All divers using dive computers to plan dives and indicate or determine decompression status must use their own computer. If the Aladin Air 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) 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 Aladin Air to use it to plan or control your diving. You MUST follow the ascent rates as indicated by the Aladin Air, and should the computer fail for any reason, you must ascend at a rate of no greater than 60 feet per minute. You MUST be familiar with all signs and symptoms of decompression sickness before using the Aladin Air! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms occur after a dive! There is a direct correlation between the efficacy 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 Air. Avoid situations of increased risk for decompression sickness which are marked with a warning sign in this operating manual. Never dive the Aladin Air to the limit. Neither the Aladin Air, nor any other diving computer or decompression table should be pushed to its limit. Give yourself a margin of safety by always leaving at least a few minutes in the no-stop box before making your ascent. Avoid repeated ascents and descents (yo-yo diving) while using the Aladin Air.
LIST OF CHAPTERS I II III IV V VI VII INTRODUCTION ALADIN AIR THE SYSTEM DIVING WITH ALADIN AIR DIVING AT REDUCED RISK WITH ALADIN AIR LOGBOOK DIVE PLANNER MEMOMOUSE AND DATATRAK/DATATALK 1 I 9 II 29 III 53 IV 63 V 69 VI 77 VII 81 VIII

VIII TROUBLE SHOOTING IX

APPENDIX, Maintenance, Technical Information, Warranty 85 IX

I INTRODUCTION

1 Aladin Air Diving as never before 2 Aladin Air Your Personal Companion 3 The Calculation Model ZH-L8 ADT ______________________________________ 2 ______________________________________ 3 3.1 Description _________________________ 5 3.2 Advantages ________________________ 7 ______________________________________ 8

Do not use the Aladin Air without a set of accepted diving tables with you as a back up decompression tool on every dive. Should decompression sickness occur, whether the Aladin Air was used correctly or not, a detailed history of the previous dives may be used to allow a better diagnosis and the most effective treatment for the diver.

II ALADIN AIR THE SYSTEM

1 Description 2 Setting Up _____________________________________ 10 2.1 Mounting the high-pressure hose ________ 12 2.2 Connecting the dive computer ___________ 13 2.3 Disconnecting the dive computer ________ 14 3.1 3.2 3.3 3.4 Switching on and off ___________________ Operating ____________________________ Operating scheme for surface functions ___ Operating modes ______________________ 17 22

3 Dive Computer

II Aladin Air The System

1 Description

The Aladin Air system consists of four units:
DO NOT FLY DIVEPLAN LOGBOOK
1 A high-pressure hose establishes the connection between the diving equipment and the dive computer and thereby ensures the measuring of the tank pressure. The hose is connected to the high pressure outlet of the regulator. The dive computer can be detached by means of a bayonet catch especially designed for this purpose and then used for the surface functions independently. The dive computer displays all important dive data. The bipartite display shows general dive- and decompression data in the upper part; data calculated on the basis of the measured tank pressure are displayed in the lower part.

DESATURATION

DECOSTOP

NO STOP

psi bar
3 The dive computer is equipped with a memory which stores dive data. The data can be temporarily stored in the storing extension MemoMouse and from there transferred to a MS-DOS personal computer. 4 The logbook software DataTrak manages the data of entered dives and offers a wide scope of graphical and statistical functions. By means of the control software DataTalk it is possible to alter basic settings of the dive computer (see page 78). MemoMouse and DataTrak/DataTalk 4 are available on the market as options.

2 Setting Up

2.1 Mounting the high-pressure hose The high-pressure hose ist mounted on the high-pressure outlet (HP-outlet) of the first stage of the regulator.

Adaptor

Mount the high-pressure hose on the HP-outlet. If the threadings do not match, you can optain an adaptor from your diving retailer.
Tighten the connection with a matching wrench.
2.2 Connecting the dive computer Make sure that the tank valve is closed and the regulator is depressurised. Place the bayonet ring of the high-pressure hose on the connecting part of the dive computer in such a manner that the guiding pins of the bayonet ring grip into the guides provided. Turn the bayonet ring to the right until it reaches the stop and than let loose the ring. Make sure that the bayonet ring leaps back a few millimeters. Check the correctness of the connection by forcefully pressing and pulling the hose. The bayonet ring must have a range of spring of a few millimeters.

B and
1 Aladin Air is in a state of rest; no information is displayed (> sleep-mode or > surface-sleepmode).

depth dive time depth

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

Ready-mode

Surface-mode

depth dive time

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 35). There is still a small reserve left at bAt 0%.
4a Selecting the logbook function: B and + Back: B and or automatically after three minutes.
4b Activating the logbook: B and E. Aladin Air shows the most recent dive.

max. depth deco info

4c Leaving the logbook: B and E or automatically after three minutes.

or after 3 minutes

5a Selecting the dive-plan function: B and. Back: B and + or automatically after three minutes.
5b Activating the dive-plan: B and E. Aladin Air 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

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

3.4 Operating modes

Aladin Air works in various operating modes: Sleep-mode: Activation: automatically When Aladin Air is not used, it is in the so called sleep-mode. In that case, the electronics are sleeping in that 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 Air 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.
Aladin Air switches into ready-mode afterwards. Once in ready-mode, the display is switched on and altitude sections are eventually displayed. If the dive computer is under pressure, the tank pressure is indicated in the lower display.
By touching contacts B and E in the ready-mode once more, Aladin Air will display the remaining battery capacity by percentage. Three minutes after activating the ready-mode, Aladin Air will fall back into the > sleep-mode.
Dive-mode: Activation: automatically at depth of about 2 ft. In dive-mode, all diving functions are monitored, i.e. depth and dive time displayed, maximum depth stored, saturation of tissues calculated depending on workload and temperature, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression procedure supervised.

