SCUBAPRO Aladin 2G Metric Dive Computer User Guide

SCUBAPRO Aladin 2G Metric Dive Computer

Specifications

• Model: Aladin 2G
• Manufacturer: SCUBAPRO
• Compliance: European Union directive 89/686/EEC
• Certification: European Standard EN 13319:2000

Product Usage Instructions

1. Introduction

The Aladin 2G dive instrument is a personal protective equipment designed for scuba diving. It is essential to carefully read and understand the entire manual before using the Aladin 2G.

2. Safety Considerations

Diving involves inherent risks, incuding decompression sickness, oxygen toxicity, and other risks associated with scuba diving with Nitrox or compressed air. It is important to be fully aware of these risks and be willing to accept responsibility before using the Aladin 2G.

3. Diving with Aladin 2G

3.1 Terminology / Symbols

The Aladin 2G display includes various terminology and symbols during different phases of diving, including the no-stop phase and decompression phase. Familiarize yourself with these symbols and their meanings.

3.2 Attention Messages and Alarms

The Aladin 2G may display attention messages and alarms during the dive. Pay attention to these messages and take appropriate actions if necessary.

3.3 Preparation for the Dive

Prior to diving, follow these steps:

• Set the gas mixture and maximum partial pressure of oxygen (ppO2) according to your diving requirements.
• Adjust the MB (Microbubble) level based on your personal preference.
• If diving with two gas mixtures, ensure proper preparation.
• Perform a function check to ensure the Aladin 2G is working correctly.

3.4 Functions during the Dive

During the dive, utilize the various functions of the Aladin 2G to monitor your diving parameters and ensure your safety. Refer to the manual for detailed instructions on using these functions.

FAQs

• Q: Is the Aladin 2G compliant with safety standards?
  • A: Yes, the Aladin 2G is compliant with the essential safety requirements of the European Union directive 89/686/EEC and certified by RINA SpA.
• Q: What is the purpose of setting the gas mixture and ppO2 max?
  • A: Setting the gas mixture and maximum partial pressure of oxygen allows you to customize your diving experience based on your specific gas requirements.
• Q: How can I prepare for diving with two gas mixtures?
  • A: The manual provides instructions on how to properly prepare for diving with two gas mixtures. Follow these instructions to ensure a safe and successful dive.

®
Aladin 2G

English

SAFETY CONSIDERATIONS

You must carefully read and understand this entire manual before using your Aladin 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 2G.

Guidelines for the use of Aladin 2G
The following guidelines for using Aladin 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 2G is designed for dives with compressed air (21% O2) and Nitrox (22 to 100% O2) only. Do not use Aladin 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 2G with open circuit breathing systems. · Only use Aladin 2G for diving with an independent breathing apparatus.
Aladin 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 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 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 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.

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· 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 2G does not substitute for a dive buddy. · Only make dives that are appropriate to your level of dive training. Aladin 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). · 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 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 recognized 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 62, or battery replacement, see page 68) 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 2G prohibits
via the flashing altitude range number (see page 31).
Flying after diving
· After diving, wait at least 24 hours prior to flying.

Aladin 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.
5. 2010

1. Introduction

INTRODUCTION

Congratulations on purchasing Aladin 2G and welcome to SCUBAPRO. From now on you will enjoy the assistance of the most extraordinary dive computer – equipped with SCUBAPRO’s most innovative technology – while diving.
Aladin 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 summarized in special chapters.
We thank you for choosing Aladin 2G and we hope you will enjoy safe dives in the future! Further information on SCUBAPRO dive computers and other products by SCUBAPRO can be found on our web page at www.scubapro.com.
To make this manual easier to read we will use the term “Aladin 2G” as an abbreviation for “SCUBAPRO Aladin 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 2G.
Important remarks concerning signal words and symbols This operating manual makes use of the following icons to indicate especially important comments:
) NOTE: Information and tips which are important for optimal use of the functions of Aladin 2G.
Danger!
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

-> Page reference e.g. ->10
Valid only for dives with 2 gas mixtures Audible signals

4 s

Audible attention signal

Audible alarm signal

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

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.

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SCUBAPRO ALADIN 2G

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1. Introduction

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

Do not fly icon No-dive warning

Current depth
Altitude sections
Logbook 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

Apnea icon
PDIS icon

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

Too fast ascent
Gauge icon Average depth 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

AMPM AM/PM icon DESAT Desaturation icon

Operating scheme “->” means “more information at page”

Off

·(Desat. time CNS O2% ) ->15

· Date

->16

·Battery condition

->16

Gas d
O2% ->48

Gas 1
O2% ->21

Time of day display

MB Level L0-L5 ->37

Dive mode selection (Algo):
deco/gauge/ APNEA ->35

Altitude adjustment
->58

Set 3 ->63 (Apnea)

Set 2 ->63

Set 1 ->58

Dive planner
->54

Logbook ->56

Enter / Scroll / Change setting
Backlight Exit
Without operation the display switches automatically back to the time of day display and after 3 minutes the display switches off.

/

· Dual Depth alarm ->66

· Incremental depth

alarm

->66

· Dive time interval

warning

->66

· Surface interval

warning

->67

· Ascent speed alarm ->67

· Water density

->67

/
· Alarm clock · UTC time zone · Time of day · 24h / AM PM · Date · Display contrast · IrDA speed · Sound on / off · Electronic ID

-> 63 -> 63 -> 64 -> 64 -> 64 -> 64 -> 65 -> 65 -> 65

/

· Depth alarm

-> 58

· Dive time alarm

-> 59

· Safety stop duration -> 59

· ppO2 max · Reset to air

-> 59 -> 59

· Deco gas on / off -> 60

· PDIS

-> 60

· Unit system

-> 60

· Sait / fresh water -> 60

· Backlight duration -> 61

· Attention beep on / off -> 61

· Water contacts on / off -> 61

· Reset desaturation -> 62

See also page 15

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1. Introduction

Gas d O2%

Gas 1 O2%

Display switched off Logbook

Diveplanner PLn

+ Oxygen ­ concentration
+ ppO2 max ­ Confirmation

+ Oxygen ­ concentration
+ ppO2 max ­ Confirmation

Page 1
Max depth
Date of the dive

DEPTH

DIVE TIME

S L O W
+ Dive ­ number

Dive time

( + Surface ­ interval

)

Battery performance
O2 mix

No-stop dive

(MB-) No-stop time

DEPTH

DIVE TIME

NO STOP

Page 2 Altitude range (if>0)
Minimum temperature

Repetitive dive number
Starting time
CNS O2%
CNS O2% at the end

Page 3 SOS if applicable
(MB level)

Surface interval if applicable

O2 mix deco gas (if used)

Exit

After the oldest dive:

Statistic information

Deepest dive
Number of dives

DEPTH

DIVE TIME

S L O W

Longest dive
Cumulative bottom time

+ Depth ­

Decompression dive

+ Bottom ­ time

DEPTH

DIVE TIME NO

DECO STOP

CNS O2%

Exit

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SCUBAPRO ALADIN 2G

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2. System and operation

SYSTEM AND OPERATION

2.1 System description
Aladin 2G 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 2G package.

Aladin 2G

SmartTRAK

Infrared port

Infrared Interface (option)

2.2 Operation

) NOTE: On page 7 and 15 you will find an operating schematic.

2.2.1 Push buttons

Aladin 2G 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:
Push buttons Water contacts (one on front and one on back, inaccessible) Apnea mode:

/

· Switch on Aladin 2G (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 2G

· Start dive manually

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2. System and operation

Underwater dive mode (Algo):
Gauge mode (stopwatch): Diving with two mixtures:

· Access alternate displays · Set bookmark · Operate the backlight · Activate the safety stop timer (dive mode only,
in depths < 6.5m / 20ft)
· Restart

· Initiate switch to gas d or gas 1

·

Interrupt switching process

· Confirm switch to gas d or gas 1

2.2.2 Water contacts
On submerging in water the water contacts switch on Aladin 2G automatically.
WARNING
If you have chosen the option “Water contacts off” (“set 1”, ->58), Aladin 2G 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.

2.2.3 SmartTRAK
With SmartTRAK you can configure Aladin 2G, transfer dive data to a personal computer and graphically display the data. To start the communication, turn on Aladin 2G and place it so that its infrared port is in front of the infrared interface. If Aladin 2G detects an infrared device within range appears.
Configuring Aladin 2G To configure Aladin 2G, select “Dive Computer Settings” under “OPTIONS” on the main menu bar of SmartTRAK after having established communication between your PC and Aladin 2G. The following window will appear:

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2. System and operation
When making any changes to the settings via SmartTRAK, you must press the “Write” icon for the changes to take effect.

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2. System and operation

The following settings may be changed with SmartTRAK or via set 1/set 2/set 3 directly on Aladin 2G:

Scuba Setting

Range

Default

Page

· Depth alarm

5 – 100m (20 – 330ft) on/off 40m (130ft),off 58

· Dive time alarm

5-195min, on/off

60min, off

59

· Safety stop duration

1-5min

3 minutes

59

· Maximum partial pressure of

oxygen (ppO2 max)

1.2-1.6bar

1.4bar

59

· Time limit to reset the O2% mix no reset / 1 – 48hrs

no reset

59

to air

· Deco gas

on/off

off

60

· PDIS (Profile Dependent

on/off

off

60

Intermediate Stop)

· Unit system

metric/imperial

60

· Water type

on (salt water)/off (fresh

on (salt water)

60

water)

· Backlight illumination duration 2-12s ; push on / push off 6s

61

· Audible attention signals

on / off (SmartTRAK:

on

61

selective)

· Water contacts

on / off

on

61

· Reset desaturation

on / off

no reset

62

· Gauge mode

on / off

off

33

· Alarm clock

0 – 23h 59min, on/off

12:00, off

63

· UTC (Universal Time Change) ±13hrs, increments: 15min

63

zone

· Time of day

hours:minutes

64

· 24 or AM/PM setting

24 (off) / AM/PM (on)

64

· Date

64

· Display contrast

1 (low) -12 (high)

4

64

· IrDA speed setting (only “set 2”) low / high

low

65

· Sound

on / off

on

65

Apnea Setting
· Dual Depth alarm 1 · Dual Depth alarm 2 · Incremental depth alarm
· Dive time interval warning · Surface interval warning · Ascent speed alarm · Water density

5-100m (20-330ft)

10m (35ft), off 66

5-100m (20-330ft)

20m (65ft), off 66

5-100m (20-330ft),

5m (20ft), off

66

way down, way up, both off

15s-10min, on/off

30s, off

66

15s-10min, on/off

1 min, off

67

0.1-5 m/s (1-15ft/s)

1 m/s (3 ft/s), off 67

1.000-1.050 kg/l

1.025 kg/l

67

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

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2. System and operation

Downloading your dives

Aladin 2G’s memory allows you to store approximately 25 hours of SCUBA dive profile information in 4 second sampling intervals. In Apnea mode the display is updated faster (in 0.25s intervals and logbook in 1s intervals), therefore in Apnea mode at least 6h of Apnea profiles will be stored. 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 2G, 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 2G’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

Dive computer display
Tissue panel

Alarm symbols Notes panel

Physiology panel

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2. System and operation Dive table

2.2.4 Switching on the display

Time of day 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 O2 mix and the temperature.

) NOTE: This display is called time of day display. Most navigation descriptions start from this display. At the surface Aladin 2G returns automatically to this display.
If there is a remaining saturation from the last dive or from a change of altitude, Aladin 2G also displays the “do not fly” time, the “do not fly” icon, the current altitude range and the prohibited altitude range (->31).

) NOTE: When Aladin 2G 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 2G switches on for 3 minutes automatically ->31. * Only if the option “Water contacts on” (“set 1”, ->61) is chosen. See warning ->10.

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2. System and operation

2.2.5 How to navigate Aladin 2G at the surface Starting from the time of day display you can enter into different menus.
“->” means “more information at page”

Off

· (Desat. time CNS O2% ) ->15

· Date

->16

· Battery condition

->16

Gas d
O2% ->48

Gas 1
O2% ->21

MB Level L0-L5 ->37

Dive mode selection (Algo):
deco/gauge/ APNEA ->35

Time of day display

Altitude adjustment
->58

Set 3 ->63 (Apnea)

Set 2 ->63

Set 1 ->58

Dive planner
->54

Logbook ->56

· Enter with

into the

function or sub menu.

