Scubapro Aladin TEC 3G User Manual

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Aladin TEC 3G

User manual

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ENGLISH

SAFETY CONSIDERATIONS

You must carefully read and understand this entire manual before using your Scubapro Aladin TEC 3G.

WARNING

Diving has many inherent risks. Even if you follow the instructions of this manual in a careful manner, it is still possible that you may be seriously injured or die from decompression sickness, oxygen toxicity or some other inherent risk of scuba with Nitrox or compressed air. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use Aladin TEC 3G.

Guidelines for the use of Aladin TEC 3G

The following guidelines for using Aladin TEC 3G are derived from the latest medical research and the recommendations of the American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness or oxygen toxicity will not occur.

• Aladin TEC 3G is designed for dives with compressed air (21% O Do not use Aladin TEC 3G for dives made with other mixed gases.

• It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not exceed 1%O

• Only use Aladin TEC 3G for diving with an independent breathing apparatus.

. An incorrect gas mixture can be lethal!

Aladin TEC 3G is not designed for long term exposures with Nitrox.

• Always observe the visual and audible alarm signals. Avoid situations of increased risk which are marked with a warning sign in this operating manual.

• Aladin TEC 3G 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 O

). Ascend and finish the dive if the CNSO2 exceeds 75%.

• Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use.

• Always check the diving limits considering the oxygen content and standard sports diving procedures (decompression sickness, oxygen toxicity).

• In accordance with the recommended maximum diving limit of all instructional agencies, do not dive deeper than 40 metres/130 feet.

• The danger of nitrogen narcosis has to be taken into consideration. Aladin TEC 3G gives no warning about this.

• On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5metres (15 feet).

• All divers using dive computers to plan dives and indicate or determine decompression status must use their own computer, which they take with them on all dives.

• If Aladin TEC 3G fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 feet) should be initiated immediately.

• Comply with the ascent rate and carry out any decompression stop required. If the computer should fail for any reason, you must ascend at a rate of 10m (30ft) per minute or less.

• On any given dive, both divers in a buddy pair must follow the most conservative dive computer for that particular dive.

• Never dive without a buddy. Aladin TEC 3G does not substitute for a dive buddy.

• Only make dives that are appropriate to your level of dive training. Aladin TEC 3G 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.

) and Nitrox (22 to 100% O2) only.

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• 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 TEC 3G! 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O

% 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 90, or battery replacement, see page 99) may lead you into potentially hazardous situations which could result in death or serious injury. After a reset of the remaining saturation do not dive for at least 48 hours.

Altitude and diving

• Do not dive at altitudes higher than 4000m (13000ft).

• After a dive do not rise to altitudes that Aladin TEC 3G prohibits via the flashing altitude range number (see page 38).

Flying after diving

• After diving, wait at least 24 hours prior to flying.

Aladin TEC 3G dive instrument is compliant with the European Union directive 2014/30/EU.

Standard EN 13319: 2000

Aladin TEC 3G dive instrument is also compliant with the European standard EN 13319: 2000 (EN 13319: 2000 – Depth gauges and combined depth and time measuring devices – Functional and safety requirements, tests methods).

6. 2013

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ENGLISH

TABLE OF CONTENTS

Guidelines for the use of Aladin TEC 3G ..............................................................1

1. Introduction .............................................................................................................6

2. System and operation ..........................................................................................10

2.1 System description ..................................................................................10

2.2 Operation ................................................................................................10

2.2.1 Push buttons ...........................................................................10

2.2.2 Water contacts .........................................................................11

2.2.3 Introduction to Scubapro LogTRAK .........................................12

2.2.4 Switching on the display .........................................................15

2.2.5 How to navigate Aladin TEC 3G at the surface .........................16

2.2.6 Checking the desaturation time ................................................16

2.2.7 Checking the surface interval ...................................................17

2.2.8 Displaying the date ..................................................................17

2.2.9 Checking the battery condition .................................................17

2.2.10 Active backlight .....................................................................19

2.2.11 Switching off the display ...........................................................19

2.2.12 Alarm clock ..............................................................................19

2.3 SOS mode ..............................................................................................20

3. Diving with Aladin TEC 3G ...................................................................................21

3.1 Terminology / Symbols ............................................................................21

3.1.1 General terminology / Display during no-stop phase .............21

3.1.2 Display during decompression phase .......................................22

3.1.3 Nitrox information (O

information) .............................................22

3.2 Attention messages and alarms ...............................................................23

3.3 Preparation for the dive ...........................................................................24

3.3.1 Setting the gas mixture and ppO

max ............................24

3.3.2 Setting the MB level ..........................................................25

3.3.3

Preparation for diving with 2 or 3 gas mixtures ....................25

3.3.4 Preparation for diving with CCR ...............................................25

3.3.5 Preparation for the dive and function check..............................26

3.4 Functions during the dive ........................................................................26

3.4.1 Immersion ................................................................................26

3.4.2 Setting bookmarks ...................................................................26

3.4.3 Dive time .................................................................................27

3.4.4 Current depth / O

% mix ..........................................................27

3.4.5 Max depth / Temperature .........................................................28

3.4.6 Ascent rate ..............................................................................29

3.4.7 Partial pressure of oxygen (ppO

max) /

Maximum Operating Depth (MOD) ...........................................30

3.4.8 Oxygen toxicity (CNS O

%) .......................................................31

3.4.9 Nitrogen loading bar graph .......................................................32

3.4.10 Decompression information ......................................................32

3.4.11 Safety stop timer ......................................................................35

3.5 Functions at the surface ..........................................................................35

3.5.1 End of a dive ............................................................................35

3.5.2 Residual nitrogen bar graph .....................................................36

3.5.3 Desaturation time, No-ﬂy time and No-dive warning ................. 36

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3.6 Diving in mountain lakes ..........................................................................38

3.6.1 Altimeter ..................................................................................38

3.6.2 Altitude ranges .........................................................................38

3.6.3 Prohibited altitude ....................................................................39

3.6.4 Decompression dives in mountain lakes ...................................40

4. Gauge mode ..........................................................................................................41

5. Apnea mode ..........................................................................................................44

5.1 Switching the Apnea mode on and off .....................................................44

5.2 Diving in Apnea mode .............................................................................45

6. Diving with microbubble (MB) levels ...................................................................46

6.1 Comparison of dives with MB level L0 and MB level L5 ...........................47

6.2 Terminology .............................................................................................47

6.2.1 Display during MB no-stop phase ............................................47

6.2.2 Display during level stop phase ................................................48

6.3 Preparation for a dive with MB levels .......................................................49

6.3.1 Setting the MB level .................................................................49

6.4 Functions during the dive with MB levels .................................................49

6.4.1 Level stop information ..............................................................49

6.4.2 Total time of ascent ..................................................................51

6.4.3 Decompression obligation ........................................................52

6.4.4 Level stop and deco stop .........................................................53

6.5 Complete a dive with MB levels ...............................................................53

7. PDIS (Proﬁle Dependent Intermediate Stop) ......................................................54

7.1 Introduction to PDIS (Proﬁle-Dependent Intermediate Stop) .....................54

7.2 How does PDIS work? ............................................................................55

7.3 Special considerations when diving with more than one gas mixture

(Aladin TEC 3G) .......................................................................................56

7.4 Diving with PDIS ......................................................................................56

Diving with 2 or 3 gas mixtures ......................................................................59

9. CCR Diving ............................................................................................................66

9.1 Preparation for the CCR dive ...................................................................66

9.1.1 Setting the ppO

and gas mixture .............................................66

9.2 Functions during a CCR dive ...................................................................69

10. Dive planner ..........................................................................................................76

10.1 Planning a no-stop dive ...........................................................................77

10.2 Planning a decompression dive ...............................................................78

10.3 Leaving the dive planner ..........................................................................79

11. Logbook .................................................................................................................80

11.1 Survey .....................................................................................................80

11.2 Operation ................................................................................................80

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12. Settings ..................................................................................................................84

12.1 Altitude adjustment ..................................................................................84

12.2 Menu “set 1” ...........................................................................................84

12.3 Menu “set 2” ...........................................................................................91

12.4 Menu “set 3” (Apnea) ...............................................................................95

13. Appendix ................................................................................................................99

13.1 Technical information ...............................................................................99

13.2 Maintenance ...........................................................................................99

13.2.1 Replacing the battery ...............................................................99

13.3 Warranty................................................................................................102

13.4 Index .....................................................................................................103

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1. INTRODUCTION

Congratulations on purchasing Aladin TEC 3G 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 TEC 3G enables you to use up to 3 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 more than 1 gas mixture is marked with

We thank you for choosing Aladin TEC 3G 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.

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 TEC 3G.