2 Attention Messages and Alarms
3 Preparation for the Dive 4 Functions during the Dive
5 Functions at the Surface
6 Diving in Mountain Lakes
III Diving with Aladin Air
_____________________________________ 51

1 Terminology/Symbols

The information on the display of the Aladin Air varies depending on the kind of dive and the dive phase.
1.1 Display during no-stop phase No-stop phase: Dive time: Dive phase during which ascent is allowed without decompression stops. Time of the dive below depth of 4 ft.

no-stop phase

decompression range

D current depth A C

C 24min
maximum depth B D dive time

no-stop time

Decompression diving should not be attempted by recreational or sport scuba divers. Do not use the Aladin Air for intentional decompression diving.
1.2 Display during decompression phase RBT: (Remaining bottom time) time, for which the air supply is sufficient at the current depth, until ascent must be started. Decompression depth: Lowest stage is displayed. Decompression time: Prescribed duration of the decompression stop at the displayed decompression stage. Total ascent time to surface: Total ascent time including decompression stops. A (7min) total ascent time to surface depth dive time

no-stop range

C 10ft B
lowest decompression depth 2min decompression time decompression range

125 ft

D RBT (26min)

Remaining Bottom Time

Aladin Air draws the divers attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are always optical and acoustic under water, only optical at the surface except the decompression alarm. The acoustic attention messages (but not the alarms) can be switched off (see chapter VII page 78). 2.1 Attention messages Attention messages are communicated to the diver optically by lit up symbols, letters or flashing figures. In addition, two short acoustic sequences can be heard (in an interval of 4 seconds) in two different frequencies. Attention messages come up in the following situations: 4 sec Dive in mountain lake On a change of altitude, the altitude section (0 - 3) and adaptation time is shown. See page 51.

In extremely pure freshwater, it is possible that the Aladin Air will not automatically activate into the dive-mode.
4 Functions during the Dive
4.1 Dive time The whole time spent below a depth of 4 feet 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, dive time is continued at 0 minutes, because the display cannot show a larger figure.
4.2 Current depth Current depth is given in 4 inch-increments. On switching on and at a diving depth of less than 2 ft the void display <> appears.
depth dive time depth dive time
Depth measurement is based on freshwater. Therefore, Aladin Air shows a slightly greater depth than actually true when diving in salt water, depending on the salinity of the water.
4.3 Maximum depth Maximum depth is displayed if it is lower than the current depth (maximum indicator function). To prevent the display changing very frequently when diving in the vicinity of maximum depth, it is only displayed if it exceeds the current depth by more than three feet.
4.4 Ascent rate Optimal ascent rate varies depending on depth between 23 and 67 ft/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 Air 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 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. The Aladin Air may require a decompression stop even within the no-stop phase because of the danger of the formation of microbubbles due to an improper ascent. Decompression time necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded. At 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 decompression time because the tissues are desaturating during a shallow, slow ascent.

Messages:

Ascent rate Optical alarm

Acoustic alarm

Excessive ascent rates of longer periods are entered in the logbook. Response: Reduce ascent rate
4.5 Decompression information No-stop time is displayed, if no decompression stops are necessary. The arrow indicate no-stop time in minutes.

is visible. The figures

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

Response:

In order to prevent a decompression dive, you must ascend a few feet after this message.
It is dangerous and an unsafe diving practice to "push" the Aladin Air or any other decompression tool to its limits. Avoid no-stop times of less than three minutes at any given depth.

Decompression values

On entering the decompression phase, the arrow NO STOP disappears. The arrow DECOSTOP appears. Right beside the arrow, the deepest decompression stage in feet is displayed. Beside the decompression depth, the decompression time of the displayed stage in minutes appears. The display <30ft 3:> means that a decompression stop of 3 minutes at a depth of 30ft has to be made. When a decompression stop has been finished, the next higher decompression stop is displayed. When all decompression stops have been made, the arrow DECOSTOP extinguishes and the arrow NO STOP reappears. The indication of time on the lower right shows the no-stop time again. The decompression alarm is activated if the decompression stop is ignored. Arrow DECOSTOP begins flashing and an acoustic alarm is initiated. Due to the formation of microbubbles decompression can increase massively if a decompression stop is ignored. When the surface is reached during the decompression alarm, the arrow DECOSTOP continues flashing, in order to point to the risk of a decompression accident. The SOS-mode is activated after 3 minutes after the dive if corrective action is not taken. If the total (cumulative) duration of the decompression alarm is longer than a minute, it is entered in the logbook. Response: Descend to the prescribed decompression depth immediately!

Total time of ascent

As soon as decompression stops are necessary, Aladin Air 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 and a normal workload. Total time of ascent can be subject to change if the ascent rate is not ideal (100%) or with higher workload.

4.6 Tank pressure

Tank pressure is indicated in the lower display. The tank pressure displayed also serves the calculation of the Remaining bottom time (RBT) and the divers performance.

Message:

In case of increased air consumption, Aladin Air displays a lung symbol in the lower display and an acoustic alarm occurs. Response: In order to prevent additional saturation, reduce exertion and breathe more slowly.
4.7 Remaining bottom time RBT RBT is the time left at the current depth until the point of time when the ascent must be started. The RBT is shown in the lower display graphically by a stylized hour-glass as well as in figures (minutes). The RBT is calculated on the basis of the current tank pressure, the temperature, and the dive data so far registered. The RBT is based on the assumption that the tank pressure should amount to at least 580 psi at the end of the dive. Alterations of this are possible (see page 78).
depth dive time tank data

7min RBT 21min

Never allow the RBT to go below three minutes. If the RBT goes below three minutes there is a danger of insufficient air supply for the ascent as well as an increased risk of decompression sickness and serious injury or death may result!
Correct calculation of RBT when using a reserve or J-type valve is possible only if the reserve function of the valve is in the open (down) position during the dive. The acoustic alarm on exceeding the RBT is suppressed at depths less than 23 ft if Aladin Air is in the no-stop phase.
If RBT drops below three minutes, an acoustic caution signal is activated, the RBT-symbol appears and the RBT-figure starts blinking.
After the last minute (RBT=0) an acoustic alarm is given every 4 seconds. The RBT-figure and the RBT-symbol are blinking. Response: Start ascent immediately.

