IMPORTANT SAFETY NOTICES U.S. Consumer Product Safety Commission (CPSC), Office of Information and Public Affairs, Washington, D.C. 20207
Voluntary Recall UWATEC is conducting a voluntary recall of the Smart PRO and Smart COM dive computers. A software programming error can render audio and some visual alert signals inoperable, and under certain conditions, the screen freezes. You can determine if you have one of these units by looking for the "Smart" name on the front of the computers. For safety reasons, we ask that you stop using the dive computer immediately. Replacement Program UWATEC will replace your Smart PRO or Smart COM computer with a new one within ninety (90) days or sooner. In order to obtain a replacement, send an email with the required information below. After we obtain your name, address, and telephone number, UWATEC will send you a return shipping box and UPS shipping label. All you will need to do is to place the Smart PRO or Smart COM dive computer in this box, seal the box, attach the UPS label, and drop it off at any UPS shipping location. Once we have received your computer, we will begin processing your replacement order.
To contact SCUBAPRO UWATEC, please send your email to recallinfo@scubapro.com and include the following information: Name Address Phone number where you can be reached Model Serial Number Name of the retail store
Recalled Smart Com and Smart Pro dive computers can be easily identified by the serial number which is imprinted on the front of the computer. (located under the plastic screen protector) Serial numbers numerically lower than 03070000000 are recalled.
Example: Recalled- 03012034221 Not Recalled- 03080442011 All units with serial numbers with less than 11 digits are also recalled. Example: 1204011 Additionally, the location of the serial number can also help to identify a recalled and non recalled unit.

(see fig C below)

location of serial number on non-recalled Coms
location of serial number on recalled Pros
location of serial number on non-recalled pros

Figure C

location of serial number on recalled coms

Smart PRO Smart COM

SWISS MADE BY UWATEC AG

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Operating Manual

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Safety considerations

You must carefully read and understand this entire manual before using your new computer. Diving has many inherent risks. Even if you follow the instructions of this manual in a careful manner, it is still possible that you may be seriously injured or die from decompression sickness, oxygen toxicity or some other inherent risk of scuba with Nitrox or compressed air. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use the computer!

WARNING

Guidelines for the use of your UWATEC dive computer: The following guidelines are derived from the latest medical research and the recommendations of the American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness or oxygen toxicity will not occur. This computer is designed for dives with Nitrox (to a max.100% O2) and compressed air (21%O2) only. Do not use the computer for dives made with other mixed gases. It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not exceed 1% O2. An incorrect gas mixture can be lethal! Only use this computer with open circuit breathing systems. The computer must be set for a determined gas mixture. Only use this computer for diving with an independent breathing apparatus. The computer is not designed for long term exposures with Nitrox. Always observe the visual and audible alarm signals of the computer. Avoid situations of increased risk which are marked with a warning sign in this operating manual. If the ascent arrow appears, start to ascend. If the flashing ascent arrow appears, start to ascend immediately. This computer has a ppO2 warning, the default limits of which are set at 1.4 bar ppO2max. This limit can be adjusted via SmartTRAK. An alteration of the ppO2max to higher than 1.6 bar is dangerous and we do not recommend this. Frequently check the "oxygen clock" (CNS O2), especially in the range higher than 1.4 bar ppO2. Ascend and finish the dive if the CNS O2 exceeds 75%. Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use. Always check the diving limits considering the oxygen content and standard sports diving procedures (decompression sickness, oxygen toxicity). In accordance with the recommended maximum diving limit of all instructional agencies, do not dive deeper than 40 metres/130 feet. The danger of nitrogen narcosis has to be taken into consideration. The computer gives no warning about this. On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5 metres (15 feet). All divers using dive computers to plan dives and indicate or determine decompression status must use their own computer, which they take with them on all dives. If the computer fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft) should be initiated immediately. Comply with the ascent rate and carry out any decompression stop required. If the computer should fail for any reason, you must ascend at a rate of 10m (30 feet) per minute or less. On any given dive, both divers in a buddy pair must follow the most conservative dive computer for that particular dive. Never dive without a buddy. The computer does not substitute for a dive buddy. Only make dives that are appropriate to your level of dive training. A dive computer does not increase your knowledge of diving. Always dive with back-up instruments. Make sure that you always use back-up instrumentation including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have access to decompression tables whenever diving with a dive computer.

