HIGHER RISK DIVE PROFILES
The user must understand that all decompression devices (decompression tables and/or dive computers) are based on mathematical models and that many experts are currently concer ned that these models may not under certain conditions adequately describe the physiological phenomena. These conditions are presently identified as dives which incorporate the following (Fig. 1.1): SAWTOOTH PROFILES REVERSE PROFILES CONSECUTIVE DIVES where the diver alternates between greater and shallower depths repeatedly throughout the dive. where the diver spends most of the dive at shallow depths and then descends to the maximum depth shortly before surfacing. where the diver performs repetitive dives to approximately the same maximum depth with only short surface intervals between dives. The risk of decompres sion sickness increases when depth and the number of repetitive dives increase and when the surface intervals are decreased. repetitive dives performed for several consecutive days. any dive during which the no-decompression limit has been exceeded or the diver is advised by the computer that he may not return directly to the surface.
MULTIDAY DIVES DECOMPRESSION DIVES
DIVE PRACTICES WHICH INCLUDE THE ABOVE DESCRIBED HIGHER RISK DIVE PROFILES ARE BELIEVED TO INCREASE THE RISK OF DECOMPRESSION SICKNESS AND AS SUCH CONSIDERED POTENTIALL DANGEROUS Y AND SHOULD BE AVOIDED EVEN IF THEY CONFORM TO THE MATHEMATICAL MODEL!
DO NOT USE THE DIVE COMPUTER WITH NITROX MIX! The mathematical tissue calculation model of the instrument has been designed for use with standard breathing air only (approximately 21% oxygen and 79% nitrogen by volume). Therefore, the dive computer must not be used for diving with Nitrox or other mixed gases.
Consecutive dives Sawtooth profiles

Reverse profiles

Multiday dives
Fig. 1.1 HIGHER RISK DIVE PROFILES
Fig. 1.2 RECOMMENDED PROFILE
DIVE COMPUTER LIMITATIONS
While the instrument is based on current decompression research and technology, the user/ diver 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 model which is intended to serve as a guide to reduce the probability of decompression sickness. 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 this instrument should maintain no less than 10 minutes nodecompression 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 Oyj will assume any responsibility or liability for accidents or injuries which might occur for any reason.

2. GETTING ACQUAINTED WITH THE DIVE COMPUTER
READ AND UNDERSTAND THE ENTIRE OWNERS 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 owners manual before attempting to dive.

2.1 WATER CONTACTS

The dive computer has three water contacts on the face of the instrument: COM: PLAN/ON: TIME/MODE: common contact activation and dive planning contact time display and mode selection contact
On the surface the instrument 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.

A S C R A T E

CEILING ASC TIME

2.2 ACTIVATION

TIME MODE PLAN ON
SURF TIME NO DEC TIME MAX DIVE DIVE CF TIME

A0 A1 A2

The calendar clock is always shown on the display, when the dive computer is deactivated. In this mode the power consumption is minimal. The instrument is activated by touching the PLAN/ON and COM contacts (Fig 2.1). The f irst display, the STARTUP shows all available elements and immediately after this , the battery power indicator. A few seconds later the READY display will appear, showing zero values (Fig. 2.2). At this time, perform a precheck making sure that the dive computer operates cor rectly, that the low battery indicator is not on and that the personal/altitude adjustment setting is correct. If the battery symbol is displayed the dive computer should not be used (Fig. 2.3).
Fig. 2.1 ACTIV ATION Touch the PLAN/ON and COM contacts with moistened fingers.

SURF TIME C DIVE TIME

Fig. 2.2 READY DISPLAY

ME C DIVE TIME

Fig. 2.3 BATTERY WARNING The battery symbol indicates that the battery is too low for diving.
3. DIVING WITH THE DIVE COMPUTER
This section contains instructions on how to operate the dive computer 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 nstrument 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.

