by an airplane icon the Altitude Adjustment setting the Personal Adjustment setting the dive attention symbol indicates that you should prolong your surface interval time the STOP label for 5 min, if the Mandatory Safety Stop was violated Er in the center window, if the decompression ceiling was violated (= Error Mode) (Fig. 3.30) the current temperature with C for Centigrade [or F for Fahrenheit] the dive time in minutes, i.e. the total duration of the most recent dive, shown as DIVE TIME.
Fig. 3.27 Surface display. You have surfaced from a 18 minute dive, which maximum depth was 20.0 m [66 ft]. The present depth is 0.0 m [0 ft]. The airplane symbol indicates that you should not fly and the dive attention symbol indicates that you should prolong your surface interval time.
Fig 3.28 Surface interval, Surface time display. Pressing the TIME button will show the surface time display.
Or when the TIME button is pressed once or twice: the current time, shown as TIME instead of the DIVE TIME the surface time in hours and minutes (separated by a colon), telling the duration of the present surface interval (Fig. 3.28) the no-flying time in hours and minutes is shown next to the airplane in the center window of the display (Fig. 3.29).
If set to NITROX Mode, the following information will also be shown: the oxygen percentage labeled with O2% is shown on the left side of the center window the current oxygen toxicity exposure shown with an Oxygen Limit Fraction (OLF) bar graph along the left side of the display (instead of the CBT).

3.5.2. Dive Numbering

Several repetitive dives are considered to belong to the same repetitive dive series when the dive computer has not counted the no-flying time to zero. Within each series, the dives are given individual numbers. The first dive of the series will be numbered as DIVE 1, the second as DIVE 2, the third as DIVE 3, etc. If you start a new dive in less than 5 minutes at the surface, the dive computer interprets this as a continuation of the previous dive and the dives are considered to be one and the same. The diving display will return, the dive number will remain unchanged, and the dive time will begin where it left off. After 5 minutes on the surface, subsequent dives are by definition repetitive. The dive counter displayed in the Planning Mode will progress to the next higher number if another dive is made.

4. MENU BASED MODES

The main menu based functions include the 1) memory, 2) dive simulator and 3) setting modes.
THE USE OF THE MENU BASED FUNCTIONS
Activate the menu based modes by pressing once the SMART (MODE) button in the Dive Mode (Fig. 4.1). Scroll the mode options by pressing the arrow up/down buttons. When scrolling the options, the label and an equivalent number are shown on the display (Fig. 4.2 - 4.4). Press the SMART (Select) button once to select the desired option. Scroll the submode options by pressing the arrow up/down buttons. When scrolling the options, the label and an equivalent number are shown on the display. Select the desired option by pressing once the SMART (Select) button. Repeat the procedure, if there are more submodes. Depending on the mode, you are now able to have a look at the memories, simulate a dive, or make desired settings (use the the arrow up/down buttons). The SMART button is used to Quit or to confirm the settings (OK).
Fig. 4.1 Main menu based Mode options. [3 MODE].

SELECT

Fig. 4.2 Memory option. [1 MEMORY].
If you do not press any of the buttons for 5 minutes while in a Menu based mode, the instrument beeps and returns to the timekeeping display automatically. In the Simulation Mode, however, the equivalent time is 60 minutes. TIP! By pressing the SMART button for more than 1 second, any menu based function or submode can be quit and the dive computer will return directly to the Dive Mode.
Fig. 4.3 Simulation option. [2 SIMUL].
THE LIST OF THE MENU BASED MODES
1. MEMORIES AND DATA TRANSFER [1 MEMORY] 1. Logbook and Dive Profile Memory [1 LOGBOOK] 2. Dive History Memory [2 HISTORY] 3. Data Transfer and PC-Interface [3 TR-PC] 2. SIMULATOR MODE [2 SIMUL] 1. Dive Simulator [1 SIM DIVE] 2. Dive Planning Simulator [2 SIM PLAN] 3. SET MODES [3 SET] 1. Dive Parameter Settings [1 SET DIVE]
Fig. 4.4 Set option. [3 SET].
Fig. 4.5 Memory options. [3 MEMORY].
1. Altitude Adjustment and Personal Adjustment Mode Settings [1 AdJ MODE] 2. Dive Time Alarm Setting [2 d ALARM] 3. Maximum Depth Alarm Setting [3 MAX DPTH] 4. Nitrox/Oxygen Percentage Setting [4 NITROX] 2. Setting Time [2 SET TIME] 1. Adjusting Time [1 AdJ TIME] 2. Adjusting Date [2 AdJ DATE] 3. Adjusting Daily Time Alarm Setting [3 T ALARM] 3. Setting Preferences [3 SET PREF] 1. Backlight On Time Setting [1 LIGHT] 2. Dive Computer Model Setting [2 MODEL] NOTE! After diving, the Menu based modes cannot be accessed until 5 minutes after the dive.
Fig. 4.6 Logbook option. [1 LOGBOOK].
4.1. MEMORIES AND DATA TRANSFER [1 MEMORY]
The memory options (Fig. 4.5) for this dive computer include the combined Logbook and Dive Profile Memory (Fig. 4.6 - 4.12), Dive History Memory (Fig. 4.13 - 4.14) and the Data Transfer and PC-Interface functions (Fig. 4.15).

Fig. 4.17 Dive Simulator Mode. [1 SIMDIVE].
Fig. 4.18 Selected Dive Simulator Mode. Descent by pressing the arrow down (TIME) button and ascent by pressing the arrow up (PLAN) button.
4.2.2. Dive Planning Simulator [2 SIM PLAN]
The Dive Planning Simulator Mode shows you the present no-decompression limits. In this mode, you are able to add the desired surface interval increment to present surface interval time, which allows you to plan your dives in advance. This mode is also used to add the desired surface intervals for dive simulations. Add the desired surface interval increment to present surface interval by pressing the arrow down (TIME) and arrow up (PLAN) buttons. NOTE! This display is only shown for repetitive dives. To enter the Dive Planning Simulator Mode select MODE- 2 SIMUL- 2 SIM PLAN (Fig. 4.19).