UWATEC Smart dive computers
Avoid repeated ascents and descents (yo yo diving). Avoid repeated heavy workload while at depth. Plan the dives to be shorter if they are made in cold water. After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should be as slow as possible. You MUST be familiar with all signs and symptoms of decompression sickness before using this computer! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay between the onset of symptoms and the treatment for decompression sickness. Only dive with Nitrox after you have been thoroughly instructed by a recognised institution. Repetitive dives Do not start your next dive before your CNS O2% status has dropped below 40%. Diving with Nitrox: make sure your surface interval is long enough (just like diving with compressed air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient time to leave the body. Match gas mixture to the intended dive. is visible on the display. Do not attempt a repetitive dive if the microbubble warning Plan a day without diving once a week. If you have to change computers, wait at least 48 hours before carrying out your next dive.
Altitude and diving Do not dive at altitudes higher than 4000 m (13000 ft). After a dive do not rise to altitudes that the computer prohibits via the flashing altitude segments (see page 21). Flying after diving After diving, wait at least 24 hours prior to flying.
The Smart PRO and Smart COM dive instruments are personal protective equipment in compliance with the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified their conformity with the European Standard EN 13319:2000 and, limited to Smart COM with the European Standard EN 250:2000. EN250:2000 Respiratory equipment - Open-circuit self contained compressed air diving apparatus Requirements, testing, marking (pressure gauge test). EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope.

Introduction

Congratulations on purchasing a Smart PRO or Smart COM dive computer and welcome to UWATEC. From now on you will enjoy the assistance of the most extraordinary dive computer - equipped with UWATEC's most innovative technology - while diving. This operating manual provides full information on the operation and functions of UWATEC Smart PRO and Smart COM dive computers. To make this manual easier to read we will use the term Smart as an abbreviation for UWATEC Smart PRO diving computer and UWATEC Smart COM diving computer throughout this booklet. Information which is valid only for Smart COM is marked with COM. We thank you for choosing Smart and we hope you will enjoy safe dives in the future! Further information on UWATEC Smart dive computers and other products by UWATEC can be found on our web page at www.uwatec.com. Safety considerations Dive computers provide divers with data; they, however, do not provide the knowledge how this data should be understood and applied. Dive computers cannot replace common sense! You must therefore carefully read and understand this entire manual before using your Smart.

Important remarks concerning signal words and symbols
This operating manual makes use of the following icons to indicate especially important comments: Remarks Information and tips which are important for optimal use of the functions of Smart.

Danger!

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
The following symbols are used in the operating manual: Flashing display -> Page reference e.g. ->10
COM Information valid only for Smart COM
Audible signals 4 sec Audible attention signal Audible alarm signal
Instructions for manual input +E B Operating instruction for manual input Example: bridging contacts B and E
4/2005, Copyright by UWATEC Switzerland

Quick reference

O2 mix icon (input) Logbook icon Dive planner icon Temperature Do not dive icon / Microbubble warning

Current depth

Ascent obligation Altitude sections Too fast ascent

Maximum depth

MAX.DEPTH

S L O W

Microbubble level icon (input / MB level reduced) Ready for input (O2 mix, MB level) Service icon

DIVE TIME

O2 mix / Microbubble level / Battery capacity Do not fly icon Dive time / No-fly time Logbook indicator Total ascent time / Dive number

CNS O2%

DECO STOP LEVELSTOP NO STOP

ft h m

DECO INFO
Ascent time icon Desaturation time indicator
Decompression stop obligation Ignored decompression stop Level stop indicator No-stop indicator Decompression stop indicator

TANK DATA

No-stop time / Decompression stop duration MB no-stop time / Level stop duration Duration of microbubble warning Desaturation time / Duration of surface interval Decompression depth / Level stop depth Oxygen toxicity CNS O2% / Ascent rate
Tank pressure warning Increased workload warning

psi bar RBT

Tank pressure / Gas consumed Remaining Bottom Time RBT RBT warning

Operating scheme

Start / Enter + / Navigate / Navigate

Dive planner

MAX.DEPTH DEPTH DIVE TIME

Display switched off

Logbook
Switching on 9 COM Tank pressure >8bar/116psi
Display switches off automatically after 3 minutes without operation. The backlight can be switched on by pressing Smart PRO above the display, and Smart COM at the right hand side of the display.

