ALADIN ALADIN TEC 2G User manual

scubapro-uwatec.com
Aladin TEC 2G
PN 06.202.543 5.06
UWATEC AG, Riedstrasse 368
CH-5705 Hallwil, Switzerland
Deutsch EnglishItalianoNederlands Español Français
User manual
Bedienungsanleitung
Manuel d’utilisation
Manuale d’uso
Instrucciones para el uso
Handleiding

2
Safety considerations
I UWATEC Aladin TEC 2G
You must carefully read and understand this entire manual before using your Aladin TEC 2G .
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 2G:
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 comput-
ers. 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%O
2
) and Nitrox (22 to 100%O
2
) 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%O
2
. 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 ppO
2
warning. The default limit is set at 1.4bar ppO
2
max. It can be changed
between 1.2 and 1.6bar.
• Frequently check the "oxygen clock" (CNS O
2
). Ascend and finish the dive if the CNS O
2
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 surfac-
ing 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).
WARNING

English
3
I UWATEC Aladin TEC 2G
• 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 symp-
toms 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 O
2
% status has dropped below 40%.
• When diving with Nitrox, make sure your surface interval is long enough (just like diving with com-
pressed 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
NO
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.
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 dis-
played by equipment covered by this standard is explicitly excluded from its scope.
Safety considerations I

4
Introduction
I UWATEC Aladin TEC 2G
The following symbols are used in the operating manual:
This operating manual makes use of the following icons to indicate especially important comments:
Remarks Information and tips which are important for optimal use of the functions of
Aladin.
Danger!
Instructions for manual input
Flashing display
Audible attention signal
Audible signals
Copyright©by UWATEC Switzerland
4s Audible alarm signal
-> Page reference e.g. ->10
Important remarks concerning signal words and symbols
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 technol-
ogy - 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.
Press left push button
Press and hold (1 second)
left push button
Press and hold (1 second)
both push buttons
Press right push
button
Press and hold
(1 second)
right push button
Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
WARNING
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 >
Temperature, Time > Max depth
Time out after 5 seconds without operation.
Display switches back to original indication.
Valid only for dives
with 2 gas mixtures

English
5
Quick reference
I UWATEC Aladin TEC 2G
• Alarm clock ->48
• UTC time zone ->48
• Time of day ->48
• 24h / AM PM ->49
• Date ->49
• Display contrast ->49
• Sound on / off ->50
• Electronic ID ->50
• IrDA speed ->49
/
• Dive time alarm ->46
• Safety stop
duration ->46
• Salt / fresh water ->46
• Backlight duration ->47
• Depth alarm ->45
• Reset to air ->46
• ppO2max ->46
• Unit system ->46
• Deco gas on/off ->46
• Attention beep
on /off ->47
• Water contacts
on /off ->47
• Reset desaturation ->47
/
Time of day display
Gas 1
O2%
->20
Altitude ->29
(adjustment
->45)
Gauge mode
on / off
->30
Gas d
O2%
->37
Dive
planner
->41
Logbook
->43
Set 2
->48
Set 1
->45
• Date
• (Desat. time CNS O2% )
• Battery condition
->14
->15
->15
Off
MB Level
L0-L5
->32
STOP
STOP
S
L
O
W
NO
NO
DECO
CNS O
2
%
DEPTH
NO STOP
DIVE TIME
DESAT
DESAT
AMPM
AMPM
Dive planner icon
MB level icon
(input / MB level reduced)
O2mix icon (input)
Current depth
Altitude sections
Too fast
ascent
Max depth
Temperature
MB level
Maximum Operating
Depth (MOD)
Average depth
Dive number
Setting icon
Service icon
Date icon
AM/PM icon
Desaturation icon
Do not fly icon
Dive time / No-fly time /
SOS duration
Repetitive dive number
No-stop time / Total ascent time
MB no-stop time
Time of day / Date
Decompression depth / Level stop depth
Desaturation time (DESAT)
Duration of no-dive warning
Duration of surface interval
Partial pressure of oxygen ppO2
Ascent time icon
No-stop indicator
Level stop indicator
Decompression stop
obligation / Ignored
decompression stop
Decompression stop
indicator
Gauge icon
Icon for stopwatch and safety stop timer
No-dive warning
O2mix
Oxygen toxicity CNS O2%
Ascent rate
Alarm clock icon / Infrared icon
Battery icon
Nitrogen loading bar (dive)
Residual Nitrogen bar (surface)
Desaturation
Battery condition
Logbook
icon Average
depth
icon
Decompression stop duration
Level stop duration
Without operation the display switches automati-
cally back to the time of day display and after
3 minutes the display switches off. See also page 14.
Operating scheme
"->" means "more information at page"
I
Enter
/ Scroll / Change setting
Backlight
Exit