The instrument is always ready for use and will activate if submerged. However, it is necessary to turn it on before diving to check the personal/ altitude adjustment setting, battery power, etc. This is done, either by immersing it in water for a couple of seconds or by connecting the PLAN/ON and COM contacts with fingertips. When deactivated the time display is always shown. Once activated all display elements will turn on (showing mostly figure 8s and graphical elements) (Fig. 3.3). A few seconds later the battery power bar graph is shown (Fig. 3.4). Next, the screen will alternate between two READY displays, confirming that the activation is complete (Fig. 3.5). At this time, perform your precheck making sure that:
SURF TIME NO DEC TIME DIVE DIVE CF TIME
Fig. 3.3 STARTUP I All segments shown.
A S LOG HIS C ALT SET PLAN NO R A T A E S LOG HIS C ALT SET PLAN R A T E LOG HIS ALT SET PLAN
the dive computer operates and provides a complete display the low battery indicator is not on
Fig. 3.4 STARTUP II Battery power indicator. When two or less bar graph segments are shown the computer should not be used for diving. (First generation LUX/ LUX S computers: When four or less bar graph segments are shown the computer should not be used for diving. For further infor mation see NOTE on page 24.)
the personal/ altitude adjustment setting is correct The instrument is now ready for diving. If it is not taken on a dive after activation, it will automatically switch off to the time display in 10 minutes to conserve the battery power. The dive computer does not need to be reactivated for repetitive dives. It will remain active until it has calculated that all residual nitrogen has off-gassed. This may take up to 48 hours, as described in Section 6.1, Operating Principles.
PERSONAL ADJUSTMENT AND HIGH ALTITUDE DIVING WARNING!
SET THE CORRECT PERSONAL/ALTITUDE ADJUSTMENT MODE! When diving at altitudes greater than 700 m [2300 ft] the personal/altitude adjustment feature must be correctly selected in order for the computer to calculate no-decompression status. The diver should also use this option to make the calculations more conservative, whenever it is believed that factors which tend to increase the possibility of decompression sickness exist (see Section 3.6). Failure to properly select the personal/altitude adjustment mode correctly will result in erroneous data and can greatly increase the risk of decompression sickness.
THE DIVE COMPUTER IS NOT INTENDED FOR USE AT ALTITUDES GREATER THAN 2400 m [8000 ft]! Diving at altitudes above this limit may significantly increase the risk of decompression sickness. If you are diving at higher altitudes, make sure that the altitude mode has been set according to the altitude of your dive site. For information on how to select the correct altitude setting and how to use the personal adjustment, see Section 3.6, Personal Adjustment and High Altitude Dives.

3.3.2 Dive Planning

It is possible at any time on the surface to enter the DIVE PLANNING mode, simply by touching the PLAN/ON and COM contacts. The display will rapidly cycle through the no-decompression limits for various depths from 9 m [30 ft] to 45 m [150 ft] in 3 m [10 ft] increments (Fig. 3.6). It takes about 45 seconds to run through the complete cycle, after which the dive computer will automatically return to the READY display. Higher personal/ altitude adjustment modes will shorten the no-decompression time limits. These limits at different personal/ altitude adjustment mode selections are shown in Tables 6.1 and 6.2 in Section 6.1, OPERATING PRINCIPLES.
NO DEC TIME DIVE DIVE TIME
Fig. 3.6 DIVE PLANNING The no-decompression time limit at 30.0 m [100 ft] is 14 minutes in A1 mode.
DIVE NUMBERING SHOWN DURING DIVE PLANNING
Several repetitive dives are considered to belong to the same repetitive dive series when the dive computer has not deactivated itself. The first dive of the series will be numbered as DIVE 1, the second as DIVE 2, the third as DIVE 3 etc. (Fig. 3.7). When the surface time has been less than 10 minutes, the dives are considered to be the same. The dive number will not change for the second part of such a dive and the dive time will start where it left off.
Fig. 3.7 DIVE PLANNING The no-decompression time limit at 30.0 m [100 ft] is decreased to 5 minutes in A1 mode after the third dive of the series.
3.3.3 Calendar Clock Function
The calendar clock is always shown on the display, when the instrument is deactivated. Once the dive computer is activated the TIME display can be retrieved any time on the surface mode by touching the TIME/MODE and COM contacts for about two seconds. The current time and date will be shown for four seconds (Fig. 3.8).
Fig. 3.8 TIME DISPLAY The time is 10:30 [in case of imperial unit, A for a.m. and P for p.m. would be shown in the upper left corner of the display]. The date is 18.2 or February 18th. PLEASE NOTE: The date will always be displayed with the day of the month first, followed by the month.
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 Sec. 4.4, Setting Time and Date. In the metric version of the instrument, the 24-hour time system is used, while in the imperial version the 12-hour time system is used.