OK SELECT

Fig. 4.19 Dive Planning Simulator Mode. [2 SIMPLAN].
Fig. 4.20 Selected Dive Planning Simulator Mode. Add the desired surface interval increment (to present shown surface interval) by pressing the TIME and PLAN buttons. NOTE! This display is only shown for repetitive dives.
Fig. 4.21 Dive Planning Simulation.

4.3. SET MODES [3 SET]

The Set Modes (Fig. 4.22) are divided into three submodes for setting the dive-related parameters, time related parameters and your personal preferences.
4.3.1. Dive Parameter Settings [1 SET DIVE]
To enter the Dive Parameter Setting Mode select MODE- 3 SET- 1 SET DIVE (Fig. 4.23). The Dive Parameter Setting mode has two to four options depending on the dive computer mode. In GAUGE Mode there are two options, in AIR Mode three options and in NITROX Mode four options.
Fig. 4.22 Setting Options. [3 SET].
4.3.1.1. Altitude Adjustment and Personal Adjustment Settings [1 AdJ MODE]
The current Altitude and Personal Adjustment Modes are shown when diving and at the surface. If the mode does not match the altitude or personal conditions (see section 3.7. "High Altitude Dives and Personal Adjustment"), it is imperative that you enter the correct selection before diving. Use the Altitude Adjustment to select the correct altitude mode. Use the Personal Adjustment to add an extra level of conservatism. NOTE! New altitude and personal adjustment selections cannot be made until 5 minutes after the dive.
Fig. 4.23 Dive Parameter Setting Mode. [1 SET DIVE].
Fig. 4.24 Altitude Adjustment and Personal Adjustment Setting Mode. [1 AdJ MODE].
To enter the Altitude Adjustment and Personal Adjustment Setting Mode select MODE- 3 SET1 SET DIVE- 1 AdJ MODE (Fig. 4.24). Now you are able to select from the three altitude modes (Fig. 4.25) and the three personal modes (Fig. 4.26).

5.3. MAINTENANCE

The instrument should be soaked, thoroughly rinsed with fresh water, then dried with a soft towel after each dive. Make sure that all salt crystals and sand particles have been flushed out. Check the display and the transparent battery compartment cover for possible moisture or water. DO NOT use the dive computer, if you detect any moisture or water inside.
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.
5.4. WATER RESISTANCE INSPECTION
Water resistance of the unit must be checked after replacement of the battery or after other service operations. The check requires special equipment and training. You must frequently check the transparent battery compartment cover and 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 are not carefully followed. In case of a leak, immediately take the dive computer to an authorized SUUNTO dealer or distributor.

5.5. BATTERY REPLACEMENT

NOTE! It is advisable to contact an authorized Suunto dealer 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-flying time shown by the computer should have reached zero or you must wait for 48 hours or preferably even 100 hours between dives before you may dive again. 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 setting is lost. In the NITROX Mode also the nitrox settings are reverted back to default settings (21 % O2, 1.4 bar PO2). When working with the battery compartment, cleanliness is extremely important. Even the smallest dirt particles may cause a leakage when you dive. BATTERY KIT The battery kit includes a 3.0 V coin type lithium cell battery and a lubricated O-ring. 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 fingers. TOOLS REQUIRED A flat 1.5 mm screwdriver or a special tool for spring bars (K5857). Soft cloth for cleaning. Needlenose pliers or large screwdriver for turning securing ring.

BATTERY REPLACEMENT

The battery and the buzzer are located in the back of the instrument in a separate compartment, the parts of which are shown in Fig. 5.1. 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. Disassemble the shorter part of the strap with a flat 1.5 mm screw driver or a special tool for spring bars. The longer part of the strap may stay on but removing it may ease the work later on. Console model: Remove the dive computer from the console according the instructions of the console.
Thoroughly rinse and dry the computer. Open the securing ring of the battery compartment lid by pushing it down and rotating it clockwise. You may use a pointed nose pliers or a small screwdriver as an aid in the rotating. Put the pliers ends into the holes of the securing ring or the screwdriver onto the side of the right tooth on the ring (Fig. 5.2) and turn the ring clockwise. Care should be taken not to damage any of the parts. Remove the ring. Carefully remove the lid with the beeper attached to it. The lid can be removed by pressing with your finger on the outermost edge of the lid while at the same time pulling with your nail at the opposite side. Do not use sharp metal objects as they might damage the O-ring or the sealing surfaces. Remove the O-ring and the battery retainer. Carefully remove the battery. Do not damage the electrical contacts or the sealing surface.
Check for any traces of flooding, particularly between the beeper and the lid, or for any other damage. In case of a leak or any other damage, bring the dive computer to an authorized SUUNTO dealer or distributor for check and repair. 8. Check the condition of the O-ring; a defective O-ring may indicate sealing or other problems. Dispose the old O-ring, even if it seems to be in good condition.
Check that the battery compartment, battery holder and lid are clean. Clean with soft cloth if necessary.
10. Gently insert the new battery in the battery compartment. Check the polarity of the battery: the "-" mark should point toward the bottom of the compartment and the "+" mark upwards. 11. Reinstall the battery retainer in its correct position. 12. Check that the new lubricated O-ring is in good condition. Put it in the right position on the battery compartment lid. Be very careful not to get any dirt on the o-ring or its sealing surfaces. 13. Carefully press the lid onto the battery compartment with your thumb, while making sure that the O-ring is not at any point protruding out on the edge. 14. Put your other thumb through the locking ring. Press this thumb firmly against the lid and release the other one. Make sure that the lid is pressed completely down! 15. Turn the locking ring counterclockwise with your free thumb and fingers until it snaps into its locked position. 16. The dive computer should now active it's timekeeping mode and show time 18:00 [6:00 PM] and date SA 01,01. Activate the instrument. Check that:

SURFACE INTERVALS

The dive computer requires a minimum surface interval of 5 minutes between dives. If a surface interval is shorter than 5 minutes, the instrument dive counter and dive timer treat the next dive as a continuation of the previous dive. It adds the dive times, and calculates no-decompression limits or decompression stops based on excess nitrogen absorbed on both dives.
6.2. REDUCED GRADIENT BUBBLE MODEL, SUUNTO RGBM
The Reduced Gradient Bubble Model (RGBM) is a modern algorithm for tracking both dissolved and free gas in the tissues of divers performing a wide variety of maneuvers. Unlike the classical Haldane models, the RGBM can address a number of circumstances outside the range of just dissolved gas models by: monitoring continuous multiday diving tracking closely spaced repetitive diving accounting for diving deeper than previous dive regulating rapid ascents with high degrees of Doppler bubble formation incorporating consistency with real physical laws for gas kinetics taking a modern approach to a difficult problem.
The SUUNTO RGBM algorithm is developed in co-operation with SUUNTO and Bruce R. Wienke. It is based both on laboratory experiments and diving data (for example DAN's dive data).

6.3. OXYGEN EXPOSURE

The oxygen exposure calculations are based on currently accepted exposure time limit tables and principles. In addition to this the dive computer uses several methods to conservatively estimate the oxygen exposure. These include for example: the displayed oxygen exposure calculations are rounded to the next higher whole percentage value for recreational scuba diving, the recommended upper limit of 1.4 bar PO2 is used as a default the CNS% limits up to 1.4 bar are based on 1991 NOAA Diving Manual limits, but the limits higher than 1.4 bar are significantly shortened. Thus, if through carelessness or emergency you exceed the 1.4 bar PO2 limit, the dive computer will still continue to calculate and show OLF% information the uptake and recovery for both CNS% and OTU% are monitored the OTU monitoring is based on the long-term daily tolerance level and the recovery rate is reduced the half time limit for the CNS recovery is 75 minutes the maximum depth warning limit based on 1.4 bar PO2 is calculated and displayed. If extra conservatism for the depth limits is required the PO2 can be adjusted to 1.2 or 1.3 bar.

8. GLOSSARY

Altitude dive Ascent rate ASC RATE Ascent time ASC TIME Ceiling A dive made at an elevation greater than 300 m [1000 ft] above sea level. The speed at which the diver ascends toward the surface. Abbreviation for ascent rate. The minimum amount of time needed to reach the surface on a decompression dive. Abbreviation for ascent time. On a decompression dive the shallowest depth to which a diver may ascend based on computer nitrogen load. On a decompression dive the zone between the ceiling and the ceiling plus 1.8 m [6 ft]. This depth range is displayed with the two arrows pointing toward each other (the "hour glass" icon). Abbreviation for central nervous system toxicity. Toxicity caused by oxygen. Can cause a variety of neurological symptoms. The most important of which is an epileptic-like convulsion can cause a diver to drown. CNS% Compartment DAN DCS Decompression Central Nervous System toxicity limit fraction. Also note Oxygen Limit Fraction and whole-body toxicity. See "Tissue group". Divers Alert Network. Abbreviation for decompression sickness. Time spent at a decompression stop or range before surfacing, to allow absorbed nitrogen to escape naturally from tissues. On a decompression dive the depth range, between the floor and ceiling, within which a diver must stop for some time during ascent.

Ceiling Zone

Central Nervous System Toxicity

Decompression range

Decompression sickness Any of a variety of maladies resulting either primarily or secondary from the formation of nitrogen bubbles in tissues or body fluids, as a result of inadequately controlled decompression. Commonly called "bends" or "DCS". Dive series A group of repetitive dives between which the dive computer indicates some nitrogen loading is present. When nitrogen loading reaches zero the dive computer deactivates. Elapsed time between leaving the surface to descend, and returning to the surface at the end of a dive. Abbreviation for equivalent air depth. Abbreviation for enriched air nitrox. Also called Enriched Air = EANx. Air that has some oxygen added. Standard mixes are EAN32 (NOAA Nitrox I = NN I) and EAN36 (NOAA Nitrox II = NN II). Nitrogen partial pressure equivalent table. The deepest depth during a decompression dive at which decompression takes place. After a change in ambient pressure, the amount of time required for the partial pressure of nitrogen in a theoretical compartment to go half-way from its previous value to saturation at the new ambient pressure. A single or repetitive dive that includes time spent at various depths and whose no-decompression limits are not determined solely by the maximum depth attained. Any nitrogen-oxygen mix including standard air. United States National Oceanic and Atmospheric Administration.

TO LOCK A BEARING, PRESS SELECT.
The Suunto Vyper also provides help for navigating square and triangular patterns, as well as navigating a return heading. This is made possible by following graphical symbols in the center of the compass display: 13
Table 4.1. Locked bearing symbols Symbol Explanation You are traveling towards the locked bearing You are 90 (or 270) degrees from the locked bearing You are 180 degrees from the locked bearing You are 120 (or 240) degrees from the locked bearing 4.3.3. Compass settings You can define the compass settings ( calibration, declination and time-out) when in COMPASS mode:
Calibration AIR Because of changes in the surrounding magnetic field, the Suunto Vyper electronic compass occasionally needs to be re-calibrated. During the calibration process, the compass adjusts itself to the surrounding magnetic field and to tilting. As a basic rule, you should calibrate the compass whenever it doesnt seem to operate properly, or after replacing the dive computer's battery. First the compass is level calibrated and after a successful level calibration, the compass is tilt calibrated. The tilt calibration compensates for tilting the compass in any direction in angles of up to 45. Strong electromagnetic fields, such as power lines, stereo speakers, and magnets can affect the compass calibration. It is therefore advisable to calibrate the compass if your AIR Suunto Vyper 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 Vyper level during the level calibration process. A deviation of 5 is allowed in any direction from the horizontal plane during level calibration.
To calibrate the compass:
HOLD THE DEVICE LEVEL AND SLOWLY ROTATE 360.
HOLD THE DEVICE STILL AND SLOWLY TILT 90 VERTICALLY.
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, power lines 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. 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.
Time-out You can set the compass time-out to 1, 3, or 5 minutes. After the set time has passed from the latest button press, the dive computer returns to the TIME or DIVE mode from the COMPASS mode.
You can exit the COMPASS mode also by long pressing the SELECT button.