5.1 End of a dive

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

5.2 Desaturation time

When DESATURATION appears; the Aladin Air is in surface-mode. Desaturation time in hours and minutes is displayed next to that. Desaturation time is continually indicated until the next dive or until it reaches zero. The display is switched off to save energy three minutes after the last manipulation is made (surface-sleepmode).
In some cases, desaturation times with the Aladin Air are considerably longer than those of its predecessors. This is because the calculation model assumes reduced physical activity at the surface (therefore less nitrogen off gassing) and uses shorter half-times. If desaturation time reaches zero, the tissue models of the Aladin Air are desaturated and it switches into the sleep-mode.

5.3 No fly time

The waiting period until the next flight is indicated as follows: this indicator is the time in hours that should pass before a flight.

. Beside

Next to that display the time in hours until it is considered appropriate to fly is displayed (because of recalibrated desaturation time).
Flying while the Aladin Air displays DO NOT FLY may lead to serious injury or death from decompression sickness.

5.4 Warning of bubbles

Through repetitive dives microbubbles may accumulate in the lungs if the surface interval is not long enough. Ignoring decompression stops or an excessive ascent rate can also lead to bubbles in tissues. In order to reduce the risk of decompression sickness for future repetitive dives, the surface interval should be planned long enough to reduce the risk of decompression sickness. If Aladin Air calculates that the formation of microbubbles may occur during the surface interval, it will advise a diver to extend the surface interval. If the 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 avoids a higher 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 Air 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 Air 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 stylized mountains, if a mountain lake altitude is reached. Sea level to an altitude of approximately 3000 ft is not indicated. In the following, you can see the approximate altitude ranges of the four sections:

13120 ft 9840 ft Switching at approx. 8.85 psi Switching at approx. 10.51 psi Switching at approx. 11.81 psi Switching at approx. 13.12 psi

6560 ft

3280 ft
In order to assure optimal decompression even at higher altitudes, the 10 ft decompression stage is divided into a 13 ft stage and a 7 ft stage (the pescribed decompression depths are, in sequence, 7 ft, 13 ft, 20 ft, 30 ft).
Aladin Air can be used as decompression computer in case of an emergency up to an altitude of 13123 ft. If atmospheric pressure is below 8.99 psi (altitude higher than 13123 ft above sea level), no decompression information is displayed. Indication of the RBT is also impossible since decompression data are necessary for its calculation (tank pressure is still displayed, of course). Dive-planmode 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 information for the dive. Even the smallest differences in the pressure receptors 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 Air. But if an altitude section is displayed at sea level or the altitude read outs of two computers differ by more than one altitude section (e.g. section 2 instead of 0), there may be a defect of the computer. In this case, send your computer back to your retailer for checking. 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 AIR
1 Diving at Reduced Risk with Aladin Air 1.1 Diving at reduced risk __________________ 54 1.2 Minimizing risk on repetitive dives ________ 56 1.3 Response in increased risk situations ______ 57
IV Diving at Reduced Risk with Aladin Air
1 Diving at Reduced Risk with Aladin Air
1.1 Diving at reduced risk Analyzing the most recent results of decompression research and statistical analysis of diving accidents involving decompression sickness allows for the creation of guidelines for diving at reduced risk for decompression sickness. Aladin Air recognizes and reacts intelligently to certain risk situations. Of course, it is much better that each individual diver avoid these higher risk situations altogether. Yet if a decompression accident does occur, the optional MemoMouse and the DataTrak software allows the analysis of the dive profile and certain risk parameters to provide for more complete information for treatment purposes. The following are highly recommended suggestions for reducing the risk of decompression sickness.

There is a risk of decompression sickness on every dive even if all precautions described in this manual are taken.
Situation: The diver is physically exerting himself or herself, (e.g. swimming against the current). A shorter RBT or an extension of decompression time.

Reaction of computer:

Recommended response of the diver During the dive: Avoid further physical exertion if possible. Relax. Frequently check the RBT and decompression information on your Aladin Air. RBT may decrease considerably. Decompression time may increase considerably. After the dive: Refrain from heightened physical exertion on your next dive. Increase your surface interval.
Situation: 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 Air calculates a shorter no-stop time or decompression prescription to reduce the risk of decompression sickness.
Recommended response of the diver During the dive: Dive conservatively on all repetitive dives. Limit your maximum depth to no more than 75 feet at the very beginning of the dive, do not allow the RBT to go below three minutes, and make a very slow ascent. After the dive: Before the next dive, plan a sufficiently long surface interval (<Atn> display should disappear).

V LOGBOOK

1 Survey 2 Selection and Activation 3 Selection of Dive 4 Leaving the Logbook-Mode 5 Output on PC _____________________________________ 64 _____________________________________ 65 _____________________________________ 66 _____________________________________ 67 _____________________________________ 68

V Logbook

1 Survey
Aladin Air 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

dive number duration of surface interval (only with repetitive dives)
altitude sections if any maximum depth

RBT-alarm

air consumed during this dive dP = differential pressure
out of breath warning made during the dive
If a dive is started within adaptation time (after a change of altitude), the adaptation time is displayed instead of the surface interval.
2 Selection and Activation
1 The logbook is selected by bridging contacts B and + in ready- or surface-mode. Indication appears. If Aladin Air has been in surface-mode 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 (DIVE 1).

2 Selection and Activation from Ready-Mode
1 From ready-mode, you switch into the diveplan input stage with contacts B and. 2 The display shows. You return to ready-mode by B and +.
3 Contacts B and E afterwards activate the planning mode.
4 The display shows no-stop times for increasing depths (scrolling no-stop times, see page 73, 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 B and.