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 TEC 3G.

Danger!

or has been summarized in special chapters.

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 / 3 gas mixtures

Audible signals

4 s

Audible attention signal

Audible alarm signal

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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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Quick reference

MB level icon (input / MB level r

Curr

Max depth T MB level Maximum Operating Depth (MOD) A Dive number

Logbook icon

Time of day / Date Decompr Desaturation time (DESA Duration of no-dive war

Duration of surface interval

Level stop indicator

Decompr obligation / Ignor decompr

Decompr indicator

Icon for stopwatch and safety stop timer

Decompr Level stop duration

ession depth / Level stop depth

ent depth

ltitude sections

ession stop

ession stop duration

educed)

mix icon (input)

emperature

verage depth

Operating scheme

“->” means “more information at page”

Gas d

off

->59

Bail

->68

MB Level

CCR

L0-L5 ->46

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.

ning

PDIS icon

Gas 2

->24

SP2

ppO

->66

Dive mode selection

(Algo): deco/gauge/

Apnea icon

Gas 1

ppO

APNEA

->24

SP1

->66

->44

Setting icon

Service icon

Gauge icon

Average

depth icon

off

CCR

Altitude

adjustment

->84

• Dual Depth alarm ->96

• Incremental depth

alarm ->96

• Dive time interval

warning ->97

• Surface interval

warning ->97

• Ascent speed alarm ->98

• Water density ->98

Do not y icon

No-dive warning

Dive time / No-y 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 ppO Alarm clock icon / Infrared icon

Nitrogen loading bar (dive) Residual Nitrogen bar (surface) Desaturation

Too fast ascent

AMPM DESAT

Off

Time of day display

Set 3

->91

(Apnea)

• Alarm clock -

• UTC time zone -

• Time of day -

• 24h / AM PM -

• Date -

• Display contrast -

• IrDA speed -

• Sound on / off -

• Electronic ID -

Battery condition

O2 mix Oxygen toxicity CNS O Ascent rate

AM/PM icon Desaturation icon

Set 2

->91

• (Desat. time CNS O

• Date

->17

• Battery condition

Set 1

->84

• CCR on / off -

• Depth alarm -

• Dive time alarm -

> 92

• Safety stop duration -

> 92

• ppO2 max -

> 92

• Reset to air -

• Deco gas on / off -

> 93

• PDIS -

> 93

• Unit system -

> 94

• Sait / fresh water -

> 94

• Backlight duration -

> 94

• Attention beep on / off -> 89

> 95

• Water contacts on / off -> 90

• Reset desaturation -

% ) ->16

->17

Dive

Logbook

planner

->76

See also page 16

->80

> 85

> 86

> 87

> 88

> 90

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System and operation

ENGLISH

Display switched off

()

Gas d O2%

Oxygen

–

concentration

+ –

Conrmation Conrmation

Bail O2%

Oxygen

–

concentration

+ –

Conrmation Conrmation

ppO2 max

ppO

Gas 2 O2%

Oxygen

–

concentration

ppO2 max

–

Conrmation

SP2 ppO

ppO2

–

max

Conrmation

Gas 1 O2% Diveplanner

CCR

off

Oxygen

–

concentration

ppO2 max

–

SP1 O2% and ppO

Oxygen

–

concentration

ppO2

–

Logbook

Page 1

DEPTH

Max depth

Date of the dive

Dive number

–

Page 2

Altitude range (if>0)

Minimum temperature

Page 3 SOS if applicable

(MB level)

O2 mix deco gas (if used)

After the oldest dive:

Statistic information

DEPTH

Deepest

dive

Number

of dives

PLn

Dive time

Battery performance

O2 mix

Repetitive dive number Starting time CNS O at the end

Surface interval if applicable

No-stop dive

Decompression dive

DECO

STOP

Surface

–

interval

DEPTH DEPTH

Depth

–

Bottom

–

time

DEPTH

DIVE TIME

S L O W

CNS O2%

Exit Exit

DIVE TIME

Longest dive

Cumulative

S L O

bottom time

DIVE TIME

NO STOP

DIVE TIME

CNS O2%

(MB-) No-stop time

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System and operation

2. SYSTEM AND OPERATION

2.1 System description

Aladin TEC 3G 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 LogTRAK software to a Windows® personal computer. LogTRAK software CD is included with the Aladin TEC 3G package.

Infrared port

Aladin TEC 3G

LogTRAK

Infrared Interface (option)

2.2 Operation

NOTE: On page 8 and 16 you will nd an operating schematic.

2.2.1 Push buttons

Aladin TEC 3G can be operated with two push buttons ( 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 TEC 3G (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 TEC 3G

• Start dive manually

). Operation of the push buttons is divided

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System and operation

ENGLISH

Underwater dive mode (Algo):

• Access alternate displays

• Set bookmark

• Operate the backlight

• Activate the safety stop timer (dive mode only, in depths < 6.5m / 20ft)

Gauge mode (stopwatch):

• Restart

Diving with 2 or 3 mixtures:

• Initiate switch to gasd, gas 1 or gas 2

• Interrupt switching process

• Confirm switch to gasd, gas 1 or gas 2

2.2.2 Water contacts

On submerging in water the water contacts switch on Aladin TEC 3G automatically.

WARNING

If you have chosen the option “Water contacts off” (“set 1”, ->84), Aladin TEC 3G 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.

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System and operation

2.2.3 Introduction to Scubapro LogTRAK

LogTRAK is the software that allows Aladin TEC 3G to communicate with a Windows-based PC or Mac OS. In order to take advantage of any of these features, you need to establish a communication between your PC and Aladin TEC 3G with a dongle. To start the communication

1. Connect the dongle to your PC

2. Launch LogTRAK on your PC

3. Select the IrDa port where the dongle is connected Extras -> Options -> download

Select the port that is used for Aladin TEC 3G dongle.

4. Place the Aladin TEC 3G on the dongle.

Download dive profiles

From LogTRAK, by selecting Dive -> Download Dives you can transfer the Aladin TEC 3G Logbook to your PC or Mac. There are three main views each showing a specific part of your dive logs:

Profile shows the graphical data of the dive. Details about the dive, where you can edit, for example, the equipment and tank information. Location, shows your dive site on the world map.

The selection tabs for views are on the left side of the main window.

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System and operation

ENGLISH

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System and operation

Change warnings/settings of the Aladin TEC 3G and reading the computer information

By selecting Extras -> Read Dive Computer settings you can enable/disable warnings that cannot be enabled or disabled by using the menus on the Aladin TEC 3G unit.

Read the chapter Warnings and alarms about the possible selections that you can modify on your Aladin TEC 3G. You may also change the shown units between metric/imperial. Select Extras -> Options -> measurement units:

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ENGLISH

2.2.4 Switching on the display

S L O W

• automatically, on submerging in water* or when adaptation to atmospheric pressure is necessary;

• manually, by pushing segments light up for 5 seconds.

• Afterwards the display shows the time of the day, the O temperature.

NOTE: This display is called time of day display. Most navigation

descriptions start from this display. At the surface Aladin TEC 3G returns automatically to this display.

If there is a remaining saturation from the last dive or from a change of altitude, Aladin TEC 3G also displays the “do not ﬂy” time, the “do not

Time of day display

ﬂy” icon, the current altitude range and the prohibited altitude range (->38).

NOTE: When Aladin TEC 3G 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 TEC 3G switches on for 3 minutes automatically ->38.

Only if the option “Water contacts on” (“set 1”, ->90) is chosen. See warning ->11.

System and operation

or . If switched on with all

mix and the

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System and operation

S L O W

CNS O2%

DESAT

2.2.5 How to navigate Aladin TEC 3G at the surface

Starting from the time of day display you can enter into different menus.

“->” means “more information at page”

Off

CCR

Gas d

off

->59

Bail

->68

MB Level

L0-L5 ->46

Gas 2

->59

SP2

ppO

->66

Dive mode selection

(Algo): deco/gauge/

Gas 1

ppO

APNEA

->24

SP1

->66

->44

off

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 ->96

• Incremental depth

alarm ->96

• Dive time interval

warning ->97

• Surface interval

warning ->97

• Ascent speed alarm ->98

• Water density ->98

2.2.6 Checking the desaturation time

No-ﬂy time

Do not ﬂy icon

Desaturation time

No-dive warning

Residual nitrogen bar

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.

