9 The mathematical model uses an ascent rate of 10 m/min [33 ft/min]. Therefore it is critical that a proper ascent rate is always used. The reader/diver is forewarned that individual physiological differences, severe environmental conditions and predive activities, especially those which tend to increase dehydration, may increase the risk of decompression sickness. As a safety precaution Suunto recommends that divers using the SOLUTION should maintain no less than 5 to 10 minutes no-decompression time remaining at all times during the dive. This is especially important for divers in poor physical condition, in cold water or other arduous conditions. Historically divers have been advised to always include a margin of safety in their diving activities. Suunto supports these practices and strongly recommends that the diver make the deepest portion of the dive near the beginning of the dive and gradually progress into shallower depth, allowing time for a 3 to 5 minutes "safety stop" at a depth range of 3 to 6 meters (10 to 20 ft). This is believed to be effective in further reducing the risk of decompression sickness. Furthermore, the reader/diver is advised that any dive carries some risk of decompression sickness and neither the authors, nor SUUNTO OY will assume any responsibility or liability for accidents or injuries which might occur for any reason. WARNING! DO NOT USE THE SOLUTION WITH NITROX MIX! The mathematical tissue calculation model of the SOLUTION has been designed for use with standard breathing air only (approximately 21% oxygen and 79% nitrogen by volume). Therefore, the SOLUTION must not be used for diving with "Nitrox" or other mixed gases.
2. GETTING ACQUAINTED WITH THE SOLUTION This brief introduction will utilize the unique built-in dive simulator of the SOLUTION. Following the simple steps described below you can see exactly what the display might show during different stages of a typical dive sequence. WARNING! READ AND UNDERSTAND THE ENTIRE OWNER'S MANUAL BEFORE DIVING! Failure to complete this step may result in serious personal injury. The purpose of this section is to provide the user with initial information to preview the operation of the computer. Since this information is limited, it is imperative that you read and understand the entire owner's manual before attempting to dive.
2.1 WATER CONTACTS The SOLUTION has three water contacts on the face of the instrument: - COM: common contact - ON/PLAN: activation and dive planning contact - TIME/MODE: time display and mode selection contact On the surface the SOLUTION is operated by simultaneously touching the COM contact and one or two of the other contacts. When doing this, your finger tips should be wet or moist to establish the necessary electric contact. When submerged these contacts are automatically connected by the conductivity of the water.

2.2 ACTIVATION The SOLUTION is activated by touching the ON/PLAN and COM contacts. The SOLUTION confirms this with a short beep. The first display, the STARTUP, shows all available elements and immediately after this the serial number of the unit. A few seconds later the READY display will appear, showing zero values.
2.3 THE DIVE SIMULATOR - FOR EASY LEARNING The SOLUTION 's built-in Dive Simulator is an excellent tool for becoming familiar with the SOLUTION. It will allow you to "perform" dive profiles of your choice and see exactly what the display would look like during an actual dive. This includes
11 basic dive information, as well as audible and visual warnings. In simulation mode the time has been speeded up, moving four times faster than real time when diving and 12 times as fast on the surface. Enter the Dive Simulation Mode To enter the dive simulation mode, keep your moistened fingers against the TIME/MODE and COM contacts. A bar on the right-hand side of the display will scroll through the different modes available. Lift your fingers when the scroll bar is in line with the letters dSI (dive simulation) next to the screen and the text dSi is shown on the display. If you accidentally enter the wrong menu selection, simply touch all the three contacts simultaneously to return to the READY display. Before Diving (simulation) To make the first dive. When you enter the dive simulation mode, as described above, the initial display is the READY display. Next, enter the DIVE PLANNING mode by touching the ON/PLAN and COM contacts for about one second. Release your fingers immediately when you hear a short beep. The DIVE PLANNING display will rapidly cycle through the no-decompression limits for various depths. Diving (simulation) To simulate a dive, use the three contacts as follows: To descend: touch the ON/PLAN and COM contacts for as long as you want to descend. To ascend: touch the TIME/MODE and COM contacts. You will have to lift your fingers momentarily to avoid an excessive ascent speed rate. We are now ready to descend. Keep your fingers on the ON/PLAN and COM contacts for a couple of seconds at a time. Descend step by step to about 30 m [100 ft]. After about 9 minutes of diving, start the ascent. Check your ascent rate on the ascent rate indicator. The ascent rate is indicated in the upper left corner by one, two, or three bars indicating a maximum ascent rate of 5, 7.5, and 10 m/min [16, 25, and 33 ft/min, respectively]. If you exceed the maximum allowed ascent rate of 10 m/min [33 ft/min], all three bars and a blinking SLOW will be shown. Remember to make a safety stop at a depth of about 4.5 m [15 ft] before surfacing. Now it is time to surface.
Surface Interval (simulation) Back on the surface the display shows the maximum depth and dive time of your simulated dive and the elapsed surface interval time or the no-flying time display.