2 The display shows

. 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 Air 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 (page 73).
4b You can extend the interval with contacts B and +. B and shorten the interval.
You confirm the new surface interval and get into nostop planning (page 73).
4 Planning a No-Stop Dive
After confirming the surface interval (if possible), no-stop times are displayed in 10-ft-increments. The process starts with the plan depth of the no-stop time which must be shorter than 99 minutes. The no-stop time for every 10-ft-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 an ascent and/or disregarding decompression instructions can lead to microbubbles. By calculating the formation of bubbles, Aladin Air 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 nostop times, the diver should plan an extension of the interval if possible.
By repeated recallings of the diveplan with varying surface intervals the minimum interval can be determined.
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.
Marking a repetitive dive when <Atn> is displayed will increase your risk of serious injury or death from decompression sickness!

5 Planning a Decompression Dive
Planned decompression dives violate the responsible diving practice standards of every major diving WARNING organization. They are not to be attempted by recreational or sport scuba divers. Only professional divers with extensive experience, training an the appropriate equipment for decompression diving (including the presence of an on board recompression chamber) should attempt to plan a decompression dive! 1 In order to plan a dive that requires decompression, wait until the scrolling nostop time shows the desired depth. 2 By means of contacts B and E you can switch into decompression planning. Dive time is now one minute longer than no-stop time, and the appertaining decompression information appears. 3 <Add> demands that you set the time. This is done with contacts B and +, B and respectively. As soon as the contacts are no longer bridged, Aladin Air calculates the decompression information for this set time. This calculation takes some time. If you wish to plan a dive requiring decompression at another depth, switch from decompression planning to no-stop planning by means of B and E. Aladin Air again shows the scrolling no-stop times. Now you can switch between no-stop planning and decompression planning at will with contacts B and E.
6 Leaving the Dive-Plan-Mode
If the contacts B and E are touched for about 3 seconds, Aladin Air falls back into ready- or surface-mode. This also occurs three minutes after the activation of the diveplan-mode.
On a short touch of contacts B and E the Aladin Air switches back to the scrolling no-stop times. In order to completely leave the diveplan-mode, B and E must be continually bridged until two acoustic bleeps have occured.
If two or more divers using computers are planning a dive, planning for all divers has to be based on the dive computer showing the shortest no-stop times. Failure to do this may lead to serious injury or death from decompression sickness.
VII MEMOMOUSE AND DATATRAK/DATATALK
1 Communication between dive computer and personal computer 1.1 Personal programming of the dive computer ____________________________ 78 1.2 Analysis and storage of real dives ________ 79
VII MemoMouse and DataTrak/DataTalk
1 Communication between dive computer and personal computer

IX Appendix

1 Maintenance of Aladin Air Dive Computer
Your Aladin Air 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. To avoid possible problems with your Aladin Air, the following recommendations will help assure that it will give you years of trouble free service: Avoid dropping or jarring your Aladin Air. Do not allow your Aladin Air to be exposed to direct, intense sunlight. Rinse your Aladin Air thoroughly with fresh water after each dive. Do not store your Aladin Air in an air-tight area; make sure there is free ventilation. If there are problems with operating the contacts, the surface of your Aladin Air housing can be treated with silicone grease. Use soapy water to clean the Aladin Air before using silicone grease and dry it thoroughly.
There are borings in two of the contacts for the reception of the plug of the connecting cable to MemoMouse and personal computer. 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 manufacturer or the importer. The computer is checked for its technical functioning at the same time. Do not attempt to have the batteries changed by anyone other than an authorized dealer.

2 Technical Information

Operating altitude: with decompression information: sea level up to approx. 13300 ft without decompression information: unlimited no limitation in the permitted range of diving with compressed air quartz timer, display up to 199 minutes

Operating depth: Clock:

Operating temperature: 14 F to 122 F 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 Live (years) 7 5,2,5
3 Conversion of Tank Pressure
Tank pressure indicated in the lower display may diverge from the information given by a manometer/depth gauge. Aladin Air displays pressure always converted to a temperature of 68 F, whereas the mechanical depth gauge displays the actual pressure influenced by temperature.

psi 3770 3480

Display depth gauge
The figure on the right allows you to compare the information given by a conventional depth gauge and by Aladin Air at six different temperatures.
95o F 86o F 68o F 50o F 41o F 32o F

psi Display Aladin Air

4 Warranty
Please pay attention to the following remarks on warranty claims: 4.1 Recognition of warranty 4.2 Scope of the The warranty only covers dive computers which have been provably bought from an authorized retailer or from the manufacturer. The manufacturer will repair all defects which are provably retraceable to defects of material or faults in production. The warranty covers the repair of the dive computer free of charge, the replacement of faulty parts or the entire dive computer, respectively. UWATEC reserves the right to determine the merits of a warranty claim and to determine whether the computer will be repaired or replaced. Excluded are faults or defects due to: excessive wear and tear exterior influences, e.g. transport damage, damage due to bumping and hitting, influences of weather 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 for the dive computer pressure tests which do not take place in water diving accidents

THE SYSTEM

OPERATING MANUAL

Active Light

English

SWISS MADE BY UWATEC AG

Operating scheme
Operating scheme for surface functions

B and E

B and +

B and

Sleep Surface Sleep

Input stage

DIVEPLAN

(or 3min)

Ready or Surface

LOGBOOK

automatically

(or 3s

(or 3m in)

Battery capacity

depth depth

dive time dive time

NO STOP

max. depth

tank data

deco info

Uwatec Aladin Air Z
Important remarks concerning signal words and symbols
This operating manual makes use of the following icons to indicate especially important comments: Remarks: Informations and tips which are important for optimal use of the functions of your Aladin Air Z.

Attention!

Information which draws your attention to situations and special features important for your diving comfort and the early avoidance of risk situations.

Danger!