CCR

Altitude

adjustment

->84

Time of day display

Set 3

(Apnea)

->91

Set 2

->91

• Alarm clock -

• UTC time zone -

• Time of day -

• 24h / AM PM -

• Date -

• Display contrast -

• IrDA speed -

• Sound on / off -

• Electronic ID -

• (Desat. time CNS O

• Date

• Battery condition

Set 1

->84

> 92

> 93

> 94

> 95

% ) ->16

->17

Dive

Logbook

planner

->76

• CCR on / off -

• Depth alarm -

• Dive time alarm -

• Safety stop duration -

• ppO2 max -

• Reset to air -

• Deco gas on / off -

• PDIS -

• Unit system -

• Sait / fresh water -

• Backlight duration -

• Attention beep on / off -> 89

• Water contacts on / off -> 90

• Reset desaturation -

->80

> 85

> 86

> 87

> 88

> 90

WARNING

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

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ENGLISH

2.2.7 Checking the surface interval

L O W

System and operation

From the time of day display you can check the surface interval by pushing

The surface interval is the time since the end of the last dive and is displayed as long as there is remaining saturation.

(logbook menu).

Surface interval

Date

2.2.8 Displaying the date

From the time of day display you can display the date by pushing 1x or 2x (depending on whether there is desaturation time left).

The display switches back to the time of day display after 5 seconds without operation.

2.2.9 Checking the battery condition

Battery condition / performance

From the time of day display you can check the battery condition by pushing 2x or 3 x (depending on whether there is desaturation time left).

Aladin TEC 3G displays the estimated remaining battery performance for 5 seconds as a bar graph. If the bar graph shows 3 segments the battery warning appears ->23 and the battery has to be replaced ->99.

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 nish a dive.

• Replace the battery when the steady battery symbol appears (3 segments)!

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System and operation

NOTE: The temperature inuences 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

Battery performance high

enough for diving.

Battery warning appears.

Backlight deactivated. Replace

Diving not possible, dive planner and settings are disabled

the battery! ->99

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 TEC 3G 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.

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System and operation

ENGLISH

2.2.10 Active backlight

The display of Aladin TEC 3G 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” (->84) or with LogTRAK 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 come on within the rst 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 TEC 3G monitors the battery level throughout every dive, and if the available energy drops below the warning threshold, Aladin TEC 3G 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 TEC 3G by pushing .

On the surface Aladin TEC 3G 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: ->92 (“set 2”)

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System and operation

2.3 SOS mode

Time remaining until SOS mode

switches off automatically

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 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 ->41. 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 LogTRAK software.

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3. DIVING WITH ALADIN TEC 3G

3.1 Terminology / Symbols

The information on the display of Aladin TEC 3G varies depending on the kind of dive and the dive phase.

NOTE: For information about diving with microbubble (MB) levels see ->46. Specic

features of “Diving with two/three gas mixtures”, are described in chapter 8 ->59. Specic features of “Diving with CCR”, are described in chapter 9. CCR Diving 66.

3.1.1 General terminology / Display during no-stop phase

(Max depth >) Temperature

> Temperature , O2 mix and time of day > (Max depth)…

Current depth

In metres (feet)

DEPTH

DIVE TIME

NO STOP

Max depth

Max depth reached during the dive

O2 Mix

(until CNS O

2% >50%)

Oxygen toxicity CNS O

(Only if CNS O

Ascent rate

(Only while ascending)

CCR: SP ppO

(until CNS O 70 = 0.70 bar 130 = 1.30 bar

2% >50%)

2 x100

2% >50%)

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).

CNS O2%

No-stop phase

Dive phase during which surfacing is allowed without stop.

Time

Depth

Current depth

26.2m

Max depth

37min dive time

Elapsed bottom time

24min

No-stop time

Decompression phase

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

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Total ascent time to surface (7min)

Decompression stop

3.1.2 Display during decompression phase

All required decompression stops must be observed.

DEPTH

DIVE TIME

DECO

STOP

CNS O2%

Time

Depth

2min

Decompression

stop duration

Deepest decompression stop depth

Decompression stop depth

Deepest stage is displayed.

35.7m

Decompression rangeNo-stop range

Decompression stop duration

Prescribed duration of the decompression stop at the displayed decompression stage (minutes).

Total ascent time

Including decompression stops in minutes.

CCR: SP ppO2 x100 (until CNS O2% >50%) 70 = 0.70 bar 130 = 1.30 bar

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 TEC 3G includes this in the calculations and displays the necessary information:

% 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.

ppO

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 TEC 3G will display the ppO2 max limit setting and the corresponding MOD. Aladin TEC 3G warns you audibly and visually once the depth is reached at which the ppO2 reaches the maximum allowed value ->30.

NOTE:

• Default setting of ppO2 max is 1.4bar. The value of ppO2 max can be set by means of LogTRAK or with “set 1” between 1.2 and

1.6bar (->86). It can also be changed at the time of setting the gas mixture (->24).

• 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.

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Depth

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

CNSO

decreases

CNSO

increases

ppO

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 TEC 3G 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” ->84 or LogTRAK. With LogTRAK they can be switched off selectively.

• In addition, the sound can be turned off completely in “set 2” ->94.

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.

WARNING

Serious injury or death may result from failing to immediately respond to alarms given by Aladin TEC 3G.

3.2.1 Attention messages

Attention messages are communicated to the diver visually by symbols, letters or ashing gures. 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):

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Diving with Scubapro Aladin TEC 3G

• Maximum Operating Depth / ppO2 max is reached 30

• Set max depth is reached 28

• Oxygen toxicity reaches 75% 31

• No-stop time less than 3 minutes 32

• Prohibited altitude (surface mode) 38

• Entering decompression

(when diving with L0) 32

• Half of set dive time is reached 27

• Set dive time is reached 27

• Depth for tank switch has been reached 64

3.2.2 Alarms

Alarms are given to the diver visually by ashing symbols, letters or gures. In addition, an audible sequence in one frequency can be heard during the whole duration of the alarm.

An alarm occurs in the following situations (more information can be found on the listed pages):

• Oxygen toxicity reaches 100% 31

• Ignored decompression 34

• Exceeding the prescribed ascent rate 29 (Particular scale of beeps, ->29)

• Altitude alarm 38

•

Low battery alarm (without audible alarm): the battery icon appears if the battery has to be replaced 99

Diving with MB levels (L1-L5):

• MB no-stop time = 0 49

• MB level stop ignored 50

• MB level reduced 51

• Entering decompression when diving with MB level L1-L5 52

• Apnea mode alarm 44

3.3 Preparation for the dive

You have to check the settings of Aladin TEC 3G especially before the ﬁrst dive. All settings can be checked and changed directly at Aladin TEC 3G or via LogTRAK.

3.3.1 Setting the gas mixture and ppO

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 TEC 3G 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 2 or 3 gas mixtures please read page 59 for further reference.

For CCR dives please read page 66 for further reference.

To set the gas mixture, Aladin TEC 3G must be in user mode (time of day display).

or until

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1. Push or until the GAS 1 O2 menu appears.

ppO

max

Conﬁrm that you wish to change the oxygen fraction of

gas 1 by pushing .

Max Operating Depth MOD

Change the O2% mix by (+) and (–)

Diving with Scubapro Aladin TEC 3G

3. Change the oxygen fraction in increments of 1% by pushing or . Aladin TEC 3G will display the current fraction of oxygen, the maximum partial pressure limit (ppO

4. Confirm the selected percentage with

Change the ppO2 max by (+) and

(–)

5. By pushing or you can change the ppO

max for the chosen fraction of oxygen down to

1.0bar. Aladin TEC 3G will now display the corresponding MOD for the new ppO

6. Confirm your ppO

max settings with .

max) and the MOD.

max.

NOTE:

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

• Automatic reset of the O

% mix to 21% can be set with “set 1” ->84 or LogTRAK between 1

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

3.3.2

Setting the MB level

See chapter 6, ->46

3.3.3

Preparation for diving with 2 or 3 gas mixtures

See chapter 8, ->59

3.3.4 Preparation for diving with CCR

See page ->66

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Diving with Scubapro Aladin TEC 3G

3.3.5 Preparation for the dive and function check

Switch on Aladin TEC 3G by pushing and check the test display: Are all elements of the display activated? Do not use Aladin TEC 3G if the display does not show all elements. When switching on Aladin TEC 3G with

, the test display will not appear.

WARNING

Check the battery capacity before each dive ->17.

3.4 Functions during the dive

3.4.1 Immersion

If the water contacts are deactivated (->90), switch on Aladin TEC 3G before immersion.

WARNING

If you have chosen the option “Water contacts off” (“set 1” or LogTRAK), Aladin TEC 3G 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 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 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 LogTRAK.

. The logbook icon

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STOP STOP

DECO

DEPTH

NO STOP

DIVE TIME

L O W

CNS O2%

DEPTH

NO STOP

DIVE TIME

3.4.3 Dive time

Dive time

The whole time spent below a depth of 0.8m (3ft) is displayed as dive time in minutes. The time above

0.8m (3ft) is counted as dive time only if the diver descends again below 0.8m (3ft) within 5 minutes.