If MIX2 is set ON, settings for all mixes are stored until changed. If MIX2 has an oxygen content of 22% or greater, settings for all mixes are stored until changed.
5.8.4. Setting the personal/altitude adjustments The current Altitude and Personal Adjustment settings are displayed in the startup screen when entering the DIVE mode. If the mode does not match the altitude or personal conditions (see Section 5.9.4. Diving at altitude and Section 5.9.5. Personal adjustments), it is imperative that you enter the correct selection before diving. Use Altitude Adjustment to select the correct altitude and use Personal Adjustment to add an extra level of conservatism.
5.8.5. Setting the sample rate The sample rate controls how often the depth, time, tank pressure, and water temperature is stored in the memory. You can set the dive profile sample rate to 1, 10, 20, 30, or 60 seconds. The factory default setting is 20 seconds.
5.8.6. Setting the Safety Stops/Deep Stops The Deep Stop setting allows you to view Deep Stops. If Deep Stops are set to OFF, only the traditional Safety Stop calculation is used. If set to ON, iterative Deep Stops will be prompted as well. The length of the individual Deep Stops can be set to 1 or 2 minutes.
5.8.7. Setting the RGBM values For certain divers and diving conditions, it may be desirable to set the attenuated RGBM mode. The selection is displayed during the DIVE mode startup. The options are full RGBM effects (100%), and attenuated RGBM (50%).
5.8.8. Setting the units Use Unit Settings to choose between metric (meters/celsius/bar) and imperial (feet/fahrenheit/psi) units.
5.8.9. Setting the tank pressure alarm The tank pressure alarm can be set "ON" or "OFF" and in the range of 10 - 200 bar. The alarm is the secondary cylinder pressure alarm point. The alarm is activated when the tank pressure drops below the set limit. The 50 bar alarm, however, is fixed and cannot be changed.
5.8.10. Setting the tank pressure The wireless transmission can be set ON or OFF depending whether the optional wireless pressure transmitter is used or not. No cylinder pressure-related data is shown, nor data reception made, when this selection is OFF.
5.8.11. Setting the HP code The HP Code setting allows you to verify the selected code and to erase the stored code. It also enables re-pairing if necessary.

If the battery symbol is displayed in the Surface mode, or if the display is faded or weak, the battery may be too low to operate the dive computer, and battery replacement is recommended. NOTE For safety reasons, the backlight cannot be activated when the low battery warning is indicated by the battery symbol.
The optional wireless pressure transmitter sends out a lowbat (LOBT) warning when its battery voltage is getting low. This is shown intermittently instead of the pressure reading. When you get this warning, the pressure transmitter's battery needs to be replaced. 5.9.4. Diving at altitude The dive computer can be adjusted both for diving at altitude and also to increase the conservatism of the mathematical nitrogen model. When programming the instrument for the correct altitude, you need to select the correct Altitude Adjustment settings according to Table 5.5, Altitude Adjustment settings. The dive computer will adjust its mathematical model according to the entered altitude setting, giving shorter no-decompression times at higher altitudes (see Table 10.1, No-decompression time limits for various depths (m) and Table 10.2, No-decompression time limits for various depths (ft) in Section 10.2. RGBM). Table 5.5. Altitude Adjustment settings Alt. adjustment value Altitude range A0 A1 A- 300 m / 0 - 1000 ft 300 - 1500 m / 1000 - 5000 ft 1500 - 3000 m / 5000 - ft 25

NOTE WARNING

Section 5.8.4. Setting the personal/altitude adjustments describes how the Altitude value is set. Traveling to a higher elevation can temporarily cause a change in the equilibrium of dissolved nitrogen in the body. It is recommended that you acclimatize to the new altitude by waiting at least three hours before diving.
5.9.5. Personal adjustments There are personal factors that can affect your susceptibility to DCI, which you can predict in advance, and input into the decompression model. Such factors vary between divers and also for the same diver from one day to another. The three-step Personal Adjustment setting is available if a more conservative dive plan is desired and, for very experienced divers, a two step adjustment for RGBM effect on repetitive dives is available The personal factors which tend to increase the possibility of DCI include, but are not limited to: cold exposure - water temperature less than 20 C/68 F below average physical fitness level fatigue dehydration previous history of DCI stress obesity patent foramen ovale (PFO) exercise on or after dive This feature is used to adjust the computer to be more conservative, according to personal preference, by entering the suitable Personal Adjustment setting with the help of Table 5.6, Personal Adjustment settings. In ideal conditions, retain the default setting, P0. If conditions are more difficult, or any of the factors which tend to increase the possibility of DCI exist, select P1, or even the most conservative P2. The dive computer then adjusts its mathematical model according to the entered Personal Adjustment setting, giving shorter no-decompression times (see Section 10.2.2. No-decompression limits, Table 10.1, No-decompression time limits for various depths (m) and Table 10.2, No-decompression time limits for various depths (ft) ). Table 5.6. Personal Adjustment settings Personal Condition adjustment value P0 P1 P2 Ideal conditions

Desired tables

Default
Some risk factors or conditions exist Progressively more conservative Several risk factors or conditions exist
The Suunto Vyper also allows experienced divers who are willing to accept a greater level of risk to adjust the RGBM model. The default setting is 100%, which gives full RGBM effect. Suunto strongly advises you to use full RGBM effect. Statistically, very experienced divers have less incidents with DCI. The reason for this is unknown, but it is possible that some level of physiological and/or psychological accommodation can take place when you are very experienced as a diver. Thus, for certain divers and diving conditions, it may be desirable to set attenuated (50%) RGBM mode. See Table 5.7, RGBM model settings. 26
Table 5.7. RGBM model settings RGBM setting Desired Tables 100% 50%

Effect

Standard Suunto RGBM model Full RGBM effects (Default) Attenuated RGBM model Smaller RGBM effects, higher risk!
5.10. Safety Stops Safety Stops are widely considered good diving practice for recreational diving, and are an integral part of most dive tables. The reasons for performing a Safety Stop include: reducing sub-clinical DCI, microbubble reduction, ascent control, and orientation before surfacing. AIR The Suunto Vyper displays two different types of Safety Stops: Recommended Safety Stop and Mandatory Safety Stop. 5.10.1. Recommended Safety Stops With every dive over 10 meters, there is a three minute countdown for the Recommended Safety Stop, to be taken in the 6 - 3 m/10 ft - 20 ft range. This is shown with the STOP sign and a three-minute countdown in the center window instead of the no-decompression time.
WHEN STOP IS DISPLAYED, MAKE A RECOMMENDED SAFETY STOP FOR 3 MINUTES.
The Recommended Safety Stop, as the name implies, is recommended. If it is ignored, there is no penalty applied to the following surface intervals and dives.
5.10.2. Mandatory Safety Stops When the ascent rate exceeds 10 m/33 ft per minute continuously for more than 5 seconds, the microbubble build-up is predicted to be more than is allowed for in the decompression model. The Suunto RGBM calculation model responds to this by adding a Mandatory Safety Stop to the dive. The time of this Mandatory Safety Stop depends on the severity of the ascent rate excess. The STOP sign appears in the display and when you reach the depth zone between 6 m and 3 m/20 ft and 10 ft, the CEILING label, ceiling depth, and the calculated Safety Stop time also appear in the display. You should wait until the Mandatory Safety Stop warning disappears.The total length of the Mandatory Safety Stop time depends on the seriousness of the ascent rate violation.

DIVE DISPLAY - PRESENT DEPTH IS 15 M, NO-DECOMPRESSION STOP TIME LIMIT IS 38 MIN. ELAPSED DIVE TIME IS 13 MIN.
Alternative displays, by pressing the UP/DOWN buttons, show: the elapsed dive time in minutes, shown as DIVE TIME the water temperature in C/F the maximum depth during this dive in meters/feet, indicated as MAX the current time, shown as TIME
DOWN BUTTON TOGGLES BETWEEN MAXIMUM DEPTH, CURRENT TIME AND TANK PRESSURE.
UP BUTTON TOGGLES BETWEEN DIVE TIME AND WATER TEMPERATURE.
In addition, with the optional wireless transmission enabled: the Remaining Air-time in the left center window indicated as AIR TIME the cylinder pressure in bar (or psi) displayed in the lower left corner the cylinder pressure graphically displayed on the left side 6.1.2. Bookmark It is possible to record bookmarks in the profile memory during a dive. These bookmarks are displayed when scrolling the profile memory on the display. The bookmarks will also be shown as annotations in the downloadable Suunto Dive Manager PC software. The bookmark logs the depth, time, and water temperature, as well as compass heading (if the compass has been enabled) and tank pressure when available. To make a bookmark in the profile memory during a dive, press the SELECT button. A brief confirmation will be given.
A BOOKMARK IS PLACED IN THE PROFILE MEMORY DURING A DIVE BY PRESSING THE SELECT BUTTON.
6.1.3. Tank pressure data The pressure of your scuba cylinder in bars (or psi) is shown digitally in the lower left corner of the alternative display. Whenever you start a dive, the remaining air time calculation begins. After 30 - 60 seconds (sometimes more, depending on your air consumption), the first estimation of remaining air time will be shown in the left center window of the display. The calculation is always based on the actual pressure drop in your cylinder and will automatically adapt to your cylinder size and current air consumption.
The change in your air consumption will be based on constant one second interval pressure measurements over 30 - 60 second periods. An increase in air consumption will influence the remaining air time rapidly, while a drop in air consumption will increase the air time slowly. In this way, an over optimistic air time estimation, caused by a temporary drop in air consumption, is avoided. The remaining air time calculation includes a 35 bar/500 psi safety reserve. This means that when the instrument shows the air time to be zero, there is still about 35 bar/500 psi of pressure left in your cylinder, depending on your air consumption rate. With a high consumption rate, the limit will be closer to 50 bar/725 psi and with a low rate closer to 35 bar/500 psi. 30

NOTE NOTE

Filling your BC affects the air time calculation due to the temporary increase in air consumption. A change of temperature will affect the cylinder pressure and consequently the air time calculation.
Low Air Pressure Warnings The dive computer will warn you with three audible double beeps and a blinking pressure display when the cylinder pressure reaches 50 bar/725 psi. Three double beeps are also heard when the cylinder pressure goes down to the user-selected alarm pressure and when the remaining air time reaches zero. 6.1.4. Ascent rate indicator The ascent rate is shown graphically along the right hand side. When the maximum allowed ascent rate is exceeded, the lower segments start to blink with the top segment staying solid, indicating that the maximum ascent rate has been exceeded continuously or that the current ascent rate is significantly above the allowed rate.
ACTIVATED BACKLIGHT, ALARM AND A BLINKING ASCENT RATE BAR GRAPH INDICATE YOU ARE ASCENDING FASTER THAN 10 M/MIN. YOU ARE ADVISED TO MAKE A MANDATORY SAFETY STOP WHEN YOU REACH A DEPTH OF 6 M.