Alarms which indicate risk situations and dangers. Ignoring these warnings can lead to situations involving danger to life and limb. These alarms must be obeyed!
The following symbols are used in the operating manual: Flashing display
Acoustic alarm signal -+E B Operating instruction for manual input Example: bridging contacts B and E
January 2000, Copyright by Uwatec Switzerland Uwatec Aladin Air Z

Safety considerations

You must carefully read this entire manual before using your Aladin Air Z. Diving has many inherent risks. Decompression sickness is among the most serious of those 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 or some other inherent risk of scuba diving. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use the Aladin Air Z! The Aladin Air Z is a sophisticated dive computer to assist a trained and certified diver in making decisions concerning dive planning and execution. As with any tool, the Aladin Air Z may be misused if the following safety and operational precautions are not strictly followed. If they are followed, careful use of the Aladin Air Z can increase your diving enjoyment and reduce your risk of decompression sickness. If they are not, you will be placing yourself at serious risk for decompression sickness. While the Aladin Air Z is a technically advanced tool based on a mathematical model of decompression sickness, neither it nor any other diving computer (or table) can exactly monitor the physiological changes that occur in your body as you dive. In addition, each diver will vary in his or her susceptibility to decompression sickness and each diver will vary in his or her susceptibility to decompression sickness. In addition to this, each individual divers own susceptibility may vary from day to day. Combined with the fact that decompression modelling is an inexact science, and must be based to some extend on certain unproven assumptions, it is emphasis on you, the individual diver, to dive responsibly and to carefully follow all standard safe diving practices as well as the recommendations contained in this manual. Guidelines for the use of Aladin Air Z: The following guidelines for using Aladin Air Z are derived from the latest medical research for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness will not occur. The Aladin Air Z is designed for dives made with compressed air only. Do not use the Aladin Air Z for dives made with nitrox or other mixed gases. Due to the danger of nitrogen narcosis do not dive deeper than 40 m. Aladin Air Z does not warn you in this respect. On all dives with the Aladin Air Z, 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 successive dive make sure that the deepest portion of that dive is done at the beginning of the dive. If your diving cylinder is equipped with a reserve or J-type valve, make certain that the reserve is in an open (down) position. Failure to keep the reserve open will result in the improper calculation of dive data depending on tank pressure. 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. Repetitive dives after exchanging the dive computer: Wait at least 24 hour before you start with the repetitive dive. If the Aladin Air Z 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. Always observe the optical and acouctic alarm signals of the Aladin Air Z. Avoid situations of increased risk for decompression sickness which are marked with a warning sign in this operating manual. You MUST follow the ascent rates as indicated by the Aladin Air Z and if the computer should fail for any reason, you must ascend at a rate of no greater than 10 metres per minute. You MUST be familiar with all signs and symptoms of decompression sickness before using the Aladin Air Z! 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. Ensure that you have enough Air for the Ascent. Do not use the RBT to the limit if prolonged ascents or an increased rate of breathing (currents) are expected. See also page 54-55 and 84.
Aladin Air Z The Diving System

Transmitter (Option)

MemoMouse and logbook software DataTrak (Option)
Dive Computer Aladin Air Z
Screen Guard (Optional: Several colours)

List of chapters

I 3 Aladin Air Z Introduction ___________9 Aladin Air Z More Safety in Diving ____10 Aladin Air Z Your Personal Companion_10 The Calculation Model ZH-L8 ADT _________ 3.1 Description _______________________12 3.2 Advantages _______________________13 Safety in Diving _______________________14 Aladin Air Z The System ___________15 Description 1.1 System hardware __________________16 1.2 Safety of transmission ______________17 Transmitter 2.1 Operating modes and functions______18 Dive Computer 3.1 Operating ________________________19 Active backlight ___________________20 3.2 Operating modes __________________25 Setting Up (Transmitter and Dive Computer) 4.1 Mounting of the transmitter_________29 4.2 Pairing of transmitter and dive computer ____________________31 2.3 Alarm low battery _________________Preparation for the Dive ________________Functions during the Dive 4.1 Dive time_________________________40 4.2 Dive depth _______________________40 4.3 Maximum depth___________________40 4.4 Ascent rate _______________________41 4.5 Decompression information _________43 4.6 Tank pressure (only with transmitter)__45 4.7 Remaining bottom time RBT_________Surface Functions 5.1 End of a dive _____________________48 5.2 Desaturation time _________________48 5.3 No fly time _______________________49 5.4 Warning of bubbles ________________Diving in Mountain Lakes _______________50 IV Diving at Low Risk with Aladin Air Z ________________________Diving at Low Risk with Aladin Air Z 1.1 Dive at low risk____________________54 1.2 Minimizing risks on first dives _______54 1.3 Minimizing risks on repetitive dives ___55 1.4 Action in risk situations _____________56 V 5 Logbook ____________________________59 Survey _______________________________60 Selection and Activation________________61 Selection of Dive ______________________62 Leaving Logbook-Mode ________________63 Output on PC ________________________64

II Aladin Air Z The System
1 Description 1.1 1.2 2.1 3.1 3.Setting Up (Transmitter and Dive Computer)
System hardware __________________________16 Safety of transmission ______________________17 Operating modes and functions ______________18 Operating_________________________________19 Active backlight ___________________________20 Operating modes __________________________25
Transmitter Dive Computer

4.1 4.2

Mounting of the transmitter _________________29 Pairing of transmitter and dive computer ______31

II Uwatec Aladin Air Z

1 Description
1.1 System hardware The Aladin Air Z system consists of three units: 1 The transmitter is installed at the high pressure outlet of the regulator. It measures tank pressure and radio-transmits the results to the dive computer, where they are also used for the calculation of air consumption and dive data. 2 The dive computer displays only the important dive data. The 2 part display shows general dive- and decompression data in the upper part; data calculated on the basis of the measured tank pressure are displayed in the lower part. 3 The dive computer has a data memory which stores the dive data. The data can be downloaded out into a MemoMouse from where they can be transmitted to a Windows personal computer with the logbook program DataTrak. MemoMouse and DataTrak are available as an option. It is possible to use Aladin Air Z as a conventional dive computer. In this case calculations depending on air data are not possible and the lower part of the display does not show air data.

dive time

1.2 Safety of transmission Data transmission from transmitter to receiver is supported by various levels of safety in order to ensure continuous and reliable reception: 1.Each transmitter works with an allocated address. This address is communicated to the dive computer on pairing. There are more than 60,000 addresses. This assures that no two transmitters send on the same channel. The pairing of transmitter and receiver is also carried out by a process with various safety levels in order to prevent faulty pairing. 2.Data are transmitted with an average interval of 5 seconds. The exact point in time of the transmission is variable. This prevents two transmitters from disturbing each other for longer periods. 3.Together with the pressure data additional informations are transmitted. This allows reconstruction of faulty data and, on the other hand, where this is no longer possible, recognition of useless data.

