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Aladin PRIME

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Safety considerations
You must carefully read and understand this entire manual before using your Aladin PRIME.

WARNING

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 Aladin PRIME.
Guidelines for the use of Aladin PRIME: The following guidelines for using Aladin PRIME 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. Aladin PRIME is designed for dives with compressed air (21%O2) and Nitrox (22 to 50%O2) only. Do not use Aladin PRIME 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 Aladin PRIME with open circuit breathing systems. Only use Aladin PRIME for diving with an independent breathing apparatus. Aladin PRIME is not designed for long term exposures with Nitrox. Always observe the visual and audible alarm signals. Avoid situations of increased risk which are marked with a warning sign in this operating manual. Aladin PRIME has a ppO2 warning. The default limit is set at 1.4bar ppO2max. It can be changed between 1.2 and 1.6bar. Frequently check the "oxygen clock" (CNS O2). 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. Aladin PRIME 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 Aladin PRIME 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 5m /15ft) 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 (30ft) 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. Aladin PRIME does not substitute for a dive buddy. Only make dives that are appropriate to your level of dive training. Aladin PRIME 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. Avoid repeated ascents and descents (yo yo diving).

I UWATEC Aladin PRIME

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 Aladin PRIME! 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%. When 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. Do not attempt a repetitive dive if the no-dive warning is visible on the display. 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. Diving after a reset of the remaining saturation (reset, see page 32, or battery replacement, see page 35) may lead you into potentially hazardous situations which could result in death or serious injury. After a reset of the remaining saturation do not dive for at least 48 hours.

2 Attention messages and alarms 2.1 Attention messages 2.2 Alarms 3 Preparation for the dive 3.1 Setting the gas mixture and ppO2max 3.2 Preparation for the dive and function check 4 Functions during the dive 4.1 Immersion 4.2 Dive time 4.3 Current depth / O2% mix 4.4 Max depth / Temperature 4.5 Ascent rate 4.6 Partial pressure of oxygen (ppO2max) / Maximum Operating Depth (MOD) 4.7 Oxygen toxicity (CNS O2%) 4.8 Nitrogen loading bar graph 4.9 Decompression information 4.10Safety stop timer 5 Functions at the surface 5.1 End of a dive 5.2 Residual nitrogen bar graph 5.3 Desaturation time, No-fly time and No-dive warning
____________________________________ 4 ____________________________________ 5 ____________________________________ 7
6 Diving in mountain lakes 6.1 Altitude ranges 6.2 Prohibited altitude 6.3 Decompression dives in mountain lakes ___________________________________ 27 ___________________________________ 27 ___________________________________ 27 ___________________________________ 27 ___________________________________ 28 ___________________________________ 28 ___________________________________ 28 ___________________________________ 29 ___________________________________ 29 ___________________________________ 29 ___________________________________ 31 ___________________________________ 31 ___________________________________ 32 ___________________________________ 35 ___________________________________ 35 ___________________________________ 35 ___________________________________ 35 ___________________________________ 37 ___________________________________ 37
IV Dive planner 1 Planning a no-stop dive 2 Leaving the dive planner V Logbook 1 Survey 2 Operation VI Settings 1 Menu "set 1" 2 Menu "set 2" VII Appendix 1 Technical information 2 Maintenance 2.1 Replacing the battery 3 Warranty 4 Index
II System and operation 1 System description

SmartTRAK

Infrared port
Infrared Interface (option)

2 Operation

On page 5 and 13 you will find an operating schematic. 2.1 Push buttons Aladin can be operated with two push buttons ( ). Operation of the push buttons is divided into "press" ( / ) and "press and hold (1 second)" ( / ). At the surface: / Switch on Aladin (time of day display) Comparable to the ENTER or RETURN key of a keyboard Enter into the displayed sub menu Open the displayed setting Confirm or enter the displayed value or setting / Scroll through a menu / Once entered with into a sub menu or setting: Increase ( ) or decrease ( ) the indicated value Change the setting Switch on the backlight Exit the current function or menu and switch to the time of day display Switch off Aladin Under water: Access alternate displays Switch on the backlight Activate the safety stop timer (dive mode only, in depths < 6.5m / 21ft) 2.2 Water contacts On submerging in water the water contacts switch on Aladin automatically. If you have chosen the option "Water contacts off" ("set 1", ->32), Aladin will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.

Push buttons Water contacts

II UWATEC Aladin PRIME

Aladin displays all important dive and decompression data and has a memory which stores the full dive data. The data can be transmitted with an infrared interface (IrDA) and SmartTRAK software to a Windows personal computer. SmartTRAK software CD is included with the Aladin package. Infrared interfaces are available in PC stores; a list of recommended interfaces is available on our website (www.scubapro-uwatec.com).
2.3 SmartTRAK With SmartTRAK you can configure Aladin, transfer dive data to a personal computer and graphically display the data. To start the communication, turn on Aladin and place it so that its infrared port is in front of the infrared interface. If Aladin detects an infrared device within range appears. Configuring Aladin To configure Aladin, select "Dive Computer Settings" under "OPTIONS" on the main menu bar of SmartTRAK after having established communication between your PC and Aladin. The following window will appear:
When making any changes to the settings via SmartTRAK, you must press the "Write" icon for the changes to take effect.
The following settings may be changed with SmartTRAK or via "set 1" or "set 2" directly on Aladin: Setting Maximum partial pressure of oxygen (ppO2max) Time limit to reset the O2% mix to air Unit system Audible attention signals Water contacts Reset desaturation Alarm clock UTC (Universal Time Change) zone Time of day 24 or AM/PM setting Date Display contrast Sound Range 1.2-1.6bar no reset / 1 - 48hrs metric/imperial on / off (SmartTRAK: selective) on / off on / off 0 - 23h 59min, on/off 13hrs, increments: 15min hours:minutes 24 (off) / AM/PM (on) 1 (low) -12 (high) on / off Default 1.4bar no reset on on no reset 12:00, off

Page 34

The following data may be recalled with SmartTRAK: Number of past dives Total duration of dives Deepest dive Longest dive Atmospheric pressure Dive profile Logbook Temperature curve Alarms and attention messages Battery condition
Downloading your dives Aladins memory allows you to store approximately 25 hours of dive profile information in 4 second sampling intervals. With SmartTRAK you can transfer this information to the PC in order to visualize and analyze your dives on the monitor. To download data from Aladin, click on "NEW" under the "LOGBOOK" menu to open and name a new logbook or open an existing logbook. Then click on the "TRANSFER DIVES" icon: a box will appear on the screen identifying the computer being downloaded, and a progress bar will show the status of the transfer. You can choose between transferring all dives or new dives only (default setting) from Aladins memory. If you choose to transfer new dives only, SmartTRAK will only transfer dives that are more recent than the most recent dive already saved in the PC logbook. To transfer all dives, you must change the default setting by selecting "Transfer" under "Dives" in the main menu bar. Once the data is downloaded, a window will show you a summary table of all dives; for the selected dive, another window will show you its details. From these windows you can add and edit your dive information.

