User manual SCUBAPRO-UWATEC ALADIN TEC2G

User manual Bedienungsanleitung Manuel d'utilisation Manuale d'uso Instrucciones para el uso Handleiding Aladin TEC 2G Nederlands Español Italiano Français Deutsch English Safety considerations You must carefully read and understand this entire manual before using your Aladin TEC 2G. 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 TEC 2G. Guidelines for the use of Aladin TEC G: The following guidelines for using Aladin TEC 2G 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 TEC 2G is designed for dives with compressed air (21% O2) and Nitrox (22 to 100% O2) only. Do not use Aladin TEC 2G 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 TEC 2G with open circuit breathing systems. · Only use Aladin TEC 2G for diving with an independent breathing apparatus. Aladin TEC 2G 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 TEC 2G has a ppO2 warning. The default limit is set at 1.4bar ppO2 max. 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 TEC 2G 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 TEC 2G fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 feet) 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 TEC 2G does not substitute for a dive buddy. · Only make dives that are appropriate to your level of dive training. Aladin TEC 2G 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 TEC 2G Safety considerations · 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 TEC 2G! 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 47, or battery replacement, see page 51) 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. NO I Altitude and diving · Do not dive at altitudes higher than 4000m (13000ft). · After a dive do not rise to altitudes that Aladin TEC 2G prohibits via the flashing altitude range number (see page 29). Flying after diving · After diving, wait at least 24 hours prior to flying. Aladin TEC 2G dive instrument is a personal protective equipment in compliance with the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified the conformity with the European Standard EN 13319:2000. EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope. I UWATEC Aladin TEC 2G English Introduction Congratulations on purchasing Aladin TEC 2G and welcome to UWATEC. From now on you will enjoy the assistance of the most extraordinary dive computer - equipped with UWATEC's most innovative technology - while diving. Aladin TEC 2G enables you to use two different gas mixtures during the same dive. However, for an easy reading this manual mainly refers to dives with a single gas mixture. Information for diving with two gas mixtures is marked with or has been summarised in special chapters. We thank you for choosing Aladin TEC 2G and we hope you will enjoy safe dives in the future! Further information on UWATEC dive computers and other products by UWATEC can be found on our web page at www.scubapro-uwatec.com. To make this manual easier to read we will use the term "Aladin" as an abbreviation for "UWATEC Aladin TEC 2G diving computer" throughout this booklet. Safety considerations Dive computers provide divers with data; they, however, do not provide the knowledge how this data should be understood and applied. Dive computers cannot replace common sense! You must therefore carefully read and understand this entire manual before using your Aladin. Important remarks concerning signal words and symbols This operating manual makes use of the following icons to indicate especially important comments: Remarks Danger! Information and tips which are important for optimal use of the functions of Aladin. WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. The following symbols are used in the operating manual: Flashing display Audible signals 4s Audible attention signal Audible alarm signal Alternate displays By pushing during the dive you can scroll through alternate displays. How to get back to the first display: · scrolling with through the displays · after 5 seconds: automatically if marked with · after 5 seconds: directly by pushing 1x E.g. Max depth Temperature, Time > Temperature > > Max depth -> Page reference e.g. ->10 Valid only for dives with 2 gas mixtures Instructions for manual input Press left push button Press and hold (1 second) left push button Press right push button Press and hold (1 second) right push button Press and hold (1 second) both push buttons Time out after 5 seconds without operation. Display switches back to original indication. I UWATEC Aladin TEC 2G Copyright© by UWATEC Switzerland Quick reference Time of day / Date Decompression depth / Level stop depth Setting icon Desaturation time (DESAT) Service icon Duration of no-dive warning Duration of surface interval Current depth Altitude sections Date icon Decompression stop obligation / Ignored decompression stop Decompression stop indicator Level stop indicator Decompression stop duration Level stop duration MB level icon (input / MB level reduced) O2 mix icon (input) Max depth Temperature MB level