3.4 DIVING

3.4.1 Basic Dive Data
The dive computer will remain in the SURFACE mode at depths less than 1.2 m [4 ft] (first generation computers 1.8 m [6 ft]). At depths greater than 1.2 m (1.8 m first generation computers) the instrument will go into the DIVE mode. Each piece of information on the display is clearly marked (Fig. 3.9). During a nodecompression dive, the following information will be shown: the available no-decompression time (a) in minutes is shown as NO DEC TIME. It is calculated based on the five factors listed in Section 6.1, OPERATING PRINCIPLES. your present depth (d) is shown in meters [ft]. the elapsed dive time (f) in minutes in the lower right corner, shown as DIVE TIME.

RAPID ASCENTS INCREASE THE RISK OF INJURY! Do not exceed the maximum recommended ascent rate. You must never surface with the SLOW warning on. If you do this, the warning will continue to flash until the unit deactivates itself in the normal manner. This may take up to 40 hours.
DO NOT ATTEMPT TO DIVE FOLLOWING A SURFACE INTERVAL DURING WHICH THE SLOW INDICATOR REMAINS ACTIVATED! Violation of the maximum ascent rate may invalidate the calculations for the next dive. NOTE: SUUNTO highly recommends a safety stop at the end of every dive in the range of 3 m - 6 m [10 ft - 20 ft] for 3 - 5 minutes.

3.4.4 Alarms

The standard and LUX models feature visual alarms, and the LUX S visual as well as audible alarms, to alert you when you are approaching dangerous situations. Potential danger situations during a dive, occurs when: the no-decompression dive tur ns into a decompression dive. One arrow pointing upwards and the ascend warning CEILING/ASC TIME will appear (Fig. 3.14). LUX S model gives also an audible alarm: three single beeps. Immediate danger, happens when: the maximum allowed ascent rate, 10 m/min [33 ft/min], is exceeded. A blinking SLOW warning will alternate with the depth display (Fig. 3.13). LUX S model gives also an audible alarm; continuous beep. the ceiling depth is exceeded. A downward pointing ar row and a blinking error warning Er will appear (Fig.3.17). LUX S model gives also an audible alarm: continuous beep. You should immediately descend to or below the ceiling. The dive computer will otherwise enter a permanent error mode in three minutes, indicated by a non-blinking Er. the ceiling descends to 10 m [30 ft]. A blinking error warning Er appears. You should immediately ascend to or below the ceiling. the ceiling descends to 12 m [39 ft]. A permanent error warning Er appears. In this mode the instrument can only be used as a depth gauge and timer.
The permanent ERROR MODE is shown by a non-blinking Er in the center display. Once in ERROR MODE, the dive computer will continue to display current depth and dive time. You should immediately ascend to a depth of 3 to 6 m [10 to 20 ft] and remain at this depth until air supply limitations require you to surface. When the surface has been reached, no further diving or flying should take place for a minimum of two days.
3.4.5 Decompression dives
DO NOT USE THIS INSTRUMENT TO CONDUCT DECOMPRESSION DIVES! Suunto does not recommend this instrument to be used to conduct decompression dives. However, if through carelessness or emergency a diver is forced to exceed the no-decompression limits on a dive, the dive computer will provide 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 permits you to decompress within a range of depths.

Fig. 3.14 DECOMPRESSION DIVE, BELOW THE CEILING ZONE The minimum ascent time is 4 minutes. The upward pointing arrow tells you to ascend. The ceiling is at 3 m [10 ft].

A S R A T E

C a CEILING ASC TIME

BACKGROUND

When your NO DEC TIME becomes zero, your dive becomes a decompression dive, i.e. you must perform one or several decompression stops on your way to the surface. The NO DEC TIME on your display will be replaced by a flashing notation CEILING/ ASC TIME (Fig. 3.14).
Fig. 3.15 DECOMPRESSION DIVE, AT THE CEILING ZONE The two arrows (a) point at each other ("hour glass"). You are at the ceiling zone at 3.5 m [11 ft] (c) and your minimum ascent time is 3 minutes (d). The ceiling is at 3 m [10 ft] (b).
YOU SHOULD ASCEND AND BEGIN DECOMPRESSION IMMEDIATELY WHEN THE DIVE COMPUTER SHOWS YOU THAT DECOMPRESSION IS REQUIRED! Note the upward pointing arrow.
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. NOTE: Ascent time is not displayed in the Octopus II dive computer (see Figure 3.16).
YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DISPLAYED ON THE DIVE COMPUTER. 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.
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. The ceiling zone is the shallowest depth range to which you should ascend when in decompression.
C a R A T E CEILING ASC TIME
DISPLAY BELOW CEILING ZONE
The CEILING/ASC TIME symbol and upwards pointing arrow indicate that you are below the ceiling zone (Fig. 3.14). You should start your ascent immediately.