Dive window

Dive information panel Dive computer display

Dive profile panel

Tissue panel Physiology panel
Alarm symbols Notes panel

Dive table

2.4 Switching on the display automatically, on submerging in water* or when adaptation to atmospheric pressure is necessary; or. If switched on with all segments manually, by pushing light up for 5 seconds. CNS O % Afterwards the display shows the time of the day, the O2 mix and the temperature. This display is called time of day display. Most navigation descriptions start from this display. At the surface Aladin returns automatically to this display.

Time of day display

If there is a remaining saturation from the last dive or from a change of altitude, Aladin also displays the "do not fly" time, the "do not fly" icon, the current altitude range and the prohibited altitude range (->27). When Aladin is in state of rest no information is displayed but the atmospheric pressure is continuously monitored. If a change in altitude range is detected, Aladin switches on for 3 minutes automatically ->27.
* Only if the option "Water contacts on" ("set 1", ->32) is chosen. See warning ->9.
2.5 How to navigate Aladin at the surface Starting from the time of day display you can enter into different menus.
->33 ->33 ->33 ->33 ->33 ->34 ->34 ->34 ->34 ppO2 max Reset to air Unit system Attention beep on /off Water contacts on /off Reset desaturation ->31 ->31 ->31
Enter with into the function or sub menu. With you can switch to the time of day display. After 3 minutes without operation Aladin returns to the time of day display.
Alarm clock UTC time zone Time of day 24h / AM PM Date LCD contrast IrDA speed Sound on / off Electronic ID
2.6 Checking the desaturation time No-fly time Do not fly icon

No-dive warning

From the time of day display you can check the desaturation time* by pushing. Desaturation time is determined either by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time. The display switches back to the time of day display after 5seconds without operation.
* Only displayed if there is a remaining saturation due to the last dive or change of altitude.

Residual nitrogen bar

Desaturation time Oxygen toxicity
For the calculations of the desaturation and no-fly time it is assumed that the diver breathes air while on the surface.

2.7 Checking the surface interval From the time of day display you can check the surface interval by pushing (logbook menu). The surface interval is the time since the end of the last dive and is displayed as long as there is remaining saturation. Surface interval
2.8 Displaying the date From the time of day display you can display the date by pushing 1x or 2x (depending on whether there is desaturation time left). The display switches back to the time of day display after 5 seconds without Date operation.
2.9 Checking the battery condition From the time of day display you can check the battery condition by pushing 2x or 3 x (depending on whether there is desaturation time left). Aladin displays the estimated remaining battery performance for 5 seconds as a bar graph. If the bar graph shows 3 segments the battery warning appears ->19 and the battery has to be replaced ->35. If the bar graph shows 2 segments, the battery Battery condition / symbol will blink, on the surface and in dive WARNING performance mode, to alert the diver of a dangerous situation: the battery may not have enough energy to finish a dive. Replace the battery when the steady battery symbol appears (3 segments)!
The temperature influences the battery performance. In cold water it is lower than in warm water. If the battery shows 4 segments on the surface, it is possible for it to drop to 3 segments during the dive. If this is the case, the backlight will be temporarily disabled. See below. Battery performance high enough for diving. Battery warning appears. Backlight deactivated. Replace the battery! ->35

Bar graph interpretation

Flashing battery warning. Audible alarms and attention messages disabled! Backlight deactivated! Risk of computer malfunction. Do not let the battery reach this condition!
Diving not possible, dive planner and settings are disabled Aladin marks dives started with 3 or less segments in the logbook with the battery symbol. Logbook information is not lost even when the battery is removed for a long time.
2.10 Active backlight The display of Aladin can be illuminated both on the surface and underwater. The backlight can be activated by pushing. The light will turn off automatically after 6 seconds. The backlight can only be activated if the computer display is on.
Repeated activation of the backlight will reduce battery life.

2 Operation / 3 SOS mode

2.11 Switching off the display From the time of day display you can switch off Aladin by pushing.

Decompression stop All required decompression stops must be observed.
Total ascent time to surface (7min) Time Depth 3m 6m
Deepest decompression stop depth

DECO STOP

2min Decompression stop duration
Decompression stop depth Deepest stage is displayed. Decompression stop duration Prescribed duration of the decompression stop at the displayed decompression stage (minutes).
35.7m No-stop range Decompression range
Total ascent time Including decompression stops in minutes.

III UWATEC Aladin PRIME

1 Terminology / Symbols
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 risk of oxygen toxicity rises with the increase of the fraction of oxygen and the increase of depth and can limit dive time and the maximum depth. Aladin includes this in the calculations and displays the necessary information: O2% mix Fraction of oxygen: The fraction of oxygen in the Nitrox mixture can be set between 21% (normal compressed air) and 50% in 1% increments. Your selected mix will be the basis for all calculations. Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen in the mixture, the shallower the dive depth at which this value of the partial pressure of oxygen is reached. The depth at which ppO2max is reached is called Maximum Operating Depth (MOD). When you enter the settings for the gas mixture, Aladin will display the ppO2max limit setting and the corresponding MOD. Aladin warns you audibly and visually once the depth is reached at which the ppO2 reaches the maximum allowed value ->23. Default setting of ppO2max is 1.4bar. The value of ppO2max can be set by means of SmartTRAK or with "set 1" between 1.2 and 1.6bar (->31). It can also be changed at the time of setting the gas mixture (->20). The CNS O2% value/alarm is not influenced by the selected ppO2max setting. CNS O2% 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 0.5bar, the CNS O2 value increases, if the partial pressure of oxygen is below 0.5bar, the CNS O2 value decreases. The closer the CNS O2 value is to 100%, the closer the limit where symptoms of oxygen toxicity can occur.

ppO2max

Depth at which ppO2 reaches 0.5bar for three commonly used mixes 21% 13m (43ft) 32% 6m (20ft) 36% 4m (13ft)

ppO2 0.21bar CNS O2% decreases 0.5bar 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
Aladin draws the divers attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are visual and / or audible.
If you turn off the sound you will have no audible warnings. Without audible warnings you could inadvertently get into potentially hazardous situations which could result in death or serious injury. Serious injury or death may result from failing to immediately respond to alarms given by Aladin. 2.2 Alarms 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.

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. 4s (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 / ppO2max is reached Oxygen toxicity reaches 75% No-stop time less than 3 minutes Prohibited altitude (surface mode) Entering decompression 24
An alarm occurs in the following situations (more information can be found on the listed pages): Page 22
Oxygen toxicity reaches 100% Ignored decompression Exceeding the prescribed ascent rate (Particular scale of beeps, ->22) Low battery alarm (without audible alarm): the battery icon appears if the battery has to be replaced.
The audible attention messages can be switched off in "set 1" ->31 or SmartTRAK. With SmartTRAK they can be switched off selectively. In addition, the sound can be turned off completely in "set 2" ->34.
3 Preparation for the dive
You have to check the settings of Aladin especially before the first dive. All settings can be checked and changed directly at Aladin or via SmartTRAK.

3.1 Setting the gas mixture and ppO2max
Before every dive and after changing the tank, make sure that the settings for the gas mixture correspond with the current mixture used. An incorrect setting causes Aladin to miscalculate this particular dive. If the fraction of oxygen is set too low this can lead to oxygen poisoning without warning. If the value is set too high decompression sickness may occur. Inaccuracies in the calculations are carried over to repetitive dives. To set the gas mixture, Aladin must be in user mode (time of day display).

or until

1. Push appears.
until the symbol for the setting of the O2 mixture
2. Confirm that you wish to change the displayed oxygen fraction by pushing. 3. Change the oxygen fraction in increments of 1% by pushing or. Aladin will display the current fraction of oxygen, the maximum partial pressure limit (ppO2max) and the MOD.
Max Operating Depth MOD Change the O2% mix by (+) and () ppO2max
4. Confirm the selected percentage with
5. By pushing or you can change the ppO2max for the chosen fraction of oxygen down to 1.0bar. Aladin will now display the corresponding MOD for the new ppO2max. Change the ppO2max by (+) and () 6. Confirm your ppO2max settings with.
Without confirmation the display will disappear after 3 minutes and your entries will not be accepted. Automatic reset of the O2% mix to 21% can be set with "set 1" ->31 or SmartTRAK between 1 and 48 hours or to "no reset" (default).
3.2 Preparation for the dive and function check Switch on Aladin by pushing and check the test display: Are all elements of the display activated? Do not use Aladin if the display does not show all elements. When switching on Aladin with , the test display will not appear.
Check the battery capacity before each dive ->15.
4 Functions during the dive
4.1 Immersion If the water contacts are deactivated (->32), switch on Aladin before immersion.
After immersion, starting at a depth of about 0.8m (3ft), all diving functions are monitored, i.e. depth and dive time displayed, maximum depth stored, saturation of tissues calculated, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression procedure supervised. 4.2 Dive time Dive time

The whole time spent below a depth of 0.8m (3ft) is displayed as dive time in minutes. The time above 0.8m (3ft) is counted as dive time only if the diver descends again below 0.8m (3ft) within 5 minutes. While the dive time is running, the colons on the right of the figures are 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.
4.3 Current depth / O2% mix Current depth is given in 10cm increments in metric setting and 1ft increments in imperial setting.
At a diving depth of less than 0.8m (3ft) the display shows " ".
Current depth O2% mix Nitrogen loading bar
The O2% mix is diplayed as long as CNS O2% = 0 and no ascent speed is indicated. Depth measurement is based on salt water. Therefore, Aladin shows a slightly (3%) shallower depth than actual when diving in fresh water. No calculation however is affected.
4.4 Maximum depth / Temperature Maximum depth is only displayed if it exceeds the current depth by more than 1m (3ft) (maximum indicator function). If maximum depth is not displayed, Aladin shows the temperature.
Max depth CNS O2% > Temperature, O2 mix > Temperature , Time > Max depth

, O2 mix

If you have chosen the option "Water contacts off" ("set 1" or SmartTRAK), Aladin will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.

4.5 Ascent rate

Optimal ascent rate varies depending on depth between 7 and 20m/min (23 and 67ft/min). It is displayed as a percent of the reference variable ascent rate. 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. Aladin provides an audible alarm if the ascent rate is 110% or greater. The intensity of the alarm increases in direct proportion to the degree that the prescribed ascent rate is exceeded. 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. In case of an improper ascent Aladin may require a decompression stop even within the no-stop phase because of the danger of microbubble formation. The decompression duration necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded. From great depth a slow ascent may cause heightened saturation of tissues and an extension of both decompression duration and total ascent time. At shallow depth, a slow ascent may shorten the decompression duration. Display of the ascent rate has the priority over "CNS O2".