NORMAL ASCENT RATE.

DO NOT EXCEED THE MAXIMUM ASCENT RATE! Rapid ascents increase the risk of injury. You should always make the Mandatory and Recommended Safety Stops after you have exceeded the maximum recommended ascent rate. If this Mandatory Safety Stop is not completed, the decompression model will penalize your next dive(s). Continuous ascent rate violations will result in Mandatory Safety Stops. When Recommended Deep Stop is enabled, the length is indicated in seconds.
6.1.5. Safety Stops A 3 minute Recommended Safety Stop is prompted after every dive to over 10m. 6.1.6. Decompression dives When your NO DEC TIME becomes zero, your dive becomes a decompression dive so you must perform one or more decompression stops on your way to the surface. The NO DEC TIME on your display will be replaced by an ASC TIME, and a CEILING notation will appear. An upward pointing arrow will also prompt you to start your ascent. If you exceed the no-decompression limits on a dive, the dive computer will provide the decompression information required for ascent. After this, the instrument will continue to provide subsequent interval and repetitive dive information. Rather than requiring you to make stops at fixed depths, the dive computer lets you decompress within a range of depths (continuous decompression). The ascent time (ASC TIME) is the minimum amount of time needed to reach the surface in a decompression dive. It includes: the time needed to ascend to the ceiling at an ascent rate of 10 m/33 ft per minute. The ceiling is the shallowest depth to which you should ascend 31

7. AFTER DIVING

Once back at the surface, Suunto Vyper continues to provide post-dive safety information and alarms. Calculations to enable repetitive dive planning also help to maximize diver safety. Table 7.1. Alarms Symbol on display
Indication Diver Attention Symbol - Extend Surface Interval Violated Decompression Ceiling Do Not Fly Symbol
7.1. Surface interval An ascent to any depth shallower than 1.2 m/4 ft will cause the DIVING display to be replaced by the SURFACE display:
IT IS 15 MINUTES SINCE YOU SURFACED FROM A 6-MINUTE DIVE. THE PRESENT DEPTH IS 0.0 M. THE AIRPLANE SYMBOL AND NO-FLY VALUE INDICATE THAT YOU SHOULD NOT FLY FOR 20 HOURS.
Or, in the alternative displays, the following information will be shown: maximum depth of last dive in meters/feet dive time of last dive in minutes, shown as DIVE TIME the current time, shown as TIME the current temperature in C/F tank pressure, if activated If set to NITROX mode, the following information will also be shown: the oxygen percentage labeled O2% the oxygen partial pressure labeled PO2 the current oxygen toxicity exposure labeled OLF 7.2. Dive numbering Several repetitive dives are considered to belong to the same repetitive dive series when the dive computer has not counted the no-fly time to zero. Within each series, the dives are given individual numbers. The first dive of the series will be numbered as DIVE 1, the second as DIVE 2, the third as DIVE 3, etc. If you start a new dive with less than 5 minutes of surface interval time, the dive computer interprets this as a continuation of the previous dive and the dives are considered to be the same. The diving display will return, the dive number will remain unchanged, and the dive time will begin where it left off. After 5 minutes on the surface, subsequent dives are, by definition, repetitive. The dive counter displayed in the Planning mode will increment to the next number if another dive is made. 7.3. Repetitive dive planning AIR The Suunto Vyper includes a dive planner that allows you to review the no-decompression limits on a subsequent dive, taking the residual nitrogen loading of previous dives into consideration. The Dive Planning mode is explained in Section 7.5.1. Dive Planning mode (PLANnodec). 37
7.4. Flying after diving In DIVE mode, the no-fly time is shown in the center window next to the airplane image. In TIME mode, the airplane image is shown in the top left corner. 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).

9. 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 (MIX1 21% 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. 9.1. Battery kit The battery kit includes a 3.0 V coin type lithium cell battery and a lubricated O ring. 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 fingers. 9.2. Required tools A flat 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. 9.3. Replacing the battery The battery and the buzzer are located in the back of the instrument in a separate compartment. To change the battery: 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. Disassemble the shorter part of the strap with a flat 1.5 mm screwdriver or a special tool for spring bars. The longer part of the strap may stay on but removing it may ease the work later on. Console model: Remove the dive computer from the console according the instructions of the console. 2. Thoroughly rinse and dry the computer. 3. Open the securing ring of the battery compartment lid by pushing it down and rotating it clockwise. You may use a pointed nose pliers or a small screwdriver as an aid in the rotating. Put the pliers ends into the holes of the securing ring or the screwdriver onto the side of the right tooth on the ring and turn the ring clockwise. Be careful not to damage any of the parts. 4. Remove the ring. 5. Carefully remove the lid with the beeper attached to it. You can remove the lid by pressing with your finger on the outermost edge of the lid while simultaneously pulling with your nail at the opposite side. Don't use sharp metal objects as they might damage the O-ring or the sealing surfaces. 46