It is also possible to simulate repetitive dives and to see how the SOLUTION works e.g. during a decompression dive.
Exit the Dive Simulation Mode You may any time exit the simulation mode by making contact between all three water contacts. This is most easily done by first covering the TIME/MODE and ON/PLAN contacts with your right thumb and then touching the COM contact with your left thumb. As usual, it helps if your fingers are wet or moist. This procedure will bring you back to the normal READY mode. The SOLUTION is now ready for a dive. It will automatically switch off in about 10 minutes of surface time in case you do not use it any more and no real dives have been performed.
3. DIVING WITH THE SOLUTION This section contains instructions on how to operate the SOLUTION and interpret its displays. Each display has been carefully designed to provide important information you will need to plan your dive or dive series. You will find that the SOLUTION is easy to use and read. Each display shows only the data relevant to that specific diving situation. For example, while you are on a dive, surface interval data is irrelevant and therefore not shown. On the other hand, while you are on the surface after a dive, remaining no-decompression time for that dive is irrelevant and therefore replaced with information for your next dive.
3.1 USE OF WATER CONTACTS As described in Section 2.1, "Water Contacts", the SOLUTION is controlled with the COM (common), ON/PLAN, and TIME/MODE contacts, as follows: Activation: touch the ON/PLAN and COM contacts. Dive planning: once the SOLUTION has been activated, touch the ON/PLAN and COM contacts. Clock: touch the TIME/MODE and COM contacts for a second. The time is then displayed for four seconds. When the TIME/MODE and COM contacts are being touched over two seconds, the display will start to scroll through the following modes. Lift your fingers when the desired mode is displayed: Memories: at LOG the logbook and profile memories are accessed. at HIS the history memory is accessed. at Alt the altitude and/or personal adjustment can be set. at dSI the dive simulator is ready for use. at Set the clock can be adjusted.
Dive history: Altitude/ personal adjustment setting:
Dive simulator: Time setting:
Return: you can at any time exit the above modes by touching all three contacts at the same time. First make contact between the ON/PLAN and TIME/MODE contacts, e.g. by covering both contacts with your right thumb. Without lifting your right thumb, touch the COM contact with your left thumb. Alternatively, you can exit the modes simply by submerging the SOLUTION in water. You may sometimes encounter problems in using the contacts, or the SOLUTION may activate on its own. The reason for this is probably contamination or invisible marine growth that may create an unwanted electric current between the water contacts. It is therefore important that the SOLUTION be carefully washed in fresh water after the day's diving is completed. The contacts can be cleaned with a soft pencil eraser.

3.2.2 Dive Planning It is possible any time on the surface to enter the DIVE PLANNING mode, simply by touching the ON/PLAN and COM contacts. The display will rapidly cycle through the no-decompression limits for various depths in 3 m [10 ft] increments starting at 9 m [30 ft]. It takes about 30 seconds to run through the complete cycle, after which the SOLUTION will automatically return to the READY display. Higher altitude/ personal adjustment modes will shorten the no-decompression time limits. These limits at different altitude/ personal adjustment mode selections are shown in Tables 7.1 and 7.2 in Section 7.1, "OPERATING PRINCIPLES".
3.2.3 Calendar Clock Function The TIME display can be retrieved any time on the surface by touching the TIME/MODE and COM contacts for about a second. The current time and date will be shown for four. When diving, the dive entry time and date is registered in the logbook memory. Remember always to check before diving that the clock is set, especially when traveling to different time zones. For adjusting the clock, refer to Section 4.5, "Setting Time and Date". In the metric version of the SOLUTION , the 24-hour time system is used, while in the imperial version the 12-hour time system is used. 3.3 DIVING 3.3.1 Basic Dive Data The SOLUTION will remain in the SURFACE mode at depths less than 1.5 m [5 feet]. At depths greater than 1.5 m the SOLUTION will go into the DIVE mode. Each piece of information on the display is clearly marked. During a no-decompression dive, the following information will be shown: - the available no-decompression time in minutes is shown as NO DEC TIME. It is calculated based on the five factors listed in Section 7.1, "OPERATING PRINCIPLES". - your present depth is shown in meters [ft]. In addition to the digital display, the present depth is also displayed graphically with a depth bar graph along the left side of the display window. - the elapsed dive time in minutes in the lower right corner, shown as DIVE TIME. - the altitude/ personal adjustment setting (A0, A1, or A2). In the lower left corner the following information will alternate: - the maximum depth during this dive in meters [ft], indicated as MAX, for about 5 seconds. A single bar on the depth bar graph also shows the maximum depth reached. - the water temperature, followed by for Centigrade [or for Fahrenheit], for C F about 2.5 second.