· With

you can switch to

the time of day display.

· After 3 minutes without

operation Aladin 2G returns

to the time of day display.

/

· Dual Depth alarm

->66

· Incremental depth alarm ->66

· Dive time interval

warning

->66

· Surface interval

warning

->67

· Ascent speed alarm ->67

· Water density

->67

/
· Alarm clock · UTC time zone · Time of day · 24h / AM PM · Date · Display contrast · IrDA speed · Sound on / off · Electronic ID

-> 63 -> 63 -> 64 -> 64 -> 64 -> 64 -> 65 -> 65 -> 65

/

· Depth alarm

-> 58

· Dive time alarm

-> 59

· Safety stop duration -> 59

· ppO2 max · Reset to air

-> 59 -> 59

· Deco gas on / off

-> 60

· PDIS

-> 60

· Unit system

-> 60

· Sait / fresh water

-> 60

· Backlight duration -> 61

· Attention beep on / off -> 61

· Water contacts on / off -> 61

· Reset desaturation -> 62

2.2.6 Checking the desaturation time No-fly time
Do not fly icon

NO
DESAT
CNS O2%
S L O W

No-dive warning
Residual nitrogen bar

Desaturation time Oxygen toxicity

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

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2. System and operation

2.2.7 Checking the surface interval
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. 2.2.8 Displaying the date
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. 2.2.9 Checking the battery condition

3 x

(depending on whether there is

desaturation time left).

Aladin 2G displays the estimated remaining battery performance for 5 seconds as a bar graph. If the bar graph shows 3 segments the battery warning appears ->21 and the battery has to be replaced ->68.

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)!

) NOTE: 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.
Bar graph interpretation

NO
Battery condition / performance From the time of day display you can check the battery condition by pushing 2x or

Battery performance high enough for diving.
Battery warning appears. Backlight deactivated. Replace
the battery! ->68
Diving not possible, dive planner and settings are disabled

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2. System and operation

WARNING
Flashing battery warning. Audible alarms and attention messages disabled! Backlight deactivated! Risk of computer malfunction. Do not let the battery reach this condition!
Aladin 2G marks dives started with 3 or less segments in the logbook with the battery symbol. Logbook information is not lost even when the battery is removed for a long time.
2.2.10 Active backlight

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 2G monitors the battery level throughout every dive, and if the available energy drops below the warning threshold, Aladin 2G will automatically disable the backlight to prevent a computer shut down.

2.2.11 Switching off the display

From the time of day display you can switch

off Aladin 2G by pushing

.

On the surface Aladin 2G switches off automatically after 3 minutes without operation.

2.2.12 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: ->63 (“set 2”)

The display of Aladin 2G 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” (->58)

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.

) NOTE: Repeated activation of the backlight will reduce battery life.

) NOTE: 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

2.3 SOS mode
Time remaining until SOS mode switches off automatically
NO
DESAT

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

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2. System and operation
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 ->33. 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.
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 behavior. SCUBAPRO 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.

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3. Diving with Aladin 2G

DIVING WITH ALADIN 2G

3.1 Terminology / Symbols
The information on the display of Aladin 2G varies depending on the kind of dive and the dive phase.

) NOTE: For information about diving with microbubble (MB) levels see ->37. Specific features of “Diving with two gas mixtures”, are described in chapter 8 ->48.

3.1.1 General terminology / Display during no-stop phase

Current depth In metres (feet)

DEPTH

DIVE TIME

NO STOP CNS O2%

Max depth Max depth reached during the dive

Oxygen toxicity CNS O2%

Ascent rate

(Only while

ascending)

%

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

Depth

No-stop phase Dive phase during which surfacing is allowed without stop.
Time

Current depth

24min

Decompression phase
Dive phase during which surfacing is allowed only after decompression stops are completed.

26.2m Max depth 37min dive time Elapsed bottom time

No-stop time

(Max depth

) Temperature

Temperature , O2 mix and time of day

3.1.2 Display during decompression phase

Decompression stop

All required decompression

Time

stops must be observed.

Depth

DEPTH

DIVE TIME
NO

DECO STOP

CNS O2%

(Max depth)…

Total ascent time to surface (7min)

3m

6m

Deepest

decompression

stop depth

2min Decompression stop duration

Decompression stop depth Deepest stage is displayed.
Decompression stop duration Prescribed duration of the decompression stop at the displayed decompression stage (minutes).

35.7m No-stop range
Total ascent time Including decompression stops in minutes.

Decompression range

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3.1.3 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 2G 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 ppO2 max is reached is called Maximum Operating Depth (MOD). When you enter the settings for the gas mixture, Aladin 2G will display the ppO2 max limit setting and the corresponding MOD. Aladin 2G warns you audibly and visually once the depth is reached at which the ppO2 reaches the maximum allowed value ->25.
) NOTE: · 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 (->59). It can also be changed at the time of setting the gas mixture (->21). · 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.

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

CNSO2% decreases
CNSO2% increases

ppO2 0.21bar
0.5bar

WARNING
Nitrox diving may only be attempted by experienced divers after proper training from an internationally recognized agency.
3.2 Attention messages and alarms
Aladin 2G 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.
) NOTE: · The audible attention messages can be switched off in “set 1” ->58 or SmartTRAK. With SmartTRAK they can be switched off selectively. · In addition, the sound can be turned off completely in “set 2” ->65.
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.

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3. Diving with Aladin 2G

WARNING
Serious injury or death may result from failing to immediately respond to alarms given by Aladin 2G.

3.2.1 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

24

· Oxygen toxicity reaches 75%

26

· No-stop time less than 3 minutes

27

· Prohibited altitude (surface mode)

31

· Entering decompression

(when diving with L0)

27

· Half of set dive time is reached

23

· Set dive time is reached

23

· Depth for tank switch has been reached 52

Diving with MB levels (L1-L5):

· MB no-stop time = 0

40

· MB level stop ignored

40

· MB level reduced

41

· Entering decompression when diving with

MB level L1-L5

41

3.2.2 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.

·

Low battery alarm (without audible

alarm): the battery icon appears if

the battery has to be replaced 68

·

Apnea mode alarm

35

3.3 Preparation for the dive
You have to check the settings of Aladin 2G especially before the first dive. All settings can be checked and changed directly at Aladin 2G or via SmartTRAK.
3.3.1 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 2G 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 48 for further reference. To set the gas mixture, Aladin 2G must be in user mode (time of day display).

or

until

1. Push

or

menu appears.

until the GAS 1 O2

2. Confirm that you wish to change the oxygen fraction of gas 1 by pushing .

An alarm occurs in the following situations

(more information can be found on the listed

pages):

Page

· Oxygen toxicity reaches 100%

26

· Ignored decompression

28

· Exceeding the prescribed ascent rate 24

(Particular scale of beeps, ->25)

· Altitude alarm

31

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ppO2max

Max Operating Depth MOD

Change the O2% mix by

(+)

and

(­)

3. Change the oxygen fraction in incre-

ments of 1% by pushing

or

. Aladin 2G will display the current

fraction of oxygen, the maximum partial

pressure limit (ppO2 max) and the MOD. 4. Confirm the selected percentage with

.

SmartTRAK between 1 and 48 hours or to “no reset” (default).

3.3.2

Setting the MB level

See chapter 6, ->37

3.3.3 Preparation for diving with two gas mixtures
See chapter 8, ->48

3.3.4 Preparation for the dive and function check

Switch on Aladin 2G by pushing

and

check the test display: Are all elements of

the display activated? Do not use Aladin 2G

if the display does not show all elements.

When switching on Aladin 2G with

,

the test display will not appear.

WARNING
Check the battery capacity before each dive ->16.

Change the ppO2 max by (­)

(+) and

5. By pushing

or

you can

change the ppO2 max for the chosen fraction of oxygen down to 1.0bar. Ala-

din 2G will now display the correspond-

ing MOD for the new ppO2 max. 6. Confirm your ppO2 max settings with
.

) NOTE: · 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” ->58 or

3.4 Functions during the dive
3.4.1 Immersion If the water contacts are deactivated (->61), switch on Aladin 2G before immersion.
WARNING
If you have chosen the option “Water contacts off” (“set 1″ or SmartTRAK), Aladin 2G will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.
After immersion, starting at a depth of about 0.8m (3ft), all diving functions

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are monitored, i.e. depth and dive time displayed, max depth stored, saturation of tissues calculated, no-stop time or decompression prognosis determined, ascent rate controlled and displayed and the correctness of the decompression procedure supervised.

3.4.2 Setting bookmarks

During the dive you can create bookmarks

in your dive profile by pressing

. The

logbook icon appears for 4 seconds

and an audible signal confirms the creation

of the bookmark. These bookmarks will be

graphically displayed in the dive profile of

SmartTRAK.

3.4.3 Dive time

Dive time

DEPTH

DIVE TIME

NO STOP

WARNING
Set dive time has elapsed ->23, 59 An audible signal goes off and the dive time starts flashing.

3.4.4 Current depth / O2% mix
Current depth is given in 10cm increments in metric setting and 1ft increments in imperial setting.

DEPTH

DIVE TIME

NO STOP

Current depth

S L O W
O2% mix

Nitrogen loading bar

DEPTH

DIVE TIME

The whole time spent below a depth of 0.8m (3ft) is displayed as dive time in minutes. The time above 0.8m (3ft) is counted as dive time only if the diver descends again below 0.8m (3ft) within 5 minutes. While the dive time is running, the colons on the right of the figures are flashing in one second intervals. Maximum dive time displayed is 199 minutes.
) NOTE: If a dive lasts longer than 199 minutes the dive time display starts again at 0 minutes.
WARNING
Half time alarm (turn around alarm) ->59 If half of the set maximum dive time has elapsed, an audible signal goes off and flashes for 1 minute.

At a diving depth of less than 0.8m (3ft) the display shows ” ­ ­ ­ “.
The O2% mix is diplayed as long as CNS O2% = 0 and no ascent speed is indicated.

3.4.5 Max depth / Temperature

DEPTH

DIVE TIME

NO STOP
CNS O2%

Max depth

CNS O2%

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Max depth is only displayed if it exceeds the current depth by more than 1m (3ft) (maximum indicator function). If max depth is not displayed, Aladin 2G shows the temperature.

Temperature, O2 mix > Temperature , Time ,
O2 mix > Max depth
Set max depth reached
4s

DEPTH

DIVE TIME

NO STOP

WARNING
If the max depth set with SmartTRAK or “set 1” has been reached (default 40m/130ft) and the depth alarm is turned on, the depth display will flash. Ascend until the depth stops flashing.

3.4.6 Ascent rate

DEPTH

DIVE TIME

NO STOP

S L O W
Ascent rate
Optimal ascent rate varies depending on depth between 7 and 20m/min (23 and 67ft/min). It is displayed as a percent of the reference variable ascent rate. If the ascent rate is greater than 100% of the set value, the black arrow “SLOW” appears. If the ascent rate exceeds 140%, the arrow starts flashing. Aladin 2G provides an audible alarm if the ascent rate is 110% or greater. The intensity of the alarm increases in direct proportion to the degree that the prescribed ascent rate is exceeded.
WARNING
The prescribed ascent rate must be observed at all times! Exceeding the prescribed ascent rate can lead to microbubbles in the arterial circulation which can lead to serious injury or death due to decompression sickness.
· In case of an improper ascent Aladin 2G may require a decompression stop even within the no-stop phase because of the danger of microbubble formation.
· The decompression duration necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded.
· From great depth a slow ascent may cause heightened saturation of tissues and an extension of both decompression duration and total ascent time. At shallow depth, a slow ascent may shorten the decompression duration.

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3. Diving with Aladin 2G

· Display of the ascent rate has the priority over “CNS O2”.