While the dive time is running, the colons on the right of the ﬁgures are ﬂashing in one second intervals. Maximum dive time displayed is 199 minutes.

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) ->86 If half of the set maximum dive time has elapsed, an audible signal goes off and ashes for 1 minute.

WARNING

Set dive time has elapsed ->27, 86 An audible signal goes off and the dive time starts ashing.

3.4.4 Current depth / O

% mix

Current depth is given in 10cm increments in metric setting and 1ft increments in imperial setting.

O2% mix Nitrogen

loading bar

Current depth

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Diving with Scubapro Aladin TEC 3G

DEPTH

DIVE TIME

CNS O2%

DEPTH

NO STOP

DIVE TIME

DEPTH

NO STOP

DIVE TIME

“ – – – “.

At a diving depth of less than 0.8m (3ft) the display shows

The O

% mix is diplayed as long as CNS O2% = 0 and no ascent speed is indicated.

3.4.5 Max depth / Temperature

Max depth

CNS O2%

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 TEC 3G shows the temperature.

Temperature, O

Temperature

mix

, Time ,

O2 mix

Max depth

Set max depth reached

WARNING

If the max depth set with LogTRAK or “set1” has been reached (default 40m/130ft) and the depth alarm is turned on, the depth display will ash. Ascend until the depth stops ashing.

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S L

DEPTH

NO STOP

DIVE TIME

S L O

L O W

S L O W

L O W

3.4.6 Ascent rate

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 TEC 3G 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 TEC 3G may require a decompression stop even within the no-stop phase because of the danger of microbubble formation.

• The decompression duration necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded.

• From great depth a slow ascent may cause heightened saturation of tissues and an extension of both decompression duration and total ascent time.

At shallow depth, a slow ascent may shorten the decompression duration.

• Display of the ascent rate has the priority over “CNS O

”.

WARNING

Ascent rate Visual alarm Audible alarm

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 TEC 3G.

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Diving with Scubapro Aladin TEC 3G

CNS O2%

DEPTH

NO STOP

DIVE TIME

depth (m) speed (m/min) depth (ft) speed (ft/min)

<6 7 <20 23

<12 8 <40 26

<18 9 <60 29

<23 10 <75 33

<27 11 <88 36

<31 13 <101 43

<35 15 <115 49

<39 17 <128 56

<44 18 <144 59

<50 19 <164 62

>50 20 >164 66

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

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 ppO

max and consequently the MOD can be reduced manually (->24, setting the gas mixture,

point 5).

In addition the maximum allowed ppO

can be set by means of LogTRAK or with “set 1” between 1.2

to 1.6 bar ->86.

WARNING

The MOD is a function of ppO2 max and the mixture used. If during the dive the MOD is reached or exceeded Aladin TEC 3G sends an audible attention message and the MOD is displayed (ashing) 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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CNS O2%

DEPTH

NO STOP

DIVE TIME

STOP STOP

S L O W

DECO

CNS O2%

DEPTH

NO STOP

DIVE TIME

STOP STOP

DECO

CNS O2%

DEPTH

NO STOP

DIVE TIME

3.4.8 Oxygen toxicity (CNS O2%)

Oxygen toxicity

Aladin TEC 3G 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.

WARNING

An audible attention signal goes off if oxygen toxicity reaches 75%. The symbol “CNSO2” ashes. Ascend to shallower depth to decrease oxygen loading and consider terminating the dive.

WARNING

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

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Diving with Scubapro Aladin TEC 3G

DEPTH

NO STOP

DIVE TIME

CNS O2%

NOTE:

• During an ascent and if the CNSO

% 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 TEC 3G will display CNSO2% values exceeding 199% with 199%.

• Aladin TEC 3G displays CNSO

% values above 50%.

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.

4-5 segments (yellow area): 1-3 segments (green area): you are safely within the no-stop range

you are approaching decompression.

When the no-stop time drops below

3 minutes the 5 segments will start

ﬂashing.**

6 segments (red area): you now have mandatory decompression obligation(s) which you must observe before reaching the surface.

** Depending on your proﬁle, the no-stop time may drop below 3 minutes before the upper 5 segments are lit. In this case, only those segments that are lit will ﬂash.

If you have entered decompression, the 6th segment will turn off as soon as you complete your last decompression obligation to indicate that you are no longer in decompression.

3.4.10 Decompression information

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

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.

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CNS O2%

DEPTH

NO STOP

DIVE TIME

CNS O2%

DEPTH

DIVE TIME

STOP

DECO

STOP

DECO

STOP

DECO

WARNING

If no-stop time drops below 3 minutes, an audible attention signal is activated, the no-stop value and the nitrogen loading bar begin to ash. If no-stop time is less than 1 minute, the no-stop display shows the ashing value “0”. In order to prevent a decompression dive, ascend slowly until the no-stop time is 5minutes or more.

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

Decompression stop duration

On entering the decompression phase, “NO STOP” disappears, the attention beep goes off. The nitrogen loading bar stops ﬂashing and the 6 The deepest decompression stage in metres (feet) is displayed and the decompression stop duration of the displayed stage appears in minutes. The display “7: 3m (10ft)” means that a decompression stop of 7 minutes at a depth of 3m (10ft) has to be made.

Decompression depth

symbol appears and an

segment lights up (red area).

When a decompression stop has been completed, the next (shallower) decompression stop is displayed. When all decompression stops have been stop time reappear.

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

completed, the

symbol extinguishes, “NO STOP” and no-

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Diving with Scubapro Aladin TEC 3G

STOP

DECO

CNS O2%

DEPTH

DIVE TIME

STOP

DECO

STOP

DECO

STOP

DECO

CNS O2%

DEPTH

DIVE TIME

Ignored decompression alarm

WARNING

The decompression alarm is activated if the decompression stop is ignored. The arrow stop duration and decompression stop depth begin to ash and an audible alarm goes off. Due to the formation of microbubbles, decompression can increase massively if a decompression stop is ignored. When the surface is reached during the decompression alarm, the arrow

, the decompression stop duration and decompression stop depth continue ashing, 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 (->20). 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

, the decompression

Total ascent time

As soon as decompression stops are necessary Aladin TEC 3G 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 TEC 3G, make a safety stop for at least three minutes at a depth of 5m (15ft).

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L O W

DEPTH

DIVE TIME

CNS O2%

3.4.11 Safety stop timer

DEPTH

STOP

Safety Stop icons

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: 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.

DIVE TIME

CNS O2%

Remaining time span

(minutes / seconds)

depth <6.5 m

(21ft)

, no-stop

3.5 Functions at the surface

3.5.1 End of a dive

Depth less than 0.8m (3ft)

After reaching the surface (<0.8m/3ft) Aladin TEC 3G 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-y time it is assumed that the diver breathes air while on the surface.

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Diving with Scubapro Aladin TEC 3G

L O W

3.5.2 Residual nitrogen bar graph

The segments in the residual nitrogen bar graph will gradually turn off as Aladin TEC 3G 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.

3.5.3 Desaturation time, No-y time and No-dive warning

No-ﬂy time

Do not ﬂy icon

No-dive warning

Time of day

Residual nitrogen bar

Ascent to altitude range 4 prohibited

5 minutes after a dive Aladin TEC 3G 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 (->38).

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 TEC 3G displays “do not y” 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

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ENGLISH

L O W

CNS O2%

DESAT

Desaturation time Residual

nitrogen bar

Oxygen toxicity

To check the elapsed surface interval 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 TEC 3G 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 TEC 3G 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 by microbubble accumulation (as opposed to CNS O2 over 40%) and you dive anyway, you will have shorter no-stop times or longer decompression times. Moreover, the duration of the no-dive warning at the end of the dive can increase considerably.

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Diving with Scubapro Aladin TEC 3G

3.6 Diving in mountain lakes

3.6.1 Altimeter

The altitude adjustment ->84 does not affect altitude ranges nor any calculations.

3.6.2 Altitude ranges

Altitude icon

Altitude range 2

Aladin TEC 3G 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 TEC 3G 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

Switching

No deco data gauge mode

4000m 13120ft

3000m 9840ft

2000m 6560ft

1000m 3280ft

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).

Aladin TEC 3G shows via ashing alti

Diving with Scubapro Aladin TEC 3G

WARNING

tude 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.

WARNING

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

Page 42

Diving with microbubble (MB) levels

DEPTH

DIVE TIME

3.6.4 Decompression dives in mountain lakes

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 TEC 3G switches automatically to gauge mode and no decompression data is calculated and displayed.

In addition, the dive planner is not available anymore.