19 THE SOLUTION SHOWS YOU THAT DECOMPRESSION IS REQUIRED! Note the upward pointing arrows. The ascent time (ASC TIME) is the minimum amount of minutes 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/min [33 ft/min] plus The time needed at the ceiling. The ceiling is the shallowest depth to which you should ascend plus The time needed to reach the surface after the ceiling has been removed. WARNING! YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DISPLAYED ON THE SOLUTION.
The ascent time will increase if you: - remain at depth - ascend slower than 10 m/min [33 ft/min], or - make your decompression stop deeper than at the ceiling. These factors will also increase the amount of air required to reach the surface. WARNING! NEVER ASCEND ABOVE THE CEILING! You must not ascend above the ceiling. In order to avoid doing so by accident, you should stay slightly below the ceiling. Ceiling, Floor, and Decompression Range When in decompression, it is important that you understand the meaning of ceiling, floor, and decompression range: - The ceiling is the shallowest depth to which you should ascend when in decompression. At this depth, or below, you must perform one or several decompression stops. All decompression stops must be performed at or below the ceiling depth. - The floor is the deepest depth at which decompression takes place. Decompression will start when you pass this depth during your ascent. - The decompression range is the depth range between the ceiling and floor. Within this range, decompression takes place. However, it is important to remember that the decompression will be very slow at or close to the floor.
The depth of the ceiling and floor will depend on your dive profile. They will be fairly shallow when you enter the decompression mode, but if you remain at depth, they will move downward and the ascent time will increase. Likewise, the floor and ceiling
20 may change while you are decompressing. The graphical depth scale on the SOLUTION will show your ceiling. All of the depth bars shallower than your ceiling will blink. For example, if your ceiling is at 3 m[10 ft], all of the bars between 0 and 3 m [10 ft] will blink. When the sea surface is rough, it may be difficult to maintain a constant depth near the surface. In this case it will be more manageable to maintain an additional distance below to the ceiling, to make sure that the waves do not lift you above the ceiling. SUUNTO recommends that decompression takes place deeper than 4 m [13 ft], even if the indicated ceiling is shallower. NOTE: It will take more time and more air to decompress below the ceiling than at the ceiling.

Display Below Floor The blinking ASC TIME and two upwards pointing arrows indicate that you are below the floor. You should start your ascent immediately. Display Above Floor When you ascend above the floor, the ASC TIME display stops blinking and the two upward pointing arrows disappear. Decompression will now begin, but is very slow. You should therefore continue your ascent. Display At Ceiling When you reach the ceiling, the display will show you two arrows pointing toward each other. Do not ascend above this depth. As described above, it is recommended to do the decompression stop below the ceiling, to avoid accidental ascent above the ceiling. Display Above Ceiling If you ascend above the ceiling, a downward pointing arrow will appear and continuous beeping starts. In addition a blinking error warning Er reminds you that you have only three minutes to correct the situation. You must immediately descend to or below the ceiling. If you continue to violate the decompression, the SOLUTION goes into a permanent ERROR MODE. In this mode the SOLUTION can only be used as a depth gauge and timer. You must not dive again for at least 48 hours. See also Section 3.6, Error Conditions.
During decompression, ASC TIME will count down toward zero. When the ceiling moves upwards, you can ascend to the new ceiling. You may surface only when the ascent time reaches zero and ASC TIME is replaced by NO DEC TIME.
3.4 AT SURFACE 3.4.1 Surface Interval An ascent to any depth shallower than 1.5 m [5 ft] will cause the DIVING display to be replaced by the SURFACE displays, giving the following information. - The surface time in hours and minutes (separated by a colon), telling the duration of the present surface interval. It is shown below SURF TIME in the center window of the display. - The dive time in minutes, i.e. the total duration of the most recent dive, is displayed above DIVE TIME in the lower right corner. - The maximum depth of your most recent dive in meters [ft] is shown in the same position as your depth readings during the dive. MAX indicator is then shown in front of the value. In addition the graphical depth display shows a single bar at the maximum depth. - The temperature in [ is shown in the lower left corner. C F] - The no-flying warning is indicated by a blinking airplane. - The desaturation/ no-flying time in hours and minutes is shown next to the non-blinking airplane in the center window of the display. If you start a new dive in less than 10 minutes at the surface, the SOLUTION interprets this as a continuation of the previous dive. The DIVING display will return, the DIVE number will remain unchanged, and DIVE TIME will begin where it left off. After 10 minutes on the surface, subsequent dives are by definition repetitive. The DIVE counter displayed in the dive planning mode will progress to the next higher number if you make another dive.