Ascent rate
% %

WARNING
Visual alarm Audible alarm
S L O W
S L O W

S

%

L O

W

S

%

L O

W

Reduce ascent rate

Excessive ascent rates for longer periods are entered in the logbook.
The following ascent rates correspond to the 100% value in Aladin 2G.

depth (m) <6 <12 <18 <23 <27 <31 <35 <39 <44 <50 >50

speed (m/min) 7 8 9 10 11 13 15 17 18 19 20

depth (ft) <20 <40 <60 <75 <88 <101 <115 <128 <144 <164 >164

speed (ft/min) 23 26 29 33 36 43 49 56 59 62 66

3.4.7 Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD)
4s

DEPTH

DIVE TIME

NO STOP
CNS O2%

Max Operating Depth MOD
The maximum partial pressure of oxygen ppO2 max (default 1.4bar) determines the Maximum Operating Depth (MOD). Diving deeper than the MOD will expose the diver to oxygen partial pressures higher than the set maximum level.
The ppO2 max and consequently the MOD can be reduced manually (->21, setting the gas mixture, point 5).
In addition the maximum allowed ppO2 can be set by means of SmartTRAK or with “set 1” between 1.2 to 1.6 bar ->59.
WARNING
The MOD is a function of ppO2 max and the mixture used. If during the dive the MOD is reached or exceeded Aladin 2G sends an audible attention message and the MOD is displayed (flashing) in the lower left corner. Ascend to a depth shallower than the displayed MOD in order to diminish the danger of oxygen poisoning.

WARNING
The MOD should not be exceeded. Disregarding the warning can lead to oxygen poisoning.

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3. Diving with Aladin 2G

3.4.8 Oxygen toxicity (CNS O2%)
CNS O2%

DEPTH

DIVE TIME

NO STOP

Oxygen toxicity

Aladin 2G calculates oxygen toxicity based on depth, time and the gas mixture and displays it in the location of the ascent rate. The toxicity is expressed in 1% increments of a maximum tolerated value (O2 clock). The symbol “CNS O2” is displayed together with the percentage.
4s

DEPTH

DIVE TIME

CNS O2%
WARNING
When oxygen toxicity reaches 100%, an audible alarm goes off every 4 seconds. “CNS O2” and the percentage value flash. Danger of oxygen toxicity! Start procedure for terminating the dive.

NO STOP
CNS O2%
WARNING
An audible attention signal goes off if oxygen toxicity reaches 75%. The symbol “CNS O2” flashes. Ascend to shallower depth to decrease oxygen loading and consider terminating the dive.

) NOTE: · During an ascent and if the CNS O2% value does not increase anymore (due to a lower partial pressure of oxygen), the audible warning is suppressed. · During the ascent, the display of the oxygen toxicity is replaced by the ascent rate. If the ascent is stopped, the display changes back to the indication of the CNS value. · Aladin 2G will display CNS O2% values exceeding 199% with 199%.
3.4.9 Nitrogen loading bar graph
The nitrogen loading bar gives a graphical representation of how close to decompression you are. As you absorb nitrogen during the dive, more and more segments of the bar will light up. Depending on your depth, the segments can light up more or less rapidly.

1-3 segments (green area): you are safely within the no-stop range

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3. Diving with Aladin 2G

4-5 segments (yellow area): you are approaching decompression. When the no- stop time drops below 3 minutes the 5 segments will start flashing.**
6 segments (red area): you now have mandatory decompression obligation(s) which you must observe before reaching the surface.

stop value and the nitrogen loading bar begin to flash. If no-stop time is less than 1 minute, the nostop display shows the flashing value “0”. In order to prevent a decompression dive, ascend slowly until the no-stop time is 5 minutes or more.

4s

DEPTH

DIVE TIME

** Depending on your profile, the no-stop time may drop below 3 minutes before the upper 5 segments are lit. In this case, only those segments that are lit will flash.
If you have entered decompression, the 6th segment will turn off as soon as you complete your last decompression obligation to indicate that you are no longer in decompression.

3.4.10 Decompression information

NO STOP and the no-stop time (minutes) are displayed if no decompression stops are necessary.

DEPTH

DIVE TIME

NO STOP
CNS O2%

NO STOP

CNS O2%

No-stop time less than 1 minute

WARNING
Decompression diving requires advanced training from a recognized agency. Do not attempt decompression diving without proper training from a recognized agency.

Decompression values

Decompression obligation

DEPTH

DIVE TIME

No-stop time Nitrogen loading bar
) NOTE: · No-stop display “99:” means remaining time of 99 minutes or more. · No-stop time is influenced by the water temperature.
WARNING
If no-stop time drops below 3 minutes, an audible attention signal is activated, the no-

DECO STOP

CNS O2%

Decompression stop duration

Decompression depth

On entering the decompression phase,

“NO STOP” disappears, the

DECO STOP

symbol

appears and an attention beep goes off.

The nitrogen loading bar stops flashing and

the 6th segment lights up (red area). The

deepest decompression stage in metres

(feet) is displayed and the decompression

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3. Diving with Aladin 2G

stop duration of the displayed stage appears in minutes. The display “7: 3m (10ft)” means that a decompression stop of 7 minutes at a depth of 3m (10ft) has to be made.

When a decompression stop has

been completed, the next (shallower)

decompression stop is displayed. When

all decompression stops have been

completed,

the

DECO STOP

symbol extinguishes, “NO

STOP” and no-stop time reappear.

Deco stop depths deeper than 27m (90ft) are displayed as ” ­ ­ : ­ ­ “.

DEPTH

DIVE TIME

DECO STOP

CNS O2%

Ignored decompression alarm

WARNING

The decompression alarm is activated if the

decompression stop is ignored. The arrow

DECO STOP

, the decompression stop duration and

decompression stop depth begin to flash and

an audible alarm goes off.

Due to the formation of microbubbles,

decompression can increase massively if a

decompression stop is ignored. When the

surface is reached during the decompression

alarm,

the

arrow

DECO STOP

, the decompression

stop duration and decompression stop depth

continue flashing, in order to point to the risk

of a decompression accident. The SOS mode is

activated 3 minutes after the dive if corrective

action is not taken (->17).

If the total (cumulative) duration of the

decompression alarm is longer than one

minute, it is entered in the logbook.

Descend to the prescribed decompression

stop depth immediately!

Total time of ascent

DEPTH

DIVE TIME
NO

DECO STOP

CNS O2%

Total ascent time
As soon as decompression stops are necessary Aladin 2G shows the total time of ascent. This includes the ascent time from the current depth to the surface and all decompression stop obligations.
) NOTE: · The total time of ascent is calculated on the basis of the prescribed ascent rate. Total time of ascent can be subject to change if the ascent rate is not ideal (100%). · Ascent time greater than 99 minutes is displayed as ” ­ ­ “.
WARNING
On all dives with Aladin 2G, make a safety stop for at least three minutes at a depth of 5m (15ft).

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3.4.11 Safety stop timer

DEPTH

DIVE TIME

3. Diving with Aladin 2G

3.5 Functions at the surface

3.5.1 End of a dive

DEPTH

DIVE TIME

STOP
CNS O2%

Safety Stop icons

Remaining time span (minutes / seconds)

The safety stop timer displays the time span a diver should spend at the safety stop depth at the end of the dive. The timer starts automatically when depth is shallower than 6.5 m and counts back from 3 minutes (default) to zero. It can be restarted manually any number of times. The duration of the timer can be set between 1 and 5 minutes.

The safety stop timer will be activated under the following conditions: depth <6.5 m (21ft), no-stop display 99 min, gauge mode is switched off, stop time is selected (1-5 min) at set 1 menu.

Activate the safety stop timer by pressing . The timer begins to count backwards
and a bookmark will be created in the dive profile. If you press again, the timer will start again from the full value.

The safety stop timer will switch off automatically if the depth exceeds 6.5 m (21 ft) or the no-stop phase is shorter than 99 minutes.

CNS O2%
Depth less than 0.8m (3ft) After reaching the surface (<0.8m/3ft) Aladin 2G remains in dive mode for 5 minutes. The delay allows for surfacing for a short period for orientation. After 5 minutes the dive is closed and it is entered into the logbook. The time of day is then displayed for 3 minutes, after which the computer turns off.
WARNING
For the calculations of the desaturation and no-fly time it is assumed that the diver breathes air while on the surface.
3.5.2 Residual nitrogen bar graph The segments in the residual nitrogen bar graph will gradually turn off as Aladin 2G follows the offgassing of your tissues during your surface interval. There is a 1:1 equivalence in the meaning of the segments between diving and surface. Thus, on a repetitive dive the bar will resume from its status on the surface just prior to the dive. There are two exceptions however: · the uppermost segment will stay lit until
the desaturation time is completely extinguished. This is done to show that there is desaturation time left and that a dive started at this point will be logged as a repetitive dive. If the remaining desaturation time is very short, this segment could however at first disappear during the dive; · during the 24 hours of an SOS-lock, all segments will stay on.

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3. Diving with Aladin 2G

3.5.3 Desaturation time, No-fly time and No-dive warning No-fly time Do not fly icon
No-dive warning

NO
DESAT

NO
S L O W
Time of day Residual nitrogen bar
Ascent to altitude range 4 prohibited

CNS O2%
S L O W

Desaturation time

Residual nitrogen bar

Oxygen toxicity

To check the elapsed surface interval

press

.

5 minutes after a dive Aladin 2G shows the time of day, the “do not fly time”, the no-dive warning (if applicable), the current altitude range and the prohibited altitude range (->31).
No-fly time is the time in hours that should pass before a flight and is displayed and adjusted until the value becomes 0 hours.
WARNING
Flying while Aladin 2G displays “do not fly” may lead to serious injury or death from decompression sickness.

WARNING
If the “no-dive” warning is visible during the surface interval, the diver should not undertake another dive.

To check the remaining desaturation time

and oxygen toxicity press

.

Surface interval
Desaturation time is determined either by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time.
No-dive warning
If Aladin 2G detects a situation of increased risk (due to the potential of microbubble accumulation from previous dives or a CNS O2 level above 40%), the no-dive symbol will appear on the display. The duration of the no-dive warning is visible in the dive planner menu. Aladin 2G recommends this as minimum surface interval in order to reduce the number of microbubbles and/or to reduce the CNS O2 level below 40%.
) Note: You should not undertake a dive as long as the no-dive warning message is displayed on the computer screen. If the warning is prompted

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3. Diving with Aladin 2G

by microbubble accumulation (as opposed to CNS O2 over 40%) and you dive anyway, you will have shorter nostop times or longer decompression times. Moreover, the duration of the no-dive warning at the end of the dive can increase considerably.
3.6 Diving in mountain lakes
3.6.1 Altimeter The altitude adjustment ->58 does not affect altitude ranges nor any calculations.
3.6.2 Altitude ranges
Altitude icon Altitude range 2

Aladin 2G measures the atmospheric pressure every 60 seconds even while the display is switched off. If the computer detects a sufficient increase in altitude, it switches on automatically and indicates the new altitude range (1-4) and the desaturation time. Desaturation time indicated at this moment refers to adaptation time at this altitude. If the dive starts within this adaptation time, Aladin 2G treats it as a repetitive dive, since the body is offgassing. Altitude is divided into five ranges, which are influenced by barometric pressure. That is why the defined altitude ranges overlap on their fringes. If a mountain lake is reached, the altitude range is indicated at the surface (time of day display), in the logbook and in the dive planner by a stylized mountain and the current altitude range. Sea level to an altitude of approximately 1000m (3300ft) is not indicated. In the following diagram, you can see the approximate breakdown of the altitude ranges:

Altitude ranges

No deco data gauge mode 4000m
13120ft
3000m 9840ft
2000m 6560ft
1000m 3280ft
0m

Switching at approx. 610mbar
8.85psi
725mbar 10.51psi 815mbar 11.82psi
905mbar 13.12psi

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3.6.3

Prohibited altitude
Ascent to altitude range 3 and 4 prohibited. Max allowed altitude: 2650m (8694ft).

3.6.4 Decompression dives in mountain lakes

DEPTH

DIVE TIME

WARNING
Aladin 2G shows via flashing altitude segments while at the surface to which altitude the diver may not rise.

Max altitude: 850m/2790ft

Max altitude: 1650m/5413ft

Max altitude: 2650m/8694ft

Max altitude: 4000m/13120ft

The ascent prohibition can also be displayed together with an altitude range:

Example: You are at 1200m (3937ft) (altitude range 1) and you may ascend to range 2 only (2650m / 8694ft). You may not rise to the altitude range 3 or 4.