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ENGLISH

4. GAUGE MODE

WARNING

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

Gauge mode

In gauge mode Aladin TEC 3G will display depth, dive time and max depth. By pressing 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 TEC 3G 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.

you can scroll

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 TEC 3G 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 TEC 3G shows “ – – – ” the gauge mode cannot be switched “on” or “off”. Aladin TEC

3G 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 “Apnea” starts ﬂashing.

3. By pushing 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:

that you wish to activate or deactivate the gauge mode. “Deco”, “Gauge” or

or the mode will scroll between: Gauge, Deco (SCUBA diving) or Apnea.

Page 44

Gauge mode

DEPTH

Hours Minutes Seconds

Stopwatch icon

Timing

DEPTH

DIVE TIME

Current

depth

Stopwatch

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.

Stopwatch

In gauge mode, after immersion, Aladin TEC 3G 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.

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Gauge mode

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After diving in gauge mode

Remaining time during which Aladin TEC 3G

cannot be used in computer mode

Aladin TEC 3G 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 ->41.

The no-ﬂy time after diving in gauge mode is 48 hours.

Desaturation time will not be displayed.

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Apnea mode

5. 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 TEC 3G doesn’t track nitrogen intake to your body at Apnea mode. Therefore no y time after Apnea diving is set to 48 hours. Also SCUBA diving after Apnea is recommended only after sufcient 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 ﬂashing.

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. Insufcient 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 TEC 3G has now this mode integrated.

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Apnea mode

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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 TEC 3G uses faster sampling of the depth for higher accuracy. Aladin TEC 3G updates display and maximum depth every 15 seconds, logbook is updated every second.

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 TEC 3G 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 ->95.

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Diving with microbubble (MB) levels

6. 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 TEC 3G 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 TEC 3G 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 TEC 3G 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 no-stop time, Aladin TEC 3G displays depth and duration of the ﬁrst level stop as well as the total time of ascent as soon as the MB no-stop time has run out. As the MB no-stop time is shorter than the ordinary no-stop time a diver will be required to carry out a stop (level stop) sooner than a diver using level L0. If a diver ignores a required level stop, Aladin TEC 3G 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 TEC 3G prior to the dive and during the dive ignores the recommended stops Aladin TEC 3G will automatically adjust the setting to level L3 or lower.

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Diving with microbubble (MB) levels

Depth

16min Dive time MB no-stop time

9min

Current depth

Max depth

35.7m

Level stop phase

MB no-stop phase

Dive phase during which surfacing is possible without MB level stop.

Time

Depth

MB level

activated Level L2 is active

Nitrogen loading bar

relative to LO

MB no-stop time

Remaining time at a respective depth allowing ascent without level stop.

CNS O2%

2 x

DEPTH

NO STOP

DIVE TIME

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

When two Aladin TEC 3G 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.

Microbubble accumulation at the end of dive

Time

MB level

NO STOP

DECO

NO STOP

NO STOPNO STOP

STOP

DECO

STOP

Decompression values

Decompression obligation, ->52

Level stop values

3m/10ft

6m/20ft

9m/30ft

12m/40ft

15m/50ft

Stop depth

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 (->21).

6.2.1 Display during MB no-stop phase

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Diving with microbubble (MB) levels

including level stops

(Max depth >) Temperature

> Temperature and time of day > (Max depth)…

Whereas the quantitative information relative to L0 can be seen by pressing the right button,

6.2.2 Display during level stop phase

> MB level active > No-stop time relative to L0

NOTE:

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 ash ->33. This will help you avoid entering inadvertently into decompression.

otal ascent time

DEPTH

DIVE TIME

Time

Depth

STOP

Level stop depth

The deepest level stop is displayed.

Level stop duration

The duration of a level stop at a given level stop depth

L O W

CNS O2%

Nitrogen loading bar

relative to LO

35.7m MB no-stop phase

is displayed.

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

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.

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Diving with microbubble (MB) levels

L O W

DEPTH

NO STOP

DIVE TIME

6.3 Preparation for a dive with MB levels

6.3.1 Setting the MB level

To change the MB level Aladin TEC 3G 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 Conﬁrm the selected MB level with .

or .

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

Aladin TEC 3G will display the

symbol to conﬁrm that an MB level beyond L0 (L1-L5) has been chosen. During the dive the MB level is shown by pressing 2x . If however a level stop is ignored, the new MB level is shown (->51).

NOTE:

MB levels have an inuence on the dive planner.

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 TEC 3G 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 minutes.

are visible. The remaining MB no-stop time is shown in

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 (->32).

• 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.

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Diving with microbubble (MB) levels

STOP

CNS O2%

DEPTH

DIVE TIME

STOP

CNS O2%

DEPTH

DIVE TIME

Level stop

Level stop icon

Level stop

On entering the level stop phase, “NO STOP” disappears and the arrow

duration

Deepest level stop depth

Total time of ascent

appears. The 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

extinguishes and “NO STOP” reappears. The indication of

time shows the MB no-stop time again.

Level stop ignored

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Diving with microbubble (MB) levels

STOP

CNS O2%

DEPTH

DIVE TIME

STOP

CNS O2%

DEPTH

DIVE TIME

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

, the depth and duration of the ignored level stop begin ashing. To complete the dive without being reduced to a lower MB level, you must descend to the prescribed depth immediately!

MB level reduced

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 TEC 3G 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.

NOTE:

* Attention beeps can be suppressed with “set 1” (->89) or via LogTRAK.

6.4.2 Total time of ascent

Aladin TEC 3G displays the level stop information and the total time of ascent. This includes the time of ascent as well as all level stops.

Total ascent time

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Diving with microbubble (MB) levels

DIVE TIME

STOP

DECO

CNS O2%

DEPTH

DECO

STOP

DECO

CNS O2%

DEPTH

DIVE TIME

DECO

NOTE:

The total time of ascent is calculated on the basis of the prescribed

can be subject to change if the ascent rate is not ideal (100%)

ascent rate. Total time of ascent

6.4.3 Decompression obligation

Aladin TEC 3G 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.

How to avoid decompression stops:

• Check ordinary no-stop time by pushing

until L0 appears.

• Observe the nitrogen loading bar (it is relative to L0) ->32, ->47, ->48.

• 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 In order to prevent a dive with long decompression stops it is recommended that you ascend a few metres/feet on seeing this message.

symbol ashes for 8 seconds.

Decompression obligation

Level stop information

If decompression stops become obligatory, the now also contain a decompression stop.

symbol will be displayed. The total ascent time will

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Diving with microbubble (MB) levels

STOP

DECO

STOP

DECO

STOP

MB level

3m/10ft

Deco stop duration

Level stop duration

Depth

Time

STOP

DECO

STOP

DECO

STOP

NO STOP

L O W

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 TEC 3G shows 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

and

only.

(level stop). The indicated

Level stop duration

Decompression stop depth = level stop depth

6.5 Complete a dive with MB levels

A dive with MB levels is completed the same way as a dive without MB levels (L0) (->35), save for the following exceptions:

If the MB level has been reduced during the dive, Aladin TEC 3G 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 TEC 3G 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 TEC 3G 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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PDIS (Profile Dependent Intermediate Stop)

7. PDIS (PROFILE DEPENDENT INTERMEDIATE STOP)

7.1 Introduction to PDIS (Prole-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 TEC 3G 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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PDIS (Profile Dependent Intermediate Stop)

7.2 How does PDIS work?

The mathematical decompression model in Aladin TEC 3G, called ZH-L8 ADT MB PMG, tracks your decompression status by dividing your body into 8 so-called 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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PDIS (Profile Dependent Intermediate Stop)

7.3 Special considerations when diving with more than one gas mixture (Aladin TEC 3G)

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 TEC 3G 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 TEC 3G 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.

When the calculated PDI stop is deeper than 8m/25ft, Aladin TEC 3G 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 TEC 3G tracks the uptake of nitrogen in the 8 compartments 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 no-stop 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

•

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.

above the indicated depth. The countdown timer

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PDIS (Profile Dependent Intermediate Stop)

If Aladin TEC 3G 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.

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PDIS (Profile Dependent Intermediate Stop)

NOTE:

Aladin TEC 3G 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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Diving with 2 or 3 gas mixtures

8. DIVING WITH 2 OR 3 GAS MIXTURES

Time

Depth

Bottom mix, gas 1

NOTE:

The following chapter deals with the characteristics of diving with 2 or 3 gases. In case of using 2

gas mixtures (gas 1 and d), just ignore the parts describing the gas 2.

Aladin TEC 3G enables you to use up to 3 different Nitrox mixtures during the same dive. Tank 1 contains the bottom mix (gas 1), tank 2 the travel mix and tank d contains the deco mix (gas d).