Dive Planning You may, any time, on the surface enter the DIVE PLANNING mode in the manner described in Section 3.2.2, by touching the ON/PLAN and COM contacts. The SOLUTION will take into account the residual nitrogen caused by your previous dives. The no-decompression times given for different depths will therefore be shorter than before your first dive. You may also read the time by touching the TIME/MODE and COM contacts, as described in Section 3.2.3. 3.4.2 Flying After Diving
22 The no-flying time is shown in the center window next to the non-blinking airplane image. The airplane is blinking as a reminder, when the alternative display showing surface time is on. Flying or traveling to a higher altitude should be avoided anytime the airplane symbol is displayed. The no-flying time displayed by the SOLUTION is equivalent to the so-called desaturation time. When this time has elapsed, the residual nitrogen is no longer a factor for subsequent dives. At this time the SOLUTION will automatically deactivate itself. Flying or traveling to a higher altitude after a dive may significantly increase the risk of DCS. WARNING! YOU ARE ADVISED TO AVOID FLYING ANYTIME THE COMPUTER DISPLAYS THE DO NOT FLY WARNING - INDICATED BY AN AIRPLANE! Further, the Divers Alert Network (DAN) advises as follows: - 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 2400 m [8000 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 flight. Suunto recommends that flying be avoided until both the DAN guidelines and the SOLUTION wait to fly conditions are satisfied.
3.5 HIGH ALTITUDE DIVES AND PERSONAL ADJUSTMENT The SOLUTION can be adjusted for diving at altitude or for increasing the conservatism of the mathematical model. When programming the SOLUTION for the correct altitude, the diver needs to select the correct altitude mode according to Table 3.1. As a result the SOLUTION adjusts its mathematical model according to the entered altitude, giving shorter no-decompression times at higher altitudes (Tables 7.1 and 7.2). The entered altitude/ personal adjustment mode is indicated by A0, A1, or A2. Modes A1 and A2 are shown with a diver symbol. Section 4.3, Altitude Setting describes how the altitude mode is adjusted. Table 3.1 Altitude ranges. Altitude mode Altitude range A- 700 m [0 - 2300 ft] A- 1500 m [2300 - 5000 ft] A- 2400 m [5000 - 8000 ft]