Dive at altitude range 4: no deco data (gauge mode)
In order to assure optimal decompression even at higher altitudes, the 3m (10ft) decompression stage is divided into a 4m (13ft) stage and a 2m (7ft) stage in altitude ranges 1, 2 and 3. The prescribed decompression stop depths are, in sequence, 2m / 4m / 6m / 9m… (7ft / 13ft / 20ft / 30ft…).
If atmospheric pressure is below 620mbar (8.99psi) (altitude higher than 4100m / 13450ft above sea level), Aladin 2G switches automatically to gauge mode and no decompression data is calculated and displayed.
In addition, the dive planner is not available anymore.

WARNING
If an ascent to a prohibited altitude is detected, an audible alarm goes off for 1 minute. Descend to a lower altitude.
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4. Gauge mode

4. GAUGE MODE

WARNING
In gauge mode ALL audible and visual alarms and attention messages are turned off.

In gauge mode Aladin 2G will display depth,

dive time and max depth. By pressing

you can scroll from the max depth to

the temperature, to the average depth,

to the time of day and back to the

max depth. By pressing

you can

restart the stopwatch. This generates

a bookmark. Gauge mode does not

support the calculation of no-stop time

or the supervision of decompression.

Supervision of ppO2 max and CNS O2% will also be switched off. Aladin 2G will

display no information about microbubble

development. The settings for the gas

mixture, MOD and microbubble level

cannot be set and the dive planner cannot

be selected.

Switching the gauge mode on and off Gauge mode can be switched on and off at the surface, when there is no desaturation and no-dive in gauge mode has been made in the last 48 hours.

WARNING
· Dives in gauge mode are performed at your own risk!
· After diving in gauge mode you must wait for at least 48 hours before using a decompression computer.

After diving in gauge mode, Aladin 2G can not be used as dive computer for 48 hours.
Procedure:

1. From the time of day display push

or

until the “ALGO” is displayed.

(If Aladin 2G shows ” ­ ­ ­ ” the gauge

mode cannot be switched “on” or “off”.

Aladin 2G shows ” ­ ­ ­ ” for 48 hours

after a dive in gauge mode and as long

as there is remaining desaturation after

a dive in computer mode.)

2. Confirm with

that you wish to

activate or deactivate the gauge mode.

“deco”, “gauge” or “apnea” starts

flashing.

3. By pushing

or

the mode will

scroll between: Gauge, Deco (SCUBA

diving) or Apnea. Select: “Gauge”.

4. Confirm your settings with

.

Without confirmation the display will disappear after 3 minutes and your entries will not be accepted.
Diving in gauge mode The following information is displayed in gauge mode:

Current depth
Stopwatch

DEPTH

DIVE TIME

Dive time

Max depth / Temperature / Average depth (AVG)

Gauge icon

Temperature

Average depth (AVG)

Temperature , Time

Max depth

The average depth is continuously

updated and represents the time averaged

depth since the beginning of the dive.

You can reset the average depth at any

time by pushing

. This generates also

a bookmark.

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4. Gauge mode

Stopwatch

Stopwatch icon

DEPTH

DIVE TIME

After diving in gauge mode
NO

Timing Hours Minutes Seconds
In gauge mode, after immersion, Aladin 2G will automatically monitor the dive time and at the same time activate the stopwatch. The stopwatch will run for a maximum of 24 hours.
Resets time and starts stopwatch from zero. Each start (restart) of the stopwatch creates a bookmark.

Remaining time during which Aladin 2G cannot be used in computer mode
Aladin 2G shows the remaining time span during which it cannot be used in computer mode. Once the waiting period is over, the gauge mode can be switched off manually ->33.
The no-fly time after diving in gauge mode is 48 hours.
Desaturation time will not be displayed.

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5. Apnea mode

APNEA MODE

5.1 Switching the Apnea mode on and off
Apnea mode can be switched on and off like Gauge mode, when there is no desaturation and no apnea dives have been made in the last 48 hours.
WARNING
Apnea diving after SCUBA diving is not recommended. Check the latest recommendation from your Instructor or Diving organization.
WARNING
Aladin 2G doesn’t track nitrogen intake to your body at Apnea mode. Therefore no fly time after Apnea diving is set to 48 hours. Also SCUBA diving after Apnea is recommended only after sufficient surface time. Check the latest recommendation from your Instructor or Diving organization.
Procedure:

1. From the time of the day display push

or

until ALGO is displayed.

2. Confirm with

that you wish to

activate or deactivate the Apnea mode.

“deco”, “gauge” or “apnea” starts flash-

ing.

3. By pushing

scroll between modes

and select the apnea mode.

4. Confirm your setting with

.

WARNING
SCUBAPRO highly recommends professional training in apnea or free diving techniques and physiology before conducting breath hold dives. No dive computer can replace the need for proper dive training. Insufficient or improper training may cause a diver to commit errors that can lead to serious injury or death.
WARNING
Deep repetitive Apnea dives are not recommended; leave enough recovery time between your Apnea dives.
WARNING
All breath hold dives include a risk of shallow water blackout, that is, a sudden loss of consciousness due to oxygen starvation.
Apnea diving is the most natural form of diving, known also as Free diving or Breath hold diving. Due to specific demands on Apnea diving, Aladin 2G has now this mode integrated. Apnea mode is comparable to Gauge mode, it doesn’t have a dive algorithm and all decisions are left to the diver. Therefore SCUBAPRO recommends: 1. Never apnea dive alone. 2. Make only apnea dives which your
education and physical condition allow.
In apnea diving fast descents and ascents are allowed. Therefore Aladin 2G uses faster sampling of the depth for higher accuracy. Aladin 2G updates display and maximum depth every 15 seconds, logbook is updated every second.

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5. Apnea mode
5.2 Diving in Apnea mode
The following information is displayed in Apnea mode:

In Apnea mode the dive can be started

manually by pressing

. This function

allows fast sampling to start straight from

the surface. Automatic start of the apnea

dive will happen from depth of 0.8m/3ft.

Once activated the Apnea mode will run 15

minutes after surfacing. This allows you to

start a repetitive apnea dive with precise

data in the logbook. Surface mode can be

stopped with long press

.

Aladin 2G Apnea mode has special alarms and functions tailored to Apnea diving and Apnea training. You can select multiple alarm functions at the same time. The alarm functions setup is explained in page ->66.

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6. Diving with microbubble (MB) levels

DIVING WITH MICROBUBBLE (MB) LEVELS

) NOTE: The following chapter deals with the characteristics of diving with microbubble (MB) levels. For general information about displays and features of diving with Aladin 2G see chapter 3.
Microbubbles are tiny bubbles that can build up inside a diver’s body during any dive and normally dissipate naturally during an ascent and on the surface after a dive. Dives within no-stop time and observance of decompression stops do not prevent the formation of microbubbles in the venous blood circulation. Dangerous microbubbles are those migrating into the arterial circulation. The reasons for the migration from the venous blood circulation to the arterial circulation can be a great many microbubbles collecting in the lungs. SCUBAPRO has equipped Aladin 2G dive computers with a new technology to protect from microbubbles. The diver chooses ­ according to his/her needs ­ an MB level and influences through it the level of protection from microbubbles. Diving with MB levels requires additional ascent stops (level stops), the ascent is slowed down and the body gets more time to desaturate. This works contrary to the formation of the microbubbles and increases safety. Aladin 2G features 6 microbubble levels (L0-L5). Level L0 corresponds to SCUBAPRO’s well-known decompression model ZH-L8 ADT and does not require level stops due to microbubble formation. Levels L1 to L5 offer additional protection from microbubble formation with level L5 offering the highest protection. Similar to the display of information during decompression dives or dives within nostop time, Aladin 2G displays depth and duration of the first level stop as well as the total time of ascent as soon as the MB nostop time has run out. As the MB no-stop

time is shorter than the ordinary no-stop time a diver will be required to carry out a stop (level stop) sooner than a diver using level L0. If a diver ignores a required level stop, Aladin 2G will cascade to a lower MB level and the dive can not be completed with the initially chosen MB level. E.g. if a diver sets level L4 on Aladin 2G prior to the dive and during the dive ignores the recommended stops Aladin 2G will automatically adjust the setting to level L3 or lower.

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6. Diving with microbubble (MB) levels

6.1 Comparison of dives with MB level L0 and MB level L5

When two Aladin 2G are used simultaneously, one unit is set for example to MB level L5, the other to L0, the no-stop time will be shortened and level stops will be required before the diver has the obligation of a decompression stop. These additional level stops help dissipate the microbubbles.

Depth

Microbubble accumulation at the end of dive
Time

L0 L5

3m/10ft 6m/20ft 9m/30ft

12m/40ft

15m/50ft

Stop depth

MB level

L0
NO STOP

NO STOP

NO STOP

L5

STOP

STOP

NO STOP

DECO STOP

DECO STOP

Decompression values Decompression obligation, ->41 Level stop values

6.2 Terminology

This chapter will exclusively deal with terminology and display features used while diving with MB levels. All other features are described in chapter 3 (->19).
6.2.1 Display during MB no-stop phase

MB no-stop time Remaining time at a respective depth allowing ascent without level stop.

DEPTH

DIVE TIME
NO

NO STOP

CNS O2%

Depth

MB no-stop phase Dive phase during which surfacing is possible without MB level stop.
Time

Level stop phase

16min Dive time

9min MB no-stop time

2 x
MB level activated Level L2 is active

Nitrogen loading bar relative to LO –>>2267
35.7m

Current depth Max depth

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Depth
English

6. Diving with microbubble (MB) levels

(Max depth

) Temperature

MB level active > No-stop time relative to L0 > Temperature and time of day (Max depth)…

) NOTE: Whereas the quantitative information relative to L0 can be seen by pressing the right button, qualitative information is always visible on the display in form of the nitrogen loading bar. In particular, when the L0 no- stop time is less than three minutes, the nitrogen bar will flash ->27. This will help you avoid entering inadvertently into decompression.

6.2.2 Display during level stop phase

Total ascent time including level stops

DEPTH

DIVE TIME

Time

STOP

CNS O2%
S L O W

Level stop depth The deepest level stop is displayed.

Nitrogen loading bar relative to LO ->267

Level stop duration The duration of a level stop at a given level stop depth is displayed.

35.7m

MB no-stop phase

Total ascent time (14min)

3m/10ft

6m/20ft

9m/30ft

Lowest level stop depth

3min Level stop duration

Level stop phase To complete the dive without cascading to a lower MB level all requested level stops must be observed.

(Max depth

) Temperature

MB level active

No-stop time or deco information relative to L0

Temperature and time of day

(Max depth)…

6.3 Preparation for a dive with MB levels

6.3.1 Setting the MB level
To change the MB level Aladin 2G must be in user mode (time of day display).

or

until

1. Push

or

until the symbol for

MB levels appears.

2. Confirm that you wish to change the

displayed MB level by pushing

.

3. Change MB level by pushing

or

.

4. Confirm the selected MB level with

.

Without confirmation the display will disappear after 3 minutes and your entries will not be accepted.

Aladin 2G will display the

symbol to

confirm that an MB level beyond L0 (L1-

L5) has been chosen. During the dive the

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6. Diving with microbubble (MB) levels

MB level is shown by pressing 2x

.

If however a level stop is ignored, the new

MB level is shown (->41).

) NOTE: MB levels have an influence on the dive planner.

Level stop Level stop icon
DEPTH

DIVE TIME
NO

6.4 Functions during the dive with MB levels

6.4.1 Level stop information
MB no-stop time While diving with MB levels L1 to L5 Aladin 2G will display the MB no-stop time instead of the ordinary no-stop time. Within the MB no- stop time no level stops are required. “NO STOP” and the MB level symbol are visible. The remaining MB no-stop time is shown in minutes.

DEPTH

DIVE TIME

NO STOP

MB no-stop time Nitrogen loading bar relative to L0
) NOTE: · Information and alarms for MB no-stop time and ordinary no-stop time are the same (->27). · No-stop time relative to L0 is shown by pressing 3x (see ) · Regardless of the MB level, we generally recommend to perform a slow ascent during the last few metres / feet.