Operating scheme
6I UWATEC Aladin TEC 2G
(MB level)
S
L
O
W
DEPTH DIVE TIME
LogbookGas 1 O2% Diveplanner
Surface
interval
Display switched off
Statistic information
Deepest
dive
Longest
dive
Cumulative
bottom time
Number
of dives
DEPTH
NO STOP
DEPTH DIVE TIME
Bottom
time
(MB-) No-stop time
No-stop dive
Decompression dive
STOP
NO
DECO
CNS O
2
%
DEPTH DIVE TIME
Oxygen
concentration
+
–
ppO2max
+
–
( )
Exit
Confirmation
Exit
After the oldest dive:
+
–
Depth
+
–
+
–
Repetitive
dive number
Starting
time
Surface
interval
if applicable
CNS O2%
at the end
Minimum
temperature
Altitude
range (if>0)
SOS if
applicable
CNS O
2
%
Dive
number
O2mix
Dive time
Date of
the dive
Battery
performance
Max
depth
+
–
S
L
O
W
DEPTH DIVE TIME
Page 3
Page 2
Page 1
Gas d O2%
Oxygen
concentration
+
–
ppO2max
+
–
Confirmation
O2mix deco gas (if used)

English
7
I UWATEC Aladin TEC 2G
I Safety considerations ___________________________________ 2
Introduction ___________________________________ 4
Important remarks concerning signal words
and symbols ___________________________________ 4
Quick reference / Operating scheme ___________________________________ 5
List of chapters ___________________________________ 7
II System and operation ___________________________________ 9
1 System description ___________________________________ 9
2 Operation ___________________________________ 9
2.1 Push buttons ___________________________________ 9
2.2 Water contacts __________________________________10
2.3 SmartTRAK __________________________________10
2.4 Switching on the display __________________________________13
2.5 How to navigate Aladin at the surface __________________________________14
2.6 Checking the desaturation time __________________________________14
2.7 Checking the surface interval __________________________________14
2.8 Displaying the date __________________________________15
2.9 Checking the battery condition __________________________________15
2.10 Active backlight __________________________________15
2.11 Switching off the display __________________________________16
2.12 Alarm clock __________________________________16
3 SOS mode __________________________________16
III Diving with Aladin __________________________________ 17
1 Terminology / Symbols __________________________________17
1.1 General terminology / Display during no-stop phase __________________________________17
1.2 Display during decompression phase __________________________________17
1.3 Nitrox information ( O2 information) __________________________________18
2 Attention messages and alarms __________________________________19
2.1 Attention messages __________________________________19
2.2 Alarms __________________________________19
3 Preparation for the dive __________________________________20
3.1 Setting the gas mixture and pp O2 max __________________________________20
3.2 Setting the MB level __________________________________21
3.3 Preparation for diving with two mixtures __________________________________21
3.4 Preparation for the dive and function check __________________________________21
4 Functions during the dive __________________________________22
4.1 Immersion __________________________________22
4.2 Setting bookmarks __________________________________22
4.3 Dive time __________________________________22
4.4 Current depth / O2 % mix __________________________________22
4.5 Max depth / Temperature __________________________________23
4.6 Ascent rate __________________________________24
4.7 Partial pressure of oxygen (pp
O2 max) /
Maximum Operating Depth (MOD) __________________________________25
4.8 Oxygen toxicity (CNS O2 %) __________________________________25
4.9 Nitrogen loading bar graph __________________________________26
4.10 Decompression information __________________________________26
4.11 Safety stop timer __________________________________27
5 Functions at the surface __________________________________27
5.1 End of a dive __________________________________27
List of chapters I