4.2 DIVE HISTORY MEMORY The Dive History is activated by touching the TIME/MODE and COM contacts until HIS appears. This mode will show: - the maximum depth ever reached - the total accumulated dive time in hours - the total number of dives 999 dives and 999 hours of diving can be registered. When these maximum values are reached, the counters will start again from 0.
4.3 ALTITUDE/ PERSONAL ADJUSTMENT SETTING The current altitude/ personal adjustment mode is shown when diving as well as on the surface display. If the mode is not correct (see Chapter 3.5), it is imperative that the diver enter the correct selection before diving. The new altitude/ personal adjustment setting is entered in the following way. In these figures the contacts which are connected are shadowed. 1. Activate the altitude/ personal adjustment setting mode by connecting the TIME/MODE and COM contacts continuously. Release your fingers immediately when Alt appears on the display. Within a couple of seconds the present altitude/ personal adjustment setting is shown.
2. Connect the ON/PLAN and COM contacts until a beep is heard and all three altitude/ personal adjustment modes appear. Release your fingers immediately at this point. The current mode is now blinking. Wait at least two seconds but not more than four seconds before the next step. 3. Connect again the ON/PLAN and COM contacts until the blinking altitude/ personal adjustment mode starts to scroll. Release your fingers when the desired mode is blinking. Wait at least two seconds but no more than four seconds before next step. 4. Connect the TIME/MODE and COM contacts to confirm this new altitude/ personal adjustment mode. A beep is heard, the blinking will stop and the other mode indicators will disappear. 5. The process is ended by the RETURN command, i.e. by connecting all three contacts at the same time. A double beep is heard and the SOLUTION will return to the surface mode. WARNING! ALWAYS RECHECK THE ALTITUDE/ PERSONAL ADJUSTMENT SETTING TO ENSURE THAT IT IS NOT SET FOR AN ALTITUDE LESS THAN THAT OF THE DIVE SITE!
4.4 DIVE SIMULATOR The simulation mode can be used to plan dives in advance, for demonstrational or educational purposes, or just for pleasure. The SOLUTION has complete dive simulating capabilities, including repetitive dives. The simulator can also be used between dives. The simulator will take into consideration the nitrogen loading from previous dives and modify the no-decompression times accordingly. The dive simulator is activated using the menu selection. Lift your fingers when dSI is displayed. When in simulation mode, the depth is controlled using the three water contacts. This has been described in detail in Section 2.3, "The Dive Simulator - For Easy Learning".

6. CARE AND MAINTENANCE The Suunto SOLUTION diving computer is a sophisticated precision instrument. Remember to treat it as such! It has been designed to withstand the rigors of scuba diving. It can be installed in a durable thermoplastic console boot and its display can be protected by a replaceable display shield. The user should wash and rinse the unit in fresh water after every use. Protect it from shocks, extreme heat or direct sunlight and chemical attack. The SOLUTION cannot withstand the impact of heavy objects like scuba cylinders, nor chemicals like acetone and alcohols (ethanol, isopropanol). NOTE: Keep the water contacts clean to assure correct operation of the SOLUTION. Store the SOLUTION in a dry place. NOTE: Frequently check the battery compartment for moisture trough the transparent battery cover of the SOLUTION. The SOLUTION should be serviced every two years or after 200 dives (whichever comes first) by an authorized dealer. This service will include a general operational check and the battery replacement. The service requires special tools and training. Therefore, it is advisable to contact an authorized Suunto dealer for biennial service. Do not attempt to do any service that you are not sure about how to do. The SOLUTION will display a battery symbol as a warning when the power gets too low. When this happens, the SOLUTION should not be used until the battery has been replaced (see also chapter 3.2.1 /Battery warning).
6.1 MAINTENANCE If left without care for an extended period, a thin film (often invisible to the eye) will cover the unit. Much like the buildup on the glass of an aquarium, this film is the result of organic contaminates found in both salt and fresh water. Suntan oil, silicone spray and grease will speed up this process. As a result of this buildup, moisture will be trapped next to the contacts and will not allow your SOLUTION to operate properly. The water contacts can be cleaned with a soft pencil eraser. IMPORTANT: The SOLUTION should be soaked, then thoroughly rinsed with fresh water after each dive. If the unit is mounted in a console boot, the entire console should be soaked in fresh water and then rinsed. Make sure that all salt crystals and sand particles have been
33 flushed out of the console. At the end of a dive trip, the SOLUTION should be rinsed thoroughly and then dried with a soft towel. If the unit is mounted into a console boot, the computer unit will need to be removed from the console and cleaned before storage. IMPORTANT: When removing the computer from the console, check the battery compartment for possible moisture or water. This is easily done through the transparent lid covering the compartment. DO NOT use the SOLUTION 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 SOLUTION in pressurized air.