Maximum Operating Depth (MOD) Average depth Dive number DEPTH NO I Do not fly icon No-dive warning Dive time / No-fly time / SOS duration Repetitive dive number Battery icon No-stop indicator Ascent time icon No-stop time / Total ascent time MB no-stop time Partial pressure of oxygen ppO2 Alarm clock icon / Infrared icon Nitrogen loading bar (dive) Residual Nitrogen bar (surface) Desaturation Battery condition O2 mix Oxygen toxicity CNS O2% Ascent rate Icon for stopwatch and safety stop timer AM/PM icon Desaturation icon DIVE TIME NO AMPM DESAT DECO STOP STOP NO STOP CNS O2% S L O W Too fast ascent Average depth icon Gauge icon Logbook icon Dive planner icon AMPM DESAT Operating scheme "->" means "more information at page" Off · (Desat. time CNS O2% · Date · Battery condition ) ->14 ->15 ->15 Time of day display Gas 1 O% ->20 Gas d O% ->37 MB Level L0-L ->32 Gauge mode on / off ->30 Altitude ->29 (adjustment ->45) Set ->48 Set 1 ->45 Dive planner ->41 Logbook ->43 / · Depth alarm · Dive time alarm ->45 ->46 ->46 ->46 ->46 ->46 ->46 / / Enter Scroll / Change setting Backlight Exit · Alarm clock · UTC time zone · Time of day · 24h / AM PM · Date · Display contrast · IrDA speed ->48 ->48 ->48 ->49 ->49 ->49 ->49 ->50 ->50 · Safety stop duration · ppO2 max · Reset to air · Deco gas on/off · Unit system · Salt / fresh water ->46 · Backlight duration ->47 · Attention beep on /off · Water contacts on /off ->47 ->47 Without operation the display switches automatically back to the time of day display and after 3 minutes the display switches off. I UWATEC Aladin TEC 2G · Sound on / off · Electronic ID · Reset desaturation ->47 See also page 14. English Operating scheme Display switched off Gas d O% Gas 1 O% Logbook Diveplanner Page1 + Oxygen ­ concentration + Oxygen ­ concentration Max depth Dateof thedive DEPTH DIVE TIME Divetime Battery performance O2mix ( + Surface ­ interval ) (MB-)No-stoptime NO STOP No-stop dive DEPTH DIVE TIME S L O W + ppO2max ­ + ppO2max ­ + Dive ­ number Confirmation Confirmation Page2 Altitude range(if>0) Minimum temperature Page3 SOSif applicable (MBlevel) CNS O2% Repetitive divenumber Starting time CNSO2% attheend + Depth ­ Decompression dive + ­ Bottom time DEPTH DIVE TIME NO Surface interval ifapplicable O2mixdecogas(ifused) Exit DECO STOP CNS O2% Exit Aftertheoldestdive: Statistic information Deepest dive Number of dives DEPTH DIVE TIME S L O W Longest dive Cumulative bottomtime I UWATEC Aladin TEC 2G List of chapters I Safety considerations Introduction Important remarks concerning signal words and symbols Quick reference / Operating scheme List of chapters System and operation System description Operation 2.1 Push buttons 2.2 Water contacts 2.3 SmartTRAK 2.4 Switching on the display 2.5 How to navigate Aladin at the surface 2.6 Checking the desaturation time 2.7 Checking the surface interval 2.8 Displaying the date 2.9 Checking the battery condition 2.10 Active backlight 2.11 Switching off the display 2.12 Alarm clock SOS mode I ___________________________________ ___________________________________ II 1 2 ___________________________________ 9 ___________________________________ 9 ___________________________________ 9 ___________________________________ 9 __________________________________ 10 __________________________________ 10 __________________________________ 13 __________________________________ 14 __________________________________ 14 __________________________________ 14 __________________________________ 15 __________________________________ 15 __________________________________ 15 __________________________________ 16 __________________________________ 16 __________________________________ 16 3 III Diving with Aladin __________________________________ 1 1 Terminology / Symbols __________________________________ 17 1.1 General terminology / Display during no-stop phase __________________________________ 17 1.2 Display during decompression phase __________________________________ 17 __________________________________ 18 1.3 Nitrox information (O2 information) 2 Attention messages and alarms 2.1 Attention messages 2.2 Alarms Preparation for the dive 3.1 Setting the gas mixture and ppO2 max 3.2 Setting the MB level 3.3 Preparation for diving with two mixtures 3.4 Preparation for the dive and function check Functions during the dive 4.1 Immersion 4.2 Setting bookmarks 4.3 Dive time 4.4 Current depth / O2% mix 4.5 Max depth / Temperature 4.6 Ascent rate 4.7 Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD) 4.8 Oxygen toxicity (CNS O2%) 4.9 Nitrogen loading bar graph 4.10 Decompression information 4.11 Safety stop timer Functions at the surface 5.1 End of a dive __________________________________ 19 __________________________________ 19 __________________________________ 19 __________________________________ 20 __________________________________ 20 __________________________________ 21 __________________________________ 21 __________________________________ 21 __________________________________ 22 __________________________________ 22 __________________________________ 22 __________________________________ 22 __________________________________ 22 __________________________________ 23 __________________________________ 24 __________________________________ 25 __________________________________ 25 __________________________________ 26 __________________________________ 26 __________________________________ 27 __________________________________ 27 __________________________________ 27 3 4 5 I UWATEC Aladin TEC 2G English ___________________________________ ___________________________________ ___________________________________ List of chapters 5.2 Residual nitrogen bar graph 5.3 Desaturation time, No-fly time and No-dive warning 6 Diving in mountain lakes 6.1 Altimeter 6.2 Altitude ranges 6.3 Prohibited altitude 6.4 Decompression dives in mountain lakes __________________________________ 28 __________________________________ 28 __________________________________ 29 __________________________________ 29 __________________________________ 29 __________________________________ 29 __________________________________ 29 __________________________________ 0 __________________________________ __________________________________ 32 __________________________________ 33 __________________________________ 33 __________________________________ 33 __________________________________ 34 __________________________________ 34 __________________________________ 34 __________________________________ 34 __________________________________ 35 __________________________________ 35 __________________________________ 36 __________________________________ 36 __________________________________ __________________________________ 1 __________________________________ 41 __________________________________ 42 __________________________________ 42 __________________________________ __________________________________ 43 __________________________________ 43 __________________________________ __________________________________ 45 __________________________________ 45 __________________________________ 48 __________________________________ 1 __________________________________ 51 __________________________________ 51 __________________________________ 51 __________________________________ 53 __________________________________ 53 IV Gauge mode V 1 2 Diving with microbubble (MB) levels Comparison of dives with MB level L0 and MB level L5 Terminology 2.1 Display during MB no-stop phase 2.2 Display during level stop phase Preparation for a dive with MB levels 3.1 Setting the MB level Functions during the dive with MB levels 4.1 Level stop information 4.2 Total time of ascent 4.3 Decompression obligation 4.4 Level stop and deco stop Complete a dive with MB levels 3 4 5 VI Diving with two gas mixtures VII 1 2 3 Dive planner Planning a no-stop dive Planning a decompression dive Leaving the dive planner VIII Logbook 1 Survey 2 Operation IX 1 2 3 X 1 2 3 4 Settings Altitude adjustment Menu "set 1" Menu "set 2" Appendix Technical information Maintenance 2.1 Replacing the battery Warranty Index I UWATEC Aladin TEC 2G II System and operation 1 System description II AladinTEC2G SmartTRAK Infraredport InfraredInterface (option) Operation On page 5 and 14 you will find an operating schematic. .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 · Operate the backlight · Exit the current function or menu and switch to the time of day display · Switch off Aladin Under water: · · · · Access alternate displays Set bookmark Operate the backlight Activate the safety stop timer (dive mode only, in depths < 6.5m / 20ft) PushButtons WaterContacts Gauge mode (stopwatch): · Restart Diving with two mixtures: · Initiate switch to gas D or gas 1 · Interrupt switching process · Confirm switch to gas D or gas 1 II UWATEC Aladin TEC 2G 9 English 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 Operation . Water contacts On submerging in water the water contacts switch on Aladin automatically. If you have chosen the option "Water contacts off" ("set 1", ->47), 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. WARNING . 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 window 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. 10 II UWATEC Aladin TEC 2G 2 Operation The following settings may be changed with SmartTRAK or via "set 1" or "set 2" directly on Aladin: Setting · · · · · · · · · · · · · · · · · · · · Depth alarm Dive time alarm Safety stop duration Maximum partial pressure of oxygen (ppO2 max) Time limit to reset the O2% mix to air Deco gas Unit system Water type Backlight illumination duration Audible attention signals Water contacts Reset desaturation Gauge mode Alarm clock UTC (Universal Time Change) zone Time of day 24 or AM/PM setting Date Display contrast Sound Range 5 - 100m (20 - 330ft) on/off 5-195min, on/off 1-5min 1.2-1.6bar no reset / 1 - 48hrs on/off metric/imperial on (salt water)/off (fresh water) 2-12s ; push on / push off on / off (SmartTRAK: selective) on / off 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 40m (130ft),off 60min, off 3 minutes 1.4bar no reset off on (salt water) 6s on on no reset off 12:00, off II Page 45 46 46 46 46 46 46 46 47 47 47 47 30 48 48 48 49 49 49 50 4 on 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 Bookmarks Average depth Battery condition Downloading your dives Aladin's 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 Aladin's 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. II UWATEC Aladin TEC 2G 11 English 2 Operation Dive window Dive information panel Dive computer display Tissue panel Physiology panel Dive profile panel Alarm symbols Notes panel Dive table 1 II UWATEC Aladin TEC 2G 2 Operation DEPTH DIVE TIME NO II . 