8I UWATEC Aladin TEC 2G
List of chapters
5.2 Residual nitrogen bar graph __________________________________28
5.3 Desaturation time, No-fly time and
No-dive warning __________________________________28
6 Diving in mountain lakes __________________________________29
6.1 Altimeter __________________________________29
6.2 Altitude ranges __________________________________29
6.3 Prohibited altitude __________________________________29
6.4 Decompression dives in mountain lakes __________________________________29
IV Gauge mode __________________________________ 30
V Diving with microbubble (MB) levels __________________________________ 32
1 Comparison of dives with MB level L0 and MB level L5 __________________________________32
2 Terminology __________________________________33
2.1 Display during MB no-stop phase __________________________________33
2.2 Display during level stop phase __________________________________33
3 Preparation for a dive with MB levels __________________________________34
3.1 Setting the MB level __________________________________34
4 Functions during the dive with MB levels __________________________________34
4.1 Level stop information __________________________________34
4.2 Total time of ascent __________________________________35
4.3 Decompression obligation __________________________________35
4.4 Level stop and deco stop __________________________________36
5 Complete a dive with MB levels __________________________________36
VI Diving with two gas mixtures __________________________________ 37
VII Dive planner __________________________________ 41
1 Planning a no-stop dive __________________________________41
2 Planning a decompression dive __________________________________42
3 Leaving the dive planner __________________________________ 42
VIII Logbook __________________________________ 43
1 Survey __________________________________43
2 Operation __________________________________43
IX Settings __________________________________ 45
1 Altitude adjustment __________________________________45
2 Menu " set 1 " __________________________________45
3 Menu
" set 2 " __________________________________48
X Appendix __________________________________ 51
1 Technical information __________________________________51
2 Maintenance __________________________________51
2.1 Replacing the battery __________________________________51
3 Warranty __________________________________53
4 Index __________________________________53

English
9
II UWATEC Aladin TEC 2G
II System and operation
1 System description
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
On page 5 and 14 you will find an operating schematic.
2.1 Push buttons
Aladin can be operated with two push buttons ( ). Operation of the push but-
tons 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)
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
Infrared port
Push Buttons
Water Contacts
II
SmartTRAK
Aladin TEC 2G
Infrared Interface
(option)

10 II UWATEC Aladin TEC 2G
2 Operation
2.2 Water contacts
On submerging in water the water contacts switch on Aladin automatically .
If you have chosen the option " Water contacts off " ( " set 1 " , ->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.
2.3 SmartTRAK
With SmartTRAK you can configure Aladin, transfer dive data to a personal
computer and graphically display the data. To start the communication, turn on
Aladin and place it so that its infrared 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:
WARNING
When making any changes to the settings via SmartTRAK, you must press the
"Write" icon for the changes to take effect.

English
11
II UWATEC Aladin TEC 2G
2 Operation II
Setting
• Depth alarm
• Dive time alarm
• Safety stop duration
• Maximum partial pressure of
oxygen (ppO2max)
• 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
4
on
Page
45
46
46
46
46
46
46
46
47
47
47
47
30
48
48
48
49
49
49
50
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
The following settings may be changed with SmartTRAK or via " set 1 " or " set 2 " directly on Aladin :
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 identify-
ing 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.

Dive window
Dive information
panel
Dive profile
panel
Alarm
symbols
Notes panel
Dive
computer
display
Tissue
panel
Physiology
panel
Dive table
2 Operation
II UWATEC Aladin TEC 2G
12

English
2.4 Switching on the display
• automatically, on submerging in water* or when adaptation to atmospheric
pressure is necessary;
• manually, by pushing or . If switched on with all segments
light up for 5 seconds.
Afterwards the display shows the time of the day, the O2mix and the tempera-
ture.
This display is called time of day display. Most navigation descrip-
tions start from this display. At the surface Aladin returns automati-
cally to this display.
If there is a remaining saturation from the last dive or from a change of altitude,
Aladin also displays the "do not fly" time, the "do not fly" icon, the current
altitude range and the prohibited altitude range (->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.
STOP
STOP

S
L
O
W
NO
NO
DECO
CNS O
2
%
DEPTH
NO STOP
DIVE TIME
DESATAMPM

Time of day display
2 Operation II
II UWATEC Aladin TEC 2G 13

14 II UWATEC Aladin TEC 2G
2.7 Checking the surface interval
From the time of day display you can check the surface interval by pushing
(logbook menu) .
The surface interval is the time since the end of the last dive and is displayed
as long as there is remaining saturation.
2.6 Checking the desaturation time
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.
For the calculations of the desaturation and no-fly
time it is assumed that the diver breathes air while
on the surface.
2 Operation

S
L
O
W
NO
NO
CNS O
2
%
DESAT
WARNING
Do not fly icon
No-fly time
No-dive
warning
Residual
nitrogen
bar
Oxygen toxicity
Desaturation time
Surface interval
2.5 How to navigate Aladin at the surface
Starting from the time of day display you can enter into different menus.
• Alarm clock ->48
• UTC time zone ->48
• Time of day ->48
• 24h / AM PM ->49
• Date ->49
• Display contrast ->49
• Sound on / off ->50
• Electronic ID ->50
• IrDA speed ->49
/
• Dive time alarm ->46
• Safety stop
duration ->46
• Salt / fresh water ->46
• Backlight duration ->47
• Depth alarm ->45
• Reset to air ->46
• ppO2max ->46
• Unit system ->46
• Deco gas on/off ->46
• Attention beep
on /off ->47
• Water contacts
on /off ->47
• Reset desaturation ->47
/
Time of day display
Gas 1
O2%
->20
Altitude ->29
(adjustment
->45)
Gauge mode
on / off
->30
Gas d
O2%
->37
Dive
planner
->41
Logbook
->43
Set 2
->48
Set 1
->45
• Date
• (Desat. time CNS O2% )
• Battery condition
->14
->15
->15
Off
MB Level
L0-L5
->32
• Enter with into the function or sub menu.
• With you can switch to the time of day
display.
• After 3 minutes without operation Aladin returns
to the time of day display.

English
15
II UWATEC Aladin TEC 2G
2 Operation
2.10 Active backlight
The display of Aladin can be illuminated both on the surface and underwater.
The backlight can be activated by pushing . The light will turn off auto-
matically. 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.
Battery warning appears. Backlight deactivated. Replace the battery! ->51
Battery performance high enough for diving.
Diving not possible, dive planner and settings are disabled
Flashing battery warning. Audible alarms
and attention messages disabled! Backlight
deactivated! Risk of computer malfunction.
Do not let the battery reach this condition!
WARNING
Bar graph
interpretation
2.9 Checking the battery condition
From the time of day display you can check the battery condition by pushing
2x or 3 x (depending on whether there is desaturation time left).
Aladin displays the estimated remaining battery performance for 5 seconds as
a bar graph. If the bar graph shows 3 segments the battery warning appears
->19 and the battery has to be replaced ->51.
• 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 tempo-
rarily disabled. See below.
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.
Battery condition /
performance
NO
II
WARNING
2.8 Displaying the date
From the time of day display you can display the date by pushing 1x or 2x
(depending on whether there is desaturation time left).
The display switches back to the time of day display after 5 seconds without
operation.
Date

16 II UWATEC Aladin TEC 2G
2 Operation / 3 SOS mode
3 SOS mode
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 auto-
matically 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 load-
ing 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.
• Serious injury or death may result if a diver does not seek immediate treat-
ment 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.
Time remaining until
SOS mode switches
off automatically
NO
NO
DESAT
WARNING
2.11 Switching off the display
From the time of day display you can switch off Aladin by pushing .
On the surface Aladin switches off automatically after 3 minutes without
operation.
2.12 Alarm clock
The alarm clock goes off only at the surface.
If the alarm clock is "on", the time of day display shows .
When alarm is triggered: flashes and special attention beeps are played for
30 seconds or until the user presses a button.
Setting the alarm clock: ->48 ( " set 2 " )
Keeping the backlight permanently on represents a severe strain on the bat-
tery. 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.

English
17
III Diving with Aladin
III UWATEC Aladin TEC 2G
III
1 Terminology / Symbols
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.
1.1 General terminology / Display during no-stop phase
37min dive time
Elapsed bottom time
No-stop time
24min
Current depth
26.2m
Decompress
i
on phase
Dive phase during which
surfacing is allowed only
after decompression
stops are completed.
No-stop phase
Dive phase during which surfacing is allowed
without stop.
Time
Depth
Ascent rate
(Only while
ascending)
%
Current depth
In metres (feet)
Max depth
Max depth
reached during
the dive
No-stop time
Remaining time
at a given depth
during which ascent
is allowed without
decompression
stop (min).
Nitrogen loading
bar
Oxygen toxicity
CNS O2%
Dive time
Duration of
the dive (min)
CNS O2%
DEPTH
NO STOP
DIVE TIME
Max depth
Total ascent time to surface (7min)
6m
35.7m
Decompression rangeNo-stop range
3m
Time
Depth
Decompression
stop depth
Deepest stage is
displayed.
Decompression stop
duration
Prescribed duration of the
decompression stop at the
displayed decompression
stage (minutes).
Total ascent time
Including decompression
stops in minutes.
Decompression stop
All required decompression
stops must be observed.
Deepest
decompression
stop depth
2min
Decompression
stop duration
STOP
NO
DECO
CNS O
2
%
DEPTH DIVE TIME
1.2 Display during decompression phase
(Max depth >) Temperature
> Temperature , O
2
mix and time of day
> (Max depth)…

1.3 Nitrox information (O2information)
For dives with compressed air in normal recreational diving, nitrogen is the decisive gas for the decom-
pression 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.
ppO2 max Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen
in the mixture, the shallower the dive depth at which this value of the partial
pressure of oxygen is reached. The depth at which ppO2max is reached is
called Maximum Operating Depth (MOD).
When you enter the settings for the gas mixture, Aladin will display the
ppO2max limit setting and the cor responding MOD. Aladin warns you audibly
and visually once the depth is reached at which the ppO2reaches the maxi-
mum allowed value ->25.
• Default setting of ppO2max 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 O
2
% 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 O
2
value increases,
if the partial pressure of oxygen is below 0.5bar, the CNS O
2
value decreases.
The closer the CNS O
2
value is to 100%, the closer the limit where symptoms
of oxygen toxicity can occur.
Nitrox diving may only be attempted by experienced divers after proper training
from an internationally recognized agency.
18
1 Terminology / Symbols
III UWATEC Aladin TEC 2G
CNS O
2
%
increases
ppO
2
Depth
at which ppO
2
reaches 0.5bar
for three
commonly
used mixes
0.5bar
21% 13m (43ft)
32% 6m (20ft)
36% 4m (13ft)
CNS O
2
%
decreases
0.21bar
WARNING

English
19
2 Attention messages and alarms
III UWATEC Aladin TEC 2G
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.
• 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.
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.
III
2.1 Attention messages
Attention messages are communicated to the
diver visually by symbols, letters or flashing fig-
ures. In addition, two short audible sequences
can be heard (in an interval of 4 seconds) in two
different frequencies under water.
Attention messages come up in the following
situations (more information can be found on the
listed pages):
Page
• Maximum Operating Depth / ppO
2
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 34
• MB level stop ignored 35
• MB level reduced 35
• Entering decompression when diving
with MB level L1-L5 35
4s
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.
An alarm occurs in the following situations (more
information can be found on the listed pages):
Page
• Oxygen toxicity reaches 100% 25
• Ignored decompression 27
• Exceeding the prescribed ascent rate 24
(Particular scale of beeps, ->24)
• Altitude alarm 29
• Low battery alarm (without audible alarm):
the battery icon appears if the battery has
to be replaced. 51
(can be switched off)
WARNING
WARNING
Serious injury or death may result from failing to immediately respond to
alarms given by Aladin.

20
3 Preparation for the dive
III UWATEC Aladin TEC 2G
or
until
3.1 Setting the gas mixture and ppO2 max
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).
1. Push or until the GAS 1 O2menu 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 .
5. By pushing or you can change the ppO2 max for the chosen frac-
tion of oxygen down to 1.0bar. Aladin will now display the corresponding MOD
for the new ppO2 max.
6. Confirm your ppO
2
max settings with .
• Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
• Automatic reset of the O2% mix to 21% can be set with "set 1" ->46 or Smart-
TRAK between 1 and 48 hours or to "no reset" (default).
Max Operating
Depth MOD
Change the ppO2max by
(+) and (–)
You have to check the settings of Aladin especially before the first dive. All set-
tings can be checked and changed directly at Aladin or via SmartTRAK.
WARNING
Change the O2% mix by
(+) and (–)
ppO2max