STOP
CNS O2%

Level stop Deepest level Total time duration stop depth of ascent
On entering the level stop phase, “NO STOP” disappears and the arrow STOP appears. The STOP arrow flashes for 8 seconds and an audible attention beep goes off. To complete the dive without cascading to a lower MB level, all requested level stops must be observed. The deepest level stop is displayed in metres (feet). The display “2: 3m ” (“2: 10ft”) means that a level stop of 2 minutes at a depth of 3 metres (10 feet) has to be observed. Deco information relative to L0 is shown on an alternate display (see ). When a level stop has been finished, the next higher level stop ­ if present ­ is displayed. When all level stops have been observed, the arrow STOP extinguishes and “NO STOP” reappears. The indication of time shows the MB no-stop time again.
4s

DEPTH

DIVE TIME

STOP
CNS O2%
Level stop ignored

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6. Diving with microbubble (MB) levels

WARNING
The attention message “Level stop ignored” is activated if the requested level stop is not observed. An attention beep* goes off and the arrow STOP , the depth and duration of the ignored level stop begin flashing. To complete the dive without being reduced to a lower MB level, you must descend to the prescribed depth immediately!

MB level reduced 4s

DEPTH

DIVE TIME

STOP

CNS O2%

New MB level
WARNING
The warning “MB level reduced” is activated if the diver ascends more than 1.5m (5ft) above the required level stop. Aladin 2G reduces the MB level, an attention beep* goes off and the new MB level is shown in the lower left corner. To complete the dive without being further reduced to an even lower MB level the new level stop must be observed.

6.4.2 Total time of ascent

DEPTH

DIVE TIME
NO

STOP
CNS O2%
Total ascent time
Aladin 2G displays the level stop information and the total time of ascent. This includes the time of ascent as well as all level stops.
) NOTE: The total time of ascent is calculated on the basis of the prescribed ascent rate. Total time of ascent can be subject to change if the ascent rate is not ideal (100%).
6.4.3 Decompression obligation Aladin 2G calculates and displays level stops to reduce microbubble formation, but it also calculates the diver’s decompression data.
WARNING
Avoid decompression dives when diving with MB levels.

) NOTE: * Attention beeps can be suppressed with “set 1” (->61) or via SmartTRAK.

4s

DEPTH

DIVE TIME

DECO STOP

CNS O2%

SCUBAPRO ALADIN 2G

How to avoid decompression stops: · Check ordinary no-stop time by pushing
until L0 appears.
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6. Diving with microbubble (MB) levels

· Observe the nitrogen loading bar (it is relative to L0) ->27, ->38, ->39.
· If the nitrogen loading bar flashes (less than 3 minutes to deco): ascend slowly a few metres/feet.
WARNING
At the beginning of a decompression phase an attention beep goes off and the DECO symbol flashes for 8 seconds. In order to prevent a dive with long decompression stops it is recommended that you ascend a few metres/feet on seeing this message.
Decompression obligation

6.4.4 Level stop and deco stop

When the level stop depth equals the depth

of the first obligatory decompression stop

and if you are within 1.5m /5ft of the stop

depth

itself,

Aladin 2G

shows

DECO STOP

and

STOP (level stop). The indicated duration

refers to level stop duration.

Since level stops are more restrictive

than decompression stops, when all

decompression obligations have been

observed

the

display

changes

from

DECO STOP

STOP to STOP only.

DECO STOP

CNS O2%

Level stop information
If decompression stops become obligatory, the DECO symbol will be displayed. The total ascent time will now also contain a decompression stop.
Time

Depth

L0

L5

3m/10ft

Deco stop duration Level stop duration

MB level

L0

DECO STOP

L5

DECO STOP STOP

NO STOP STOP

NO STOP

Level stop duration Decompression stop depth = level stop depth

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6. Diving with microbubble (MB) levels
6.5 Complete a dive with MB levels
S L O W
A dive with MB levels is completed the same way as a dive without MB levels (L0) (->29), save for the following exceptions:
If the MB level has been reduced during the dive, Aladin 2G will display a flashing MB level symbol and the current MB level for five minutes after reaching the surface. The dive is then completed and Aladin 2G changes to user mode with the MB level switching back to the original MB setting.
Repetitive dives and MB levels: If during a dive a level stop is being ignored and the diver starts another descent shortly afterwards, Aladin 2G might immediately request level stops. To complete the dive with the initially set MB level all level stops must be observed.

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7. PDIS (Profile Dependent Intermediate Stop)

PDIS

(PROFILE DEPENDENT INTERMEDIATE STOP)

7.1 Introduction to PDIS (Profile-Dependent Intermediate Stop)
The main purpose of a dive computer is to track your nitrogen uptake and recommend a safe ascent procedure. Diving within the so called no-stop limits means that at the end of the dive you can ascend directly to the surface, albeit at a safe ascent rate, while for dives outside of the no-stop limit (so-called decompression dives), you must perform stops at certain depths below the surface and allow time for excess nitrogen to be expelled from your body before finishing the dive.
In both cases, it can be beneficial to stop for a few minutes at an intermediate depth between the maximum attained depth during the dive and the surface or, in case of a decompression dive, the first (deepest) decompression stop.
An intermediate stop of this kind is beneficial as soon as the ambient pressure at that depth is low enough to ensure that your body is predominantly offgassing nitrogen, even if under a very small pressure gradient. In such a situation, you can still cruise along the reef and enjoy the dive, while your body gets a chance to slowly release nitrogen.
In recent times, so called “deep” stops have been introduced in some dive computers and tables, defined as half the distance from the maximum reached depth and the surface (or the lowest decompression stop). Spending 2 or 15 minutes at 30m/100ft would result in the same deep stop of 15m/50ft. With PDIS, as the name suggests, Aladin 2G interprets your dive profile and suggests an intermediate stop that is a function of your nitrogen uptake so far. The PDI stop will therefore change through the course of the dive to reflect

the continuously changing situation in your body. Along the same lines, PDIS will account for the accumulated nitrogen from previous dives, hence PDIS is also repetitive-dive dependent. Conventional deep stops completely ignore these facts.
The following figure quantifies the extent of PDIS and illustrates its dependence on cumulative nitrogen uptake for two sample dive profiles. This figure also demonstrates the conceptual difference between PDIS and the rather rudimental “deep” stops.
Specifically, the figure compares two dive profiles to a maximum depth of 40m/132ft but otherwise very different. Profile 1 stays at 40m/132ft for 7 minutes, then ascends to 30m/100ft for 3 minutes, followed by 12 minutes at 20m/65ft. Profile 2 stays less than two minutes at 40m/132ft, then ascends to 21m/69ft and stays there for 33 minutes. Both dive profiles are no-stop dives to the limit of entering decompression. The solid line with triangles represents the PDIS depth as displayed on the computer screen during the course of the dive for profile 1, the dotted line with triangles represents the PDIS depth as displayed on the computer screen during the course of profile 2. One can see that the displayed PDIS depth increases as more nitrogen is accumulated in the body, but does so very differently in the two dives due to the different exposure in the two profiles. The PDI stop is carried out at 25 minutes for profile 1 and at 37 minutes for profile 2, followed by the safety stop at 5m/15ft.
The solid line with open circles on the other hand represents the depth that would be displayed by a computer following the conventional deep stop method, and it would be the same for the two dive profiles. Deep stops completely ignore any facts about the dives themselves aside for the max depth.

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7. PDIS (Profile Dependent Intermediate Stop)

English

7.2 How does PDIS work?
The mathematical decompression model in Aladin 2G, called ZH-L8 ADT MB PMG, tracks your decompression status by dividing your body into 8 socalled compartments and mathematically following the uptake and release of nitrogen in each with the appropriate laws of physics. The various compartments simulate parts of your body such as central nervous system, muscles, bones, skin and so on.
The depth of the PDI stop is calculated as that at which the leading compartment for the decompression calculation switches from ongassing to offgassing, and the diver is advised to perform a 2-minute stop above the displayed depth (this is the opposite of a decompression stop, where you are asked to remain just beneath the displayed depth). During this intermediate stop, the body is not taking up any more nitrogen in the leading compartment, but rather releasing nitrogen (though under a very small pressure gradient). This,

combined with the relatively high ambient pressure, inhibits bubble growth.
It should be noted that the two fastest compartments, with 5 and 10 minutes half times respectively, are not considered for the determination of the PDI stop depth. This is due to the fact that these compartments are only “leading” for very short dives, for which an intermediate stop is not required at all.
) NOTE:
The PDI stop is not a mandatory stop and it is NOT a substitute for the 3-5 minute safety stop at 5m/15ft.
WARNING
Even when performing a PDI stop, you still MUST perform a safety stop at 5m/15ft for 3 to 5 minutes. Performing a 3 to 5 minute stop at 5m/15ft at the end of any dive is still the best thing you can do for yourself!

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7. PDIS (Profile Dependent Intermediate Stop)

7.3 Special considerations when diving with more than one gas mixture (Aladin 2G)
Switching to a higher oxygen concentration mix during the dive influences the PDI stop. This needs to be accounted for, in line with the predictive nature of multigas handling in ZH-L8 ADT MB PMG.
When diving with more than one gas mixture, Aladin 2G displays the PDIS depth according to the following rules: · if the PDI stop calculated for the bottom
mix (gas 1) is deeper than the switch depth, than this calculated value is displayed; · if the PDI stop calculated for gas 1 is shallower than the switch depth to gas d, then the displayed PDI stop is a function of gas d.
In case of a missed gas switch, Aladin 2G reverts to the PDI stop for the actively breathed mix.
7.4 Diving with PDIS
) NOTE: To use the PDIS feature, you must set PDIS to ON in the PDIS menu under Set 1. The default setting is OFF.

and updates the PDIS depth accordingly to reflect the optimum at all times.
The PDIS depth is shown in the lower left corner, with the label PDIS. During a nostop dive, as soon as you reach that depth during an ascent, a 2-minute countdown will appear in place of the no-stop value with label STOP. In addition, the PDIS label will blink. You can have one of three situations: · you have spent 2 minutes within 3m/10ft
above the indicated depth. The countdown timer disappears and the PDIS value is replaced by the label YES as an indication that you have performed the PDI stop; · you have descended by more than 0.5m/2ft below the PDIS. The countdown timer disappears and will reappear again, starting at 2 minutes, the next time you ascend to the PDIS depth; · you have ascended by more than 3m/10ft above the PDIS. The PDIS value and countdown timer are replaced by the label NO to indicate the fact that you have not performed the PDI stop.
If Aladin 2G is displaying a decompression obligation when you reach the PDIS depth during an ascent, all rules apply the same way, but the 2-minute countdown runs in the background and is not displayed on the screen. The PDIS label however will still be blinking to show you that you are in the PDIS range.

When the calculated PDI stop is deeper than 8m/25ft, Aladin 2G shows it on the display and continues to do so until you reach the displayed depth during an ascent. The displayed value changes during the dive as Aladin 2G tracks the uptake of nitrogen in the 8 compartments
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7. PDIS (Profile Dependent Intermediate Stop)
) NOTE: Aladin 2G issues no warnings relating to a missed PDI stop. When diving with MB levels, PDIS follows the same rules as described above. MB levels, however, introduce stops earlier and deeper than the L0 base algorithm. As such, the PDIS display may be delayed and for certain dives it may not be displayed at all. This for instance would be the case for a shallow dive with air (21% oxygen) and MB level L5.

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8. Diving with two gas mixtures

DIVING WITH TWO GAS MIXTURES

Time

Depth

d

Switching depth

(MOD gas d)

1

d

Bottom mix (gas 1)

Deco mix (gas d)

) NOTE: The following chapter deals with the characteristics of diving with two gases.
Aladin 2G enables you to use two different Nitrox mixtures during the same dive. Tank 1 contains the bottom mix (gas 1) and tank d contains the deco mix (gas d).
Switching the deco gas option on and off In order to enable two-gas diving you must turn on the deco gas option in the SET 1 menu ->60.
Setting the gas mixture and the depth for changing the gas mixture
O2 fraction

During dives with two gas mixtures the bottom mix (gas 1) contains the lower fraction of oxygen. Aladin 2G will only accept settings corresponding with this order.
WARNING
For gas mixtures having an oxygen percentage of 80% or greater the ppO2 is fixed at 1.6bar and cannot be altered in any way.