Contact B: Base contact, which has to be touched for all operations. Contact E: 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. + / contacts: They serve to select the logbook and dive-plan as well as to set values (time, depth, dive-number etc.).

3 Operating

Active backlight The display of the Aladin Air Z can be illuminated both on the surface and underwater. The backlight can be switched on by pressing the unit above the display. The light will turn off automatically after 7 seconds. The backlight can only be activated if the computer display is on. 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.

3 Dive Computer

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. Aladin Air Z is in a state of rest; no information is displayed (>sleep-mode or >surface-sleep-mode).
2. Bridging B and E activates the computer >readymode or >surface-mode.

depth dive time depth

DO NOT FLY

DESATURATION

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. There is still a small reserve left at bAt 0%.

Ready-mode

Surface-mode

depth dive time

4a Selecting the logbook function: B and + Cancel: B and or automatically after three minutes without operation
4b Activating the logbook: B and E. Aladin Air Z shows the most recent dive.
4c Leaving the logbook: B and E or automatically after three minutes without operation.

5.In order to confirm the pairing the B- and E- contacts have to be bridged. A bleep confirms the input and <PAIr> is displayed permanently. The computer and transmitter must remain in physical contact until the confirmation has been done. 10 s
6.Tank pressure is displayed after approximately 10 seconds.
7.In case of faulty pairing, the display <FAIL> appears instead of <PAIr>. In that case, completely depressurise the regulator and repeat the pairing procedure. This is only possible after at least 15 seconds.
Pairing of transmitter and dive computer remains valid until a new pairing procedure is carried out. Pairing of transmitter and dive computer can therefore be carried out at home and need only be executed once, before the first use. A new pairing procedure is always necessary when a new transmitter or a new dive computer is used and after changing the battery. Tank pressure shown in the lower part of the display of the dive computer should be checked prior to every dive.
III Diving with Aladin Air Z
1 Terminology/Symbols 1.1 1.2 2.1 2.2 2.3
Display during no-stop phase ________________34 Display during decompression phase __________35 Attention messages ________________________36 Alarms ___________________________________37 Alarm low battery__________________________38 _________________________________________38 4.1 4.2 4.3 4.4 4.5 4.6 4.7 5.1 5.2 5.3 5.4 Dive time _________________________________40 Dive depth ________________________________40 Maximum depth ___________________________40 Ascent rate _______________________________41 Decompression information _________________43 Tank pressure (only with transmitter) __________45 Remaining bottom time RBT _________________46 End of a dive ______________________________48 Desaturation time __________________________48 No fly time________________________________49 Warning of bubbles ________________________49 _________________________________________50
2 Attention Messages and Alarms
3 Preparation for the Dive 4 Functions during the Dive

5 Surface Functions

6 Diving in Mountain Lakes

III Uwatec Aladin Air Z

In case of increased air consumption, Aladin Air Z displays a lung symbol in the lower display and an acoustic alarm occurs.
To prevent super-saturation, reduce exertion and breathe more quietly.
Interruption of transmission: If no data are received, the display of Aladin Air Z shows the interruption of the transmission (antenna warning, alarm signal) 30 seconds after the last transmission. Without a sensible transmission in the following 40 seconds <---> appears instead of the tank pressure and the RBT (remaining bottom time) is no longer displayed (alarm signal). In this case, either transmitter or receiver do not work properly or the position of dive computer and transmitter is very disadvantageous. As soon as data are transmitted again, the computer restarts to display tank pressure and RBT.
4.7 Remaining bottom time RBT (only with transmitter) RBT is the time left at the current depth until the point of time when the ascent must be started. The RBT is shown in the lower display in figures (minutes). The RBT is calculated on the basis of the current tank pressure, the temperature and the dive data so far registered. The RBT is based on the assumption that the tank pressure should amount to at least 40 bar at the end of the dive. Alterations are possible (see page 74).

decompression range

no-stop time

7min RBT 21min

Ensure that you have enough Air for the Ascent. Do not use the RBT to the limit if prolonged ascents or an increased rate of breathing (currents) are expected.
The RBT must never reach <0:> (alarm signal), because a minimal reserve pressure at the surface would not be guaranteed. Danger of insufficient air supply for the ascent!
Correct calculation of the RBT is only possible if the valve of any reserve function is open during the dive.
The acoustic alarm on exceeding the RBT is suppressed at depths less than 7 m if Aladin Air Z is in the no-stop phase.
Messages: If the RBT drops below three minutes, an acoustic attention signal is activated and the RBT (only figures) starts flashing.
When the last minute has passed (RBT=0) an acoustic alarm is activated every 4 seconds. The RBT is flashing.

Procedure:

Start ascent at once.

5.1 End of a dive

After reaching the surface, Aladin Air Z 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 Air Z switches into surface-mode. In surface-mode, Aladin Air Z shows desaturation time and no fly time.

5.2 Desaturation time

Aladin Air Z is in surface-mode. The arrow DESATURATION appears; beside it 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 (surfacesleep-mode). Desaturation calculations continue to be made in the background.