DISPLAY AT CEILING ZONE

When you reach the ceiling zone, the display will show you two arrows pointing toward each other (the hour glass icon, Fig. 3.15). The two ar rows pointing toward each other will be shown between the minimum ceiling and 1.8 m [6 ft] below the minimum ceiling. All decompression stops must be performed at or below the ceiling depth range. The depth of the ceiling will depend on your dive prof ile. It will be fairly shallow when you enter the decompression mode, but if you remain at depth, it will move downward and the ascent time will increase. The ceiling depth will be shown on the left side of the center window.

3.7 ERROR CONDITIONS

The instrument is provided with warning indicators that advise the user to react to certain situations that would otherwise give rise to a significantly increased risk of decompression sickness if left unattended. If you do not respond to its warnings, it will enter a permanent ERROR MODE, indicating that the risk of decompression sickness has greatly increased. If you understand and operate the dive computer sensibly, it is unlikely that you will ever put the instrument into the ERROR MODE. The permanent ERROR MODE is shown by a non-blinking Er in the center display. Once in ERROR MODE, the dive computer will continue to display current depth and dive time. You should immediately ascend to a depth of 3 to 6 m [10 to 20 ft] and remain at this depth until air supply limitations require you to surface. When the surface has been reached, no further diving or flying should take place for a minimum of two days.

OMITTED DECOMPRESSION

The most common ERROR MODE results from omitted decompression, when the diver stays above the ceiling for more than three minutes. During this three-minute period the Er warning will blink alternating with the CEILING/ASC TIME display. The instrument will continue to function normally, if the diver descends below the ceiling within three minutes. After this the dive computer will enter a permanent ERROR MODE. In the permanent ERROR MODE the instrument will not show no-decompression or ascent times. Only a permanent Er warning is shown in the center window. However, all the other displays will function as before, to provide information for ascent. At the surface mode, the CEILING/ASC TIME symbol will blink in the center window and at the dive planning mode a permanent Er is shown instead of no-decompression times.
EXTREME CEILING DEPTH OR DECOMPRESSION RANGE
When the ceiling descends to the depth of 10 m [30 ft] or when the ASCent TIME is longer than 63 minutes, the Er warning will start to blink in the center window. If the diver immediately ascends, the dive computer will continue to function normally after the ceiling is back to below 10 m [30 ft] or the ASCent TIME is shorter than 63 minutes. If the ceiling descends to the depth of 12 m [39 ft] even momentarily the instrument will enter the permanent ERROR MODE. NOTE: Ascent time is not displayed in the Octopus II dive computer.

4. MENU BASED MODES

The menu based functions include the logbook and history memories, the personal/altitude adjustment setting, and the date and time setting. The menu based functions are activated using the water contacts. Keep your fingers on the TIME/MODE and COM contacts while the dive computer scrolls through the menu (Fig. 4.1).

The desired mode is selected by breaking the finger contact when the desired mode appears on the display:
LOG: HIS: Alt: Set: Logbook Memory. The Logbook gives a summary of the nine most recent dives. Dive History Memory. The Dive History is a summary of all dives recorded by the instrument. Personal/Altitude Adjustment setting Date and Time Setting

A S C R A T E SET PLAN

When scrolling through the menu, a bar segment on the bottom of the display will indicate the scrolling sequence. Make sure that the contacts and the instrument itself are dry and clean before trying to use the menu based modes. NOTE: The menu based modes can be activated only when 10 minutes have elapsed after the dive. All menu based modes can be deactivated by the RETURN command, i.e. by connecting all three contacts simultaneously, or by immersing the dive computer in water.
Fig. 4.1 MENU The instrument will scroll through the above displays.

4.1 LOGBOOK MEMORY

The dive computer has a sophisticated high capacity Logbook Memory. Dives shorter than one minute are not registered. The logbook memory is activated by touching the TIME/MODE and COM contacts until LOG appears. It will give access to the nine most recent dives made. The following information will be shown on three alternating displays (Fig. 4.2 - 4.5):

LOG HIS ALT SET

Fig 4.2 LOGBOOK, DISPLAY I This display will alternate between DISPLAYS II and III. The maximum depth (a) of the second recent dive (c) was 28.6 m [94 ft] and the total dive time 29 min (e). The personal/altitude adjustment mode was set to A1 (d) and the minimum no-decompression time during the dive was 3 minutes (b).
DISPLAY I, main display (Fig. 4.2):
maximum depth (a) dive number (c) dive time (e) personal/altitude adjustment setting (d) the minimum NO DEC TIME or maximum ASC TIME reached during the dive (b) SLOW if the diver has surfaced with this warning on downward pointing arrow if the ceiling was violated Er in the center window, if the ceiling was violated permanently (over 3 min) or if the 12 m [39 ft] ceiling was reached or if the ASC TIME was over 63 min.
NOTE: Ascent time is not displayed in the Octopus II dive computer.