Switching the deco gas option on and off

In order to enable two- or three gas diving you must turn on the deco gas option in the SET 1 menu

->87.

Setting the gas mixture and the depth for changing the gas mixture

O2 fraction

100%

Travel mix, gas 2

Deco mix (gas d)

Switching depth (MOD gas d)

Switching depth (MOD gas 2)

21 d

21%

Range of O

During dives with 2 or 3 gas mixtures the bottom mix (gas 1) contains the lowest and gas d the highest fraction of oxygen. Aladin TEC 3G will only accept settings corresponding with this order.

fraction

WARNING

For gas mixtures having an oxygen percentage of 80% or greater the ppO2 is xed at 1.6bar and cannot be altered in any way.

Page 62

Diving with 2 or 3 gas mixtures

Depth for change of gas mixture, MOD

Procedure:

1. Enter the setting for the fraction of oxygen and the ppO2 max (MOD) for gas 1 (bottom mix)

according to the instructions on page 24 (points 1-6).

2. Repeat the process in the Gas 2 O2 and the Gas d O2 menu to set the oxygen fraction and

ppO2 max for gas 2 and gas d. Note that in this cases the resulting MODs correspond to the depths at which you plan to switch from gas 1 to gas 2 and from gas 2 to gas d during the ascent phase (switch depths).

3. If you set gas 2 and gas d to “– – O2%”, Aladin TEC 3G will compute the dive considering gas 1 only.

Aladin TEC 3G will only accept a partial pressure of oxygen (ppO2 max), as pre-set manually (->24 point 5) or by means of LogTRAK, are not exceeded.

ppO2 max

gas switch depths (MOD gas 2 / gas d) as input where the maximum

NOTE:

• During the ascent an audible and visual attention message will indicate that you have reached the depth which requires the change to gas 2 or gasd ->64.

• 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2/ gasd is set to a value other than “--O

%”, in surface mode and up to a depth of 0.8m Aladin TEC 3G will display “2G”

or “3G” 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 LogTRAK between 1 hour and 48 hours or to “no reset” (default).

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Diving with 2 or 3 gas mixtures

After the reset, the oxygen fraction of gas 1 is set to 21%, the oxygen fractions of gas2 and

gasd are set to “– – O2%” (single gas dive).

Switching between single-gas and two-gas diving

If gas 2 / gas d is not going to be used during the next dive you can either set it to “– – O

%” (->59,

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 2 O2 / Gas d O2 menu remains but Aladin TEC 3G calculates the dive using gas 1 only. If the deco gas option is turned off, the Gas 2 O2 / 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 2 or 3 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(s) of gas mixture(s) will be performed at the previously selected switch depth(s) (MOD gas 2 /gas d). If a diver ignores a required change or changes the mixture belatedly, Aladin TEC 3G 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.

Page 64

Diving with 2 or 3 gas mixtures

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.)

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.

Upon pressing the right button, the temperature and the current O

O2% will time out after 5 sec while the temperature remains.

Upon pressing the right button, “GAS 1”, “GAS 2” or “GAS d” appears in the middle row to indi-

cate the currently active gas and the MOD appears in the bottom left corner. “GAS 1”, “GAS 2” or “GAS d” will time out after 5 seconds unless the right button is pressed again.

Pressing the right button one more time shows O

% of the active gas in the bottom right corner

and the decompression information in case the dive would be finished with the currently active gas (no switch to gas 2 / deco gas). This is the calculation that Aladin TEC 3G would switch to in case, having reached the switch depth, the diver did not confirm the switch. The decompression information and the O

If an MB level greater than L0 is active, pressing the right button one more time shows the predic-

% blink.

tive decompression information and in the bottom left corner the currently active MB level.

Pressing the right button again shows the predictive decompression information relative to L0

together with the L0 symbol at the bottom left.

One more right button push shows the decompression information relative to L0 if only gas 1 is

used, with the decompression information and the O

Upon pressing the right button again, the time of day appears in the middle row.

% of gas 1 blinking.

% are shown in the lower row.

Page 65

ENGLISH

Gas 1 active, MB level L0

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

CNS O2%

DEPTH

DIVE TIME

1 3 84

DECO

STOP

CNS O2%

Max

depth

CNS O

Predictive decompression

information

Temperature

O currently active

DECO

STOP

mix of the

tank

MOD gas 1

Decompression information assuming that you finish the dive with gas 1

Gas 2/d active, MB level L0

DIVE TIME

DECO

STOP

CNS O2%

DECO

STOP

3 8

DEPTH

DIVE TIME

Diving with 2 or 3 gas mixtures

DECO

STOP

Time

O2 mix gas 1

DEPTH

DIVE TIME

Max depth

Predictive decompression

CNS O

information

Gas 1 active, MB level L1-L5

DECO

STOP

CNS O2%

Max depth

CNS O2%

Predictive decompression information relative to active MB level

DECO

STOP

Active MB level

Predictive

decompression

information relative

to active MB level

Gas 2/d active, MB level L1-L5

DECO

STOP

CNS O2%

Max

CNS O2%

depth Predictive decompression information relative to active MB level

Temperature

O2 mix of

the currently

DECO

STOP

Temperature

O2 mix of the currently active tank

DECO

STOP

Temperature

active tank

DECO

STOP

S L O W

Predictive decompression information

relative to L0

3 5 6 82

MOD gas d

mix of the

currently active

MOD gas d

3 4

MOD gas 1

7 8

DECO

STOP

Decompression information L0, assuming that you

finish the dive with gas 1

DEPTH

DIVE TIME

DECO

STOP

Active MB level

Predictive

decompression

information relative

tank

to active MB level

Time

DECO

STOP

Decompression information assuming that you finish the dive with

gas 1

relative to

DEPTH

DIVE TIME

DECO

STOP

S L O

Predictive decompression information relative to L0

Time

O2 mix gas 1

Time

Page 66

Diving with 2 or 3 gas mixtures

Changing the gas mixture

Switch depth

DEPTH

S L O

DIVE TIME

Switch to gas d

MOD gas d

After immersion, Aladin TEC 3G automatically selects gas 1.

WARNING

When during an ascent a switch depth is reached (MOD gas2 or gasd), an audible warning goes off and “GAS 2” / “GAS d”, its MOD and O2% blink for 30seconds.

Procedure:

1. Switch to the regulator with gas 2 / gas d and start breathing.

2. Conﬁrm the change by pressing fraction of gas 2 / gas d is displayed for 5 seconds without blinking.

DEPTH

DIVE TIME

within 30 seconds. “GAS 2” / “GAS d” and the oxygen

S L O

Change to gas d conﬁrmed

To interrupt the switch process at any point, press so many times until the original gas is again active; or do not conﬁrm the gas change process.

No change of gas mixture:

If a diver fails to conﬁrm the change of gas mixture or interrupts the switching procedure by pressing

, Aladin TEC 3G displays “GAS 1” / “GAS 2”, the MOD and the oxygen fraction for 5 seconds. Aladin TEC 3G continues to calculate with gas 1 / gas 2 only and adapts the decompression calculation accordingly.

Page 67

ENGLISH

Diving with 2 or 3 gas mixtures

NOTE:

If after the decompression calculation has readjusted itself to reect the failed switch the diver

goes again below the switch depth (MOD of gas 2 / gas d), Aladin TEC 3G will revert to the decompression calculation that considers gas 2 / 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

Failed or interrupted switch

MOD gas 1

Belated or manually change of gas mixture:

A diver can catch up on a required change to gas 2 / gas d until he reaches the surface.

1. Initiate the switching process by pressing . Aladin TEC 3G displays “GAS 2” / “GAS d” , MOD and the oxygen fraction of gas 2 / gas d blinking for 30 seconds. By pressing you can select “GAS 2”, “GAS d” or “GAS 1”.

2. Switch to the regulator with the selected gas mixture and start breathing.

3. Conﬁrm the change by pressing . “GAS 2”,“GAS d” or “GAS 1” and its oxygen fraction is displayed for 5 seconds without blinking. The decompression calculation will readjust accordingly.

S L O

DIVE TIME

Submerging again after a change to gas 2 / gas d:

If after a change to gas 2 / gas d the Maximum Operating Depth (MOD) of gas 2 / gas d is exceeded, the ppO2 max warning will appear ->30. Change back to from gas 2 to gas 1 (respectively from deco gas to gas 2), which is suited for this depth, or rise to the Maximum Operating Depth of gas 2 / gas d. Failure to do so can result in oxygen poisoning.

1. Initiate the switching process by pressing . Aladin TEC 3G displays “GAS 1” / “GAS 2”, MOD and the oxygen fraction of gas 1 / gas 2 for 30 seconds. By pressing you can select “GAS 2”, “GAS 1” or “GAS d”.

