remember: Setting a wrong mixture carries an inhered risk of decompression sickness and/or oxygen toxicity! It is essential to check the set mixture before each dive and to compare it to the gas mixture to be used. Always remember: Setting a wrong mixture causes either insufficient decompression calculations or a too low calculation of the oxygen-toxicity! Always check the diving limits considering the oxygen content and standard sports diving procedures (decompression sickness, oxygen toxicity). Do not dive deeper than 40 metres. The danger of nitrogen narcosis has to be taken into consideration for all dives regardless of the gas mixture. The Aladin Pro Ultra gives no warning about this. On all dives with the Aladin Pro Ultra, make a safety stop for at least one to three minutes within the 3 to 5 metre zone. Always make the deepest dive of the day first when repetitive dives are planned, and for each dive make sure that the deepest portion of that dive is done at the beginning of the dive. 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 Aladin Pro Ultra fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures should be initiated immediately. On any given dive, all divers in a buddy group must follow the most conservative dive computer for that particular dive. You should not dive for a period of twenty-four hours before activating the Pro Ultra (or any borrowed or rented dive computer) to use it for diving. You MUST be familiar with all signs and symptoms of decompression sickness before using the Aladin Pro Ultra! 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. Always observe the optical and acoustic alarm signals of the Aladin Pro Ultra. Avoid situations of increased risk which are marked with a warning sign in this operating manual. See also page 11, 54, 55, 83.
Aladin Pro Ultra The Diving System
Dive Computer Aladin Pro Ultra
MemoMouse and logbook software DataTrak (Option)
Screen Guard (Optional: several colours)

desaturate with less risk of decompression sickness. The calculation of microbubbles results in altered ascent instructions. If microbubbles are assumed to be present based on the data used by the
Aladin Pro Ultra, the ascent rate to the surface is reduced to 7 metres/minute. This will help prevent the formation of microbubbles in the arterial circulation and minimizes formation of microbubbles in the venous circulation after the dive.
5.2 Advantages On the first dives following responsible diving procedures, a diver using the Aladin Pro Ultra should never require decompression stops, although a one to three minute safety stop between 3 and 5 metres is recommended for every dive. If, however, unplanned circumstances arise during the dive which increase the risk of decompression, the Aladin Pro Ultra can, if closely followed, reduce the risk of decompression sickness by increasing decompression time. Some of the more common risk situations are as follows: Repetitive dives, especially those deeper than 20 metres and those with short surface intervals. Repetitive diving over the course of several successive days. Diving with increased workloads. Yo-yo diving (repeated descents and ascents to the surface during a given dive).
Flying within 24 hours after diving. Excessive ascent rate. If a diver experiences any of these risk factors while diving, the Aladin Pro Ultra will add required decompression time in order to help minimize the risk of decompression sickness. If signs or symptoms of decompression sickness occur after diving with Aladin Pro Ultra, seek IMMEDIATE treatment at the nearest recompression facility.

6 Safety in Diving

With its new decompression model the Aladin Pro Ultra is an extremely versatile tool which can increase your diving comfort and safety. As with any diving tool, however, ultimate responsibility for diving safety remains with the individual diver. The same responsible diving practices taught by all diving certification agencies are still absolutely necessary in order to safely dive with the Aladin Pro Ultra. Certain mistakes which may be made by a diver, such as ascending at an excessive rate, going too deep, or staying too long at depth, may be overcome if the diver carefully follows the Aladin Pro Ultras corrected ascent instructions. Of course, the Aladin Pro Ultra can do nothing to prevent the occurrence of lung overexpansion injuries or nitrogen narcosis, whose avoidance lies solely with the individual diver. The Aladin Pro Ultra is a highly sophisticated technical instrument which, if used and maintained properly, will have high reliability. Despite this no dive should be made with an Aladin Pro Ultra without a thorough understanding of decompression theory and dive table use, and every diver must have a set of decompression tables with him on every dive. Do not use the Aladin Pro Ultra without a set of accepted nitrox diving tables with you as a back up decompression tool on every dive.

The active backlight is no substitute for a dive torch. When diving at night or at increased depth we recommend the use of a dive torch. Replace the battery if the battery warning appears. See page 38.
2.2 Operating the surface functions
On page 2 of the English manual you will find a reference guide. On page 3 of the German manual you will find an openable operating scheme. 1. Der Aladin Pro Ultra is in a state of rest; no information is displayed. -> sleep-mode or -> surface-sleep-mode
2. Bridging B and E activates the display. -> ready-mode or -> surface-mode

depth dive time depth

DO NOT FLY

O2 % MIX O2 % MIX

DESATURATION

Ready-Modus

Surface-Modus
3. A second bridging of contacts B and E activates the display of the remaining battery capacity for approximately 5 seconds. As soon as the battery capacity is 0%, a battery alarm is sent (see page 38). There is still a small reserve left at bAt 0%.
4a Selecting the logbook function: B and + Cancel: B and or automatically after three minutes
4b Activating the logbook: B and E. Aladin Pro Ultra shows the most recent dive.
4c Leaving the logbook: B and E or automatically after three minutes.
Surface-Modus or after three minutes
5a Selecting the O2% Mix function: B and. Cancel: B and +: or automatically after three minutes.

depth dive time

5b Activating the O2% Mix function: B and E By B and + or B and the percentage of oxygen is set.
5c Leaving the O2% Mix function: B and E or automatically after three minutes (new setting is not accepted).
6b Activating the dive-plan B and E. Aladin Pro Ultra starts by listing no-stop times. If the dive-plan is activated out of the surface-mode, first enter the desired interval by B and + or B and. Confirmation with B and E.

or after 3 minutes.

6c Leaving the dive-plan: B and E for approx. 3 seconds: or automatically after three minutes.
6a Selecting the dive-plan function From ready or surface mode: Twice B and Cancel: Twice B and + or automatically after three minutes without operation.

2.3 Operating modes

Aladin Pro Ultra works in various operating modes: Sleep-mode: Activation: automatically When Aladin Pro Ultra is not used, it is in the sleep-mode. The display does not show any information. The computer is briefly activated once every minute to measure atmospheric pressure. The display remains switched off. If a change in altitude is recognized, Aladin Pro Ultra switches to > surface-mode for 3 minutes and afterwards back to the surface-sleep-mode. The increasing of the pressure from descending, automatically activates the dive-mode. Ready-mode: Activation: By touching contacts B and E from sleep-mode. To check the display, all signs light up for 5 seconds.

max. depth depth

DO NOT FLY DIVEPLAN LOGBOOK

deco info dive time

S L O W

DECOSTOP

ft h m
After activation the Aladin Pro Ultra switches into ready-mode. Once in readymode, the display is switched on and the set percentage of oxygen is shown. In certain circumstances altitude sections are also displayed.
By touching contacts B and E in the ready-mode once more, Aladin Pro Ultra will display the remaining battery capacity in percent. Three minutes after activating the ready-mode, Aladin Pro Ultra will fall back into the -> sleepmode.
Dive-mode: Activation: automatically at depth of about 0.5 m. In dive-mode, all diving functions are monitored, i.e. depth and dive time are displayed, maximum depth is stored, saturation of tissues is calculated, no-stop time or decompression prognosis is determined, ascent rate is controlled and displayed and the correctness of the decompression procedure is supervised. The set percentage of oxygen is displayed at the beginning of a dive until maximum depth is reached, but at least for the first 5 minutes of the dive.

dive time dive time

max. depth max. depth deco info deco info
Wait-mode: Activation: automatically on reaching the surface The wait-mode is activated if the the diver surfaces (diving depth less than 0.5 m). At the surface, the dive is not completed and entered into the logbook for an interval of 5 minutes. This allows the short surfacing for orientation or tank exchange. During the 5 minutes waiting time, the set percentage of oxygen is displayed alternatively with the maximum depth.
Surface-mode: Activation: automatically after a dive or when changing altitude. After a dive has been completed, Aladin Pro Ultra is in surface-mode. All data belonging to the surface interval are calculated and displayed: simulation of microbubble formation, actualization of oxygen toxicity and nitrogen saturation of the tissues depending on the calculated skin temperature and the assumed work load at the surface, calculation of desaturation time, and no fly interval. Desaturation time is determined either by oxygen- or nitrogen saturation, depending on the gas requiring the longer time. Oxygen saturation <CNS O2 %> is displayed and adjusted until the value becomes 0%. In order to save energy, Aladin Pro Ultra falls into the surface-sleep after 3 minutes. The functions of surface-mode are then carried out in the background. The atmospheric pressure is measured in surface-sleep once every minute. If the atmospheric pressure decreases, for example in case of change of altitude, Aladin Pro Ultra switches from sleep-mode or from surface-sleep into surface-mode automatically and displays the adaptation time. The adaptation time is the time after which all body tissues have adapted to the ambient pressure (= desaturation time). Logbook-mode: Activation: manually by contacts Data of 19 past dives can be called up in the logbook-mode. It shows maximum depth, dive time, preceding interval*, altitude sections and, where appropriate, alarms. A dive is entered in the logbook if it has lasted more than 2 minutes. When the dive was a repetitive dive then it also shows the interval which has passed since the last dive or a preceding change of altitude. The last 37 dives and the last 200 minutes of dive-profiles can be downloaded out into a MemoMouse and later from there into a personal computer (Windows). * Preceding interval is only shown when the computer calculated that there was a residual nitrogen uptake at the beginning of the logged dive.

Attention Messages and Alarms

Preparation for the Dive

Functions during the Dive

Functions at the Surface

Diving in Mountain Lakes
_____________________________________ 51, 52
III Uwatec Aladin Pro Ultra

1 Terminology / Symbols

The information on the display of the Aladin Pro Ultra varies depending on the kind of dive and the dive phase. 1.1 Display during no-stop phase No-stop phase: Dive time: CNS O2 LIMIT: Dive phase during which ascent is allowed without decompression stops.
D Time of the dive below depth of 1.2 m. E

Oxygen toxicity

no-stop phase

decompression phase

current depth A

C 24min

26.2 m
maximal depth D dive time

B C no-stop time

1.2 Display during decompression phase Decompression depth: Decompression time:
A (7 min) total ascent time to surface
lowest deco-stop 2 min decompression time

no-stop range

decompression range

35.7 m

Total ascent time to surface: A CNS O2 LIMIT: D
Lowest stage is displayed. Prescribed duration of the decompression stop at the displayed decompression stage. Total ascent time including decompression stops. Oxygen toxicity
1.3 Nitrox information (O2 information) For dives with compressed air in normal recreational diving nitrogen is the decisive gas for the decompression calculations. When diving with nitrox, the toxicity of oxygen rises with the increase of the portion of oxygen and increasing depth and can limit dive time and the maximum depth. Aladin Pro Ultra includes this in the calculations and displays the necessary information: <O2 %MIX> ppO2 max Percentage of oxygen: The percentage of oxygen in the Nitrox mixture can be set between 21% (normal compressed air) and 50%. Maximum allowable partial pressure of oxygen: The higher the percentage of oxygen in the used mixture, the smaller the dive depth at which the tolerable partial pressure of oxygen (ppO2 max) is reached. Default setting is a limit of 1.5 bar, it can be changed with the DataTalk-program in the range of 1.2 to 1.95 bar. The Aladin Pro Ultra does not display the entered ppO2 limit, but warns the diver acoustically and optically if he reaches the depth at which the ppO2 limit is reached. The CNS O2%-value/alarm is not influenced by the selected ppO2max.-setting. Oxygen toxicity: With the increased percentage of oxygen, the oxygen in the tissues, especially in the central nervous system (CNS) becomes important. If the partial pressure of oxygen rises above ppO2/depth 0.5 bar, the CNS O2 value increases, if 0,21 bar the partial pressure of oxygen is below 0.5 bar, the CNS O2 value decreases. CNS O2% The closer the CNS O2 value comes to decreases 100%, the nearer comes the limit, 0,5 bar where symptoms can occur. See page CNS O2% 36, 37 and 45. increases Nitrox diving may only be attempted by experienced divers with special training.

3.2 Setting the gas mixture Before every dive, you must check if the setting of the gas mixture (percentage of oxygen) on your Aladin Pro Ultra corresponds to the mixture in your tank. Reset the mixture if necessary: 1.Switch on computer manually and check the set percentage of oxygen (O2 %MIX).
2.Switch to O2 %MIX input stage by bridging B and.
3.Confirm by bridging B and E, the O2 -value starts flashing.
4.Bridging B and + will increase the percentage of oxygen (from 21% to 50%), bridging B and decreases the percentage of oxygen. 5.Confirm with B and E. Aladin Pro Ultra switches back into ready-mode.
Before every dive, make sure that the setting of the gas mixture corresponds to the actual mixture used. A wrong setting causes the Aladin Pro Ultra to miscalculations for this particular dive. If the percentage of oxygen is set too low this can lead to oxygen intoxication without warning. If the value is set too high decompression damages due to nitrogen saturation may occur without a warning from the Aladin Pro Ultra.
4 Functions during the Dive

4.1 Dive time

The whole time spent below a depth of 1.2 metres is displayed as dive time in minutes. While the dive time is running, the colon on the right of the figures is flashing in one second intervals. Maximum dive time displayed is 199 minutes.
If a dive lasts longer than 199 minutes the dive time display starts again at 0 minutes.

4.2 Current depth

Current depth is given in 10 cm-increments. On switching on and at a diving depth of less than 0.5 metres the void display <---> appears. Depth measurement is based on freshwater. Therefore, Aladin Pro Ultra shows a slightly greater depth than actually true when diving in salt water, depending on the salinity of the water.
deco info max. depth deco info

4.3 Maximum depth

The maximum depth is displayed if it is lower than the current depth. To prevent the display changing very frequently when diving in the vicinity of the maximum depth, it is only displayed if it exceeds the current depth by more than 1 metre.
The percentage of oxygen is displayed instead of the maximum depth until a first maximum depth is reached (but at least for the first 5 minutes of the dive).

4.4 Ascent rate

Optimal ascent rate varies depending on depth between 7 and 20 m/min. It is displayed in percent of the reference variable. If the ascent rate is greater than 100% of the set value, the black arrow <SLOW> appears. If the ascent rate exceeds 140%, the arrow starts flashing. The Aladin Pro Ultra provides an acoustic alarm if the ascent rate is 110% or greater of the set value. The intensity of the alarm increases in direct proportion to the degree that the prescribed ascent rate is exceeded.See page 56.

The prescribed ascent rate must be observed at all times! Exceeding the prescribed ascent rate can lead to microbubbles in the arterial circulation which can lead to serious injury or death due to decompression sickness.
The Aladin Pro Ultra may require a decompression stop even within the nostop phase because of the danger of formation of microbubbles due to an improper ascent. The decompression time necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded. From great depth, too slow an ascent may cause heightened saturation of tissues and an extension of both decompression time and total ascent time. At shallow depth, a slow ascent may shorten the decompression time because the tissues are desaturating during the slow ascent. The display of the ascent rate has priority over the CNS O2%-value display.
Messages: Ascent rate Optical alarm

Acoustic alarm

Excessive ascent rates for longer periods are entered in the logbook.

Response:

Reduce ascent rate
4.5 Partial pressure of oxygen (ppO2) The tolerable partial pressure of oxygen can be set by means of a MemoMouse 4 sec and the DataTalk software to between 1.2 and 1.95 bar (see page 76). The set depth dive time value and the information about the actual ppO2 are not displayed.

Messages:

Depending on the mixture used and the setting of the maximum ppO2 the limit for an attention message is reached at different depths. When the set maximum partial pressure is reached Aladin Pro Ultra sends an acoustic attention message and the current depth display starts flashing. Ascend to a shallower depth in order to diminish the danger of oxygen toxicity.
The allowed maximum depth should not be exceeded or only for a short period. Disregarding the warning can lead to danger from oxygen toxicity.
4.6 Oxygen toxicity (CNS O2%) Oxygen toxicity is calculated on line as a function of depth values and the gas depth dive time mixture. The toxicity is displayed in 5% increments as a percentage of the maximum value tolerated (O2 clock), together with the symbol <CNS O2 LIMIT>. This display is in the same place as the ascent rate display. %
An acoustic signal is sent if oxygen toxicity reaches 75%. The symbol <CNS O2 LIMIT> and the percentage value flashes continuously. As the value must no longer increase, go to a shallower depth if necessary.

CNS O22LIMIT CNS O LIMIT

When oxygen toxicity reaches 100%, an acoustic alarm is sent every 4 seconds. <CNS O2 LIMIT> and the percentage value flashes continuously. See also page 58. Start ascent at once.

For the calculations of the desaturation and No Fly Time it is assumed that the diver inhales air.

5.3 No fly time

The waiting period until the next flight is indicated as follows: DO NOT FLY Beside this the time in hours that should pass before a flight is displayed.
In some cases the no fly time is considerably longer than with previous models (because of recalibrated desaturation time).
Flying while the Aladin Pro Ultra displays injury or death from decompression sickness.

may lead to serious

For the calculations of the desaturation and No Fly Time it is assumed that the diver inhales air.
If desaturation time reaches zero, the tissue models of the Aladin Pro Ultra are desaturated and it switches into the sleep-mode. Desaturation time is determined either by oxygen or nitrogen saturation, depending on which gas requires the longer desaturation time. Oxygen saturation (<CNS O2 LIMIT>) is displayed and adjusted until the value becomes 0%.
5.4 Warning of bubbles Through repetitive dives microbubbles accumulate in the lungs if the surface interval is not long enough. Ignoring decompression stops or an excessive depth dive time ascent rate can also lead to bubbles in tissues. In order to reduce the risk of h decompression sickness for future repetitive dives, the surface interval should be planned long enough to reduce the risk of decompression sickness. If % O % MIX Aladin Pro Ultra calculates that the formation of microbubbles occur during h the surface interval, it will advise a diver to extend the surface interval. If the max. depth deco info display <Atn> (=attention) is visible instead of the depth during the surface interval (surface-mode), the diver should not undertake another dive. Through the extension of the interval the diver may prevent a high concentration of bubbles in the lungs during the planned dive and avoid a higher risk situation. See also page 70.
If the dive has to be made during <Atn>-time, the <Atn> time of the following dive can increase considerably. If the dive is made in spite of the display <Atn>, the diver must cope with a clearly shorter no-stop time and an extension of decompression.
6 Diving in Mountain Lakes
Aladin Pro Ultra measures the atmospheric pressure even while in sleep-mode. If the computer detects a higher altitude, it switches into surface-mode automatically. Desaturation time indicated at this moment refers to adaptation time at this altitude. If diving starts within this adaptation time, Aladin Pro Ultra treats it as a repetitive dive, since the body still has a higher saturation. The entire altitude range is divided into four sections which are influenced by barometric pressure. That is why the defined altitude sections overlap on their fringes. The altitude section is indicated at the surface, in the logbook and in the dive planner by stylised mountains, if a mountain lake altitude is reached. Sea level to an altitude of approximately 1000 metres is not indicated. In the following, you can see the approximate altitude ranges of the four sections:

4000 m 3000 m

switching at approx. 610 mbar switching at approx. 725 mbar switching at approx. 815 mbar switching at approx. 905 mbar

2000 m

1000 m
In order to assure optimal decompression even at higher altitudes, the 3 m decompression stage is divided into a 4 m stage and a 2 m stage (the pescribed decompression depths are, in sequence, 2 m, 4 m, 6 m, 9 m). Aladin Pro Ultra can be used as a decompression computer in case of an depth dive time emergency up to an altitude of 4000 m. If atmospheric pressure is below 620 mbar (altitude higher than 4000 m above sea level), no decompression information is displayed. Dive-plan-mode can no longer be started, since no decompression information is available. Beside the display of the altitude section 3, <HI> (=high) appears, telling the diver that he will not get any decompression max. depth deco info information for the dive. Oxygen-toxicity is still calculated. Very small differences in the pressure sensors can cause an indication of different altitude sections of two dive computers at the same altitude on the fringes of the altitude ranges. These differences are not meaningful and do not interfere with the functions of Aladin Pro Ultra. But if an altitude section is displayed at sea level or the altitude readouts of two computers differ by more than one altitude section (e.g. section 2 instead of 0), there may be a computer defect. In this case, send your computer back to your retailer for testing.
Diving while at altitude can considerably increase the risk of decompression sickness. Do not undertake high altitude diving without being specifically trained in the special techniques of such diving.
IV Diving at Reduced Risk with Aladin Pro Ultra
1 Diving at Reduced Risk with Aladin Pro Ultra 1.1 1.2 1.3 1.4
Diving at reduced risk ______________________ 54 Diving at reduced risk for the first dive ________54 Minimizing risk on repetitive dives ___________ 55 Response in increased risk situations ______ 5658
IV Uwatec Aladin Pro Ultra
1 Diving at Reduced Risk with Aladin Pro Ultra
1.1 Diving at reduced risk Aladin Pro Ultra recognizes and reacts intelligently to certain risk situations, although of course it is much better that each individual diver avoid these higher risk situations altogether. If a decompression accident does occur, the optional MemoMouse and DataTrak software allows the analysis of the dive profile and certain risk parameters to provide for more complete information for treatment purposes. Analysis of the most recent results of decompression research and statistical analysis of diving accidents involving decompression sickness supports the following guidelines for diving with a reduced risk of decompression sickness. The following suggestions are highly recommended: 1.2 Diving at reduced risk for the first dive Neither the Aladin Pro Ultra nor any other diving computer or decompression table can guarantee that decompression sickness will not occur even if the computer or table is used correctly and all of the following precautions are followed. Always make your first dive the deepest dive of the day. Always make the deepest descent of each given dive on a particular day at the beginning of that dive. Avoid repeated ascents and descents (yo-yo diving). Avoid repeated heavy workload whilst at depth. Plan the dives 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. On all dives with the Aladin Pro Ultra, make a safety stop for at least one to three minutes within the 3 to 5 metre zone. Check <O2% MIX> (gas mixture) and the dive depth limit given by the maximum ppO2 selected. Observe <CNS O2 %> (ascend at 75%). Comply with the ascent rate and carry out any decompression stop required. If the Aladin Pro Ultra fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures should be initiated immediately.

The diver ascends too rapidly: The model calculates the formation of bubbles due to the excessively rapid ascent. The no-stop time is shortened or a longer (and eventually at greater depth) decompression prescription is displayed in order to assure increased decompression. See pages 37, 42 and 43.
Recommended response of the diver: During the dive: Observe the new decompression prescription shown by Aladin Pro Ultra. After the dive: Watch for symptoms of arterial gas embolism and decompression sickness. Seek immediate medical attention at a recompression chamber should any signs or symptoms of decompression sickness appear. Before the next dive, plan a sufficiently long interval (display <Atn> should have disappeared). An exessive ascent rate can lead to serious injury or death from decompression sickness. Failure to seek IMMEDIATE treatment for any signs or symptoms of decompression sickness after a dive may result in serious injury or death.
Situation 2: Reaction of computer: The diver disregards the prescribed decompression depth.
The model calculates the formation of bubbles due to ignoring decompression. A longer (and eventually at greater depth) decompression is displayed in order to assure sufficient time for desaturation. See page 37, 47. Recommended response of the diver: During the dive: Descend to the prescribed decompression depth at once. Do not descend to greater depths during the dive. Observe the decompression prescribed by Aladin Pro Ultra. After the dive: Watch out for symptoms of arterial gas embolism and decompression sickness. Before the next dive, plan a sufficiently long interval (display <Atn> should have disappeared). Failure to comply with all decompression information on the Aladin Pro Ultra may result in serious injury or death due to decompression sickness. There is a risk of decompression sickness on every dive even if all precautions described in this manual are taken.

Situation 3:

Reaction of computer:
It is very unlikely to have a surface interval long enough to clear the <Atn> prior to the next dive during an organized dive trip from a boat. This previous buildup of nitrogen must be taken into consideration for the next dive. Aladin Pro Ultra calculates a shorter no-stop time or decompression prescription to reduce the risk of decompression sickness. See page 36 and 50.

Recommended response of the diver: During the dive: Dive conservatively on all repetitive dives. Limit your maximum depth to no more than 25 metres at the very beginning of the dive, and make a very slow ascent. After the dive: Before the next dive, plan a sufficiently long surface interval (<Atn> display should disappear).
Situation 4: Reaction of computer: <CNS O2%-value> reaches 100%. An acoustic and visual alarm is given. See also page 37, 45.
Recommended response of the diver: During the dive: Ascend immediately until ppO2 is less then 0.5 bar and the buzzer stops.
Situation 5: Reaction of computer:
ppO2 reaches the set value. An acoustic warning is given, depth indication is flashing (attention message). See page 36, 44.
Recommended response of the diver: During the dive: Ascend above critical depth limit. Observe <CNS O2%-value> carefully.

V Logbook

5 Survey Selection and Activation Selection of Dive Leaving the Logbook-Mode Output on PC
_________________________________________60 _________________________________________61 _________________________________________62 _________________________________________63 _________________________________________64
V Uwatec Aladin Pro Ultra

1 Survey

The Aladin Pro Ultra records the last 37 dives and the dive profiles of the last 200 minutes of diving (see Output on PC page 64). The last 19 dives can be displayed directly on the dive computer. A dive is only entered in the logbook if the dive time is longer than 2 minutes. Displayed information of the dive:

alarms during the dive

altitude sections if any

dive number

maximum depth
duration of surface interval (only with repetitive dives)
If a dive is started within adaptation time (after a change of altitude), the adaptation time is displayed instead of the surface interval.
2 Selection and Activation
1.The logbook is selected by bridging contacts B and + in ready- or surface-mode. Indication LOGBOOK appears. If Aladin Pro Ultra has been in surfacemode before, the surface interval appears as well. You go back into ready- or surface-mode by B and.
2.In order to activate the logbook, bridge contacts B and E. The most recent dive is displayed.

3 Selection of Dive

1.Bridge contacts B and + to get the information of the dive preceding the most recent one. Display <DIVE 2> appears.
2.On additional bridging of B and + the logbook jumps to the next older dive (DIVE 3).
3.On constant bridging of the contacts all dives are displayed successively.
4.Bridging contacts B and allows switching back from older dives to more recent ones.
4 Leaving the Logbook-Mode
Touch contacts B and E. Aladin Pro Ultra switches back into ready- or surface-mode. This also happens 3 minutes after activating logbook-mode.

or after 3 minutes

5 Output on PC
The Aladin Pro Ultra stores data of the last 37 dives including a total of approximately 200 minutes of dive profiles from the last dives. This information can be downloaded into a Memo Mouse (optional), which stores up to approximately 66 dive hours. With the DataTark Windows software (optional) the information can then be transferred from the MemoMouse to a PC. Time and date of the dive are entered automatically, based on the clock of the PC-system when the data are transferred via interface. The possibilities and the procedure of this data transfer are described in a separate manual.

VI Dive Planner

Survey Selection and Activation from Ready-Mode Selection and Activation from Surface-Mode Planning a No-Stop Dive Planning a Decompression Dive Planning a Nitrox-dive
________________________________________ 66 ________________________________________ 67 ________________________________________ 68 ________________________________________ 96 ________________________________________ 71 6.1 Calculation of maximum depth ________________ 72 6.2 Calculation of mixture for a given depth ________ 73 ________________________________________ 74
Leaving the Diveplan-Mode
VI Uwatec Aladin Pro Ultra
The Aladin Pro Ultra is equipped with a dive planner which allows the planning of no-stop dives with freely determinable surface intervals for the portion of oxygen set at the moment. The water temperature of the most recent dive and eventual altitude sections are incorporated in the calculation.

Planning of Nitroxdives

Presetting the surface interval (only during desaturation)

Planning dives

no-stop
Planning of decompression dives
If you do not alter the setting of the gas mixture (portion of oxygen) the planning will be based on the already set mixture.
Planned decompression dives are not to be attempted by recreational scuba divers. Only divers with extensive experience, training and the appropriate equipment for decompression diving should attempt to plan a decompression dive!
2 Selection and Activation from Ready-Mode
1.From ready-mode, you switch into the diveplan input stage by twice bridging contacts B and.

2.The display shows DIVEPLAN. You return to ready-mode by B and + twice.

max. depth deco info

3.Contacts B and E afterwards activate the planning mode.

DO NOT FLY DIVEPLAN

4.The display shows no-stop times for increasing depths (scrolling no-stop times, see page 69, planning of a no-stop dive).
3 Selection and Activation from Surface-Mode
1.From surface-mode, you switch into the diveplan input stage by twice bridging B and. 2.The display shows DIVEPLAN. You return to surface mode by B and +.
max. depth max. depth deco info
3.After confirming by B and E, the display shows <Add>, <Int> and the interval (flashing). Aladin Pro Ultra expects your input for the duration of the dive interval.
4 Planning a No-Stop Dive
Aladin Pro Ultra expects your input for the duration of the dive interval.
4b You can extend the interval with contacts B and +. B and shorten the interval. 5. You confirm the new surface interval and get into no-stop planning
After confirming the surface interval (if possible), no-stop times are displayed in 3 metre-increments. The process starts with 9 metres. The nostop time for every 3 metre-increment is displayed for about 3 seconds (scrolling no-stop times).
No-stop times are displayed to the depth at which the partial pressure of oxygen (ppO2) has not yet reached the set maximum value.
4a If no surface interval is to be entered, (diving at the present moment), confirm this with contacts B and E, and you switch into no-stop planning.
The Aladin Pro Ultra calculates according to the planned surface interval the expected production of microbubbles. The diver should increase the surface interval if <Atn> (Attention) is displayed. This will reduce the risk of micro bubble production in the pulmonary system.
By repeatedly recalling of the diveplan with varying surface intervals the minimum interval can be determined. Diving with the display <Atn>, a clear shortening of the no-stop time and/or an extension of decompression has to be expected. If a dive is made during <Atn>-time, the <Atn>-time following the dive can increase considerably.

Gross disregard of the ascent rate, exceeding the decompression depth and repeated ascents to the surface (yoyo dives), can all cause microbubbles to form on the arterial side and in tissues. Where the bubbles partially impair circulation, the rate of gas diffusion and the saturation tolerance are changed. Decompression time, and if necessary decompression depth, are adjusted so that existing bubbles stop growing. In addition, altered decompression assures that the tissue desaturates sufficiently if microbubbles impair circulation locally. The calculation of the gas bubbles results in a new ascent instruction. The ascent rate near the surface is reduced down to 7m/min. This prevents with high reliability the formation of microbubbles in the arterial circulation and minimizes the formation of microbubbles in the venous circulation after the dive. 3.2 Advantages On first dives with correct diving technique and avoiding risk situations, there are no extended decompression times. On the other hand, it is possible to react correctly in risk situations due to the realistic simulation of the physiological processes in the body. This increases safety considerably. Risk situations are, for example: Repetitive dives (especially with short intervals) and dives on several successive days Dives in cold water Yoyo dives Flying after the dive
In case of mistakes on the part of the diver, actual prevention of decompression sickness is possible for the first time due to the reconstruction of the bubble formation and its consequences. The correction of the decompression must not be confused with a real recompression, which serves as therapy of already existing damage.

4 Safety in Diving

With its new decompression model Aladin Pro offers a so far unreached level of safety. However, responsibility for the dive finally remains with the diver as before. The usual diving caution is still absolutely necessary when diving with Aladin Pro. In case of diver mistakes (ignoring decompression stops, excessive ascent rate etc.) Aladin Pro can calculate a corrected ascent instruction immediately which minimizes the occurrence of decompression sickness. The prevention of barotrauma and nitrogen narcosis still lies in the hands of the diver. Aladin Pro is a highly developed technical instrument of high reliability. Despite this, the user of the Aladin Pro is to have an understanding of the physiological interrelations, to know the use of decompression tables and to have them with him on every dive. Should an incident occur, the detailed previous history of the incident is stored in the dive computer. The evaluation of these records allows better diagnosis and the most effective treatment for the diver.

II ALADIN PRO SURVEY

1 The Aladin System 2 Operation _____________________________________ 10 2.1 Operating scheme for surface functions ____ 13 2.2 Operating modes ______________________ 18

II Aladin Pro Survey

1 The Aladin System
The potential of the Aladin Pro computer is expanded by the addition of accessory items.
1 During the dive the Aladin Pro dive computer supplies only the important dive and decompression, plus warnings if necessary. It has a logbook with the last 19 dives and a dive planner.
2 The configuration software DataTalk (supplied together with DataTrak) allows the alteration of a number of preset parameters of Aladin Pro.

dept h dive

max. de pth
3 The external memory extension (ESE) makes it possible to read data from the logbook memory of Aladin Pro without a personal computer. This is especially valuable on diving holidays. 4 The logbook software DataTrak enables you to print out logbook pages. You can get a special logbook with insert folders from your retailer.

2 Operation

Switching on display: automatically, on submerging in water or when adaptation to atmospheric pressure is necessary. manually by operating contacts on housing. automatically, after three minutes without operation.

Switching off display:

Aladin Pro has 4 operating contacts B, E, +, on the outside of the housing. For manual operation touch base contact B and any one of the other three contacts above the display with moistened fingers.

dep th div e ti me

Contact B:
Base contact, which has to be touched for all operations Enter contact. It serves to switch on the computer, to activate the logbook and dive-plan-mode and to switch between no-stop and decompression planning. It is also used to confirm inputs and is therefore comparable to the ENTER- or RETURN-key of a computer. They serve to select the logbook and dive-plan as well as to set values (time, depth, dive-number etc.).

ma x. d epth

Contact E:

E + / contacts:

2.1 Operating scheme for surface functions

dep th dive time

max. dep th

dec o info

Sleep Surface Sleep

B and E

Input stage

DIVEPLAN

(or 3 min)

Ready or Surface

automatically

LOGBOOK

B and +

Batterycapazity

th dive

B and

depth dive time
1. Aladin Pro is in a state of rest; no information is displayed (-> sleep-mode or -> surface-sleepmode).

dept h dive time

max. dept h

depth dive time depth

DO NOT FLY
2. Bridging B and E activates the computer -> readymode or -> surface-mode.

DESATURATION

Ready-mode

Surface-mode

3. A second bridging of contacts B and E activates the display of the remaining battery capacity for approximately 5 seconds. As soon as the battery capacity is 0%, a battery alarm is sent (see page 29). There is still a small reserve left at bAt 0%.
4.a) Selecting the logbook function: B and + Cancel: B and or automatically after three minutes without operation
4.b) Activating the logbook: B and E. Aladin Pro shows the most recent dive.

dep th dive

o info
4.c) Leaving the logbook: B and E or automatically after three minutes without operation.

. dep th

Surface-mode or after 3 minutes
5.a) Selecting the dive-plan function: B and. Cancel: B and +; or automatically after three minutes without operation
5.b) Activating the dive-plan B and E. Aladin Pro starts by listing no-stop times. If the dive-plan is activated out of the surface-mode, enter the desired interval by B and + or B and. Confirmation with B and E.

3s or after 3 Minutes

5.c) Leaving the dive-plan: B and E for approx. 3 seconds or automatically after three minutes.

2.2 Operating modes

Aladin Pro works in various operating modes: Sleep-mode: Activation: automatically When Aladin Pro is not used it is in the so called sleep-mode. In this case, the electronics are sleeping for the most part, the display does not show any information. The computer is briefly activated once every minute to measure atmospheric pressure. The display remains switched off. If a change in altitude is recognized, Aladin Pro switches to -> surface-mode for 3 minutes. Ready-mode: Activation: By touching contacts B and E from sleep-mode. To check the display, all signs light up for 5 seconds.

DO NOT FLY DIVEPLAN LOGBOOK

S L O W

DECOSTOP

ft h m

Aladin Pro switches into ready-mode afterwards. In ready-mode, the display is switched on and in certain circumstances altitude sections are also displayed. On touching contacts B and E in ready-mode once more, Aladin Pro displays the remaining battery capacity in percent. Three minutes after activating ready-mode, Aladin Pro falls back into -> sleep-mode.
Dive-mode: Activation: automatically, when depth more than 0.5 m. In dive-mode all diving functions are monitored: i.e. depth and dive time are displayed, maximum depth is stored, saturation of tissues is calculated with allowance for temperature, no-stop time or decompression prognosis is determined, ascent rate is controlled and displayed and the correctness of the decompression procedure is supervised.
Wait-mode: Activation: automatically on reaching the surface. The wait-mode is activated when the surface is reached after a dive. At the surface, the dive is not closed and entered into the logbook for an interval of 5 minutes. This allows a short surfacing for the purpose of orientation.
Surface-mode: Activation: automatically after a dive or when changing altitude. After a dive has been closed, Aladin Pro is in surface-mode. All data belonging to the surface interval are calculated: Calculations are made on microbubble formation, on state of saturation of tissues after allowing for skin temperature and the assumed diver performance on the surface, on desaturation time and on no fly interval time. In order to save energy, Aladin Pro falls into the so called surface-sleep after 3 minutes. The functions of surface-mode are then carried out in the background. The atmospheric pressure is measured in surface-sleep once every minute. If the
atmospheric pressure decreases, for example because of change of altitude, Aladin Pro automatically switches from sleep-mode or from surface-sleep into surfacemode and displays the adaptation time. The adaptation time is the time after which all body tissues have adapted to the ambient pressure (= desaturation time).
Logbook-mode: Activation: manually by contacts Data of 19 past dives can be called up in the logbook mode. It shows, for example, maximum depth, dive time, preceding interval, altitude sections and, where appropriate, alarms. A dive is entered in the logbook if it has lasted more than 2 minutes. It also shows the interval which has passed since the last dive or a preceding change of altitude. By means of an interface Aladin Pro can be connected with an MS DOS personal computer. In that case, the last 37 dives and the last dive-profiles can be read out. The number of profiles depends on the length of the dives (a maximum total of 200 diving minutes).

Messages: Ascent rate Optical alarm

Acoustic alarm

Excessive ascent rates of longer periods are entered in the logbook. Action: Reduce ascent rate
4.5 Decompression information No-stop time is displayed, if no decompression stops are necessary yet. The arrow (no stop) is visible. The figures indicate no-stop time in minutes.
No-stop display <99:> means remaining time of 99 minutes or more. No-stop time is calculated assuming normal workload and current water temperature.

Messages:

There is an acoustic alarm, if no-stop time is less than 1 minute. In this last minute, the no-stop display shows the flashing value <0>.

Action:

In order to prevent a decompression dive, you have to ascend a few metres after this message.

Decompression values

On entering the decompression phase, the arrow NO STOP extinguishes. The arrow DECOSTOP appears. Right beside the arrow, the lowest decompression stage in metres is displayed. Beside the decompression depth, the decompression time of the displayed stage in minutes appears. The display <9m 3:> means that a decompression stop of 3 minutes at a depth of 9 m has to be made. When a decompression stop has been finished, the next higher 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.
The decompression alarm is activated if the decompression stop is ignored. Arrow DECOSTOP flashes and an acoustic alarm is initiated. Due to the formation of microbubbles decompression can increase massively while a decompression stop is ignored. If the surface is reached during the decompression alarm, the arrow DECOSTOP continues flashing, in order to point to the risk of a decompression accident. The SOS-mode is activated 3 minutes after the dive. If the total (cumulative) duration of the decompression alarm is longer than a minute it is entered in the logbook. Action: Descend to the prescribed decompression depth at once!

Total time of ascent

As soon as decompression stops are necessary, Aladin Pro shows the total time of ascent. The time of ascent to the first decompression stage and all decompression stops are included. The time of ascent is calculated on the basis of the prescribed ascent rate. Total time of ascent can be subject to change, if the ascent rate is not ideal (100%).

5.1 End of a dive

After reaching the surface, Aladin Pro switches into wait-mode automatically for five minutes. This is the time span necessary to recognize the end of the dive. The delay allows for coming to the surface for orientation and the resumption of the dive afterwards. When the dive is closed after 5 minutes in wait-mode, it is entered into the logbook and Aladin Pro switches into surface-mode. In surface-mode, Aladin Pro shows desaturation time and no fly time.

5.2 Desaturation time

Aladin Pro is in surface-mode. The arrow DESATURATION appears; beside, desaturation time in hours and minutes is displayed. Desaturation time is continually indicated until the next dive or until it reaches zero. The display is switched off to save energy 3 minutes after the last manipulation (surface-sleep-mode). Desaturation calculations continue to the made in the background.
In some cases, desaturation times of the new Aladin Pro are considerably longer than those of its predecessors, because the calculation model assumes reduced physical activity at the surface and calculates with shorter half-time periods. If desaturation time reaches the value 0, all tissues are desaturated. Aladin Pro switches into sleep-mode.

5.3 No fly time

The waiting period until the next flight is indicated as follows: time in hours.

; beside,

In some cases the no fly time is considerably longer than with previous models (reason: see desaturation time).
The no fly time must be strictly observed because of the danger of the formation of gas bubbles.

5.4 Warning of bubbles

Through repetitive dives microbubbles accumulate in the lungs if the surface interval is not long enough. Ignoring decompression or an excessive ascent rate can also lead to bubbles in tissues. In certain circumstances, in order to reduce the risk through further repetitive dives, an extended surface interval should be planned. The prognosis on the formation of bubbles during the surface interval allows Aladin Pro to advise the diver to extend the surface interval. If the display <Atn> (=attention) is visible instead of the depth during the surface interval (surfacemode), the diver should extend the surface interval. The extension of the interval prevents a high concentration of bubbles in the lungs during the planned dive and avoids a risk situation.
If the dive has to be made during <Atn> time, the <Atn> time of the following dive can increase considerably. If the dive is made in spite of the display <Atn>, the diver must cope with a clearly shorter no-stop time and an extension of decompression.
Aladin Pro also measures the atmospheric pressure in sleep-mode. If the computer detects a higher altitude section, it switches into surface-mode automatically. Desaturation time indicated at this moment refers to adaptation time at this altitude. If diving starts within this adaptation time, Aladin Pro treats it as a repetitive dive, since the body still has a higher saturation.

1.2 Minimizing risk on first dives The risk can be diminished on first dives by avoiding risk situations and by the selection of a dive profile 'low in bubbles'. This leads to the following recommendations: strictly observe ascent rate and decompression stops avoid repeated ascents to shallower depths (yoyo-dives) avoid exertion at depth plan shorter duration for dives in cold water after completion of the decompression or at the end of no-stop dives, ascend the last metres to the surface very slowly.
1.3 Minimizing risks on repetitive dives There is still excess nitrogen in the body due to the history of the preceding dive. Depending on the duration of the surface interval, there may even be gaseous nitrogen (microbubbles). You can minimize the risk by observing certain rules: observe the same rules for repetitive dives as on your first dive plan repetitive dives at a smaller depth than the first dive plan a sufficient duration of the surface interval (min. 3-4 hours) only go on repetitive dives, if no indication <Atn> is visible on the display plan a day without diving once a week avoid exertion at depth and during the ascent make sure you always have enough air for the ascent
1.4 Action in risk situations If the dive includes a risk situation, Aladin Pro reacts automatically and appropriately to the situation. A change of decompression is indicated if it is actually necessary to minimize the risk. The diver can further reduce the risk through sensible conduct on the next dive and at the same time prevent long decompression stops. A few examples are given on the following pages:
Situation: Reaction of computer: The diver ascends much too rapidly: The model calculates the formation of bubbles due to the excessively rapid ascent. No-stop time is shortened or a longer (and eventually at greater depth) decompression prescription is displayed in order to assure sufficient decompression.
Recommended action of the diver During the dive: After the dive: Observe the new decompression instruction of Aladin Pro. Watch out for symptoms of an arterial gas embolism and decompression sickness. Before the next dive, plan a sufficiently long interval (display <Atn> should have disappeared).
Situation: Reaction of computer: The diver disregards the prescribed decompression depth for some time. The model calculates the formation of bubbles due to ignoring decompression. A longer (and eventually at lower depth) decompression is displayed in order to assure sufficient time for desaturation.
Recommended action of the diver During the dive: Descend to the prescribed decompression depth at once. Do not descend to greater depths any more. Observe the decompression instruction of Aladin Pro. Watch out for symptoms of arterial gas embolism and decompression sickness. Before the next dive, plan a sufficiently long interval (display <Atn> should have disappeared).

After the dive:

Situation: Reaction of computer: The diver is exposed to exertion for a long period (e.g. in a current). An extension of the decompression is indicated, if the muscle tissues are relevant for the decompression of the dive.
Recommended action of the diver During the dive: Avoid further physical exertion if possible. Make a break for relaxation. Extend decompression time at the highest stop if possible. After the dive: Refrain from intense physical exertion on your next dive. Make sure that the surface interval is long enough. It may be advisable not to go on another dive on the same day.
Situation: It is impossible to have a sufficient surface interval so that the indication <Atn> would extinguish prior to the next dive (e.g. on organized diving trips from a boat). Aladin Pro calculates a more conservative no-stop time or decompression prescription in order to allow nitrogen in the vicinity of bubbles enough time for desaturation.

Reaction of computer:

Recommended action of the diver During the dive: Be careful to have a profile 'low in bubbles' on your next dive (limit depth to 25 m max., slow ascent). Before the next dive, plan a sufficiently long interval (display <Atn> should have disappeared).

V LOGBOOK

1 Survey 2 Selection and Activation 3 Selection of Dive 4 Leaving Logbook-Mode 5 Output on PC _____________________________________ 54 _____________________________________ 55 _____________________________________ 56 _____________________________________ 57 _____________________________________ 58

V Logbook

1 Survey
Aladin Pro features a logbook with the last 19 dives. A dive is only entered in the logbook if dive time is longer than 2 minutes. Displayed information of the dive:

alarms during the dive

dive time
altitude sections if any maximum depth
dive number duration of surface interval (only with repetitive dives)
If a dive is started within adaptation time (after a change of altitude), the adaptation time is displayed instead of the surface interval.
2 Selection and Activation
1. The logbook is selected by bridging contacts B and + in ready-mode or surface-mode. Indication LOGBOOK appears. If Aladin Pro has been in surface-mode before, the surface interval appears as well. You go back into ready-mode or surfacemode by B and.
2. In order to activate the logbook, bridge contacts B and E. The most recent dive is displayed (DIVE 1).

3 Selection of Dive

1. Bridge contacts B and + to get the information of the dive preceding the most recent one. Display <DIVE 2> appears.
2. On every further bridging B and + the logbook jumps to the next older dive (DIVE 3).

4. The display shows no-stop times for increasing depths (scrolling no-stop times, see page 63, planning of a no-stop dive).
3 Selection and Activation from Surface-Mode
1. From surface-mode, you switch into the dive-plan input stage by B and.
. You return to surface mode by B and +.
3. After confirming by B and E, the display shows <Add>, <Int> and the interval (flashing). Aladin Pro expects your input for the duration of the dive interval.
4a. If no surface interval is to be entered, (diving at the present moment), confirm this with contacts B and E, and you switch into no-stop planning.
4b. You can extend the interval with contacts B and +. B and shorten the interval.
5. You confirm the new interval with B and E and get to no-stop planning (page 63).
4 Planning a No-Stop Dive
After confirming the surface interval (if possible), no-stop times are displayed in 3-metre-increments. The process starts at the deepest depth where the no-stop time is for the first time less than 99 minutes. The no-stop time for every 3metre-increment is displayed for about 3 seconds (scrolling no-stop times).
Repetitive dives usually cause more microbubbles in the lungs than first dives if the surface interval is not long enough. Too rapid ascent and/or disregard of decompression instructions can lead to microbubbles. By calculating the formation of bubbles, Aladin Pro is able to advise the diver to extend the surface interval if necessary. If <Atn> is displayed instead of the depth in addition to the no-stop times, the diver should plan an extension of the interval if possible. This reduces the risk of many microbubbles in the lungs for the planned dive.
By repeated recalculations of the dive-plan with varying surface intervals the minimum interval can be found out. When diving in spite of the display <Atn>, a clear shortening of the no-stop time and an extension of decompression has to be expected. If a dive is made during <Atn> -time, the <Atn>-time following the dive can increase considerably.
5 Planning a Decompression Dive
1. In order to plan a dive that requires decompression, wait until the scrolling no-stop time shows the desired depth.

......................................................................

VIII TROUBLE SHOOTING

1symptom Shooting Trouble possible reason(s) _____________________________________ 72 procedure(s)

VIII Trouble Shooting

1 Trouble Shooting
symptom Altitude section does not correspond to the current altitude. possible reason(s) Atmospheric pressure is especially high or low. Air pressure measured by the computer is wrong. procedure(s) Check meteorological information. Send in dive computer for servicing (only if altitude section is wrong by more than one section, see chapter III 6). Study chapter III 5 very carefully. Plan sufficiently long surface interval and dives at lower risk.
Desaturation time and/or no fly time are very long.
Slow tissue and/or little workload at the surface. Many repetitive dives, yoyo-diving or disregard of decompression stops have caused a large number of microbubbles, which have to decrease first. Many repetitive dives, too fast ascents, yoyo-diving or disregard of decompression stops have caused a large number of microbubbles, which have to decrease first.
<Atn> appears in place of the diving depth on the display.
Plan sufficiently long surface interval and dives at lower risk. Study chapters III 5 and IV very carefully.
symptom An unexpected decompression stop appears in place of no-stop time or decompression increases in leaps. Attention messages are not given acoustically. possible reason(s) Too rapid ascent or ignoring decompression stops have caused a large number of microbubbles, which leads to an attention message (warning of bubbles). The acoustic signal of the attention messages is switched off. procedure(s) Plan sufficiently long surface interval and dives at lower risk. Study chapters III 5 and IV very carefully.
Reactivate these attention messages by means of the interface.
.................................................................
symptom possible reason(s) procedure(s).....

IX APPENDIX

1 Maintenance of Aladin Pro Dive Computer 2 Technical Information 3 Warranty _____________________________________ 76 _____________________________________ 78 _____________________________________ 3.1 Recognition of warranty ________________ 3.2 Scope of the warranty __________________ 3.3 Warranty period and claim ______________ 79 80
4 Important Remarks about Safety
_____________________________________ 81

IX Appendix

1 Maintenance of Aladin Pro Dive Computer
Aladin Pro is almost maintenance free. Maintenance is restricted to changing batteries and rinsing with freshwater. In spite of that, some recommendations can contribute to the prevention of troubles and a higher life expectancy for the computer: Avoid sharp impacts and intense sunlight. Rinse your Aladin Pro with freshwater after a dive in the sea. The Aladin Pro should be stored dry in an aeriated receptacle. Storage in an air-tight receptacle has to be avoided. If there are problems with the operation of the contacts, the surface of the housing can be treated with silicon spray or silicon grease. Clean the Aladin Pro well with soap water beforehand and dry it thoroughly. Never pressure XXXXXX Aladin Pro out of water.

There are borings in two of the contacts for the reception of the PC-interface connections. Free these borings from dirt with a needle if necessary.
Take the dive computer to an authorized retailer in order to change the batteries. The actual change of the batteries is made at the manufacturers or the importers. The computer is checked for its technical functioning at the same time. If you follow these recommendations, you will enjoy a reliable Aladin Pro for a long time.

2 Technical Information

Operating altitude: with decompression information: sea level up to approx. 4000 m without decompression information: unlimited no limitation for diving with compressed air quartz timer, display up to 199 minutes

Operating depth: Clock:

Operating temperature: -10 C to +50 C Power supply: Life of the battery: Special battery Uwatec LR07 (standard values) For an average diving time of 60 minutes and a decompression time of 20 hours after every dive: Number of dives per year Life (years) 6 4

3 Warranty

Please pay attention to the following remarks on warranty claims: 3.1 Recognition of warranty 3.2 Scope of the warranty The warranty only covers dive computers, which have been provably bought from an authorized retailer or from the manufacturer. The manufacturer undertakes to rectify all defects which are provably traceable to defects of material or faults in production. The manufacturer decides about the qualification of a warranty claim and about the way of mending possible defects. This may be by repair of the computer free of charge, the replacement of faulty parts or replacement of the entire computer. Excluded are faults or defects which go back to: Unqualified operation or strain Exterior influences, e.g. transport damages, damages due to bumping and hitting, meteorological influences or other natural phenomena. Servicing, repairs or the opening of the dive computer by anybody not authorized by the manufacturer. This especially concerns the change of batteries of the dive computer. Pressure tests which do not take place in water. Diving accidents.

3.3 Warranty period and claim The warranty is given for a period of 12 months. Repairs or replacements during the warranty period do not extend the original warranty period. In order to put forward a warranty claim, send the dive computer together with a dated receipt of the purchase to your authorized retailer or an authorized servicing point. The manufacturer does not have to accept extensions of the warranty granted by national importers.
The Aladin Pro offers a high measure of comfort and safety to the diver but the dive computer does not replace a profound dive training. Pay strict attention to the optical and acoustic alarm signals emitted by Aladin Pro. Avoid risk situations, which are marked or in this manual.
Always observe the basic diving rules, which are also valid when diving with Aladin Pro: Never dive alone - Aladin Pro does not replace a diving partner! Always dive according to your level or training. Aladin Pro does not increase your abilities as a diver! Due to the danger of nitrogen narcosis, do not dive lower than 40 metres. Aladin Pro does not warn you in this respect. The safety concept of Aladin Pro includes this extensive operating manual. Confirm with your signature below that you have read this operating manual carefully and completely.

Signature