6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17.
Remove the O-ring and the battery retainer. Carefully remove the battery. Do not damage the electrical contacts or the sealing surface. Check for any traces of flooding, particularly between the beeper and the lid, or for any other damage. In case of a leak or any other damage, bring the dive computer to an authorized SUUNTO dealer or distributor for check and repair. Check the condition of the O-ring; a defective O-ring may indicate sealing or other problems. Dispose the old O-ring, even if it seems to be in good condition. Check that the battery compartment, battery holder and lid are clean. Clean with soft cloth if necessary. Gently insert the new battery in the battery compartment. Check the polarity of the battery: the - mark should point toward the bottom of the compartment and the + mark upwards. Reinstall the battery retainer in its correct position. Check that the new lubricated O-ring is in good condition. Put it in the right position on the battery compartment lid. Be very careful not to get any dirt on the o-ring or its sealing surfaces. Carefully press the lid onto the battery compartment with your thumb, while making sure that the O-ring is not at any point protruding out on the edge. Put your other thumb through the locking ring. Press this thumb firmly against the lid and release the other one. Make sure that the lid is pressed completely down! Turn the locking ring counterclockwise with your free thumb and fingers until it snaps into its locked position. The dive computer should now active its timekeeping mode and show time 18:00 [6:00 PM] and date SA 01,01. Activate the instrument. Check that all display segments work. the low battery warning is off. the buzzer beeps and backlight works. all the settings are correct. Reset if necessary. Install the dive computer back into the console or boot and reassemble the strap. The instrument is now ready for use. Wrist model: Assembling into the boot: First insert the longer strap in its hole in the front of the boot and then the dive computer into its cavity in the boot starting at the back end. Then snap also the long strap end of the instrument into the boot. Stretch the boot as needed. Assemble the shorter part of the strap. Use the spring bar tool or small screwdriver to compress the spring bars. Make sure that the spring bars get fully seated so they will not come off their holes. Console model Refit the dive computer in the console according the instructions of the console. Check after the first dives for possible moisture under the transparent battery compartment lid, indicating a leak.

CAUTION

9.4. Wireless transmitter battery replacement NOTE It is advisable to contact an authorized Suunto representative for transmitter battery replacement. It is imperative that the change is made in a proper manner to avoid any leakage of water into the transmitter. Defects caused by improper battery installation are not covered by the warranty.

Tissue calculation model: Suunto Deep Stop RGBM algorithm (developed by Suunto and Bruce R. Wienke, BSc, MSc, PhD) 9 tissue compartments Tissue compartment halftimes: 2.5, 5, 10, 20, 40, 80, 120, 240 and 480 minutes (on gassing). The off gassing halftimes are slowed down 50
Reduced gradient (variable) "M" values based on diving habit and dive violations. The "M" values are tracked up to 100 hours after a dive The EAN and oxygen exposure calculations are based on recommendations by R.W. Hamilton, PhD and currently accepted exposure time limit tables and principles Battery: One 3 V lithium battery: CR 2450 Battery storage time (shelf life): Up to three years Replacement: Every three years, or more often depending on dive activity Life expectancy at 20C/68F: 0 dives/year > 3 years 100 dives/year >1.5 years 300 dives/year >1 year Transmitter: One 3V lithium battery: 1/2AA (K5546) and O-ring 2.00 mm x 2.00 mm (K5538) Battery storage time (shelf life): Up to three years Replacement: Every two years, or more often depending on dive activity Life expectancy at 20C/68F: 0 dives/year > 3 years 100 dives/year > 2 years 400 dives/year > 1 year The following conditions have an effect on the expected battery lifetime: The length of the dives The conditions in which the unit is operated and stored (e.g. temperature/cold conditions). Below 10C/50F the expected battery lifetime is about 50-75% of that at 20C/68F The use of the backlight and audible alarms The use of the compass The quality of the battery. (Some lithium batteries may exhaust unexpectedly, which cannot be tested in advance) The time the dive computer has been stored until it gets to the customer. (The battery is installed in the unit at the factory) NOTE Low temperature or an internal oxidation of the battery may activate the battery warning even though the battery has enough capacity. In this case, the warning usually disappears when the DIVE mode is activated again.
10.2. 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 co-operation 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
10.2.1. 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. 10.2.2. No-decompression limits The no-decompression limits displayed by the dive computer for the first dive to a single depth (see Table 10.1, No-decompression time limits for various depths (m) and Table 10.2, No-decompression time limits for various depths (ft).), are slightly more conservative than those permitted by the U.S. Navy tables. Table 10.1. 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

12. DISCLAIMERS

12.1. Users responsibility AIR This instrument is intended for recreational use only. Suunto Vyper must not be used for obtaining measurements that require professional or industrial precision. 12.2. CE The CE mark is used to mark conformity with the European Union EMC directive 89/336/EEC FIOH, Topeliuksenkatu 41 a A, FI-00250 Helsinki, Finland, notified body no.0430, has EC type-examined 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 AIR gauge standard. The Suunto Vyper is designed to comply with this standard.
13. SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING COMPUTERS AND SUUNTO DIVING COMPUTER ACCESSORIES
This Limited Warranty is valid as of January 1st, 2007. Suunto Oy ("Suunto") provides this limited warranty to those who have purchased the Suunto Diving computer and/or Suunto diving computer accessories ("Product"). Suunto warrants that during the Warranty Period Suunto or a Suunto Authorized Service Center will, at its sole discretion, remedy defects in materials or workmanship free of charge either by a) repairing the Product or the parts, or b) replacing the Product or the parts, or c) refunding the purchase price of the Product, subject to the terms and conditions of this Limited Warranty. Your mandatory legal rights under your applicable national laws relating to the sale of consumer products are not affected by this Limited Warranty. This Limited Warranty is only valid and enforceable in the country in which you purchased the Product, provided that Suunto has intended the Product for sale in that country. If, however, you purchased the Product in a member state of the European Union, Iceland, Norway, Switzerland or Turkey, and Suunto originally intended the Product for sale in one of these countries, this Limited Warranty is valid and enforceable in all of these countries. The warranty service may be limited due to the possible country-specific elements in the Products. In countries outside the European Union, Iceland, Norway, Switzerland or Turkey, subject to your agreement to pay a service fee and compensation for the possible shipment costs incurred by Suunto or a Suunto Authorized Service Centre, you can have warranty service other than in the country in which you purchased the Product. Any spare parts will be provided free of charge in this case. Warranty Period The Warranty Period starts at the date of retail purchase by the original end-user purchaser. The Product may consist of several different parts, and the different parts may be covered by a different warranty period (hereinafter "Warranty Period"). The different Warranty Periods are: a. Two (2) years for the diving computers; b. One (1) year for the consumable parts and accessories, including (but not limited to) chargeable batteries, chargers, docking stations, straps, cables and hoses (whether included in the diving computer sales package or sold separately). To the extent your national laws permit, the Warranty Period will not be extended or renewed or otherwise affected due to subsequent resale, Suunto authorized repair or replacement of the Product. However, part(s) repaired or replaced during the Warranty Period will be warranted for the remainder of the original Warranty Period or for three (3) months from the date of repair or replacement, whichever is longer. Exclusions and Limitations This Limited Warranty does not cover: 1. a) normal wear and tear, b) defects caused by rough handling (including, without limitation, defects caused by sharp items, by bending, compressing or dropping, etc.), or c) defects or damage caused by misuse of the Product, including use that is contrary to the instructions provided by Suunto (e.g. as set out in the Product's user guide and/instruction manual), and/or e) other acts beyond the reasonable control of Suunto; 2. user manuals or any third-party software (even if packed or sold with the Suunto hardware), settings, content or data, whether included or downloaded in the Product, or whether included during installment, assembly, shipping or at any other time in the delivery chain or otherwise and in any way acquired by you; 3. defects or alleged defects caused by the fact that the Product was used with, or connected to, any product, accessory, software and/or service not manufactured or supplied by Suunto, or was used otherwise than for its intended use; 4. replaceable batteries. 57

RESULTING FROM THE PURCHASE OR USE OF THE PRODUCT OR ARISING FROM BREACH OF THE WARRANTY, BREACH OF CONTRACT, NEGLIGENCE, STRICT TORT, OR ANY OTHER LEGAL OR EQUITABLE THEORY, EVEN IF SUUNTO KNEW OF THE LIKELIHOOD OF SUCH DAMAGES. SUUNTO SHALL NOT BE LIABLE FOR DELAY IN RENDERING SERVICE UNDER THE LIMITED WARRANTY, OR LOSS OF USE DURING THE TIME THE PRODUCT IS BEING REPAIRED.
14. DISPOSAL OF THE DEVICE
Please dispose of the device in an appropriate way, treating it as electronic waste. Do not throw it in the garbage. If you wish, you may return the device to your nearest Suunto representative.

GLOSSARY

Altitude dive Ascent rate ASC RATE Ascent time ASC TIME Ceiling Central nervous system toxicity A dive made at an elevation greater than 300 m/1000 ft above sea level. The speed at which the diver ascends toward the surface. Abbreviation for ascent rate. The minimum amount of time needed to reach the surface on a decompression stop dive. Abbreviation for ascent time. On a decompression stop dive, the shallowest depth to which a diver may ascend based on computed nitrogen load. Toxicity caused by oxygen. Can cause a variety of neurological symptoms. The most important of which is an epileptic-like convulsion which can cause a diver to drown. Abbreviation for central nervous system toxicity. Central nervous system toxicity limit fraction. Also note Oxygen Limit Fraction See "Tissue group". Abbreviation for Divers Alert Network. Abbreviation for decompression illness. Time spent at a decompression stop, or range, before surfacing, to allow absorbed nitrogen to escape naturally from tissues On a decompression stop dive, the depth range between the floor and the ceiling within which a diver must stop for some time during ascent. Any of a variety of maladies resulting either directly or indirectly from the formation of nitrogen bubbles in tissues or body fluids, as a result of inadequately controlled decompression. Commonly called "the bends" or "DCI". A group of repetitive dives between which the dive computer indicates some nitrogen loading is present. When nitrogen loading reaches zero the dive computer deactivates. Elapsed time between leaving the surface to descend, and returning to the surface at the end of a dive. Abbreviation for equivalent air depth. Abbreviation for enriched air nitrox. Also called nitrox or Enriched Air = EANx. Air that has some oxygen added. Standard mixes are EAN32 (NOAA Nitrox I = NN I) and EAN36 (NOAA Nitrox II = NN II). Nitrogen partial pressure equivalent table. The deepest depth during a decompression stop dive at which decompression takes place. After a change in ambient pressure, the amount of time required for the partial pressure of nitrogen in a theoretical compartment to go half way from its previous value to saturation at the new ambient pressure. A single or repetitive dive that includes time spent at various depths and whose no decompression limits are therefore not determined solely by the maximum depth attained. In sports diving, refers to any mix with a higher fraction of oxygen than standard air. United States National Oceanic and Atmospheric Administration. The maximum amount of time a diver may remain at a particular depth without having to make decompression stops during the subsequent ascent. Any dive which permits a direct, uninterrupted ascent to the surface at any time.

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
CUSTOMER SERVICE CONTACTS
Global Help Desk Suunto USA Phone Canada Phone Suunto website +60 +1 (800) 543-9124 +1 (800) 267-7506 www.suunto.com

COPYRIGHT

This publication and its contents are proprietary to Suunto Oy. Suunto, Dive Computer, Suunto VyperAir and their logos are registered or unregistered trademarks of Suunto Oy. All rights reserved. While we have taken great care to ensure that information contained in this documentation is both comprehensive and accurate, no warranty of accuracy is expressed or implied. Its content is subject to change at any time without notice.

Model of Dive Computer

Serial number:

TWO YEAR WARRANTY

This product is warranted to be free of defects in material and/or workmanship to the original owner for the above noted period (does not include battery life). Keep a copy of the original purchase receipt and make sure to get this warranty card stamped at the place of purchase. The warranty originates from the date of purchase. All warranties are limited and are subject to the restrictions given in the instruction manual. This warranty does not cover the damage to the product resulting from improper usage, improper maintenance, neglect of care, alteration, improper battery replacement or unauthorized repair. Suuntos dive computers and wristop computers can be registered online at www.suunto.com.