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. CNS O2% 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. NO DECO STOP STOP S L O W Timeofdaydisplay 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 (->29). 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 ->29. * Only if the option "Water contacts on" ("set 1", ->47) is chosen. See warning ->10. II UWATEC Aladin TEC 2G 1 English AMPM DESAT NO STOP 2 Operation . How to navigate Aladin at the surface Starting from the time of day display you can enter into different menus. Off · (Desat. time CNS O2% · Date · Battery condition ) ->14 ->15 ->15 Time of day display Gas 1 O% ->20 Gas d O% ->37 MB Level L0-L ->32 Gauge mode on / off ->30 Altitude ->29 (adjustment ->45) Set ->48 Set 1 ->45 Dive planner ->41 Logbook ->43 · Enter with · With display. into the function or sub menu. you can switch to the time of day / · Alarm clock · UTC time zone ->48 ->48 ->48 ->49 ->49 ->49 ->49 ->50 ->50 / · Depth alarm · Dive time alarm · Safety stop duration · ppO2 max · Reset to air · Deco gas on/off · Unit system ->45 ->46 ->46 ->46 ->46 ->46 ->46 · After 3 minutes without operation Aladin returns to the time of day display. · Time of day · 24h / AM PM · Date · Display contrast · IrDA speed · Sound on / off · Electronic ID · Salt / fresh water ->46 · Backlight duration ->47 · Attention beep on /off · Water contacts on /off ->47 ->47 · Reset desaturation ->47 . Checking the desaturation time No-flytime Donotflyicon NO NO DESAT No-dive warning CNS O2% S L O W 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 5 seconds without operation. * Only displayed if there is a remaining saturation due to the last dive or change of altitude. Residual nitrogen bar Desaturationtime Oxygentoxicity WARNING For the calculations of the desaturation and no-fly time it is assumed that the diver breathes air while on the surface. . 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. Surfaceinterval 1 II UWATEC Aladin TEC 2G 2 Operation . Displaying the date II 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 operation. Date .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). NO 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 ->51. Batterycondition/ performance WARNING · If the bar graph shows 2 segments, the battery symbol will blink, on the surface and in dive 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! ->51 WARNING Bargraph 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. .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. The default duration is 6 seconds. The duration can be changed in "set 1" (->47) or with SmartTRAK between 2 and 12 seconds. It can also be set to "push on / push off", in which case the light stays on until you turn it off by pressing again. The backlight can only be activated if the computer display is on. Repeated activation of the backlight will reduce battery life. II UWATEC Aladin TEC 2G 1 English 2 Operation / 3 SOS mode Keeping the backlight permanently on represents a severe strain on the battery. In warm waters (20 °C/68 °F and above), a new battery can sustain 20-40 1-hour dives with the backlight always on. In cold waters (4 °C/40 °F and below) the low battery warning may come on within the first dive. For temperatures between 4 °C/40 °F and 20 °C/68 °F the life of a new battery will be somewhere between 1 and 20 1-hour dives. Aladin monitors the battery level throughout every dive, and if the available energy drops below the warning threshold, Aladin will automatically disable the backlight to prevent a computer shut down. .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. .1 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: ->48 ("set 2") SOS mode Timeremaininguntil SOSmodeswitches offautomatically NO Activation: automatic If the diver remains above a depth of 0.8m (3ft) for more than three minutes without observing a prescribed decompression stop, the computer will automatically switch into SOS mode after the dive. Push to see the "SOS" sign and the remaining length of the SOS mode. The dive will be entered in the logbook with "SOS". The SOS mode will be unlocked after 24 hours. While in SOS mode, the computer cannot be used for diving. The computer can however be used in gauge mode ->30. All segments in the nitrogen loading bar will flash throughout the dive. Diving within 48 hours after the end of an SOS mode will result in shorter no stop times or longer decompression stops. NO DESAT WARNING · Serious injury or death may result if a diver does not seek immediate treatment should any signs 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. 