2. Switch to the regulator with the selected gas and start breathing.

3. Conﬁrm the change by pressing . “GAS 1” / “GAS 2” / “GAS d” and its oxygen fraction is displayed for 5 seconds without blinking. Afterwards the decompression calculation will readjust accordingly.

Page 68

CCR Diving

9. CCR DIVING

Closed Cricuit Diving

Time

Depth

SP2 SP1/2 SP1

Switching range SP1 to SP2

Switching range SP2 to SP1

NOTE:

The following chapter deals with the characteristics of CCR diving.

Aladin TEC 3G enables you to switch between 2 different ppO2 settings during the same CCR dive (setpoints SP1 and SP2).

In addition a Bail-Out gas mixture can be used which allows to switch from CCR diving to open circuit diving.

9.1 Preparation for the CCR dive

You have to check the settings of Aladin TEC 3G especially before the ﬁrst dive. All settings can be checked and changed directly at Aladin TEC 3G or via LogTRAK.

Switching the CCR option on and off

In order to enable CCR diving you must turn on the CCR option in the SET 1 menu ->87.

9.1.1 Setting the ppO

and gas mixture

WARNING

Setting the Setpoints SP1 and SP2

During dives with two setpoint settings the SP1 contains the lower fraction of oxygen. Aladin TEC 3G will only accept settings corresponding with this order.

To set the setpoints SP1 and SP2, Aladin TEC 3G must be in user mode (time of day display).

Page 69

ENGLISH

CCR Diving

Procedure:

1. Push or until the SP1 menu appears.

Conﬁrm that you wish to change the

ppO

Max Operating Depth MOD SP1

Change the O2% mix by (+) and

(–)

Set the oxygen fraction of the Diluent gas mixture and the partial pressure (ppO2) selected at the CCR:

3. Change the oxygen fraction in increments of 1% by pushing or . Aladin TEC 3G will display the current fraction of oxygen, the partial pressure (ppO2) and the MOD.

4. Confirm the selected percentage with

SP1 settings

by pushing .

Change the ppO2 by (+) and

(–)

5. By pushing or you can change the ppO2 in the range of 0.3 to 0.95bar. Aladin TEC 3G will now display the corresponding MOD for the new ppO2.

6. Confirm your ppO2 settings with .

Push or until the SP2 menu appears.

Conﬁrm that you wish to change the

SP2 setting

by pushing .

Page 70

CCR Diving

AMD (Absolute Minimum Depth SP2, not allowed to go shallower)

Change the ppO2 by (+) and

Set the partial pressure (ppO2) of the bottom setpoint, selected at the CCR:

9. By pushing or you can change the ppO2 in the range of 1.0 to 1.4bar. Aladin TEC 3G will now display the corresponding AMD (Absolute Minimum Depth SP2) for the new ppO2.

Note that the MOD SP1 and the AMD (Absolute Minimum Depth SP2) correspond to the depths at

which you plan to switch the rebreather settings from shallow water SP1 to bottom SP2 (switch depths SP1 / SP2).

NOTE:

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

• During the descent and during the ascent an audible and visual attention message will indicate that you have reached a depth which requires a change at the CCR setpoint settings or vice versa (setpoint 1 / setpoint 2).

• Without confirmation with not be accepted.

• If CCR is enabled at the SET1 in surface mode and up to a depth of 0.8m Aladin TEC 3G will display “CC” in the lower right corner of the display instead of a percentage value.

(–)

the display will disappear after 3minutes and your entries will

Setting the Bail-Out

To set the Bail-Out gas mixture, Aladin TEC 3G must be in user mode (time of day display).

1. Push

Conﬁrm that you wish to change the oxygen fraction by pushing .

or until the Bail-Out menu appears.

Page 71

ENGLISH

CCR Diving

ppO

max

Max Operating Depth MOD

Change the O2% mix by (+) and (–)

3. Change the oxygen fraction in increments of 1% by pushing or . Aladin TEC 3G will display the current fraction of oxygen, the maximum partial pressure limit (ppO

4. Confirm the selected percentage with .

max) and the MOD.

Change the ppO2 max by (+) and

5. By pushing or you can change the ppO

1.0bar. Aladin TEC 3G will now display the corresponding MOD for the new ppO

6. Confirm your ppO

(–)

max settings with .

max for the chosen fraction of oxygen down to

max.

9.2 Functions during a CCR dive

WARNING

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 SP1 / SP2 change(s) will be performed at the previously selected switch depth(s) (setpoint 1/2). If a diver ignores a required change or changes the SP1 / SP2 belatedly, Aladin TEC 3G 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 the currently selected SP1 / SP2.

Page 72

CCR Diving

Alternate displays during a CCR

NOTE:

All displays time out after 5 seconds and the default display is shown again. (Only exception is the

temperature, screen 2 below.)

The default display shows the predictive decompression prognosis, which assumes the diver will

switch to SP1 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.

Upon pressing the right button, the temperature and the current ppO

ppO2 will time out after 5 sec while the temperature remains.

Upon pressing the right button, “SP 1” appears in the middle row to indicate the currently active

gas and the AMD (Absolute Minimum Depth SP2) appears in the bottom left corner. “SP 1” will time out after 5 seconds unless the right button is pressed again.

In case that SP1 is active, pressing the right button one more time shows ppO

right corner and the decompression information in case SP2 not used (decompression information relative to SP1 only). This is the calculation that Aladin TEC 3G would switch to in case, having reached the switch depth, the diver did not confirm the switch. The decompression information and the O2% blink.

If an MB level greater than L0 is active, pressing the right button one more time shows the predic-

tive decompression information and in the bottom left corner the currently active MB level.

Pressing the right button again shows the predictive decompression information relative to L0

together with the L0 symbol at the bottom left.

One more right button push shows the decompression information relative to L0 if only the SP1 is

used, with the decompression information and the ppO

Upon pressing the right button again, the time of day appears in the middle row.

of the SP1 blinking.

are shown in the lower row.

% in the bottom

Page 73

ENGLISH

SP1 active, MB level L0

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

DEPTH

DIVE TIME

CNS O2%

DEPTH

DIVE TIME

1 3 84

DECO

STOP

CNS O2%

Max

depth

CNS O

Predictive decompression

information

DECO

STOP

Temperature

of the currently

active setpoint

PpO2 x100

MOD SP1

SP2 active, MB level L0

DIVE TIME

DECO

STOP

CNS O2%

DECO

STOP

3 8

DIVE TIME

DECO

STOP

Decompression information assuming that you finish the dive with SP1

DEPTH

DIVE TIME

CCR Diving

Time

PpO2 SP1

Max depth

Predictive decompression

CNS O

information

Temperature

PpO2 x100

of the currently

active setpoint

Max ceiling depth SP2

Time

SP1 active, MB level L1-L5

DECO

STOP

CNS O2%

Max

depth Predictive decompression information relative to active MB level

DECO

STOP

Active MB level

Predictive

decompression

information relative

to active MB level

CNS O2%

DECO

STOP

Temperature

PpO2 x100

of the currently

active setpoint

DECO

STOP

Predictive decompression information

relative to L0

3 4

MOD SP1

S L O W

Decompression information L0, assuming that you

finish the dive with SP1

DECO

STOP

Decompression information assuming that you finish the dive with

SP1

7 8

DECO

STOP

relative to

SP2 active, MB level L1-L5

CNS O2%

DECO

STOP

Temperature

DECO

STOP

CNS O2%

Max depth Predictive

decompression information relative

to active MB level

Changing from dive start setpoint (SP1) to the bottom setpoint (SP2), (descending)

3 5 6 82

Max ceiling depth SP2

of the

currently active

setpoint

DEPTH

DIVE TIME

DECO

STOP

Active MB level

Predictive

decompression

information relative

to active MB level

DEPTH

DIVE TIME

DECO

STOP

S L O

Predictive decompression information relative to L0

Time

PpO2 SP1

Time

Page 74

CCR Diving

DEPTH

NO STOP

DIVE TIME

After immersion, Aladin TEC 3G automatically starts the dive with SP1.

Time

Depth

SP2 SP1/2 SP1

Switching range form SP1 to SP2

WARNING

When the switch depth is reached an audible warning goes off and MOD blinks as long as the current depth is below MOD. Below SP1 MOD, Aladin TEC 3G calculates according to SP1 ppO decompression requirement since nitrogen fraction increases above the diluent content.

content; this may lead to long

Max Operating Depth MOD SP1 reached,

Switch to SP2

Procedure:

1. Switch your CCR from SP1 to SP2.

2. Start the change by pressing . “SP2”, its MOD (not allowed to go shallower) and the set ppO2 is displayed.

Page 75

ENGLISH

CCR Diving

DEPTH

DIVE TIME

MOD SP2

Selected ppO

SP2 x100

3. Press to conﬁrm the switch. The text is shown for 5 seconds without blinking.

DEPTH

Change to bottom setpoint conﬁrmed

DIVE TIME

To interrupt the switch process at any point, press 2x .