The entire altitude range is divided into four sections which are influenced by meteorological circumstances. That is why the following altitude sections overlap on their fringes. The altitude section is indicated at the surface, in the logbook and in the dive planner by stylized mountains, if a mountain lake altitude is reached. Section 0 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 also at higher altitudes, the 3 m decompression stage is divided into a 4 m stage and a 2 m stage (the prescribed decompression depths are in consequence 2 m, 4 m, 6 m, 9 m.).
Aladin Air Z can be used as decompression computer up to an altitude of 4000 m. If atmospheric pressure is below 620 mbar (higher altitude than 4000 m above sea level), no decompression information is displayed any more. The indication of the RBT is also impossible, since decompression data are necessary for its calculation (tank pressure is still displayed, of course). Diveplan-mode can no longer be started, since no decompression information is available. Beside the display of the altitude section 3, <HI> (=high) appears to tell the diver that he will not get any decompression information for the dive. 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 safety of Aladin Air Z. But if an altitude section is displayed at sea level or the altitude informations of two computers differ by more than one altitude section (e.g. section 2 instead of 0), there may be a defect of the computer. In this case, send your computer back to your retailer for checking.
Diving at Low Risk with Aladin Air Z
Diving at Low Risk with Aladin Air Z 1.1 1.2 1.3 1.4
Dive at low risk ____________________________54 Minimizing risks on first dives ________________54 Minimizing risks on repetitive dives ___________55 Action in risk situations _____________________56

IV Uwatec Aladin Air Z

1 Diving at Low Risk with Aladin Air Z
1.1 Dive at low risk Aladin Air Z 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: Neither the Aladin Air Z 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. 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: Due to the danger of nitrogen narcosis do not dive deeper than 40 m. Aladin Air Z does not warn you in this respect. On all dives with the Aladin Air Z, 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 successive dive make sure that the deepest portion of that dive is done at the beginning of the dive. The Aladin Air Z is designed for dives made with compressed air only. Do not use the Aladin Air Z for dives made with nitrox or other mixed gases. If your diving cylinder is equipped with a reserve or J-type valve, make certain that the reserve is in an open (down) position. Failure to keep the reserve open will result in the improper calculation of dive data depending on tank pressure. 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.

VI Dive Planer

Survey Selection and Activation from Ready-Mode Selection and Activation from Surface-Mode Planning a No-Stop Dive Planning a Decompression Dive Leaving the Dive-Plan-Mode
_________________________________________66 _________________________________________66 _________________________________________67 _________________________________________68 _________________________________________70 _________________________________________71

VI Uwatec Aladin Air Z

1 Survey / 2 Selection and Activation from Ready-Mode
The Aladin Air Z is equipped with a dive planner which allows the planning of no-stop and decompression dives with freely determinable surface intervals. The water temperature of the most recent dive and altitude sections are incorporated in the calculation.
Presetting the surface interval (only during desaturation)
Planning of no-stop dives
Planning of decompression dives
2 Selection and Activation from Ready-Mode
max. depth max. depth deco info max. depth deco info
1. From ready-mode, you switch into the dive-plan input stage with contacts B and.
2. The display shows <DIVEPLAN>. You return to ready-mode by B and +.
3. Contacts B and E afterwards activate the planning mode.
4. The display shows no-stop times for increasing depths (scrolling no-stop times).
3 Selection and Activation from Surface-Mode
1. From surface-mode, you switch into the dive-plan input stage by B and.
2. The display shows <DIVEPLAN>. 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 Air Z expects your input for the duration of the dive interval.
4 Planning a No-Stop Dive
Aladin Air Z 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. 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 nostop time is for the first time less than 99 minutes. The no-stop time for every 3-metre-increment is displayed for about 3 seconds (scrolling no-stop times). The Aladin Air Za 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 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. 2.By means of contacts B and E you can switch into decompression planning. Dive time is now one minute longer than no-stop time, and the appropriate decompression information appears. 3.<Add> demands that you set the time. This is done with contacts B and +, B and respectively. As soon as the contacts are no longer bridged, Aladin Air Z calculates the decompression information for this set time. This calculation takes some time. If you wish to plan a dive requiring decompression at another depth, switch from decompression planning to no-stop planning by means of B and E. Aladin Air Z again shows the scrolling no-stop times. Now you can switch between no-stop planning and decompression planning at will with contacts B and E.
6 Leaving the Dive-Plan-Mode
If the contacts B and E are touched for about 3 seconds, Aladin Air Z returns to ready- or surface-mode. This also occurs three minutes after the activation of the dive-plan-mode.

3s or after 3 minutes

On a short touch of contacts B and E the Aladin Air Z switches back to the scrolling no-stop times. In order to completely leave the dive-plan-mode, B and E must be bridged for a longer period and 2 bleeps have to be awaited.
If two or more divers plan a dive, planning has to be based on the dive computer that shows the shorter no-stop times or the longer decompression times.
VII Communication Software for Windows
1 MemoMouse, DataTrak and DataTalk 1.1 1.2 1.3
Personal programming of the dive computer (DataTalk) ___________________ 74 Analysis and storage of real dives (DataTrak) ___________________________ 74 Updates (DataTrak, DataTalk) ________________ 74

VII Uwatec Aladin Air Z

1 MemoMouse, DataTrak and DataTalk
The Aladin Air Z is able to communicate with a personal computer. The connection is established by contact sensors and the MemoMouse. The MemoMouse and the PC software DataTrak and DataTalk is available as an option. For the Aladin Air Z it is only allowed to use DataTalk version 1.6 or higher. Communication with a personal computer (Windows) has a number of advantages: 1.1 Personal programming of the dive computer (DataTalk) Several parameters can be set individually by the user, e.g.: The physical units of water depth and tank pressure can be selected (Metric/Imperial). The calculation of Remaining Bottom Time (RBT) assumes a remaining tank pressure at the surface. This remaining pressure can be adjusted from 30 to 100 bar. The acoustic alarm can be switched off for attention messages. Actual alarms are not changed (not enough air, ignoring decompression stop, too rapid ascent). The sensitivity of the message out of breath can be altered. If you switch off the acoustic attention buzzer of the Aladin Air Z you must pay careful attention to the visual signals on the face of the Aladin Air Z. Failure to follow all alarms whether audible or not may lead to serious injury or death due to decompression sickness, and/or drowning. 1.2 Analysis and storage of real dives The last approx. 200 minutes of dive time are stored by the dive computer in increments of 20 seconds and can be transferred to the PC. The DataTrak software allows the representation and analysis of the profiles. By this means all relevant data are examined and displayed for every point in time. The DataTrak releases 1.6 and higher recognize the Aladin Air Z and display the respective data. The PC program enables the diver to keep a personal logbook. Apart from the last 200 minutes of diving, 37 dives are recorded in the logbook of Aladin Air Z. If the data from Aladin Air Z are transferred regularly into the MemoMouse and then to the PC, all dives will be stored in the PC with their profiles.Time and date of the dives are automatically recorded and the dives can be printed out on a page for the divers logbook. 1.3 Updates The last versions of DataTrak and DataTalk are available for free from the Internet (http://www.uwatec.com).

VIII Trouble Shooting

1 Trouble Shooting
________________________________________ 76

VIII Uwatec Aladin Air Z

symptom No reception of tank pressure data. possible reason(s) Transmitter and computer are not tuned to each other (paired). Transmitter or receiver in the computer are defective. procedure(s) Pair transmitter and computer (see chapter II 4). If the pairing is not possible with another transmitter, the receiver in the computer is defective. Have transmitter or dive computer repaired. Change the pressure by breathing from the regulator. Tank data will reappear. Mount transmitter correctly (see chapter II 4) If the pairing is not possible with another transmitter, the receiver in the computer is defective. Have transmitter or dive computer repaired. Make comparison at 20 C or check the tank pressure compensated to the atmospheric pressure for comparison (see appendix, chapter IX).
In surface mode if there is no decrease in pressure for 3 minutes the pressure data will not display. Bad reception of tank pressure data. Transmitter is not mounted correctly. Transmitter, or receiver in the computer are defective.
Displayed tank pressure does not correspond to pressure measured by a manometer (pressure gauge).
By compensating the temperature, the pressure displayed is valid at 20 C. If air- or water-temperature differ from this value, a difference to the value given by a pressure gauge is possible. Tank and transmitter do not have the same temperature (only possible in air). Manometer/pressure gauge is not accurate (temperature 20 C).
Leave the tank with the regulator mounted in the open air for 5 -10 minutes. Measure tank pressure with another manometer/pressure gauge (at 20 C).
symptom The logbook does not show any air consumption (dp) for a certain dive. Altitude section does not correspond to the current altitude. possible reason(s) No tank pressure signal was received at the beginning or end of the dive. Transmitter and dive computer were not paired before the dive started. Atmospheric pressure is especially high or low. Air pressure measured by the computer is wrong. procedure(s) Mount transmitter correctly (see chapter II 4). Pair transmitter and computer (see chapter II 4).
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. Too rapid ascent or ignoring decompression stops have caused a large number of microbubbles, which leads to an attention message (warning of bubbles).

<Atn> appears

Plan sufficiently long surface interval and dives at lower risk. Study chapters III 5 and IV very carefully.
An unexpected decompression stop appears in place of no-stop time or decompression increases in leaps.
symptom Attention messages are not given acoustically. Remaining bottom time (RBT) always very short. possible reason(s) The acoustic signal of the attention messages is switched off. Remaining pressure is set too high (standard setting 40 bar). procedure(s) Reactivate these attention messages by means of the interface. Alter the remaining pressure setting by means of the interface. Always open reserve valve when using Aladin Air Z.

IX Appendix

Maintenance Technical Information Conversion of Tank Pressure Warranty 4.1 4.2 4.Serial No. / Dealer address
_________________________________________80 _________________________________________81 _________________________________________82 _________________________________________83 Recognition of warranty ____________________83 Scope of the warranty ______________________83 Warranty period and claim __________________83 ________________________________________ 86

IX Uwatec Aladin Air Z

1 Maintenance of Aladin Air Z Dive Computer
Your Aladin Air Z 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. To avoid possible problems with your Aladin Air Z, the following recommendations will help assure that it will give you years of trouble free service: Avoid dropping or jarring your Aladin Air Z. Do not allow your Aladin Air Z to be exposed to direct, intense sunlight. Rinse your Aladin Air Z thoroughly with fresh water after each dive. Do not store your Aladin Air Z in an gas mixture-tight area; make sure there is free ventilation. If there are problems with operating the contacts, the surface of your Aladin Air Z housing can be treated with silicone grease. Use soapy water to clean the Aladin Air Z before using silicone grease and dry it thoroughly. Never pressure the Aladin Air Z out of water. There are borings in two of the contacts for the reception of the PC interface connection (MemoMouse). Free these borings from dirt with a needle if necessary.

Take the dive computer or the transmitter to an authorized Uwatec dealer in order to change the batteries. The actual change of the batteries is made at the manufacturer or the importer. The computer is checked for its technical functioning at the same time. Do not attempt to have the batteries changed by anyone other than an authorized dealer.

2 Technical Information

Operating altitude: with decompression information: without decompression information:
sea level up to approx. 4000 m unlimited

Operating depth:

no limitation in the permitted range of diving with compressed air no limit for recreational dives. Do not dive deeper than 40 m.
Maximum operating pressure: 13 bar Clock: Power supply: Life of the battery: quartz timer, display up to 199 minutes Special battery Uwatec LR07 (standard values) For an average diving time of 60 minutes and a surface interval of 20 hours after every dive: Number of dives per year dive computer (years) 7 5.2.5 transmitter (years) 11 9.6 Operating temperature: -10C to +50C
3 Conversion of Tank Pressure
Tank pressure indicated in the lower display may diverge from the information given by a manometer/pressure gauge. Aladin Air Z displays pressure always converted to a temperature of 20 C, whereas the mechanical pressure gauge displays the actual pressure influenced by temperature. The figure on the right allows you to compare the information given by a conventional pressure gauge and by Aladin Air Z at six different temperatures.
Display pressure gauge 150
35o C 30o C 20o C 10o C 5o C 0o C

230 bar

Display Aladin Air Z

4 Warranty

Please pay attention to the following remarks on warranty claims: 4.1 Recognition of warranty: 4.2 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 both the transmitter and the dive computer. Pressure tests which do not take place in water Diving accidents