DISPLAY II (Fig. 4.3):

average depth (a) surface interval time before dive (b) temperature at the maximum depth (c) dive time

SURF TIME DIVE TIME

DISPLAY III (Fig. 4.4):

dive entry time and date

The average depth of the dive was 18.2 m [60 ft] (a), surface interval time before the dive 10 h 38 min (b) and temperature at the maximum depth 20C [68F] (c).
The data of the most recent dive is shown first as DIVE 1 (the first dive in the memory). Preceding dives are recalled by touching the TIME/MODE and COM contacts. A brief touch of the contact will bring you to the previous dive (DIVE 2), continuous contact scrolls backwards through the dives (DIVE 3,. DIVE 9, DIVE 1 again etc.). Only DISPLA I is shown, while scrolling the dives. The desired dive is selected by breaking the Y contact when that dive appears on the display. When new dives are added after nine dives, the oldest dives are deleted. The memory will always retain the nine most recent dives. The contents of the memory will remain even when the batter y is changed (assuming that the replacement has been done according to the instructions).

Fig 4.4 LOGBOOK, DISPLAY III The dive started on the 18th of August (8) at 8:26 [when set to imperial version, A for a.m or P for p.m. are also shown in the upper left corner of the display].

A b S C R A T c E

NOTE: The dive numbers shown in the dive planning mode do not match the ones shown in the logbook.

CEILING

ASC TIME
In the dive planning mode the dives are numbered according subsequent repetitive dives within a dive series, whereas in the logbook the dives are numbered according memory address. NOTE: The logbook contains test dives made in the factory. These dives will be deleted after you have performed nine dives.
Fig 4.5 VIOLATION DISPLAYS IN THE LOGBOOK, DISPLAY I Display I shows SLOW warning (a) for surfacing with the SLOW warning on, a downward pointing arrow for a violated ceiling (b), CEILING/ ASC TIME symbol (c) for decompression dive. Er in the ASC TIME display (d) is shown, if the ceiling was violated over 3 min, or if the ceiling depth was over 12 m [39 ft] or if the ascent time was over 63 min.

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 (Fig. 4.6): the maximum depth ever reached (a) the total number of dives (b) the total accumulated dive time in hours (c) 999 dives and 999 hours of diving can be registered. When these maximum values are reached, the counters will start again from 0.
NOTE: The maximum depth will be zeroed, if the depth of 97.6 m [320 ft] is exceeded. NOTE: The dive and dive time counters in the History Memory contain some test dives made in the factory (e.g. DIVE 2, DIVE TIME 1 h). The maximum depth is, however, zeroed.

C a R A T E

Fig. 4.6 DIVE HISTORY The maximum depth ever reached is 33.0 m [108 ft] (a), the total accumulated dive time 29 hours (c), and the total number of dives 36 (b).
Fig. 4.7 PERSONAL/ALTITUDE ADJUSTMENT SETTING, STEP 1 The cur rent mode is A1.
4.3 PERSONAL/ALTITUDE ADJUSTMENT SETTING
The current personal/altitude adjustment mode is shown when diving as well as on the surface display. If the mode is not correct (see Chapter 3.6), it is imperative that the diver enter the correct selection before diving. The new personal/altitude adjustment setting is entered in the following way. In these figures the contacts which are connected are shadowed. 1. Activate the personal/altitude 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 personal/altitude adjustment setting is shown (Fig. 4.7). 2. Connect the PLAN/ON and COM contacts until all three personal/ altitude adjustment modes appear. Release your fingers immediately at this point. The current mode is now blinking (Fig. 4.8). Wait at least two seconds but not more than four seconds before the next step. 3. Connect again the PLAN/ON and COM contacts until the blinking personal/altitude adjustment mode starts to scroll. Release your fingers when the desired mode is blinking (Fig. 4.9). Wait at least two seconds but no more than four seconds before next step.