100%
1d

21% Range of O2 fraction

Depth for change of gas mixture, MOD
ppO2 max
Procedure: 1. Enter the setting for the fraction of oxy-
gen and the ppO2 max (MOD) for gas 1

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8. Diving with two gas mixtures

(bottom mix) according to the instructions on page 21 (points 1-6). 2. Repeat the process in the Gas d O2 menu to set the oxygen fraction and ppO2 max for gas d. Note that in this case the resulting MOD corresponds to the depth at which you plan to switch from gas 1 to gas d during the ascent phase (switch depth). 3. If you set gas d to “­ ­ O2%”, Aladin 2G will compute the dive considering gas 1 only.
Aladin 2G will only accept a gas switch depth (MOD gas d) as input where the maximum partial pressure of oxygen (ppO2 max), as pre-set manually (->21 point 5) or by means of SmartTRAK, is not exceeded.

) NOTE:

· During the ascent an audible and

visual attention message will indicate

that you have reached the depth

which requires the change to gas d

->52.

· Without confirmation with

the

display will disappear after 3 minutes

and your entries will not be accepted.

· If the deco gas option is turned on

and the oxygen fraction of gas d is

set to a value other than “–O2%”, in surface mode and up to a depth of

0.8m Aladin 2G will display “2G” in

the lower right corner of the display

instead of a percentage value.

) NOTE: · The time to reset the O2% mix to air can be set with SmartTRAK between 1 hour and 48 hours or to “no reset” (default). After the reset, the oxygen fraction of gas 1 is set to 21% and gas d is set to “­ ­ O2%” (single gas dive).

Switching between single-gas and two-gas diving If gas d is not going to be used during the next dive you can either set it to “­ ­ O2%” (->48, point 2) or you can turn off the deco gas option in SET 1. When you turn off the deco gas option in SET 1, the setting in the Gas d O2 menu remains but Aladin 2G calculates the dive using gas 1 only. If the deco gas option is turned off, the GAS d O2 menu will display OFF in the lower left corner (instead of an MOD) and the ppO2 setting will not appear.
Functions during a dive with two gas mixtures
WARNING
Diving with more than one gas mixture represents a much higher risk than diving with a single mixture, and mistakes by the diver may lead to serious injury or death. During dives with several gas mixtures, always make sure you are breathing from the tank you intended to breath from. Mark all your tanks and regulators, so they can under no circumstances be mixed up! Before every dive and after changing a tank, make sure that each gas mixture is set to the correct value for the corresponding tank.
Predictive decompression prognosis The calculation of decompression data is based on the assumption that the change of gas mixture will be performed at the previously selected switch depth (MOD gas d). If a diver ignores the required change or changes the mixture belatedly, Aladin 2G will readjust the decompression calculation accordingly. In case of an ignored switch the dive computer will then base its calculations on the assumption that the diver will ascend to the surface with gas 1.
Alternate displays during a dive with two gases
) NOTE: All displays time out after 5 seconds and the default display is shown again. (Only exception is the temperature, screen 2 below.)

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8. Diving with two gas mixtures
1 The default display shows the predictive decompression prognosis, which assumes the diver will switch to the deco gas at the specified switch depth. In the bottom left corner the temperature is displayed unless the current depth is 1m/3ft shallower than the max depth, in which case the max depth is displayed.
2 Upon pressing the right button, the temperature and the current O2% are shown in the lower row. O2% will time out after 5 sec while the temperature remains.
3 Upon pressing the right button, “GAS 1” or “GAS d” appears in the middle row to indicate the currently active gas and the MOD appears in the bottom left corner. “GAS 1” or “GAS d” will time out after 5 seconds unless the right button is pressed again.
4 In case that gas 1 is the active gas, pressing the right button one more time shows O2% of gas 1 in the bottom right corner and the decompression information in case the deco gas is not used (decompression information relative to gas 1 only). This is the calculation that Aladin 2G would switch to in case, having reached the switch depth, the diver did not confirm the switch. The decompression information and the O2% blink.
5 If an MB level greater than L0 is active, pressing the right button one more time shows the predictive decompression information and in the bottom left corner the currently active MB level.
6 Pressing the right button again shows the predictive decompression information relative to L0 together with the L0 symbol at the bottom left.
7 One more right button push shows the decompression information relative to L0 if only gas 1 is used, with the decompression information and the O2% of gas 1 blinking.
8 Upon pressing the right button again, the time of day appears in the middle row.
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8. Diving with two gas mixtures

Gas 1 active, MB level L0

1 DEPTH

DIVE TIME

2 DEPTH

DIVE TIME

3 DEPTH

DIVE TIME

4 DEPTH

DIVE TIME

8 DEPTH

DIVE TIME

DECO STOP

C SO

DECO STOP

Max depth CNS O2%
Predictive decompression information

Temperature
O2 mix of the currently active
tank

MOD gas 1

Gas d active, MB level L0

DECO STOP

Decompression information assuming that you finish the dive with gas 1

Time
O2 mix gas 1

1 DEPTH

DIVE TIME

2 DEPTH

DIVE TIME

3 DEPTH

DIVE TIME

8 DEPTH

DIVE TIME

DECO STOP

C SO

DECO STOP

Max depth

CNS O2%

Predictive decompression
information

Temperature
O2 mix of the currently
active tank

Gas 1 active, MB level L1-L5

1 DEPTH

DIVE TIME

2 DEPTH

DIVE TIME

MOD gas d

3 DEPTH

DIVE TIME

DECO STOP

C SO

DECO STOP

Max depth Predictive

CNS O2% decompression

Temperature
O2 mix of the currently active

information relative to tank

active MB level

MOD gas 1

Time

4 DEPTH

DIVE TIME

DECO STOP

Decompression information assuming that you finish the dive with
gas 1

O2 mix gas 1

5 DEPTH

DIVE TIME

6 DEPTH

DIVE TIME

7 DEPTH

DIVE TIME

8 DEPTH

DIVE TIME

DECO STOP

DECO STOP
S L O W

Active MB level
Predictive decompression information relative
to active MB level

Predictive decompression information
relative to L0

Gas d active, MB level L1-L5

1 DEPTH

DIVE TIME

2 DEPTH

3 DEPTH

DIVE TIME

DECO

STOP

1

Decompression information relative to L0, assuming that you
finish the dive with gas 1

Time

5 DEPTH

DIVE TIME

6 DEPTH

1
DIVE TIME

8 DEPTH

DIVE TIME

DECO STOP

C SO

DECO STOP

DECO STOP

Max

Temperature MOD gas d Active MB

depth CNS O2%

level

Predictive

O2 mix of the

Predictive

decompression

currently active decompression

information relative

tank information relative

to active MB level

to active MB level

DECO STOP
S L O W
Predictive decompression information relative to L0

Time

SCUBAPRO ALADIN 2G

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8. Diving with two gas mixtures

Changing the gas mixture Switch depth 4s

DEPTH

DIVE TIME
NO

S L O W

Switch to gas d MOD gas d After immersion, Aladin 2G automatically selects gas

1. WARNING
   When during an ascent the switch depth is reached (MOD gas d), an audible warning goes off and “GAS d”, its MOD and O2% blink for 30 seconds.

Procedure: 1. Switch to the regulator with gas d and
start breathing. 2. Confirm the change by pressing
within 30 seconds. “GAS d” and the oxygen fraction of gas d is displayed for 5 seconds without blinking.

To interrupt the switch process at any

point, press

.

DEPTH

DIVE TIME
NO

S L O W
Change to gas d confirmed

No change of gas mixture:

If a diver fails to confirm the change of

gas mixture or interrupts the switching

procedure by pressing

, Aladin 2G

displays “GAS 1”, the MOD and the oxygen

fraction for 5 seconds. Aladin 2G continues

to calculate with gas 1 only and adapts the

decompression calculation accordingly.

) NOTE: If after the decompression calculation has readjusted itself to reflect the failed switch the diver goes again below the switch depth (MOD of gas d), Aladin 2G will revert to the decompression calculation that considers gas d also, since upon ascending again the diver will have a renewed opportunity to perform the switch once the switch depth is reached.

DEPTH

DIVE TIME

NO

S L O W

Failed or interrupted switch

MOD gas 1

Belated change of gas mixture:

A diver can catch up on a required change

to gas d until he reaches the surface.

1. Initiate the switching process by press-

ing

. Aladin 2G displays “GAS d”,

MOD and the oxygen fraction of gas d

blinking for 30 seconds.

2. Switch to the regulator with the deco

gas mixture and start breathing.

3. Confirm the change by pressing

. “GAS d” and the oxygen fraction of

the deco gas is displayed for 5 seconds

without blinking. The decompression

calculation will readjust accordingly.

(Press

to interrupt the switch

process at any time.)

52

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Submerging again after a change to

gas d:

If after a change to gas d the Maximum

Operating Depth (MOD) of gas d is

exceeded, the ppO2 max warning will appear ->25.

Change back to gas 1, which is suited

for this depth, or rise to the Maximum

Operating Depth of gas d. Failure to do so

can result in oxygen poisoning.

1. Initiate the switching process by press-

ing

. Aladin 2G displays “GAS 1”,

MOD and the oxygen fraction of gas 1

for 30 seconds.

2. Switch to the regulator with gas 1 and

start breathing.

3. Confirm the change by pressing

.

“GAS 1” and the oxygen fraction of gas

1 is displayed for 5 seconds without

blinking. Afterwards the decompression

calculation will readjust accordingly.

8. Diving with two gas mixtures

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53

9. Dive planner

DIVE PLANNER

Aladin 2G has a dive planner which allows the planning of no-stop dives and decompression dives. Basis of the planning: · selected fraction of oxygen and MOD · selected water type · selected MB level · water temperature of the most recent
dive · altitude range (if any) · status of saturation at the time the dive
planner is selected

· assuming a normal workload of the diver and observance of the prescribed ascent rates
· assumption: the change to gas d is performed at the selected MOD of gas d.

9.1 Planning a no-stop dive

To select the dive planner Aladin 2G must

be in user mode (time of day display).

Push

or

until the symbol for the

dive planner PLn appears. (The dive planner

cannot be selected in gauge mode.)

Select dive planner or
until PLn

The no-dive warning and its duration are displayed if Aladin 2G detects an increased risk due to the accumulation of microbubbles.

NO

No-dive warning

(Do Not Dive)

if

Duration of the warning

Enter the dive Dive planner symbol planner

if rep. dive

CNS O2%

Input of the surface interval by

pushing

/

No-stop time or MB no-stop time

DEPTH

DIVE TIME

NO STOP CNS O2%

CNS O2%

Set desired depth

(

and

)

Icon for MB level L1-L5

Enter the dive planner with

.

The input window for the time interval is displayed if there

was a remaining desaturation (DESAT) before the dive

planner has been selected. This surface interval between

now and the beginning of the dive can be changed with

and

in steps of 15 minutes. Aladin 2G displays

the CNS O2% value and the altitude section to which you may not rise at the end of the selected surface interval.

If the no-dive warning and its duration has been displayed, Aladin 2G proposes this time ­ rounded up to the next 15 minutes ­ as surface interval. If the proposed interval is shortened, the no-dive warning appears.

54

SCUBAPRO ALADIN 2G

English

9. Dive planner

Confirm the displayed interval with

(if

applicable).

With

and

set the depth for

which you want to know the no-stop time.

If an MB level has been selected (L1L5), the MB no-stop time is shown.

Depths deeper than the MOD for the selected gas (O2 mix) are not displayed.
If the deco gas option is turned on, only the depth between the MOD of gas 1 and the MOD of gas d are displayed. On page 30 you will find further information and safety considerations regarding the no-dive warning.

9.2 Planning a decompression dive

DEPTH

DIVE TIME

NO STOP
CNS O2%

DEPTH

DIVE TIME
NO

DECO STOP

CNS O2%

Set desired bottom time with and

3. “Add” asks that you set the bottom

time. This is done with

and

.