6.2 BATTERY COMPARTMENT INSPECTION Frequently check for leaks in the battery compartment. This is important specially after the battery replacement. If you find moisture inside the transparent battery compartment lid, there is a leak. A leak must be corrected without delay, as moisture will seriously damage the computer, even beyond repair. Suunto does not take any responsibility for damage caused by moisture in the battery compartment, if the instructions of this manual are not carefully followed. In case of a leak immediately bring the SOLUTION to an authorized Suunto dealer/ distributor.
7. TECHNICAL DESCRIPTION 7.1 OPERATING PRINCIPLES The Suunto SOLUTION is a multi-functional sport diving instrument, which provides information on depths, times, and decompression requirements. Its electronic microprocessor mathematically models the absorption and release of nitrogen during all phases of diving, including ascents, surface intervals and repetitive dives. WARNING! DO NOT ATTEMPT TO USE THE SOLUTION WITHOUT FIRST READING THE ENTIRE OWNER'S MANUAL! The SOLUTION must be activated before diving and operated correctly to provide accurate and correct information. No-Decompression Limits The no-decompression limits displayed by the SOLUTION upon activation are for most dives to a single depth slightly more conservative than those permitted by the U.S. Navy tables, Tables 7.1-2. TABLE 7.1 NO-DECOMPRESSION TIME LIMITS (min) FOR VARIOUS DEPTHS [m] FOR THE FIRST DIVE OF A SERIES. High altitude/ personal adjustment mode A0 A1 A2 --5 5

Depth [m] 45

Table 7.2 NO-DECOMPRESSION TIME LIMITS (min) FOR VARIOUS DEPTHS [ft] FOR THE FIRST DIVE OF A SERIES. High altitude/ personal adjustment mode A1 A2 U.S. Navy --15

Depth [ft] 150

A0 --6 5
Unlike the U.S. Navy tables, the SOLUTION interpolates between depths, giving a diver "credit" for time spent in shallower water, rather than calculating no-decompression limits based on the maximum depth of a dive. As a result, nodecompression dive times permitted by the SOLUTION are often much longer than those that would be allowed by the U.S. Navy tables. WARNING! THE USER SHOULD BE AWARE THAT ANY DIVE, INCLUDING ONES WITHIN THE U.S. NAVY OR SOLUTION LIMITS, DOES CARRY SOME RISK OF DECOMPRESSION SICKNESS. Compartments and Half Times When you dive with the SOLUTION , it measures and displays depths and times as your dive progresses. It shows you available no-decompression time and possible decompression required based upon the following five factors: 1. your present depth, 2. excess nitrogen absorbed during earlier portions of the dive, 3. residual nitrogen remaining from previous dives, 4. the no-decompression limits that apply to that depth, 5. the altitude/ personal adjustment mode in use. Back on the surface, the SOLUTION will continue to calculate the nodecompression dive times available for various depths on the next dive. As the

36 surface interval increases, so does the available dive time for the next dive. To perform these calculations, the SOLUTION continuously models the absorption and release of excess nitrogen from theoretical compartments. Each compartment absorbs and releases nitrogen at a different rate. The compartments that absorb and release nitrogen rapidly are believed to have a high tolerance for excess nitrogen, whereas compartments that absorb and release nitrogen more slowly are believed to be more sensitive. The no-decompression limits in the U.S. Navy tables are based upon six theoretical compartments for single dives, and one compartment for surface intervals and repetitive dives. If you are familiar with table theory, you may know that they are characterized by half times (i.e. the time required for 50 % equilibration to a pressure change) ranging from 5 minutes to 120 minutes. The SOLUTION includes the same six compartments, and three additional compartments for an increased range of the mathematical model. The calculations are based on all nine compartments for all phases of diving, including surface intervals and repetitive dives. The SOLUTION 's half times range from 2.5 to 480 minutes. Altitude Diving The atmospheric pressure is lower at high altitudes than at sea level. After traveling to a higher altitude, the diver will have additional nitrogen in his body, compared to the equilibrium situation at the original altitude. This "additional" nitrogen is released gradually in time and equilibrium is reached within a couple of days. Before high altitude diving the SOLUTION must be set to high altitude diving mode to take this into account. The maximum partial pressures of nitrogen allowed by the mathematical model of the SOLUTION are reduced according to the lower ambient pressure. As a result the allowed no-decompression limits are considerably reduced. Surface Intervals The SOLUTION requires a minimum surface interval of 10 minutes between dives. If a surface interval is shorter than 10 minutes, the SOLUTION 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. In this regard, it is similar to the U.S. Navy tables.

Depth Limits WARNING! SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS LIMIT THEIR MAXIMUM DEPTH TO 40 m [130 ft]! However, the SOLUTION will calculate below that depth to provide a wide margin of flexibility if, through carelessness or emergency, you are forced to exceed this recommended depth limit for a dive.
7.2 TECHNICAL SPECIFICATION Dimensions and weight (wrist model): - Diameter: 61,5 mm [2,42 in] - Depth: 30 mm [1,18 in] - Weight: 110 g [0,24 lb] Depth Gauge: - Temperature compensated pressure sensor - Salt water calibrated (in fresh water the readings are about 3% smaller) - Depth display range: 0 to 99 m [325 ft] - Accuracy: 1 % (0 to 60 m [200 ft]) - Resolution: 0,1 m [1 ft] Temperature display: - Resolution: 1 [1,5 C F] - Display range: - 20. +50 [- 40. +122 C F] - Accuracy: 2 [ 3,6 within 20 minutes of temperature change C F] Calendar Clock: - Accuracy: 2 s /24 h - 24 h display [12 h display in imperial version] Other displays: - Dive time: 0 to 999 min - Surface time: 0 to 48 h - Dive counter: 0 to 99 - No-decompression time: 0 to 199 min (- - after 199) - Ascent time: 0 to 99 min (- - after 99) - Ceiling depths: 2,5 to 30 m [8 to 100 ft] Operating Conditions - Normal altitude range: 0 to 2400 m [8000 ft] above sea level - Operating temperature: 0 to 40 [32 to 104 C F F] - Storage temperature: -20 to +50 [-4 to +122 C C F F]
38 However, it is recommended that the unit be stored in a dry place at room temperature. NOTE: Do not leave the SOLUTION in direct sunlight! Battery - One 3,6 V lithium battery (Saft LS 14250), size 1/2 AA (ANSI) or 1/2 R6 (IEC), spare part number K5504 + O-ring 26,7 mm x 1,78 mm 70 ShA, spare part number K5508 - Battery life: typically 2000 hours (at 20 [68 C F])
8. WARRANTY NOTE: The warranty arrangements are different in different countries. Information is contained in the SOLUTION packaging regarding the warranty benefits and requirements applicable to your purchase. The Suunto SOLUTION 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: 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. If a claim under this or any other warranty appears to be necessary, return the product, freight prepaid, to your Suunto Dealer or qualified repair facility. Include your name and address, proof of purchase and/or service registration card, as required in your country. The claim will be honored and the product repaired or replaced at no charge and returned in what your Suunto Dealer determines a reasonable amount of time, provided all necessary parts are in stock. All repairs made, 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. All implied warranties, including but not limited to the implied warranties of merchantability and fitness for a particular purpose, are limited from 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 dealers or representatives beyond the provisions of this warranty. No dealer or representation is authorized to make any modifications to this warranty or to make any additional warranty. This Instruction Manual should be kept with your SOLUTION.

9. GLOSSARY Altitude dive A dive made at an elevation above 700 m [2300 ft] above sea-level. The speed at which the diver ascends toward the surface.
Ascent speed (rate) ASC SPEED
Abbreviation for ascent speed (ascent rate).
Ascent time The minimum amount of time needed to reach the surface in a decompression dive. ASC TIME Abbreviation for ascent time.
Ceiling On a decompression dive the shallowest depth to which a diver may ascend based on computer nitrogen load. Compartment DCS See "Tissue group".
Abbreviation for decompression sickness.
Decompression Time spent at a decompression stop or range before surfacing, to allow absorbed nitrogen to escape naturally from tissues. Decompression range On a decompression dive the depth range, between the floor and ceiling, within which a diver must stop for some time during ascent. 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 SOLUTION indicates some nitrogen loading is present. When nitrogen loading reaches zero the SOLUTION deactivates. Dive time Elapsed time between leaving the surface to descend, and returning to the surface at the end of a dive. Floor The deepest depth during a decompression dive at which decompression takes place. Half-time 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. Multi-level dive A single or repetitive dive that includes time spent at various
41 depths and whose no-decompression limits are not determined solely by the maximum depth attained. No-decompression time The maximum amount of time a diver may remain at a particular depth without having to make decompression stops or remain below a ceiling during the subsequent ascent. No-decompression dive the surface at any time. NO DEC TIME Any dive which permits a direct, uninterrupted ascent to
Abbreviation for no-decompression time limit.
Repetitive dive Any dive whose no-decompression time limits are affected by residual nitrogen absorbed during previous dives. Residual nitrogen more dives. SURF TIME The amount of excess nitrogen remaining in a diver after one or
Abbreviation for surface interval time.
Surface interval time Elapsed time between surfacing from a dive and beginning a descent for the subsequent repetitive dive. Tissue group Theoretical concept used to model bodily tissues for the construction of decompression tables or calculations.