Fig. 4.14 TIME SETTING Scrolling through hours, minutes, month and date, TIME/MODE & COM.
Fig. 4.15 TIME SETTING Adjusting the ten minute reading (blinking), PLAN/ON & COM.

5. CARE AND MAINTENANCE

The dive 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 instrument 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 dive computer. Store the instrument in a dry place. NOTE: Frequently check the battery compartment for moisture through the transparent battery cover of the instrument especially after the battery replacement. The dive computer should be serviced every two years or after 300 dives (whichever comes first) by an authorized dealer. This service will include a general operational check and 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 servicing that you are not trained for. The instrument will display a battery symbol as a warning when the power gets too low. When this happens, the dive computer should not be used until the battery has been replaced (see also chapter 3.3.1 /Battery Warning).

5.1 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 dive computer to operate properly. The water contacts can be cleaned with a soft pencil eraser. IMPORTANT: The instrument 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 flushed out of the console. At the end of a dive trip, the dive computer 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 instrument if you detect any moisture or water inside.

COMPARTMENTS AND HALF TIMES
When you dive with the instrument, 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 personal/altitude adjustment mode in use. Back on the surface, the dive computer will continue to calculate the no-decompression dive times available for various depths on the next dive. As the surface interval increases, so does the available dive time for the next dive. To perform these calculations, the dive computer 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 instrument includes the same six compartments, and two additional compartments for an increased range of the mathematical model. The calculations are based on all eight compartments for all phases of diving, including surface intervals and repetitive dives. The dive computers half times range from 2.5 to 320 minutes. The multi-level tissue calculations are based on modified Haldanean principle.

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 instrument 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 dive computer are reduced according to the lower ambient pressure. As a result the allowed no-decompression limits are considerably reduced.

SURFACE INTERVALS

The dive computer requires a minimum surface interval of 10 minutes between dives. If a surface interval is shorter than 10 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. 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 dive computer 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.
6.2 TECHNICAL SPECIFICATION
DIMENSIONS AND WEIGHT (WRIST MODEL):

Diameter: 61.5 mm [2.42 in] Depth: 29 mm [1.14 in] Weight: 105 g [0.23 lb]

DEPTH GAUGE:

Temperature compensated pressure sensor Salt water calibrated (in fresh water the readings are about 3% smaller) Depth display range: 0 to 90 m [295 ft] Accuracy: 1 % FS (0 to 60 m [200 ft] at 20C [68F]) Resolution: 0.1 m [1 ft]

TEMPERATURE DISPLAY:

Resolution: Display range: Accuracy: 1 C [1.5F] - 20. +50C [- 40. +122F] 2 C [ 3.6F] within 20 minutes of temperature change

CALENDAR CLOCK:

Accuracy: 2.5 s /24 h 24 h clock display [12 h display in imperial version] day and month

OTHER DISPLAYS:

Dive time: Surface time: Dive counter: No-decompression time: Ascent time: Ceiling range: 0 to 199 min (999 dive hours in the history memory) 0 to 39 h 59 min 0 to 255 dives (999 dives in the history memory) 0 to 199 min (- - after 199) 0 to 63 min (- -/Er after 63) NOTE: Ascent time is not displayed in Octopus II dive computer. 3 to 9 m [10 to 30 ft]: blinking Er (ERROR) from 10 to 12 m [30 to 39 ft], after that permanent Er (ERROR) mode

OPERATING CONDITIONS

Normal altitude range: 0 to 2400 m [8000 ft] above sea level Operating temperature: 0 to 40C [32F to 104F] Storage temperature: -20C to +50C [-4F to +122F] It is, however, recommended that the unit be stored in a dry place at room temperature. NOTE: Do not leave the instrument in direct sunlight!

BATTERY

One 3.0 V lithium battery (Varta CR 1/2 AA ), size 1/2 AA (ANSI) or 1/2 R6 (IEC), spare part number K5546 + O-ring 26.7 mm x 1.78 mm 70 ShA, spare part number K5508 Battery life: typically more than 3000 hours (at 20C [68F])

LUX/LUX S MODELS

One 3.6 V lithium battery, 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 more than 2500 hours (at 20C [68F]). The use of the backlight shortens the typical expected battery life.