1 II UWATEC Aladin TEC 2G III Diving with Aladin 1 Terminology / Symbols III 1.1 General terminology / Display during no-stop phase Current depth In metres (feet) DEPTH DIVE TIME No-stop phase Dive time Duration of the dive (min) Depth Dive phase during which surfacing is allowed without stop. Decompression phase Dive phase during which surfacing is allowed only after decompression stops are completed. NO STOP CNS O2% Nitrogen loading bar Time Max depth Max depth reached during the dive Oxygen toxicity CNS O2% Ascent rate (Only while ascending) No-stop time Remaining time at a given depth during which ascent is allowed without decompression stop (min). Current depth 24min 26.2m Max depth 37min dive time % No-stop time Elapsed bottom time (Max depth >) Temperature > Temperature , O2 mix and time of day > (Max depth)... 1.2 Display during decompression phase Decompression stop All required decompression stops must be observed. DEPTH NO Total ascent time to surface (7min) Time Depth 3m 6m Deepest decompression stop depth DIVE TIME DECO STOP CNS O2% 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). III UWATEC Aladin TEC 2G 35.7m No-stop range Decompression range Total ascent time Including decompression stops in minutes. 17 English The information on the display of Aladin varies depending on the kind of dive and the dive phase. For information about diving with microbubble (MB) levels see chapter V ->32. Specific features of "Diving with two gas mixtures", are described in chapter VI ->37. 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 max 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 100% 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 ppO2 max is reached is called Maximum Operating Depth (MOD). When you enter the settings for the gas mixture, Aladin will display the ppO2 max 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 ->25. · Default setting of ppO2 max is 1.4bar. The value of ppO2 max can be set by means of SmartTRAK or with "set 1" between 1.2 and 1.6bar (->46). 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 ppO2 max 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. ppO2 max 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 WARNING Nitrox diving may only be attempted by experienced divers after proper training from an internationally recognized agency. 18 III UWATEC Aladin TEC 2G 2 Attention messages and alarms III Aladin draws the diver's attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are visual and / or audible. WARNING 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. WARNING 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 / ppO2 max is reached 25 · Set max depth is reached 23 · Oxygen toxicity reaches 75% 25 · No-stop time less than 3 minutes 26 · Prohibited altitude (surface mode) 29 · Entering decompression (when diving with L0) 26 · Half of set dive time is reached 22 · Set dive time is reached 22 · Depth for tank switch has been reached 40 Diving with MB levels (L1-L5): · MB no-stop time = 0 · MB level stop ignored · MB level reduced · Entering decompression when diving with MB level L1-L5 34 35 35 35 An alarm occurs in the following situations (more information can be found on the listed pages): Page · Oxygen toxicity reaches 100% · Ignored decompression · Exceeding the prescribed ascent rate (Particular scale of beeps, ->24) · Altitude alarm · Low battery alarm (without audible alarm): the battery icon appears if the battery has to be replaced. 25 27 24 29 51 III UWATEC Aladin TEC 2G 19 English · The audible attention messages can be switched off in "set 1" ->47 or SmartTRAK. With SmartTRAK they can be switched off selectively. · In addition, the sound can be turned off completely in "set 2" ->50. 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 ppO2 max WARNING 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. For dives with two gas mixtures please read page 37 for further reference. To set the gas mixture, Aladin must be in user mode (time of day display). or until ppO2max 1. Push or until the GAS 1 O2 menu appears. . 2. Confirm that you wish to change the oxygen fraction of gas 1 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 (ppO2 max) and the MOD. 4. Confirm the selected percentage with . Max Operating Depth MOD Change the O2% mix by (+) and (­) 5. By pushing or you can change the ppO2 max for the chosen fraction of oxygen down to 1.0bar. Aladin will now display the corresponding MOD for the new ppO2 max. 6. Confirm your ppO2 max settings with . Change the ppO2 max by (+) and (­) · 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" ->46 or SmartTRAK between 1 and 48 hours or to "no reset" (default). 20 III UWATEC Aladin TEC 2G