Aladin 2G calculates the decompression

information for this set bottom time. If

an MB level (L1-5) is selected, Aladin 2G

calculates the level stop data.

CNS O2% values higher than 199% will be displayed as 199 %. Ascent time greater than 99 minutes is displayed as ” ­ ­ ” Deco stop depth deeper than 27m (90ft) is displayed as ” ­ ­ : ­ ­ ” CNS O2 equal or greater than 75%: CNS O2% symbol starts flashing CNS O2 equal or greater than 100%: CNS O2% symbol and CNS O2% value are flashing. MB level stop deeper than 27m (90ft): MB level will be reduced.

Confirm the desired depth with

1. Activate the dive planner for a no-stop

dive ->54.

2. Set the desired depth with

and

, then switch into decompression

planning by pushing

. Aladin 2G

shows the bottom time (no-stop

time + 1 minute) and the appropriate

decompression information or level stop

data respectively.

9.3 Leaving the dive planner

By pushing once or twice

you can

exit the dive planner. This also occurs after

three minutes without operation.

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55

10. Logbook

LOGBOOK

10.1 Survey
A dive is entered in the logbook if the dive time is longer than 2 minutes. Aladin 2G records the profiles of about 25 hours of diving. In Apnea mode all dives are entered in the logbook without time limit and at least 6h of Apnea profiles will be stored. This information can be transferred to a PC with the standard infrared interface (IrDA) and the Windows® software SmartTRAK. All dives in the memory can be displayed directly on the dive computer.

10.2 Operation

From the time of day display you can

select the logbook with

.

until

Surface interval

Logbook icon Max depth
DEPTH

Dive time
DIVE TIME

S L O W
Dive number
Date of the dive

Battery performance

O2 mix

From here you can:

a) get more information about the

displayed dive by pushing (see

below, “page 2”). Aladin 2G displays

further information about the selected

dive.

b) select other dives.

Each time you push

or

causes a jump to the next or previous

dive.

At the end of the logbook Aladin 2G

displays statistic information ->57.

Page 2

Altitude range (if >0)

Repetitive dive number

If there was a remaining desaturation time (DESAT) before selecting the logbook, the time since the last dive (surface interval) is displayed.

Page 1

With

you enter the logbook.

The most recent dive is displayed (dive

number 1).

There are 3 pages for each dive.

Minimum temperature

CNS O2%
CNS value at the end of the dive
Starting time

Push

to get more information about

the dive.

56

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English

10. Logbook

Page 3

If a dive is started within adaptation time

(after a change of altitude), the adaptation

time is displayed instead of the surface

interval.

Duration of surface

SOS if applicable

interval (only with repetitive dives)

MB level (at the beginning of the dive)

O2 mix deco gas (if a switch has taken place
during the dive)

Further possible information about the dive:

S

L O

Too fast ascent* (page 1)

W

DECO Ignored decompression stop* STOP (page 1)

Ignored decompression stop* (page 3)

Diving in SOS mode (gauge mode) (page 3)

Altitude range (page 2)

MB level dive (L1-L5) (page 3)

STOP Ignored MB level stop* (page 1)

DESAT

Desaturation was reset before the dive (in “set 1”) (page 1, 2)

Desaturation was reset before the dive by removing the battery DESAT (page 1, 2)

Battery quality factor has been 3 bars or less during the dive (page 1, 2, 3)

Diving in gauge (page 1, 2, 3)

AVG

Average depth (gauge mode) (page 3)

No-dive warning after the dive (page 1)
Apnea mode dive (page 35)
*Alarms during the dive

gets you back to the dive list (first

level screen within logbook). From here you

can advance to the next dive of interest and

press

to retrieve more information

about that dive etc.

Statistic information

From the time of day display you can get

the following statistic information over all

dives. Push

,

and

:

Deepest dive

Longest dive

DEPTH

DIVE TIME

S L O W
Cumulative bottom time
Number of dives

Leaving the logbook

By pushing once or twice

you can

exit the logbook.

The logbook closes automatically after

3 minutes without operation.

SCUBAPRO ALADIN 2G

57

11. Settings

SETTINGS

11.1 Altitude adjustment
The altitude adjustment does not affect altitude ranges nor any calculations.

Adjust the altitude indication to your current

altitude.

1. Starting from the time of day display

push

or

until the mountain

symbol and the altitude appear.

2. Confirm that you wish to change the

displayed altitude by pushing

.

The altitude starts to flash.

3. Change the altitude in increments of

10m / 50ft by pushing

or

.

4. Confirm the selected altitude with

.

11.2 Menu “set 1”
With menu “set 1” or SmartTRAK you can configure the following items (dive functions):

Setting

Range

Default

Page

· Depth alarm

5 – 100m (20 – 330ft) on/off 40m (130ft),off 58

· Dive time alarm

5-195min, on/off

40m (130ft),off 59

· Safety stop duration

1-5min

3 minutes

59

· Maximum partial pressure of

oxygen (ppO2 max)

1.2-1.6bar

1.4bar

59

· Time limit to reset the O2% mix no reset / 1 – 48hrs

no reset

59

to air

· Deco gas

on/off

off

60

· PDIS (Profile Dependent

on/off

off

60

Intermediate Stop)

· Unit system

metric/imperial

60

· Water type

on (salt water)/off (fresh

on (salt water) 60

water)

· Backlight illumination duration 2-12s ; push on / push off 6s

61

· Audible attention signals

on / off (SmartTRAK:

on

61

selective)

· Water contacts

on / off

on

61

· Reset desaturation

on / off

no reset

62

Setting the depth alarm

NO

DEPTH

DIVE TIME

Starting from the time of day display push

or

until “set 1” appears.

Confirm that you wish to enter into the menu

of “set 1” by pushing

.

Once entered into the menu you can scroll

with

and

through the menu.

Status

Alarm depth

58

SCUBAPRO ALADIN 2G

English

11. Settings

1. Confirm that you wish to change the

depth of the alarm or to switch it on or

off by pushing

. The depth starts

to flash.

2. Change the depth in increments of

1 m/5 ft by pushing

or

.

3. Confirm the selected depth with

.

“On” or “Off” starts to flash.

4. “On” indicates “activated”, “Off”

indicates “deactivated”.

switches between “On” and “Off”.

Confirm the selected status with

.

See also page 23.

Setting the dive time alarm

DEPTH

DIVE TIME

1. Confirm that you wish to change the

duration of the safety stop by pushing

. The duration starts to flash.

2. Change the duration in increments of

1 minute or to off (inactive) by pushing

or

.

3. Confirm the selected duration with

.

Setting the maximum partial pressure of oxygen (ppO2 max)

Status

Alarm time

1. Confirm that you wish to change the

time of the dive time alarm or to switch

it on or off by pushing

. The alarm

time starts to flash.

2. Change the alarm time in increments of

5 minutes by pushing

or

.

3. Confirm the selected alarm time with

. “On” or “Off” starts to flash.

4. “On” indicates “activated”, “Off”

indicates “deactivated”.

Switch between “on” or “off” by

pressing

.

Confirm the selected status with

.

See also page 23,23.

Setting the safety stop duration

ppO2 max

1. Confirm that you wish to change the

ppO2 max by pushing

. The cur-

rent value starts to flash.

2. Change the value in increments of

0.05bar by pushing

or

.

3. Confirm the selected value with

.

The ppO2 max setting is valid for gas 1 and the deco gas.

Setting the time limit to reset the O2% mix to air

Time limit to reset O2 mix to air

1. Confirm that you wish to change the

time limit of the reset by pushing

.

The current setting starts to flash.

2. Change the time limit by pushing

or

.

(1 – 48hrs or no reset: “­ ­ h”)

3. Confirm the selected value with

.

Duration of the safety stop

SCUBAPRO ALADIN 2G

59

11. Settings Enabling two-gas diving

Selecting the units

1. Confirm that you wish to enable two-

gas diving by pushing

. “On” or

“off” starts to flash.

“On” indicates the deco gas is active,

“off” indicates that only gas 1 will be

used for decompression calculations.

2. Switch between “on” and “off” with

.

3. Confirm your choice with

.

PDIS (Profile Dependent Intermediate Stop)

1. Confirm that you wish to change the

units by pushing

. The selected

units are displayed (m / ft / °C / °F).

2. Push

. “m” or “ft” starts to flash.

3. Switch with

between “m” and “ft”.

4. Confirm the selected unit with

.

“°C” or “°F” starts to flash.

5. Switch with

between “°C” and

“°F”.

6. Confirm the selected unit with

.

Selecting the water type

1. Confirm that you wish to enable PDIS

by pushing

. “On” or “off” starts to

flash.

“On” indicates that the PDIS timer will

be automatically activated during the

dive, “off” indicates that PDIS will be

inactive.

2. Switch between “on” and “off” with

.

3. Confirm your choice with

.

1. Confirm that you wish to change the

selected water type by pushing

.

“On” or “off” starts to flash.

“Salt on” indicates salt water, “salt off”

indicates fresh water.

2. Switch with

between “salt on”

and “salt off”.

Confirm the water type with

.

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Setting the backlight duration

11. Settings
Switching the water contacts on and off

1. Confirm that you wish to change the

duration of the backlight illumination by

pushing

. The value starts to flash.

2. Change the duration with

. (2-12s

or push on / push off)

3. Confirm it with

.

Switching the audible attention signals on and off

On submerging in water the water contacts switch on Aladin 2G automatically.
WARNING
If you chose the option “Water contacts off”, Aladin 2G will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.

1. Confirm that you wish to change the

setting of the water contacts by pushing

. “On” or “off” starts to flash.

2. Switch between “on” or “off” by press-

ing

.

3. Confirm the setting with

.

With this option you can switch off the

audible attention signals only (the audible

alarms remain active). Refer to page 20 to

see this distinction.

1. Confirm that you wish to change the

setting of the audible attention signals

by pushing

. “On” or “off” starts to

flash.

2. Switch between “on” or “off” by press-

ing

.

3. Confirm the setting with

.

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61

11. Settings

Resetting the remaining saturation
WARNING
Diving after a reset of the remaining saturation may lead you into potentially hazardous situations which could result in death or serious injury. After a reset of the remaining saturation do not dive for at least 48 hours. If you dive after resetting the remaining saturation the computer will miscalculate your decompression, which may result in serious injury or death. Reset the remaining saturation only if you know you will not be diving, flying or going to higher altitude for the next 48 hours.
Resetting the desaturation should only be done when there is a valid reason, e.g. loaning the computer to somebody who has not dived in 48 hours or more. When the computer itself has remaining saturation you must assume full responsibility for the consequences of resetting the remaining saturation.

4. Set the first digit by pushing

and

. Confirm with

.

Repeat point 4 for the next 2 digits. If you entered the right code the desaturation will be reset to zero (desat off). Code: 313

DESAT

DESAT

1. Confirm that you wish to reset the

displayed saturation by pushing

.

“On” starts to flash.

2. Switch between “on” or “off” by press-

ing

.

3. Confirm the setting with

. If you

have selected “off”, “Code” and “000”

appear.

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11. Settings

11.3 Menu “set 2”

With menu “set 2” or SmartTRAK you can configure the following items:

Setting

Range

Default

· Alarm clock

0 – 23h 59min, on/off

· UTC (Universal Time Change) ±13hrs, increments: 15min

zone

· Time of day

hours:minutes

· 24 or AM/PM setting

24 (off) / AM/PM (on)

· Date

· Display contrast

1 (low) -12 (high)

· IrDA speed setting (only “set 2”) low / high

· Sound

on / off

· Show Aladin 2G electronic ID

12:00, off
4 low on

Page
63 63
64 64 64 64 65 65 65

NO

Starting from the time of day display push

or

until “set 2” appears.

Confirm that you wish to enter into the

menu of “set 2” by pushing

.

Once entered into the menu you can scroll

with

and

through the menu.

Setting the alarm clock time

6. “On” indicates “activated” (time of day

display shows ), “off” indicates

“deactivated”.

Switch between “on” or “off” by press-

ing

.

7. Confirm the selected status with

.

Setting the UTC offset (coordinated universal time)

The alarm clock goes off only at the surface.

“Sound” must be turned “on” in “set 2”.

1. Confirm that you wish to set the alarm

time by pushing

.

The hours start to flash.

2. Set the hours by pushing

or

.

3. Confirm the setting with

. The

minutes start to flash.

4. Set the minutes by pushing

or

.

5. Confirm the setting with

. “On” or

“off” starts to flash.

This setting allows you to quickly set the

watch to a new time zone without affecting

the actual time setting.

1. Confirm that you wish to set the UTC

offset by pushing

.

The hours start to flash.

2. Set the hours by pushing

or

(±13hrs).

3. Confirm the setting with

. The

minutes start to flash.

4. Set the minutes in increments of

15 minutes by pushing

or

.

5. Confirm the selected status with

.

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63

11. Settings Adjusting the time of day

Adjusting the date Date (24h setting)

Time of day

You can adjust it to your time zone either

in this menu or using the UTC offset (see

above).

1. Confirm that you wish to adjust the time

of day by pushing

.

The hours start to flash.

2. Set the hours by pushing

or

.

3. Confirm the setting with

. The

minutes start to flash.

4. Set the minutes by pushing

or

.

5. Confirm the setting with

.

Selecting 24 hours or AM/PM setting

Day / Month / Year Date (AM/PM setting)

Month / Day / Year

1. Confirm that you wish to adjust the date

by pushing

.

The first day (month) starts to flash.

2. Set the day (month) by pushing

or

.

3. Confirm the setting with

. The

month (day) starts to flash.

4. Set the month (day) by pushing

or

.

5. Confirm the setting with

. The year

starts to flash.

6. Set the year by pushing

or

.

7. Confirm the setting with

.

Adjusting the display contrast

1. Confirm that you wish to change the

setting by pushing

. “On” or “off”

starts to flash.

2. Switch with

between “on” (AM/

PM) and “off” (24h).

3. Confirm the setting with

.

The 24h – AM/PM setting influences the display of the date (see below).

1. Confirm that you wish to adjust the

display contrast by pushing

.

The current setting starts to flash.

2. Set the contrast by pushing

or

.

Low contrast: (1), high contrast: (12)

3. Confirm the setting with

.

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11. Settings

Selecting the IrDA speed

The default setting is low. For faster

downloads you can set it to high, but not all

IrDA interfaces are compatible with high.

1. Confirm that you wish to change the

IrDA speed by pushing

. “Lo” (low)

or “hi” (high) starts to flash.

2. Switch with

between low and

high.

3. Confirm the setting with

.

Low: 9600 bits/second

High: max 57 600 bits/second

Switching the sound on and off

WARNING
If you turn off the sound, the buzzer is effectively deactivated. You will have no audible warnings (alarms and attention messages)! Without audible warning you could get into potentially hazardous situations, which could result in death or serious injury. You must assume full responsibility for turning off the sound.

1. Confirm that you wish to change the

setting by pushing

. “On” or “off”

starts to flash.

2. Switch with

between “on” and

“off”.

3. Confirm the setting with

. If you

have selected “off”, “Code” and “000”

appear.

4. Set the first digit by pushing

and

. Confirm with

.

Repeat point 4 for the next 2 digits. If you entered the right code the sound will be turned off. Code: 313

) NOTE: Setting the “sound” to “off” applies also to surface functions (mountain alarm, wake-up alarm, change of altitude range).

Showing the hardware electronic ID of Aladin 2G

NO

ID Number
This number is needed when reporting problems or for other maintenance related issues.

SCUBAPRO ALADIN 2G

65

11. Settings

11.4 Menu “set 3” (Apnea)

With menu “set 3” or SmartTrak you can configure the following items:

Setting

Range

Default Page

Dual Depth alarm

5-100m, 5-100m,
on/off

10m (35ft), off 66 20m (65ft), off

Incremental 5-100m, 5.0m (20ft), off 66 depth alarm dn(down)/ up/
bth(both)/off

Dive time interval warning

15s-10min, on/off

30s, off

66

Surface interval warning

15s-10min, on/off

1 min, off 67

Ascent speed alarm

0.1-5 m/s, (1-15 ft/s)
on/off

1 m/s (3 ft/s), 67 off

Water 1.000-1.050 1.025 kg/l 67

density

kg/l

(Fresh water ~1.000, Ocean ~1.035)

Starting from the time of the display push

or

until “set 3” appears.

pushing

. First depth value starts

to flash.

2. Scroll first depth with

or

.

3. Confirm the first depth alarm with

.

Second depth alarm starts to flash.

4. Scroll second depth with

or

.

5. Confirm the second depth alarm with

. On/off starts to flash.

6. Switch between on/off with

.

7. Confirm the setting with

.

Setting the incremental depth alarm

With this alarm you can set repetitive depth

alarms at given depth increments.

1. Confirm that you wish to change the

settings of the incremental depth alarm

by pushing

. Increment value

starts to flash.

2. Scroll value with

or

.

3. Confirm the increment with

. Up/

Down/Both/Off starts to flash.

4. Switch between Up/Down/Both/Off with

.

5. Confirm the setting with

.

Setting the dive time interval warning

Confirm that you wish to enter into the

menu of “set 3” by pushing

.

Once entered into the menu you can scroll

with

and

through the menu.

Setting the Dual Depth alarm

With this alarm you can set two independent depth alarms.
1. Confirm that you wish to change the settings of the Dual Depth alarm by

With this alarm you can set time alarm that

repeats on given intervals.

1. Confirm that you wish to change the

settings of the dive time interval warning

by pushing

. Interval value starts to

flash.

2. Scroll time value with

or

.

3. Confirm the interval time with

. On/

off starts to flash.

4. Switch between on/off with

.

5. Confirm the setting with

.

66

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11. Settings

Setting the Surface Interval warning

Setting the Water Density

English

With this alarm you can set a time for

recovery or start time for repetitive dive

when training against given tables.

1. Confirm that you wish to change the

settings of the Surface Interval warning

by pushing

. Time value starts to

flash.

2. Scroll time value with

or

.

3. Confirm the surface time with

.

On/off starts to flash.

4. Switch between on/off with

.

5. Confirm the setting with

.

Setting the Ascent Speed alarm

With this setting you can get optimized accuracy on depth reading when you know the salinity of the water.

1. Confirm that you wish to change the

settings of the Water Density by pushing

. Density value starts to flash.

2. Scroll density value with

or

.

3. Confirm the setting with

.

With this alarm you can set ascent speed

alarm.

1. Confirm that you wish to change the

settings of the Ascent Speed alarm

by pushing

. Time value starts to

flash.

2. Scroll ascent speed value with

or

.

3. Confirm the maximum ascent speed

with

. On/off starts to flash.

4. Switch between on/off with

.

5. Confirm the setting with

.

SCUBAPRO ALADIN 2G

67

12. Appendix

APPENDIX

12.1 Technical information
Operating altitude: with decompression information: sea level up to approx. 4000m (13 000ft); without decompression (gauge mode): unlimited. Max displayed depth: 120m (395ft), resolution between 0.8m and 99.9m: 0.1m, >99.9m: 1m. The resolution in feet is always 1 foot. Decompression calculation depth range: 0.8 to 120m (3 to 395ft) Maximum environment pressure: 13bar (189psi) Clock: Quartz clock, time, date, dive time display up to 199 minutes. O2 concentration: Adjustable between 21%O2 (compressed air) and 100% O2 Operating temperature: -10° to +50°C (14°F to 122°F). Power supply: CR2450, recommended brands: PANASONIC, DURACELL, RENATA, ENERGIZER, SONY, VARTA. Life of the battery: 2-3 years or 200-300 dives. Actual life of the battery depends on the quantity of dives per year, the use of the backlight and the length of the dives. In cold water the life of the battery is reduced. Not all CR2450 batteries are the same, and low quality batteries can have very short life.
12.2 Maintenance
Aladin 2G 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 ->68. To avoid possible problems with your Aladin 2G, the following recommendations will help assure that it will give you years of trouble free service:
WARNING
· Avoid dropping or jarring your Aladin 2G. · Do not allow your Aladin 2G to be exposed to
direct, intense sunlight. · Rinse your Aladin 2G thoroughly with fresh
water after each dive. · Do not store your Aladin 2G in a sealed

container; make sure there is free ventilation. · If there are problems with the water contacts, use soapy water to clean Aladin 2G and dry it thoroughly. The surface of your Aladin 2G housing can be treated with silicone grease. Do not apply grease to the water contacts! · Do not clean Aladin 2G with liquids containing solvent (apart from water). · Check the battery capacity before each dive ->16. · If the battery icon appears, replace the battery ->68. · Diving with a weak battery: Aladin 2G may stop working during the dive, service icon and error code “E3” or “E6” appear. Close the dive and replace the battery ->68. · On the surface: if service icon and error code “E3” appear, replace the battery ->68. All error codes other than E3: Aladin 2G must not be used for any further dives. Take your dive computer to an authorized SCUBAPRO UWATEC dealer.
12.2.1 Replacing the battery (Use only the original SCUBAPRO battery kit with O-ring.)
WARNING
Removing the battery clears all physiological data including saturation. This means that for a repetitive dive the computer will not compute correctly. Diving after replacing the battery when there is desaturation time left on the computer can lead to serious injury or death from decompression sickness. Change the battery only under these conditions: · After a dive if you know you will not be
diving, flying or going to higher altitude for the next 48 hours. · Before a dive if there is no desaturation time left on the computer.

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SCUBAPRO ALADIN 2G

English

12. Appendix

The change must be made with particular care in order to prevent water from seeping in. The warranty does not cover damages due to an improper replacement of the battery.

WARNING
Never touch the metal surface of the battery with bare fingers. The two battery poles must never be short circuited.
Procedure: To replace the battery you need a coin or the SCUBAPRO universal tool and a clean cloth.
WARNING
· A leaking battery cap may lead to the destruction of Aladin 2G by water seeping in or cause Aladin 2G to switch off without prior notice.
· Always open the battery compartment in a dry and clean environment.
· Only open the battery compartment to replace the battery.

SCUBAPRO universal tool
) NOTE: Protect the environment and dispose the battery properly.
WARNING
If you notice traces of seeping water, damages, or other defects on the oring, do not use Aladin 2G for further dives. Take it to an authorized SCUBAPRO UWATEC dealer for check and repair.
6. Always insert a new O-ring when you replace the battery and dispose the old O-ring. Make sure that the new O-ring is in perfect condition, and that O-ring, O-ring groove and the sealing surfaces are free of dust and dirt. If necessary, clean the parts with a soft cloth. Fit the O-ring in the O-ring groove of the battery cap.
WARNING
7. Use only an original SCUBAPRO O-ring. This O-ring is Teflon coated and does not require additional lubrication.
8. Do not lubricate the O-ring as the lubricant will chemically attack the battery cap.

1. Dry Aladin 2G with a soft towel. 2. Turn the battery cap with a coin or with
the SCUBAPRO universal tool. 3. Remove the battery cap. 4. Remove the O-ring carefully. Do not
damage the sealing surfaces. 5. Remove the battery. Do not touch the
contacts.

WARNING
9. Check the proper polarity of the battery. Aladin 2G can be damaged if you do not insert the battery correctly. Insert the new battery, with “+” pointing outwards, into the battery compartment.

SCUBAPRO ALADIN 2G

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12. Appendix

After battery replacement Aladin 2G will perform an automatic test (8s) and gives a short beep when the test is done.
Alignment circles
WARNING
10. The battery cap can be installed with a ±120° offset. The alignment circles are there to ensure proper positioning of the cap. If the rotation is stopped before alignment, watertightness may not be ensured. If the rotation is forced beyond the alignment, the cap may break. Damage to Aladin 2G due to improper placement of the battery cap is not covered by warranty.
Push the battery cap firmly down and turn it clockwise until the two circles are aligned. 11. Check Aladin 2G by switching on
->14.

12.3 Warranty
The warranty only covers dive computers which have been bought from an authorised SCUBAPRO UWATEC retailer. The warranty is given for a period of two years. Repairs or replacements during the warranty period do not increase the warranty period. In order to put forward a warranty claim: send the dive computer together with a dated receipt of the purchase to your authorised retailer or an authorised servicing point. SCUBAPRO 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 authorised by the manufacturer; · pressure

References

• scubapro.com
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