7. WARRANTY

NOTE: The warranty arrangements are different in different countries. Information is contained in the dive computer packaging regarding the warranty benefits and requirements applicable to your purchase. The Suunto dive computer is warranted against defects in workmanship and materials for a period of two years after purchase to the original owner subject to and in accordance with the terms and conditions set forth below: 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 expense. This warranty is non-transferable from the original owner. s 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. Battery replacement is not covered by this warranty. This Instruction Manual should be kept with your dive computer.

COMBOS AND MECHANICAL INSTRUMENTS INSTRUCTION MANUAL
Combo Consoles Console Compasses CB-71 and CB-71/DS Depth Gauge SM-16 Pressure Gauge SM-26 and SM-36

General Instructions

Suunto diving instruments are constructed of high quality materials and are designed for normal recreational use. The product should provide many years of reliable service if the user observes the necessary precautions in the following directions

SUUNTO Combo Consoles

Introduction The Suunto combo consoles allows you to create a personal combo according to your own specific needs. Analog gauges, dive computers and compasses fit together like building blocks, giving the possibility to add as many instruments as you like. The Suunto Combo modules and instruments can be combined in an almost infinite amount of combinations, and allow you to change or upgrade your combo configuration. The new combos consist of four main modules: the pressure gauge module, the instrument module and two different compass modules. The pressure gauge module is designed for the Suunto pressure gauges and it can also be used with the new Suunto Quick Release (QR). The instrument module can be fitted with Suunto dive computers or with the newly designed Suunto analog depth gauges. Depending on the users choice, an SK-7 compass module can either be fitted on the back side of the pressure gauge module or on top of the pressure gauge or instrument module. The basic combinations are displayed below:
Assembling the Combo Modules The Combo modules are to be assembled in the order described by the illustration below:
1. CB-One module front cover with SM-26/36 pressure gauge in place (see section CBONE Module assembly) 2. CB-In line module front cover 3. CB-end piece or CB-71 compass (optional) 4. CB-In line module back cover with instrument 5. CB-One module back cover or CB-71/DS compass (optional)
CB-ONE Module Assembly The CB-ONE Module is designed to fit the Suunto SM-26/36 analog pressure gauges.
Before assembling the CB-ONE module the hose cover needs to be fitted on the pressure hose. The hose cover ensures that the SM-26/36 pressure gauge fits properly on the CB-ONE module.
If the Suunto Quick Release is used, the hose cover is not to be used (See section CBONE module assembly using the SUUNTO Quick Release). After attaching the hose cover the pressure hose and gauge are assembled on the CBONE front cover according to the picture.
After the pressure gauge is in place the CB-ONE back cover (or alternatively the CB71/SK-7/DS compass) is attached with four screws.
CB-ONE Module Assembly when using the SUUNTO Quick Release If the SUUNTO Quick Release (QR) is used the hose cover should be attached on the high pressure hose below the female end of the QR. The male part is attached to the
pressure gauge which is then fitted onto the CB-ONE front cover according to the picture below.
CB-IN-LINE Module Assembly The CB-IN-LINE module fits the Suunto Vyper, Solution, Favor/Fusion, Octopus II and Companion dive computers or the SM-16 round depth gauge. The Vyper locks in place on the IN-LINE module back cover. For the other instruments there are lugs on the back cover aiding the orientation.

The Solution, Favor and Companion can be fitted with display shield V5615. The display shield is attached after the console has been assembled by bending the console so that the shield fits between the computer and the console cover. The Vyper is delivered with a pre-attached display shield (V5875).
SUUNTO Console Compasses CB-71/SK-7/STD and CB-71/SK-7/DS
The high-quality, liquid-filled Suunto diving compasses are durable, reliable and easy to use. The CB-71/SK-7 is available in two versions: the CB-71/SK-7/STD for attachment on top of the combo modules or the Cobra dive computer, and the CB-71/SK-7/DS for attachment on the back side of the CB-ONE module. Compass use for divers General instructions Usually a compass must be held precisely in a horizontal position, otherwise the needle will sting. The SK-7 compass may however be inclined about 30 degrees. Sighting a compass bearing Hold the compass so that the compass is in a horizontal position and the direction line points away from you. Turn with the compass until the direction line points at your destination, then turn the direction ring until the magnetic North needle is aligned between the slit marks. The front end of the direction line on the SK-7 shows your compass bearing, and as long as the North needle is aligned between the slit marks, the direction points toward your destination. The SK-7 compasses also have a side reading window, which also enables you to take a bearing by directing the compass towards the destination and by reading the compass bearing from the side window. This bearing can be memorized by turning the direction ring to that bearing. Setting a given bearing or direction The scale division on the SK-7 is 360 degrees clockwise from 0 degrees at North. Turn the direction ring until the front end of the direction line is at the desired direction. Turn the compass until the needle falls between the slit marks. The direction line now points in the desired direction. Magnetic declination Maps and marine charts are drawn in correlation to the geographic poles, while the magnetic compass needle is subject to magnetic declination which varies according to the location. General orientation on the diving site Before diving, check the main compass bearings at the dive site, paying special attention to memorizing the direction of the shoreline and bearings of landmarks that may be of importance. Natural aids to underwater navigation The underwater extension of the shores inclination tells the diver if he is following the shoreline. Be careful however as underwater ridges may lead you astray. Surface occasionally to check your position. The dip and stratification of rocks on the shore can often be followed over large areas under water Sand ripples usually form long lines parallel to the shore The direction of currents should be noted by their effect on algae or drifting particles. Use the compass to check the bearing of the current In shallow water, the suns direction can be seen from shadows on the bottom, or by looking towards the surface

Swimming in a straight line along the bottom is greatly facilitated if you can line up three distinctive objects in your line of vision. As you reach the first one, line up a new one farther away, so that you again have three points determining your course. This way you can counteract the effects of side current.

SUUNTO Mechanical Gauges

Suunto depth gauge SM-16 Models available: 45 m, 70 m, 150 ft, 230 ft Suunto pressure gauge SM-26 Models available: 200bar Suunto pressure gauge SM-36 Models available: 300bar and 4000psi Before usage Depth gauge: Before diving, check the position of the depth indicating pointer. Atmospheric conditions (altitude, temperature) may cause the point to not indicate zero. If this is the case, turn the adjusting screw located at the right side of the gauge to align the pointer to zero. The adjustment is to be made at the temperature of usage. Repeated unnecessary adjustments may cause excessive wear to the seals and eventual leakage. CAUTION! Do not attempt to adjust the water entry port located at the left side of gauge. Tampering with the port can cause damage to internal components. Do not pressure test gauge in air. Always immerse the gauge in water while pressure testing it. Pressure gauge: The hose has an end fitting with 7/UNF-thread. If your regulator has a different thread size in the high pressure (HP-output) port, ask your dealer for the correct adapter. Always inspect the o-ring at the male thread to be sure it is clean and undamaged before connecting it to the regulator. Always turn your air supply on slowly. Always turn the pressure gauge dial face away from your face when turning on the air supply. Do not overtighten the hose at the gauge, the fitting is pressure proof even when tightened with fingers. Service Avoid subjecting the gauges to excessive shock loads such as those that might occur from being dropped or hit against an immovable object. Do not subject the gauges to
pressures beyond their maximum range. Temperature extremes can be damaging. In general, the gauges should not be exposed to temperatures to which you would not expose yourself. After use: Rinse the gauges or the console with fresh water and store them out of direct sunlight, in a dry place at room temperature. CAUTION! Do not attempt to clean the gauges with anything other than water. Use of cleaning agents or compressed air can cause permanent damage. The introduction of any probe into the water entry port of the depth gauge or the pressure relief valve opening of the pressure gauge can also damage internal components. Before prolonged storage the instruments should be removed from the console, rinsed with fresh water and stored separately. CAUTION! Do not attempt to disassemble the gauges. Special tools and training are required to perform the adequate service. The instruments must be serviced by an authorized dealer every second year or after 200 dives (whichever comes first). Operating and Storage Temperatures SM-16 SM-26 and SM-36 Operating temperature 0 C to 40 C [32 F to 104 F] Storage temperature -20 C to 50 C [-4 F to 122 F] Operating and storage temperature 0 C to 40 C [32 F to 104 F]

Technical Specifications The Suunto depth gauge SM-16 complies with the prEN 13319 standard. The tolerances for depth gauges are: At 3m At 6m At 9m At 15m At 30m At 45m At 60m +0.8 / -0.4 m +0.8 / -0.4 m 0.8 m +1/ -1.2 m +1/ -1.2 m +1/ -1.5 m +1 / -1.5 m
The SM-26 and SM-36 pressure gauges comply with the EN 250 standard.
The tolerances for pressure gauges, measured at decreasing pressure are: At 40 bar At 100 bar At 200 bar At 300 bar 5 bar 10 bar 10 bar 10 bar
SUUNTO OY Valimotie 7 FIN-01510 Vantaa Finland Tel.+358-9-875870 http://www.suunto.com