O2 mix

Microbubble level 22

Navigation

MAX.DEPTH DECO INFO

+ Surface interval

DEPTH DIVE TIME

Battery capacity

NO STOP

+ Bottom time

+ Dive number

Percentage of oxygen

Microbubble level

Confirmation

List of chapters
I Safety considerations Introduction Important remarks concerning signal words and symbols Quick reference / Operating scheme List of chapters System and operation System description Operation 2.1 Operating elements 2.2 SmartTRAK 2.3 Switching on the display 2.4 Checking the battery capacity 2.5 Selection and activation of user functions 2.6 Active backlight 2.7 Switching off the display SOS mode COM Setting up Smart COM 4.1 Mounting the high pressure hose to the first stage ___________________________________ 2 ___________________________________ 4 ___________________________________ 4 ___________________________________ 5 ___________________________________ 6 ___________________________________ 8 ___________________________________ 8 ___________________________________ 8 ___________________________________ 8 ___________________________________ 8 ___________________________________ 9 ___________________________________ 9 ___________________________________ 9 __________________________________ 10 __________________________________ 10 __________________________________ 10 __________________________________ 10 __________________________________ 10

ppO2 0,21 bar

ppO2 max

CNS O2% decreases

0,5 bar CNS O2% increases
Nitrox diving may only be attempted by experienced divers after proper training from an internationally recognized agency.
2 Attention messages and alarms
Smart draws the divers attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are always visual and audible under water, only visual at the surface except the decompression alarm. The audible attention messages (but not the alarms) can be switched off selectively with SmartTRAK. 2.2 Alarms Serious injury or death may result from failing to immediately respond to alarms given by Smart. Alarms are given to the diver visually by flashing symbols, letters or figures. In addition, an audible sequence in one frequency can be heard during the whole duration of the alarm. (can not be switched off) An alarm occurs in the following situations (more information can be found on the listed pages): Page 25 Low battery alarm** The service symbol appears if the battery capacity reaches 0%. Take the unit to your authorised SCUBAPRO % UWATEC retailer.
2.1 Attention messages Attention messages are communicated to the diver visually by symbols, letters or flashing figures. In addition, two short audible sequences can be heard (in an interval of 4 seconds) in two different frequencies under water. 4 sec (can be switched off)
Attention messages come up in the following situations (more information can be found on the listed pages): Page Maximum Operating Depth / max. ppO2 is reached Set maximum depth is reached Oxygen toxicity reaches 75% No-stop time = 2 minutes Prohibited altitude* (surface mode) Entering decompression when diving with L0 COM Remaining Bottom Time <3 minutes COM Tank pressure has reached set warning level COM Increased workload Diving with microbubble levels (L1-L5): MB no-stop time = 0 MB level stop ignored MB level reduced Entering decompression when diving DEPTH with MB level L1-L5

4.6 Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD) The maximum partial pressure of oxygen ppO2 max (default 1.4 bar) determines 4 sec the Maximum Operating Depth (MOD). Diving deeper than the MOD will expo% se the diver to oxygen partial pressures higher than the set maximum level.
The ppO2 max can be set by means of SmartTRAK between 1.0 and 1.95 bar. The set value and the information about the current ppO2 are not displayed.
The MOD is a function of ppO2 max and the mixture used. If during the dive the MOD is reached or exceeded Smart sends an audible attention message, the ascent arrow appears and the current depth display starts flashing. Ascend to a shallower depth in order to diminish the danger of oxygen poisoning. The MOD should not be exceeded. Disregarding the warning can lead to oxygen poisoning. ppO2 max should not be set higher than 1.6 bar
4.7 Oxygen toxicity (CNS O2%) % Smart calculates oxygen toxicity from depth values, time and the gas mixture and displays it in the location of the ascent rate. The toxicity is expressed in 1% increments of a maximum tolerated value (O2 clock). The symbol <CNS O2> is % displayed together with the percentage.

Oxygen toxicity 4 sec

An audible attention signal goes off if oxygen toxicity reaches 75%. The symbol <CNS O2> flashes and the ascent arrow appears. Ascend to shallower depth to decrease oxygen loading.
When oxygen toxicity reaches 100%, an audible alarm goes off every 4 seconds. <CNS O2>, the precentage value and the ascent arrow flash. Danger of oxygen toxicity! Start ascent at once.
During an ascent and if the CNS O2% value does not increase anymore (due to a lower partial pressure of oxygen), the audible warning is suppressed. During the ascent, the display of the oxygen toxicity is replaced by the ascent rate. If the ascent is stopped, the display changes back to the indication of the CNS value. 4.8 COM Tank pressure
Tank pressure is indicated in the lower display. The tank pressure is also used for the calculation of the remaining bottom time (RBT) and the workload.
When the tank pressure reaches the set warning pressure (SmartTRAK) an audible alarm goes off and the tank symbol is shown. Default value of the warning pressure: 100 bar (1450 psi). Do not dive any deeper. Start to ascend soon. In case of increased workload, Smart COM displays a lung symbol in the lower display and an audible attention message occurs. In order to prevent additional saturation, reduce exertion, relax and breathe more slowly.

TANK Remaining Bottom Time (RBT) 4.9 COM DATA RBT is the time left at the current depth until the point of time when the ascent must bar be started. The RBT is shown in the lower display. The RBT is calculated on the basis of the current tank pressure, breathing rate, the temperature, and the dive data RBT so far recorded. The RBT is based on the assumption that the tank pressure should amount to the set pressure (default 40 bar/600 psi) at the end of the dive. Alterations can be made with SmartTRAK. A graphic representation of RBT is on page 11.
Never allow the RBT to go below three minutes. If the RBT goes below three minutes there is a danger of insufficient supply of gas mixture for the ascent as well as an increased risk of decompression sickness, and serious injury or death may result! Correct calculation of RBT when using a reserve or J type valve is possible only if the reserve function of the valve is in the open (down) position during the dive.
If the RBT drops below three minutes, an audible attention signal is activated, the ascent arrow is displayed and the tank icon and RBT start flashing. Start ascent immediately.

RBT < 3 minutes

The RBT value should never reach <0:>. With RBT=0 the remaining tank reserve may not be sufficient for the ascent. When the last minute has passed (RBT=0) an audible alarm is activated every 4 seconds. The RBT, the ascent arrow and the tank icon start flashing. The audible alarm on exceeding the RBT is suppressed at depths less than 6.5 m (21 ft) if Smart COM is in the no-stop phase. Start ascent at once

RBT = 0 minutes

4.10 Decompression information No-stop time is displayed if no decompression stops are necessary. The arrow NO STOP decompression stops are necessary. The figures indicate no-stop time in minutes.

is visible if no

No-stop display <99:> means remaining time of 99 minutes or more. No-stop time is calculated on line and influenced by the current workload and current water temperature.

No-stop time 4 sec

If no-stop time drops below 3 minutes, an audible attention signal is activated and the no-stop value begins to flash. If no-stop time is less than 1 minute, the no-stop display shows the flashing value "0". In order to prevent a decompression dive, ascend slowly until the no-stop time is 5 minutes or more. Dives that require decompression stops are not recommended.

Decompression values

Decompression stop depth Decompression time
Ignored decompression alarm
The decompression alarm is activated if the decomDECOSTOP , the decompression stop duration and decompression stop depth begin to flash and an audible alarm goes off. Due to the formation of microbubbles, decompression can increase massively if a decompression stop is ignored. When the surface is reached during the decompression alarm, the arrow DECOSTOP , the decompression stop duration and decompression depth continue flashing, in order to point to the risk of a decompression accident. The SOS mode is activated 3 minutes after the dive if corrective action is not taken (-> 10).

WARNING pression stop is ignored. The arrow
If the total (cumulative) duration of the decompression alarm is longer than one minute, it is entered in the logbook. Descend to the prescribed decompression stop depth immediately!

Total time of ascent

As soon as decompression stops are necessary Smart shows the total time of ascent. This includes the ascent time from the current depth to the surface and all decompression stop obligations. The total time of ascent is calculated on the basis of the prescribed ascent rate and a normal workload. Total time of ascent can be subject to change if the ascent rate is not ideal (100%) or if Smart COM detects a higher workload.
On all dives with Smart, make a safety stop for at least three minutes at a depth of 5 m (15 feet).
On entering the decompression phase, the arrow NO STOP disappears, the arrow DECOSTOP appears and an attention beep goes off. Right beside the arrow, the deepest decompression stage in metres (feet) is displayed. Next to the decompression stop depth, the decompression stop duration of the displayed stage appears in minutes. The display <3m 7:> means that a decompression stop of 7 minutes at a depth of 3m has to be made. When a decompression stop has been finished, the next higher decompression stop is displayed. When all decompression stops have been made, the arrow DECOSTOP extinguishes and the arrow NO STOP reappears. The indication of time on the lower right shows the no-stop time again.
5 Functions at the surface

5.1 End of a dive

After reaching the surface (<0.8 m/3 ft) Smart remains in dive mode for 5 minutes. The delay allows for surfacing for a short period for orientation. After 5 minutes the dive is closed and it is entered into the logbook.

5.2 Desaturation time

For the calculations of the desaturation and no-fly time it is assumed that the diver breathes air while on the surface.
DESAT , desaturation time in hours and After the dive has been closed minutes and, if available, oxygen toxicity is displayed. Desaturation time is determined either by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time. Oxygen toxicity (<CNS O2>) is displayed and adjusted until the value becomes 0%. Desaturation time is indicated until the next dive or until it reaches zero. The display is switched off to save energy three minutes after the last manipulation is made. The calculations are nevertheless continued in the background.
Oxygen toxicity Desaturation time 5.3 No-fly time No-fly time Do not fly icon
The <no-fly time> is indicated beside the icon <do not fly>. <No-fly time> is the time in hours that should pass before a flight and is displayed and adjusted until the value becomes 0 hours.

6.2 Prohibited altitude

Smart shows via flashing altitude segments while at the surface to which altitude the diver may not rise.
Ascent to altitude range 3 and 4 prohibited. Max. allowed altitude: 2650 m (8694 ft).

Max. altitude:

850 m 1650 m 2650 m 4000 m 2790 ft 5413 ft 8694 ft 13120 ft The ascent prohibition can also be displayed together with an altitude range Example: you are at 1200 m (3937 ft) (altitude range 1) and you may ascend to range 2 only (2650 m / 8694 feet). You may not rise to the altitude range 3 or 4.
6.3 Decompression dives in mountain lakes In order to assure optimal decompression even at higher altitudes, the 3m (10 % ft) decompression stage is divided into a 4 m (13 ft) stage and a 2 m (7 ft) stage in altitude ranges 1, 2 and 3. The prescribed decompression stop depths are, in sequence, 2m / 4m / 6m / 9m (7 ft / 13 ft / 20 ft / 30 ft).
Altitude range 4: no deco data COM no RBT
If atmospheric pressure is below 620 mbar (8.99 psi) (altitude higher than 4100 m / 13450 ft above sea level), no decompression data is calculated and displayed (automatic gauge mode). In addition RBT (COM) and the dive planner are not available anymore. The oxygen toxicity and the tank pressure (COM) are still indicated.

UWATEC

Smart dive computers
IV Diving with microbubble levels (MB)
The following chapter deals with the characteristics of diving with microbubble levels (MB levels). For general information about displays and features of diving with Smart see chapter III. Microbubbles are tiny bubbles that can build up inside a diver's body during any dive and normally dissipate naturally during an ascent and on the surface after a dive. Dives within no-stop time and observance of decompression stops do not prevent the formation of microbubbles in the venous blood circulation. Dangerous microbubbles are those migrating into the arterial circulation. The reasons for the migration from the venous blood circulation to the arterial circulation can be a great many microbubbles collecting in the lungs. UWATEC has equipped Smart dive computers with a new technology to protect from microbubbles. The diver chooses according to his/her needs an MB level and influences through it the level of protection from microbubbles. Diving with MB levels requires additional ascent stops (level stops), the ascent is slowed down and the body gets more time to desaturate. This works contrary to the formation of the microbubbles and increases the safety. Smart features 6 microbubble levels (L0-L5). Level L0 corresponds to UWATEC's well-known decompression model ZH-L8 ADT and does not require level stops due to microbubble formation. Levels L1 to L5 offer additional protection from microbubble formation with level L5 offering the highest protection. Similar to the display of information during decompression dives or dives within no-stop time, Smart displays depth and duration of the first level stop as well as the total time of ascent as soon as the MB no-stop time has run out. As the MB no-stop time is shorter than the ordinary no-stop time a diver will be required to carry out a stop (level stop) sooner than a diver using level L0. If a diver ignores a required level stop, Smart will change over to a lower MB level and the dive can not be completed with the initially chosen MB level. For example, if a diver sets level L4 on Smart prior to the dive and during the dive ignores the stops recommended Smart will automatically adjust the setting to level L3 or lower. 1 Comparison of dives with MB level L0 and MB level L5 When two Smarts are used simultaneously, one unit is set for example to MB level L5, the other to L0, the no-stop time will be shortened and level stops will be required before the diver has the obligation of a decompression stop. These additional level stops help dissipate the microbubbles.

V Gauge mode

Gauge mode is provided for those who prefer to utilize their own tables (technical diving) or for those who go freediving in addition to scuba diving.
Dives in gauge mode are performed at your own risk!
When in gauge mode, the Smart will only display time and depth information, however nitrogen tissue loading and oxygen exposure will be calculated just as they would be during a regular SCUBA dive. It is consequently very important that even when using the Smart in gauge mode, the correct value of your oxygen percentage is set -> 14. Because the dive computer has residual nitrogen information after having been utilized in gauge mode, it is ready for use as a regular computer at any time after switching it back to computer mode.
Setting an incorrect mixture carries an inherent risk of decompression sickness and/or oxygen toxicity! An incorrect gas mixture can be lethal! Even before a dive in gauge mode, make sure that the set gas mixture corresponds to the gas mixture currently used. If you are diving trimix or any mix other than oxygen/nitrogen with an oxygen percentage of 21% or higher, input the correct percentage value for the oxygen. The computer will track oxygen exposure correctly and exaggerate the nitrogen loading. If you are diving trimix or any mix with a percentage of oxygen lower than 21%, set the computer to 21% oxygen. The computer will exaggerate both the oxygen exposure and the nitrogen loading.
Enabling the gauge mode (Switching back to the regular dive computer mode) To use the Smart in gauge mode, you must rst enable the computer via SmartTRAK and the infrared interface. Choose "Dive Computer Settings" under the "Options" pop-up window in SmartTRAK. Once the "Dive Computer Settings" dialog box opens, the PC will "write" rst "read" the existing settings in the dive computer. Click on "ON" ("OFF" to switch back to the regular dive computer mode) under "Gauge Mode", then click on the right icon in the top row to "write" the changes to the dive computer. The dive computer will now show "OnG" on the display.

Diving in gauge mode

In gauge mode oxygen toxicity is not displayed, but it is calculated in the background based on the set oxygen mixture. When the calculated value reaches 75% and 100%, an attention beep and an alarm go off, respectively.
The following information is displayed in gauge mode: Icon for microbubble level L1-L5
Temperature Current depth In metres (feet) Maximum depth Maximum depth reached during the dive.
O2% Mix Selected oxygen fraction
Dive time Duration of the dive (min)

Tank pressure

Ascent rate (Only while ascending)

Gauge mode

After diving in gauge mode After a dive in gauge mode the display shows the following information based on the preset O2 mixture:
Microbubble warning (do not dive)* ->20
No fly time ->20 Do not fly icon ->20
Prohibited altitude ->21

Oxygen toxicity ->20

Desaturation time ->20
* The duration of the microbubble warning is visible by entering the dive planner -> 29.
Diving after violating the dive computer If the computer has been violated by not respecting a mandatory decompression stop, for instance, the computer will lock out for 24 hours. Gauge mode will not be available during the entire lock-out time.

VI Dive planner

Basis of the planning:
Smart is equipped with a dive planner which allows the planning of no-stop dives with freely determinable surface intervals. selected fraction of oxygen (O2% Mix) selected microbubble level water temperature of the most recent dive altitude range (if any) status of saturation at the time the dive planner is selected assuming a normal workload of the diver and observance of the prescribed ascent rates. If two or more divers using computers are planning a dive, planning for all divers has to be based on the dive computer showing the shortest no-stop times. Failure to do this may lead to serious injury or death from decompression sickness.
1 Planning a no-stop dive
With the contacts B and or B and you can select the dive planner at the surface.
Microbubble warning (Do not dive) Duration of the warning
The microbubble warning and its duration are displayed if Smart detects an increased risk due to the accumulation of microbubbles.

Enter the dive planner with B and E.
The input window for the time interval is displayed if there was a remaining desaturation (DESAT) before the dive planner has been selected. This surface interval between now and the beginning of the dive can be changed with the contacts B and + or B and in steps of 15 minutes.
Input of the surface interval Icon for microbubble level L1-L5
If a microbubble warning (no dive) and its duration has been displayed, Smart proposes this time rounded up to the next 15 minutes as surface interval. If the proposed interval is shortened, the microbubble warning appears.
With B and E you confirm the displayed interval (if applicable), then Smart starts scrolling the no-stop times. The no-stop times are displayed in 3 metre increments (10 ft) and are displayed for every increment for about 3 seconds. The process starts at 3 metre (10 feet). If a microbubble level has been selected (L1 to 5), Smart shows the microbubble no-stop time instead of the no-stop time.
No-stop time or MB no-stop time
Depths deeper than the MOD for the selected gas (O2 mix) are not displayed. On page 20 you will find further information and safety considerations regarding the microbubble warning.
VI Dive planner 2 Leaving the dive planner
With the contacts B and E (1-2 sec.) you can exit the dive planner. This also occurs after three minutes without operation.

VII Logbook

CNS value at the end of the dive Logbook icon Lowest temperature Diving in SOS mode Altitude range (if any) Maximum depth

MB level reduced*

Increased workload warning*

O2 Mix Dive time

Dive number Duration of surface interval (only with repetitive dives)

RBT warning* COM

Gas consumed during this dive dP = differential Pressure (bar or psi)
Ignored decompression stop * Too fast ascent* *Alarms during the dive
If a dive is started within adaptation time (after a change of altitude), the adaptation time is displayed instead of the surface interval.
2 Operation With the contacts B and + or B and you can select the logbook. With B and E you enter the logbook.

if rep. dive

If there was a remaining desaturation time (DESAT) before selecting the logbook, the time since the last dive (surface interval) is displayed.
With B and E you get the most recent dive displayed (LOG 1).
Each bridging of B and + or B and causes a jump to the next older or more recent dive. Upon continuous bridging of the contacts all dives are displayed successively. With the contacts B and E you can exit the logbook. The logbook closes automatically after 3 minutes without operation.
1 Survey A dive is entered in the logbook if the dive time is longer than 2 minutes. Smart PRO records dive profiles of about 100 hours of diving and Smart COM records the profiles of about 50 hours. This information can be transferred to a PC with the standard infrared interface (IrDA) and the Windows software SmartTRAK. Up to 99 dives can be displayed directly on the dive computer. The following information of the dive is displayed:

Maximum depth ______________________ 15, 31 Microbubbles _________________________ 22-26 Mounting the HP hose to the first stage _____ 10 Mountain lakes, Diving in ____________ 21, 31 Nitrox ______________________________ 12 No-stop time _________________________ 18, 22 O2 fraction _______________________ 11, 12, 14 O2% mix, Set up ______________________ 14 O2 partial pressure _________________ 12, 13, 16 O2 partial pressure, maximum ___________ 12,16 O2 toxicity _______________________ 12, 16, 17 Oxygen, see "O2" PC, transfer to PC (logbook) _______________ 31 ppO2, see O2 partial pressure Premix, setting the gas mixture ____________ 14 RBT _____________________________ 11, 13, 18 SmartTRAK ________________________ 8, 12, 31 SOS mode_______________________________ 10 Surface interval _______________________ 29, 31 System___________________________________ 8 Tank pressure (COM) _______________________ 17 Technical information _____________________ 32 Warnings _______________________________ 13 Workload (COM) __________________________ 17 Workload, Increased (COM) _______________ 17
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5.2005 UWATEC Smart dive computers