4.8 Nitrogen loading bar graph The nitrogen loading bar gives a graphical representation of how close to decompression you are. As you absorb nitrogen during the dive, more and more segments of the bar will light up. Depending on your depth, the segments can light up more or less rapidly. 1-3 segments (green area): you are safely within the no-stop range. 4-5 segments (yellow area): you are approaching decompression. When the no-stop time drops below 3 minutes the 5 segments will start flashing.* 6 segments (red area): you now have mandatory decompression obligation(s) which you must observe before reaching the surface.
* Depending on your profile, the no-stop time may drop below 3 minutes before the upper 5 segments are lit. In this case, only those segments that are lit will flash.
If you have entered decompression, the 6th segment will turn off as soon as you complete your last decompression obligation to indicate that you are no longer in decompression.
4.9 Decompression information NOSTOP and the no-stop time (minutes) are displayed if no decompression stops are necessary.
No-stop display "99:" means remaining time of 99 minutes or more. No-stop time is influenced by the water temperature. If no-stop time drops below 3 minutes, an audible attention signal is activated, the no-stop value and the nitrogen loading bar begin 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.
No-stop time Nitrogen loading bar 4s
No-stop time less than 1minute
Decompression values On entering the decompression phase, "NO STOP"disappears, the symbol appears and an attention beep goes off. The nitrogen loading bar stops Decompression obligation flashing and the 6th segment lights up (red area). The deepest decompression stage in metres (feet) is displayed and the decompression stop duration of the displayed stage appears in minutes. The display "7: 3m (10ft)" means that a decompression stop of 7 minutes at a depth of 3m (10ft) has to be made.
Decompression stop duration Decompression depth
When a decompression stop has been completed, the next (shallower) decompression stop is displayed. When all decompression stops have been completed, the symbol extinguishes, "NO STOP"and no-stop time reappear.
Deco stop depths deeper than 27m (90ft) are displayed as " : ".
Ignored decompression alarm
The decompression alarm is activated if the decompression stop is ignored. The arrow , 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 , the decompression stop duration and decompression stop 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 (->16). If the total (cumulative) duration of the decompression alarm is longer than one minute, it is entered in the logbook.

Total time of ascent

Descend to the prescribed decompression stop depth immediately! As soon as decompression stops are necessary Aladin 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. Total time of ascent can be subject to change if the ascent rate is not ideal (100%). Ascent time greater than 99 minutes is displayed as " ".

Total ascent time

On all dives with Aladin, make a safety stop for at least three minutes at a depth of 5m (15ft).

4.10 Safety stop timer

The safety stop timer displays the time span a diver should spend at the safety stop depth at the end of the dive. The timer is activated by the diver and counts back from 3 minutes to zero. It can be restarted any number of times. The safety stop timer can be activated under the following conditions: depth <6.5m (21ft), no-stop display 99 minutes. Activate the safety stop timer by pressing. The timer begins to count backwards and a bookmark will be created in the dive profile. If you press again, the timer will start again from the full value. The safety stop timer will switch off automatically if the depth exceeds 6.5m (21ft) or the no-stop phase is shorter than 99 minutes.
Safety stop icons Remaining Minutes time span Seconds
5 Functions at the surface

5.1 End of a dive

After reaching the surface (<0.8m/3ft) Aladin 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. The time of day is then displayed for 3 minutes, after which the computer turns off.
Depth less than 0.8m (3ft)
5.2 Residual nitrogen bar graph The segments in the residual nitrogen bar graph will gradually turn off as Aladin follows the offgassing of your tissues during your surface interval. There is a 1:1 equivalence in the meaning of the segments between diving and surface. Thus, on a repetitive dive the bar will resume from its status on the surface just prior to the dive. There are two exceptions however: the uppermost segment will stay lit until the desaturation time is completely extinguished. This is done to show that there is desaturation time left and that a dive started at this point will be logged as a repetitive dive. If the remaining desaturation time is very short, this segment could however at first disappear during the dive; during the 24 hours of an SOS-lock, all segments will stay on. 5.3 Desaturation time, No-fly time and No-dive warning 5 minutes after a dive Aladin shows the time of day, the "do not fly time", the No-fly time no-dive warning (if applicable), the current altitude range and the prohibited Do not fly icon altitude range (->27). No-dive No-fly time is the time in hours that should pass before a flight and is diswarning played and adjusted until the value becomes 0 hours.

WARNING WARNING

Flying while Aladin displays "do not fly" may lead to serious injury or death from decompression sickness. If the "no-dive" warning is visible during the surface interval, the diver should not undertake another dive.
Time of day Residual nitrogen bar Ascent to altitude range 4 prohibited
To check the remaining desaturation time and oxygen toxicity press.
To check the elapsed surface interval press.

Desaturation time

Oxygen toxicity Desaturation time is determined either by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time.

Surface interval

If Aladin detects a situation of increased risk (due to the potential of microbubble accumulation from previous dives or a CNS O2 level above 40%), the no-dive symbol will appear on the display. The duration of the no-dive warning is visible in the dive planner menu. Aladin recommends this as minimum surface interval in order to reduce the number of microbubbles and/or to reduce the CNS O2 level below 40%. You should not undertake a dive as long as the no-dive warning message is displayed on the computer screen. If the warning is prompted by microbubble accumulation (as opposed to CNS O2 over 40%) and you dive anyway, you will have shorter no-stop times or longer decompression times. Moreover, the duration of the no-dive warning at the end of the dive can increase considerably.
6 Diving in mountain lakes

6.1 Altitude ranges

Altitude icon Altitude range 2
Aladin measures the atmospheric pressure every 60 seconds even while the display is switched off. If the computer detects a sufficient increase in altitude, it switches on automatically and indicates the new altitude range (1-4) and the desaturation time. Desaturation time indicated at this moment refers to adaptation time at this altitude. If the dive starts within this adaptation time, Aladin treats it as a repetitive dive, since the body is offgassing. Altitude is divided into five ranges, which are influenced by barometric pressure. That is why the defined altitude ranges overlap on their fringes. If a mountain lake is reached, the altitude range is indicated at the surface (time of day display), in the logbook and in the dive planner by a stylised mountain and the current altitude range. Sea level to an altitude of approximately 1000m (3300ft) is not indicated. In the following diagram, you can see the Switching approximate breakdown at approx. of the altitude ranges: No deco data 610mbar
gauge mode 4000m 13120ft 3000m 9840ft 2000m 6560ft 8.85psi

VII UWATEC Aladin PRIME

VII Appendix
Never touch the metal surface of the battery with bare fingers. The two battery poles must never be short circuited.
Procedure: To replace the battery you need a coin or the SCUBAPRO universal tool and a clean cloth.
A leaking battery cap may lead to the destruction of Aladin by water seeping in or cause Aladin to switch off without prior notice. Always open the battery compartment in a dry and clean environment. Only open the battery compartment to replace the battery. 1. Dry Aladin with a soft towel. 2. Turn the battery cap with a coin or with the SCUBAPRO universal tool. 3. Remove the battery cap. 4. Remove the o-ring carefully. Do not damage the sealing surfaces. SCUBAPRO universal tool
5. Remove the battery. Do not touch the contacts. Protect the environment and dispose the battery properly.
If you notice traces of seeping water, damages, or other defects on the o-ring, do not use Aladin for further dives. Take it to an authorized SCUBAPRO UWATEC dealer for check and repair. 6. Always insert a new o-ring when you replace the battery and dispose the old o-ring. Make sure that the new o-ring is in perfect condition, and that o-ring, o-ring groove and the sealing surfaces are free of dust and dirt. If necessary, clean the parts with a soft cloth. Fit the o-ring in the o-ring groove of the battery cap.
7. Use only an original UWATEC o-ring PN 06.201.610. This o-ring is Teflon coated and does not require additional lubrication. 8. Do not lubricate the o-ring as the lubricant will chemically attack the battery cap.
9. Check the proper polarity of the battery. Aladin can be damaged if you do not insert the battery correctly. Insert the new battery, with "+" pointing outwards, into the battery compartment. After battery replacement Aladin will perform an automatic test (8s) and gives a short beep when the test is done. 10. he battery cap can be installed with a 120 offset. The T alignment circles are there to ensure proper positioning of the cap. If the rotation is stopped before alignment, watertightness may not be ensured. If the rotation is forced beyond the alignment, the cap may break. Damage to Aladin due to improper placement of the battery cap is not covered by warranty.

2.4 Switching on the display automatically, on submerging in water* or when adaptation to atmospheric pressure is necessary; manually, by pushing or. If switched on with all segments light up for 5 seconds.

AMPM DESA DESAT

NO STOP STOP
Afterwards the display shows the time of the day, the O2 mix and the temperature. This display is called time of day display. Most navigation descriptions start from this display. At the surface Aladin returns automatically to this display. If there is a remaining saturation from the last dive or from a change of altitude, Aladin also displays the <do not fly> time, the <do not fly> icon, the current altitude range and the prohibited altitude range (->27). When Aladin is in state of rest no information is displayed but the atmospheric pressure is continuously monitored. If a change in altitude range is detected, Aladin switches on for 3 minutes automatically ->27. * Only if the option "Water contacts on" ("set 1", ->41) is chosen. See warning -> 10.

Time of day display

2.5 How to navigate Aladin at the surface Starting from the time of day display you can enter into different menus. With and you can scroll through the menu. Time of day display
Off (Desat. time CNS O2% ) ->12 Logbook ->37 Date ->43 LCD contrast ->43 IrDA speed ->43 TEC Microbubble Level L0-L5 ->30 Sound on / off ->44 Electronic ID ->44 24h / AM PM ->43 Time of day ->42 UTC time zone ->42 Set 1 ->39 TEC Depth alarm ->39 Reset desaturation ->41 Set 2 ->42 Water contacts on /off ->41 Attention beep on /off ->41 TEC Backlight duration ->40 TEC Dive time alarm ->39 TEC Safety stop duration ->40 TEC ppO2 max ->40 Reset to air->40 Unit system ->40 Dive planner ->35
With you can scroll through the displays Enter with into the function or sub menu.
O2 mix TEC ppO2 max. ->18

Alarm clock ->42

TEC Gauge mode on / off ->28 TEC Altitude ->27 (adjustment ->39)
With you can switch to the time of day display. The menu points marked with "TEC" appear only on Aladin TEC.
TEC Salt- / fresh water ->40
After 3 minutes without operation Aladin returns to the time of day display.
2.6 Checking the desaturation time No-fly time Do not fly icon

DESAT DESA

Microbubble warning
From the time of day display you can check the desaturation. Desaturation time is determined either time* by pushing by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time. The display switches back to the time of day display after 5 seconds without operation. * Only displayed if there is a remaining saturation due to the last dive or change of altitude.

2 Operation / 3 SOS mode

2.11 Switching off the display From the time of day display you can switch off Aladin by pushing.
On the surface Aladin switches off automatically after 3 minutes without operation. 2.12 Alarm clock The alarm clock goes off only at the surface. If the alarm clock is "on", the time of day display shows.
When alarm is triggered: flashes and special attention beeps are played for 30 seconds or until the user presses a button. Setting the alarm clock: ->42 ("set 2")

3 SOS mode

Activation: automatic If the diver remains above a depth of 0.8m (3 feet) for more than three minutes without observing a prescribed decompression, the computer will automatically switch into SOS mode after the dive. While in SOS mode, the computer cannot be used for diving. TEC: the computer can be used in gauge mode ->28. All segments in the nitrogen loading bar will flash throughout the dive. The SOS mode will be unlocked after 24 hours. Diving within 48 hours after the end of an SOS mode will result in shorter no stop times or longer decompression stops. Push to see the "SOS" sign and the remaining length of the SOS mode. The dive will be entered in the logbook with "SOS". Serious injury or death may result if a diver does not seek immediate treatment should any signs WARNING or symptoms of decompression sickness occur after a dive. Do not dive to treat symptoms of decompression sickness! Diving in SOS mode is extremely dangerous and you must assume full responsibility for such behaviour. UWATEC will assume no liability. A diving accident can be analyzed at any time in the logbook and downloaded to a PC by means of the infrared interface (IrDA) and SmartTRAK software.
Time remaining until SOS mode switches off automatically
III Diving with Aladin 1 Terminology / Symbols
The information on the display of Aladin varies depending on the kind of dive and the dive phase.
TEC For information about diving with microbubble levels (MB levels) see chapter V ->30. 1.1 General terminology / Display during no-stop phase
Oxygen toxicity CNS O2% Ascent rate (Only while ascending) Current depth In metres (feet)
O2% Mix Selected oxygen fraction
No-stop phase Dive phase during which surfacing is allowed without stop.
Decompression phase Dive phase during which surfacing is allowed only after decompression stops are completed.

Time Depth

Dive time Duration of the dive (min)
Nitrogen loading bar No-stop time Remaining time at a given depth during which ascent is allowed without decompression stop (min). 2x

Current depth

ppO2 0,21 bar CNS O2% decreases 0,5 bar CNS O2% increases

ppO2 max.

Nitrox diving may only be attempted by experienced divers after proper training from an internationally recognized agency.
2 Attention messages and alarms

Aladin

draws the divers attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are visual and / or audible. The audible attention messages can be switched off in "set 1" ->41 or SmartTRAK. With SmartTRAK they can be switched off selectively. In addition, the sound can be turned off completely in "set 2" ->44. If you turn off the sound you will have no audible warnings. Without audible warnings you could inadvertently get into potentially hazardous situations which could result in death or serious injury. Serious injury or death may result from failing to immediately respond to alarms given by Aladin. 2.2 Alarms 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.

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 TEC Set maximum depth is reached Oxygen toxicity reaches 75% No-stop time less than 3 minutes Prohibited altitude (surface mode) Entering decompression (when diving with L0) TEC Half of set dive time is reached TEC Set dive time is reached TEC Diving with microbubble levels (L1-L5): MB no-stop time = 0 MB level stop ignored MB level reduced Entering decompression when diving with MB level L1-L20
An alarm occurs in the following situations (more information can be found on the listed pages): Page Oxygen toxicity reaches 100% 23 Ignored decompression 25 Exceeding the prescribed ascent rate 22 (Particular scale of beeps, ->22) TEC Altitude alarm 27 Low battery alarm* see below Low battery alarm The battery icon appears if the battery has to be replaced ->45.

** Switching on Aladin with
test display will not appear.
Check the battery capacity before each dive ->13.
3.4 Overview Aladin settings Configure Aladin according to your needs. Setting Range Default / Setting in Aladin PRIME 21% O2 L0 off
Setting the gas mixture and TEC MOD TEC Setting the MB level TEC Gauge mode TEC Altimeter
21-50% O2, TEC 21-100% O2 L0-L5 on / off
->18 ->32 ->28 ->39
The following settings may be changed with "set 1" (->39) or SmartTRAK: TEC Depth alarm TEC Dive time alarm TEC Safety stop duration TEC Maximum partial pressure of oxygen (ppO2 max) Time limit to reset the O2% mix to air Unit system TEC Water type TEC Backlight illumination duration Audible attention signals Audible attention signals Water contacts Reset desaturation 5 - 100 m (20 - 330 feet) on/off 40m (130ft), off ->39 ->39 5-195 min., on/off 60 min., off ->40 1-5 min. 3 minutes 1.2-1.6 bar no reset / 1 - 48 hrs. metric/imperial on (salt water)/off (fresh water) 2-12 sec. on / off SmartTRAK: selective on / off on / off 1.4 bar no reset on (salt water) 6 sec. on on on no reset ->40 ->40 ->40 ->40 ->40 ->41 ->41 ->41
The following settings may be changed with "set 2" (->42) or SmartTRAK: Alarm clock 0 - 23 h 59 min., on/off UTC zone 13 hrs., increments: 15 min. Time of day hours:minutes 24 or AM/PM setting 24 (off) / AM/PM (on) Date LCD contrast 1 (low) -12 (high) IrDA speed (not possible with SmartTRAK) low / high Sound on / off Show electronic ID 12:00, off GMT ->42 ->42 ->42 ->43 ->43 ->43 ->43 ->44 ->44

4 low on

4 Functions during the dive
4.1 Immersion If the water contacts are deactivated (->41): Switch on Aladin before immersion.
If you have chosen the option "Water contacts off" ("set 1" or SmartTRAK), Aladin will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.
After immersion, starting at a depth of about 0.8 m (3 ft), all diving functions are monitored, i.e. depth and dive time displayed, maximum depth stored, saturation of tissues calculated, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression procedure supervised. 4.2 TEC Setting bookmarks During the dive you can create bookmarks in your dive profile by pressing. The logbook icon appears for 4 seconds and an audible signal confirms the creation of the bookmark. These bookmarks will be graphically displayed in the dive profile of SmartTRAK. To visualize the bookmarks on the dive profile, the box "Generate bookmarks" under "Program options" in SmartTRAK must be selected. 4.3 Dive time Dive time

The whole time spent below a depth of 0.8m (3 feet) is displayed as dive time in minutes. The time above 0.8m (3 feet) is counted as dive time only if the diver descends again below 0.8m (3 feet) within 5 minutes. While the dive time is running, the colons on the right of the figures are 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. TEC Half time alarm (turn around alarm) If half of the set maximum dive time (->39) has elapsed, an audible signal goes off and flashes for 1 minute.
TEC Set dive time has elapsed An audible signal goes off and the dive time starts flashing.
4.4 Current depth / O2% mix Current depth is given in 10 cm increments (1 foot). At a diving depth of less than 0.8 m (3 ft) the display shows < >.
Current depth O2% mix Nitrogen loading bar > Time
The O2% mix is diplayed as long as CNS O2% = 0 and no ascent speed is indicated.
4.5 Maximum depth / Temperature Maximum depth is only displayed if it exceeds the current depth by more than 1 m (3 feet) (maximum indicator function). If maximum depth is not displayed, Aladin shows the temperature.
Maximum depth CNS O2% > Temp., O2 > Temp. , Time > Max. depth 4 sec
, O2 TEC Set maximum depth reached If the maximum depth set with SmartTRAK or "set 1" has been reached (default 40m/130 feet) and the depth alarm is turned on, the depth display will flash. Ascend until the depth stops flashing.

4.6 Ascent rate

Optimal ascent rate varies depending on depth between 7 and 20 m/min (23 and 67 ft/min). It is displayed as a percent of the reference variable ascent rate. 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. Aladin provides an audible alarm if the ascent rate is 110% or greater. The intensity of the alarm increases in direct proportion to the degree that the prescribed ascent rate is exceeded.

Ascent rate

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. In case of an improper ascent Aladin may require a decompression stop even within the no-stop phase because of the danger of microbubble formation. The decompression duration necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded. From great depth a slow ascent may cause heightened saturation of tissues and an extension of both decompression duration and total ascent time. At shallow depth, a slow ascent may shorten the decompression duration. Display of the ascent rate has the priority over <CNS O2>.

Decompression stop duration Decompression depth
Deco stop depths deeper than 27m (90 ft) are displayed as < : >
Ignored decompression alarm
The decompression alarm is activated if the , WARNING decompression stop is ignored. The arrow 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 , the decompression stop duration and decompression stop 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 (->14). 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 Aladin 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. Total time of ascent can be subject to change if the ascent rate is not ideal (100%). Ascent time greater than 99 minutes is displayed as < >.

Total ascent time

On all dives with Aladin, make a safety stop for at least three minutes at a depth of 5 m (15 feet).

4.11 Safety stop timer

The safety stop timer displays the time span a diver should spend at the safety stop depth at the end of the dive. The timer is activated by the diver and counts back from 3 minutes (default) to zero. It can be restarted any number of times. TEC The duration of the timer can be set between 1 and 5 minutes. The safety stop timer can be activated under the following conditions: Depth < 6.5 m (21 ft), no-stop display 99 min., gauge mode is switched off. Activate the safety stop timer by pressing. The timer begins to count backwards and a bookmark will be created in the dive profile. If you press again, the timer will start again from the full value. To visualize the safety stop bookmarks on the dive profile, the box "Generate safety stop markers" under "Program options" in SmartTRAK must be selected. The safety stop timer will switch off automatically if the depth exceeds 6.5 m (21 ft) or the no-stop phase is shorter than 99 minutes.

Safety stop icons Remaining Minutes time span Seconds
5 Functions at the surface

5.1 End of a dive

After reaching the surface (<0.8 m/3 ft) Aladin 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. The time of day is then displayed for 3 minutes, after which the computer turns off.
5.2 Residual nitrogen bar graph The segments in the residual nitrogen bar graph will gradually turn off as Aladin follows the offgassing of your tissues during your surface interval. There is a 1:1 equivalence in the meaning of the segments between diving and surface. Thus, on a repetitive dive the bar will resume from its status on the surface just prior to the dive. There are two exceptions however: the uppermost segment will stay lit until the desaturation time is completely extinguished. This is done to show that there is desaturation time left and that a dive started at this point will be logged as a repetitive dive. If the remaining desaturation time is very short, this segment could however at first disappear during the dive; during the 24 hours of an SOS-lock, all segments will stay on. 5.3 Desaturation time, No-fly time and Microbubble warning 5 minutes after a dive Aladin shows the time of day, the <do not fly time>, No-fly time the microbubble warning (if applicable), the current altitude range and the proDo not fly icon hibited altitude range (->27). Microbubble No-fly time is the time in hours that should pass before a flight and is diswarning played and adjusted until the value becomes 0 hours.
Flying while Aladin displays <do not fly> may lead to serious injury or death from decompression sickness. If the <microbubble warning (NO DIVE)> is visible during the surface interval, the diver should not undertake another dive.
Time of day Residual nitrogen bar Ascent to altitude range 4 prohibited
The duration of the microbubble warning is visible by entering the dive planner ->35. To check the elapsed surface interval press.
To check the remaining desaturation time and oxygen toxicity press.

Desaturation time

Oxygen toxicity Desaturation time is determined either by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time.
Through repetitive dives microbubbles accumulate in the lungs if the surface interval is not long enough. Ignoring decompression stops or ascending at an excessive rate can also lead to microbubbles in tissues. In order to reduce the risk of decompression sickness for repetitive dives, the surface interval should be planned long enough. If Aladin calculates that the formation of microbubbles occurs during the surface interval, it will advise a diver to extend the surface interval via the microbubble warning. If the dive is made in spite of the microbubble warning, the diver must cope with a clearly shorter no-stop time or an extension of decompression. Also, the duration of the microbubble warning at the end of the dive can increase considerably.

6 Diving in mountain lakes
6.1 Altimeter 6.2 Altitude ranges Altitude icon Altitude range 2
The altitude adjustment ->39 does not affect altitude ranges nor any calculations. Aladin measures the atmospheric pressure every 60 seconds even while the display is switched off. If the computer detects a sufficient increase in altitude, it switches on automatically and indicates the new altitude range (1-4) and the desaturation time. Desaturation time indicated at this moment refers to adaptation time at this altitude. If the dive starts within this adaptation time, Aladin treats it as a repetitive dive, since the body is offgassing. Altitude is divided into five ranges, which are influenced by barometric pressure. That is why the defined altitude ranges overlap on their fringes. If a mountain lake is reached, the altitude range is indicated at the surface (time of day display), in the logbook and in the dive planner by a stylised mountain and the current altitude range. Sea level to an altitude of approximately 1000m (3300 feet) is not indicated. In the following diagram, you Switching can see the approximate breakdown of the altitude at approx. No deco data ranges: 610 mbar
gauge mode 4000 m 13120 ft 3000 m 9840 ft 2000 m 6560 ft 8.85 psi
725 mbar 10.51 psi 815 mbar 11.82 psi 905 mbar 13.12 psi

Altitude ranges

1000 m 3280 ft 0m

6.3 Prohibited altitude

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

Max. altitude:

850 m 2790 ft

1650 m 5413 ft

2650 m 8694 ft

4000 m 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.
TEC If an ascent to a prohibited altitude is detected, an audible alarm goes off for 1 minute (patent pending). Descend to a lower altitude.
6.4 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).
Dive at altitude range 4: no deco data (autom. gauge mode)
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, the dive planner is not available anymore.

Timing Hours Minutes Seconds
* Each start (restart) of the stopwatch creates a bookmark.
After diving in gauge mode Aladin TEC shows the remaining time span during which it cannot be used in computer mode. Once the waiting period is over, the gauge mode can be switched off manually ->28.
The no-fly time after diving in gauge mode is 48 hours. Desaturation time will not be displayed. Remaining time during which Aladin cannot be used in computer mode
V TEC 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 Aladin TEC 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 Aladin 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. Aladin TEC 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, Aladin TEC displays depth and duration of the first level stop as well as the total time of ascent as soon as the MB nostop 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, Aladin TEC will change over to a lower MB level and the dive can not be completed with the initially chosen MB level. E.g. If a diver sets level L4 on Aladin TEC prior to the dive and during the dive ignores the stops recommended Aladin TEC will automatically adjust the setting to level L3 or lower. 1 Comparison of dives with MB level L0 and MB level L5 When two Aladin TEC 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.

Aladin displays further information about the selected dive.
Starting time O2 mix TEC MB level (at the beginning of the dive) Push to get more information about the dive.
VII UWATEC Aladin dive computers

Dive time Maximum depth

Lowest battery performance during the dive
Duration of surface interval (only with repetitive dives) CNS value at the end of 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.

Lowest temperature

Further possible information about the dive:
Too fast ascent* Ignored decompression stop*
Desaturation was reset before the dive (in "set 1") Desaturation was reset before the dive by removing the battery Battery quality factor has been 3 bars or less during the dive TEC Diving in gauge
DESAT Ignored decompression stop* TEC Diving in SOS mode (gauge mode) Altitude range TEC MB level dive (L1-L5) AVG
TEC Average depth (gauge mode) Microbubble warning after the dive *Alarms during the dive
TEC Ignored MB level stop*
gets you back to the dive list (first level screen within logbook). From here you can advance to the next dive of interest and press to retrieve more information about that dive etc.
Statistic information From the time of day display you can get the following statistic information over all dives. Push , and : Deepest dive

Number of dives

Leaving the logbook By pushing once or twice you can exit the logbook. The logbook closes automatically after 3 minutes without operation.

VIII Settings

1 TEC Altitude adjustment
The altitude adjustment does not affect altitude ranges nor any calculations. Adjust the altitude indication to your current altitude. 1. Starting from the time of day display push or until the mountain symbol and the altitude appear. 2. Confirm that you wish to change the displayed altitude by pushing. The altitude starts to flash. 3. Change the altitude in increments of 10 m / 50 feet by pushing or. 4. Confirm the selected altitude with.
2 Menu "set 1" Setting
With menu "set 1" or SmartTRAK you can configure the following items (dive functions): Range Default / Setting in Aladin PRIME Page

TEC Setting the backlight duration 1. Confirm that you wish to change the duration of the backlight illumination by pushing. The value starts to flash. 2. Change the duration with. (2-12 sec) 3. Confirm it with.
Switching the water contacts on and off On submerging in water the water contacts switch on Aladin automatically.
If you chose the option Water contacts off, Aladin will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.
1. Confirm that you wish to change the setting of the water contacts by pushing. "On" or "off" starts to flash. 2. Switch between "on" or "off" by pressing. 3. Confirm the setting with. Resetting the remaining saturation Diving after a reset of the remaining saturation WARNING may lead you into potentially hazardous situations which could result in death or serious injury. After a reset of the remaining saturation do not dive for at least 48 hours. If you dive after resetting the remaining saturation the computer will miscalculate your decompression, which may result in serious injury or death. Reset the remaining saturation only if you know you will not be diving, flying or going to higher altitude for the next 48 hours. Resetting the desaturation should only be done when there is a valid reason, e.g. loaning the computer to somebody who has not dived in 48 hours or more. When the computer itself has remaining saturation you must assume full responsibility for the consequences of resetting the remaining saturation.
. 1. Confirm that you wish to reset the displayed saturation by pushing "On" starts to flash. 2. Switch between "on" or "off" by pressing. 3. Confirm the setting with. If you have selected "off", "code" and "000" appear. Confirm with. 4. Set the first digit by pushing and Repeat point 4 for the next 2 digits. If you entered the right code the desaturation will be reset to zero (desat off) Code: 313
Switching the audible attention signals on and off With this option you can switch off the audible attention signals only (the audible alarms remain active). Refer to page 17 to see this distinction. 1. Confirm that you wish to change the setting of the audible attention signals by pushing. "On" or "off" starts to flash. 2. Switch between "on" or "off" by pressing. 3. Confirm the setting with.
3 Menu set 2 With menu "set 2" or SmartTRAK you can configure the following items: Setting Alarm clock UTC zone Time of day 24 or AM/PM setting Date LCD contrast IrDA speed Sound Show Aladin electronic ID Range 0 - 23 h 59 min., on/off 13 hrs., increments: 15 min. hours:minutes 24 (off) / AM/PM (on) 1 (low) -12 (high) low / high on / off Default 12:00, off GMT Page ->42 ->42 ->42 ->43 ->43 ->43 ->43 ->44 ->44

Decompression calculation depth range:
Maximum environment pressure: 13 bar (189 psi) Clock: Quartz clock, time, date, dive time display up to 199 minutes. Adjustable between 21%O2 (compressed air) and 50% O2 (TEC 21-100% O2) O2% Mix: Operating temperature: -10 to +50C (14F to 122F). CR2450, recommended brands: PANASONIC, DURACELL, RENATA, ENERGIZER, Power supply: SONY, VARTA. Life of the battery: 2-3years or 200-300 dives. Actual life of the battery depends on the quantity of dives per year, the use of the backlight and the length of the dives. In cold water the life of the battery is reduced. Not all CR2450 batteries are the same, and low quality batteries can have very short life.

2 Maintenance

Aladin is virtually maintenance free. All you need to do is to rinse it carefully with fresh water after each use and to have the batteries changed when needed ->45. To avoid possible problems with your Aladin, the following recommendations will help assure that it will give you years of trouble free service:
Avoid dropping or jarring your Aladin. Do not allow your Aladin to be exposed to direct, intense sunlight. Rinse your Aladin thoroughly with fresh water after each dive. Do not store your Aladin in a sealed container; make sure there is free ventilation. If there are problems with the water contacts, use soapy water to clean Aladin and dry it thoroughly. The surface of your Aladin housing can be treated with silicone grease. Do not apply grease to the water contacts! Do not clean Aladin with liquids containing solvent (apart from water). Check the battery capacity before each dive ->13. If the battery icon appears, replace the battery ->45. Diving with a weak battery: Aladin may stop working during the dive, service icon and error code "E3" or "E6" appear. Close the dive and replace the battery ->45. On the surface: if service icon and error code "E3" appear, replace the battery ->45. All error codes other than E3: Aladin must not be used for any further dives. Take your dive computer to an authorized SCUBAPRO UWATEC dealer.
2.1 Replacing the battery (Battery kit 06.201.919 includes battery and Teflon coated o-ring)
Removing the battery clears all physiological data including saturation. This means that for a repetitive dive the computer will not compute correctly. Diving after replacing the battery when there is desaturation time left on the computer can lead to serious injury or death from decompression sickness. Change the battery only under these conditions: After a dive if you know you will not be diving, flying or going to higher altitude for the next 48 hours. Before a dive if there is no desaturation time left on the computer. The change must be made with particular care in order to prevent water from seeping in. The warranty does not cover damages due to an improper replacement of the battery.

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4.05 UWATEC Aladin dive computers