Changing form bottom SP2 to SP1

Time

Depth

SP2 SP1/2 SP1

Switching range SP2 to SP1

WARNING

When ascending the AMD (Absolute Minimum Depth SP2) switch depth is reached an audible warning goes off and “SP1”, its MOD and the set ppO

blink for 30seconds.

Page 76

CCR Diving

Procedure:

1. Switch your CCR from SP2 to SP1 and start breathing.

2. Conﬁrm the change by pressing within 30 seconds. “SP1” and the oxygen fraction of the Diluent is displayed for 5 seconds without blinking.

DEPTH

Change to SP1 conﬁrmed

S L O

DIVE TIME

To interrupt the switch process at any point, press 2x .

No change of gas setting at ascent:

If a diver fails to conﬁrm the change of setpoint or interrupts the switching procedure by pressing 2x

, Aladin TEC 3G displays “SP2”, the MOD and the ppO2 for 5 seconds. Aladin TEC 3G continues to calculate with rebreather injecting 100% Oxygen (maximum reached ppO2 depends on ambient pressure) and adapts the decompression calculation accordingly.

NOTE:

If after the decompression calculation has readjusted itself to reect the failed switch the diver goes

again below/above the switchpoint SP1 / SP2, Aladin TEC 3G will revert to the decompression calculation that considers SP1 / SP2 also, since upon ascending again the diver will have a renewed opportunity to perform the switch once the switch depth is reached.

Belated or manual change of setpoint:

A diver can catch up on a required change to SP1 / SP2 until he reaches the surface.

1. Initiate the switching process by pressing

. Aladin TEC 3G displays “SP1” or “SP2” blinking for

30 seconds.

2. Switch the rebreather settings accordingly.

3. Conﬁrm the change by pressing . SP1 / SP2 and its MOD and ppO2 is displayed for 5 seconds

without blinking. The decompression calculation will readjust accordingly. (Press to interrupt the switch process at any time.)

Submerging again after a change to SP1:

If after a change to SP1 the Maximum Operating Depth (MOD) of SP1 is exceeded, the ppO2 max warning will appear ->30. Change back to from SP1 to SP2, which is suited for this depth, or rise to the Maximum Operating Depth of SP1. Failure to do so can result in oxygen poisoning.

1. Initiate the switching process by pressing . Aladin TEC 3G displays “SP2”, MOD and the ppO2

for 30 seconds.

2. Switch the rebreather settings from shallow water SP1 to bottom SP2 and start breathing.

3. Conﬁrm the change by pressing

. “SP2” and the ppO2 and MOD of SP2 is displayed for

5 seconds without blinking. Afterwards the decompression calculation will readjust accordingly.

Page 77

ENGLISH

CCR Diving

Switching SP1 or SP2 to Bail-Out

A diver can switch to the Bail-Out at any time.

1. Initiate the switching process by pressing . Aladin TEC 3G displays “SP1” or “SP2” for 30 seconds. Scroll with until Aladin TEC 3G displays “bail”.

2. Switch to the regulator with the Bail-Out and start breathing.

3. Conﬁrm the change by pressing . “Bail”) and its oxygen fraction is displayed for 5 seconds without blinking. The decompression calculation will readjust accordingly.

Page 78

Dive planner

10. DIVE PLANNER

Aladin TEC 3G 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 2/d is performed at the selected MOD of gas2/d.

•

• CCR: assumption: the gas changes are performed at the selected setpoints (SP1 and SP2).

Page 79

Dive planner

ENGLISH

DEPTH

NO STOP

DEPTH

DIVE TIME

CNS O2%

10.1 Planning a no-stop dive

To select the dive planner Aladin TEC 3G 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

until PLn

Enter the dive planner

if rep. dive

No-stop time or MB no-stop time

CNS O2%

Set desired depth ( and )

Icon for MB level L1-L5

The no-dive warning and its duration are displayed

if Aladin TEC 3G detects an increased risk due to the accumulation of microbubbles.

No-dive warning (Do Not Dive)

Duration of the warning

Dive planner symbol

Input of the surface interval by pushing /

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 TEC 3G displays the CNS O which you may not rise at the end of the selected surface

% value and the altitude section to

interval.

If the no-dive warning and its duration has been

displayed, Aladin TEC 3G proposes this time – rounded up to the next 15 minutes – as surface interval. If the proposed interval is shortened, the no-dive warning appears.

Page 80

Dive planner

CNS O2%

DEPTH

NO STOP

DIVE TIME

STOP

DECO

CNS O2%

DEPTH

DIVE TIME

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 (L1-L5), 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 36 you will find further information and safety considerations regarding the no-dive

warning.

10.2 Planning a decompression dive

Conﬁrm the desired depth with

1. Activate the dive planner for a no-stop dive ->77.

2. Set the desired depth with

and , then switch into decompression planning by pushing

. Aladin TEC 3G shows the bottom time (no-stop time + 1 minute) and the appropriate

decompression information or level stop data respectively.

Set desired bottom time with and

3. “Add” asks that you set the bottom time. This is done with and . Aladin TEC 3G calculates the decompression information for this set bottom time. If an MB level (L1-5) is selected, Aladin TEC 3G calculates the level stop data.

% values higher than 199% will be displayed as 199 %.

CNS O

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.

Page 81

Dive planner

ENGLISH

10.3 Leaving the dive planner

By pushing once or twice you can exit the dive planner. This also occurs after three minutes without operation.

Page 82

Logbook

S L O

DEPTH

DIVE TIME

11. LOGBOOK

11.1 Survey

A dive is entered in the logbook if the dive time is longer than 2 minutes. Aladin TEC 3G 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 LogTRAK. All dives in the memory can be displayed directly on the dive computer.

11.2 Operation

From the time of day display you can select the logbook with .

until

Surface interval

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.

performance

mix

Dive time

Battery

Logbook icon

Max depth

Dive number

Date of the dive

From here you can:

a) get more information about the displayed dive by pushing (see below, “page 2”). Aladin TEC

Page 83

ENGLISH

3G displays further information about the selected dive.

CNS O2%

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 TEC 3G displays statistic information ->83.

Page 2

Altitude range (if >0)

Repetitive dive number

Logbook

Minimum temperature

CNS value at the end of the dive

Starting time

Push to get more information about the dive.

Page 84

Logbook

S L O W

STOP

DECO

STOP

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.

SOS if applicable

Duration of surface

interval (only with

repetitive dives)

MB level (at the beginning of the dive)

Further possible information about the dive:

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

Too fast ascent* (page 1)

Ignored decompression 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)

Ignored MB level stop* (page 1)

Desaturation was reset before

DESAT

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)

Average depth (gauge mode)

AVG

(page 3)

No-dive warning after the dive (page 1)

Apnea mode dive (page 44)

*Alarms during the dive

Page 85

Logbook

ENGLISH

S L O W

DEPTH

DIVE TIME

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

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.

Longest dive

Page 86

Settings

12. SETTINGS

12.1 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 .

12.2 Menu “set 1”

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

Setting Range Default Page

• CCR mode on / off off 85

• Depth alarm 5-100m (20 - 330ft) on/off 40m (130ft),off 85

• Dive time alarm 5-195min, on/off 40m (130ft),off 86

• Safety stop duration 1-5min 3 minutes 86

• Maximum partial pressure of oxygen (ppO

• Time limit to reset the O to air

max) 1.2-1.6bar 1.4bar 86

% mix

no reset / 1 - 48hrs no reset 86

• Deco gas on/off off 87

• PDIS (Profile Dependent

on/off off 87

Intermediate Stop)

• Unit system metric/imperial 87

• Water type on (salt water)/off (fresh

on (salt water) 88

water)

• Backlight illumination duration 2-12s ; push on / push off 6s 88

• Audible attention signals on / off (LogTRAK: selective) on 89

• Water contacts on / off on 89

• Reset desaturation on / off no reset 90

Page 87

Settings

ENGLISH

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.

Enabling CCR

1. Conﬁrm that you wish to enable CCR 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 .

Setting the depth alarm

Status

Alarm depth

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

3. Conﬁrm the selected depth with

. “On” or “Off” starts to ﬂash.

or .

4. “On” indicates “activated”, “Off” indicates “deactivated”.

switches between “On” and “Off”.

Conﬁrm the selected status with .

Scubapro Aladin TEC 3G User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual