SubGear XP-H, xp-3h User Manual

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XP-H

Page 2

WARNING

You must carefully read and understand this entire manual before using your SUBGEAR XP-H.

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 SUBGEAR XP-H.

Guidelines for the use of XP-H

The following guidelines for using XP-H 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.

• XP-H is designed for dives with compressed air (21% O

) and Nitrox (22 to 50% O2) only. Do not

use XP-H 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

. An incorrect gas mixture can be lethal!

• Only use XP-H with open circuit breathing systems.

• Only use XP-H for diving with an independent breathing apparatus. XP-H 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.

• XP-H has a ppO

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. XP-H 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 XP-H 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 5m /15ft) 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. XP-H does not substitute for a dive buddy.

• Only make dives that are appropriate to your level of dive training. XP-H does not increase your knowledge of diving.

Safety considerations

I Safety considerations

Page 3

English

Safety considerations

• Always dive with back-up instruments. Make sure that you always use back-up instrumentation including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have access to decompression tables whenever diving with a dive computer.

• Avoid repeated ascents and descents (yo yo diving).

• Avoid repeated heavy workload while at depth.

• Plan the dives to be shorter if they are made in cold water.

• After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should be as slow as possible.

• You MUST be familiar with all signs and symptoms of decompression sickness before using XP-H! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay between the onset of symptoms and the treatment for decompression sickness.

• Only dive with Nitrox after you have been thoroughly instructed by a recognised institution.

Repetitive dives

• Do not start your next dive before your CNS 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 48, or battery replacement, see page 52) 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 XP-H prohibits via the flashing altitude range number (see page 27).

Flying after diving

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

XP-H dive instrument is a personal protective equipment in compliance with the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified the conformity with the European Standard EN 13319:2000.

EN 250:2000 Respiratory equipment - Open circuit self contained compressed air diving apparatus Requirements, testing, marking (pressure gauge test).

EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices Functional and safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope.

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Introduction

Congratulations on purchasing XP-H and welcome to SUBGEAR. From now on you will enjoy the assistance of an extraordinary dive computer - equipped with SUBGEAR innovative technology - while diving.

We thank you for choosing XP-H and we hope you will enjoy safe dives in the future! Further information on SUBGEAR and SUBGEAR products can be found on our web page at www.subgear.com.

To make this manual easier to read we will use the term "

XP-H

" as an abbreviation for "SUBGEAR

XP-H

diving computer" throughout this booklet.

Safety considerations

Dive computers provide divers with data; they, however, do not provide the knowledge about 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 XP-H.

Important remarks concerning signal words and symbols

This operating manual makes use of the following icons to indicate especially important comments:

Remarks Information and tips which are important for optimal use of the functions of

XP-H.

Danger! 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. ->6

Audible signals

Audible attention signal

Audible alarm signal

Introduction

Instructions for manual input

Press left push button Press and hold (1 second)

left push button

Press and hold (1 second)

both push buttons

Press right push

button

Press and hold

(1 second) right push button

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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English

Quick reference

Time of day / Date Decompression depth Desaturation time (DESAT) Duration of no-dive warning Duration of surface interval

Current depth

Do not fly icon

No-dive warning

Battery icon

No-stop indicator Ascent time icon

No-stop time / Total ascent time

Partial pressure of oxygen ppO

Alarm clock icon / Infrared icon

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

mix

Oxygen toxicity CNS O

Ascent rate

Too fast ascent

Gauge icon

Dive time / No-fly time / SOS duration Repetitive dive number

Altitude sections

Log Book Decompression stop

obligation / Ignored decompression stop Decompression stop indicator

Decompression stop duration

mix icon (input)

Setting icon

Service icon

Tank pressure Max depth Maximum Operating Depth (MOD) Dive number

Icon for safety stop timer

AMPM AM/PM icon DESAT

Desaturation icon

Operating scheme

"->" means "more information at page"

Enter / Scroll / Change setting Backlight

Exit

Off

Time of day display

• (Desat. time CNS O

% ) ->14

• Date

->14

• Battery condition

->14

• Depth alarm -> 45

• Dive time alarm -> 46

• Safety stop time -> 46

• ppO2 max -> 46

•

Tank pressure alarms

-> 46

• Reset to air -> 46

• PDIS -> 46

• Unit system -> 46

• Unit system, tank -> 47

• Salt water -> 47

• Light time -> 47

• Attention beep -> 47

• Water contacts -> 47

• Reset desaturation -> 48

• Alarm clock ->48

• UTC time zone ->49

• Time of day ->49

• Date ->49

• 24h / AM PM ->49

• LCD contrast ->49

• IrDA speed ->50

• Sound on / off ->50

• Electronic ID ->50

Set 1

->45

Logbook

->43

Dive

planner

->42

Without operation the display switches automatically back to the time of day display and after 3 minutes the display switches off. See also page 13.

Quick reference

O2 mix /

ppO2 max

->20

MB level

->31

Gauge

mode

->29

Altitude

meter

-> 27

Set 2

->48

MB level symbol

PDIS icon

Page 6

Operating scheme

Display switched off

mix Logbook Diveplanner (PLn)

Oxygen concentration

ppO

max

(MOD)

Confirmation

Page 1

Page 2

Page 4

Max depth

No-stop dive

Altitude range (if >0)

Deepest dive Number of dives

Longest dive Cumulative bottom time

SOS if applicable

Surface interval if applicable

Exit

After the oldest dive:

Statistic information

Date of the dive

Minimum temperature

Dive number

Dive time

Surface interval

No-stop time

Depth

Exit

Repetitive divenumber Starting time

CNS O

% at

the end

Battery performance

mix.

Page 3

Page 7

English

List of chapters

I Safety considerations ................................................................................................................2

Introduction ................................................................................................................................4

Important remarks concerning signal words and symbols .................................................. 4

Quick reference/Operating scheme ........................................................................................ 5

List of chapters ..........................................................................................................................7

II System and operation ...............................................................................................................9

1 System description ...................................................................................................................... 9

2 Operation ..................................................................................................................................... 9

2.1 Push buttons .................................................................................................................... 9

2.2 Water contacts ............................................................................................................... 10

2.3 Dive.Log dedicated software application ........................................................................ 10

Configuring XP-H ..................................................................................................................... 10

2.4 Switching on the display ................................................................................................. 13

2.5 How to navigate XP-H at the surface .............................................................................. 13

2.6 Checking the desaturation time ...................................................................................... 14

2.7 Checking the surface interval ......................................................................................... 14

2.8 Displaying the date ........................................................................................................ 14

2.9 Checking the battery condition ....................................................................................... 14

2.10 Active backlight .............................................................................................................. 15

2.11 Switching off the display ................................................................................................. 16

2.12 Alarm clock .................................................................................................................... 16

3 SOS mode ................................................................................................................................. 16

III Diving with XP-H ......................................................................................................................17

1 Terminology / Symbols ............................................................................................................... 17

1.1 General terminology / Display during no-stop phase ...................................................... 17

1.2 Display during decompression phase ............................................................................. 17

1.3 Nitrox information (O

information) .................................................................................. 18

2 Attention messages and alarms ................................................................................................. 19

2.1 Attention messages ........................................................................................................ 19

2.2 Alarms ............................................................................................................................ 19

3 Preparation for the dive .............................................................................................................. 20

3.1 Setting the gas mixture and ppO

max .......................................................................... 20

3.2 Preparation for the dive and function check .................................................................... 20

4 Functions during the dive ........................................................................................................... 21

4.1 Immersion ....................................................................................................................... 21

4.2 Dive time ....................................................................................................................... 21

4.3 Current depth / O

% mix ................................................................................................ 21

4.4 Tank pressure / Maximum depth / Temperature .............................................................. 21

4.5 Ascent rate ..................................................................................................................... 22

4.6 Partial pressure of oxygen (ppO

max) / Maximum Operating Depth (MOD) .................... 23

4.7 Oxygen toxicity (CNS O2%) ............................................................................................. 23

4.8 Nitrogen loading bar graph ............................................................................................. 24

4.9 Decompression information ............................................................................................ 24

4.10 Safety stop timer ............................................................................................................ 25

5 Functions at the surface ............................................................................................................. 26

5.1 End of a dive .................................................................................................................. 26

5.2 Residual nitrogen bar graph ............................................................................................ 26

5.3 Desaturation time, No-fly time and No-dive warning ....................................................... 26

6 Diving in mountain lakes ............................................................................................................. 27

6.1 Altitude ranges ............................................................................................................... 27

6.2 Prohibited altitude ........................................................................................................... 28

6.3 Decompression dives in mountain lakes ......................................................................... 28

Page 8

List of chapters

7 Gauge Mode .............................................................................................................................. 29

8 Diving with microbubble (MB) levels ........................................................................................... 31

8.1 Comparison of dives with MB level L0 and MB level L5 .................................................. 32

8.2 Terminology .................................................................................................................... 32

8.3 Preparation for a dive with MB levels .............................................................................. 33

8.4 Functions during the dive with MB levels ........................................................................ 34

8.5 Complete a dive with MB levels ...................................................................................... 37

9 PDIS (Profile Dependent Intermediate Stop) ............................................................................... 38

9.1 Introduction to PDIS (Profile-Dependent Intermediate Stop) ............................................ 38

9.2 How does PDIS work? ................................................................................................... 39

9.3 Diving with PDIS ............................................................................................................. 40

IV Dive planner ............................................................................................................................. 42

1 Planning a no-stop dive ............................................................................................................. 42

2 Leaving the dive planner ............................................................................................................ 42

V Logbook ................................................................................................................................... 43

1 Survey ........................................................................................................................................ 43

2 Operation ................................................................................................................................... 43

VI Settings .................................................................................................................................... 45

1 Menu "set 1" .............................................................................................................................. 45

2 Menu "set 2" .............................................................................................................................. 48

VII Appendix .................................................................................................................................. 51

1 Technical information ................................................................................................................. 51

2 Maintenance .............................................................................................................................. 51

2.1 Connecting the high pressure hose ................................................................................ 52

2.2 Replacing the battery ...................................................................................................... 52

3 Warranty .................................................................................................................................... 54

4 Index .......................................................................................................................................... 55

Page 9

English

II System and operation

1 System description

XP-H 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 Dive.Log software to a Windows® personal computer. Dive.Log software CD is included with the

XP-H

package. Infrared interfaces are available in PC.

Infrared port

SUBGEAR XP-H

Dive.Log

Infrared Interface

(option)

2 Operation

On page 5 and 13 you will find an operating schematic.

2.1 Push buttons

XP-H can be operated with two push buttons (

). Operation of the push buttons is divided into

"press" ( / ) and "press and hold (1 second)" ( / ).

At the surface:

/ • Switch on XP-H (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

• Switch on the backlight

• Exit the current function or menu and switch to the

time of day display

• Switch off XP-H

Under water:

• Access alternate displays

• Switch on the backlight

•

Activate the safety stop timer

(dive mode only, in depths < 6.5m / 21ft)

Push buttons

Water contacts (one located in front and one on back, however, inaccessible)

Page 10

2.2 Water contacts

On submerging in water the water contacts switch on XP-H automatically.

WARNING

If you have chosen the option "Water contacts off" ("set 1", ->47), XP-H will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.

2.3 Dive.Log dedicated software application

With Dive.Log you can configure XP-H, transfer dive data to a personal computer and graphically display the data. To start the communication, turn on XP-H and place it so that its infrared port is in front of the infrared interface. If XP-H detects an infrared device within range

appears.

Configuring XP-H

To configure XP-H, select "Dive Computer Settings" under "OPTIONS" on the main menu bar of Dive.Log after having established communication between your PC and XP-H. The following window will appear:

When making any changes to the settings via Dive.Log, you must press the "Write" icon for the changes to take effect.

Operation

Page 11

English

Operation

The following settings may be changed with Dive.Log or via "set 1" or "set 2" directly on

XP-H

Setting Range Default Page

• Depth alarm

• Dive time alarm

• Safety stop time

• Tank pressure warning and alarm

• PDIS

• Tank pressure unit

• Salt water

• Backlight duration

• Maximum partial pressure of oxygen (ppO2 max)

• Time limit to reset the O2% mix to air

• Unit system

• Audible attention signals

• Water contacts

• Reset desaturation

• Alarm clock

• UTC (Universal Time Change) zone

• Time of day

• 24 or AM/PM setting

• Date

• Display contrast

• Sound

5-100m / 15-330ft 5-195 min off, 1-5 min warning 50-200bar/750-3000psi alarm 20-120bar / 300-1750psi on / off bar / psi on / off 2-12s / push on/off

1.2-1.6bar no reset / 1 - 48hrs metric/imperial on / off (Dive.Log: selective) on / off on / off 0 - 23h 59min, on/off ±13hrs, increments: 15min hours:minutes 24 (off) / AM/PM (on)

1 (low) -12 (high) on / off

40m/130ft 60min 3min 100bar/1450psi 40bar/600psi off bar on 6s

1.4bar no reset on on no reset

12:00, off

4 on

45 46 46

46 46 47 47 47

46 46 46 47 47 48 48 49 49 49 49 49 50

The following data may be recalled with Dive.Log:

• Number of past dives • Dive profile

• Total duration of dives • Logbook

• Deepest dive • Temperature curve

• Longest dive • Alarms and attention messages

• Atmospheric pressure • Battery condition

• Tank pressure at beginning and end of the dive

Downloading your dives

XP-H’s memory allows you to store approximately 15 hours of dive profile

information in 4 second sampling intervals. With Dive.Log you can transfer this information to the PC in order to visualize and analyze your dives on the monitor. To download data from XP-H, click on "NEW" under the "LOGBOOK" menu to open and name a new logbook or open an existing logbook. Then click on the "TRANSFER DIVES" icon: a box will appear on the screen identifying the computer being downloaded, and a progress bar will show the status of the transfer. You can choose between transferring all dives or new dives only (default

setting) from XP-H’s memory. If you choose to transfer new dives only, Dive.Log will only transfer dives that are more recent than the most recent dive already saved in the PC logbook. To transfer all dives, you must change the default setting by selecting "Transfer" under "Dives" in the main menu bar.

Once the data is downloaded, a window will show you a summary table of all dives; for the selected dive, another window will show you its details. From these windows you can add and edit your dive information.

Page 12

Operation

Dive window

Dive information panel

Dive profile panel

Alarm symbols

Notes panel

Dive computer display

Tissue panel

Physiology panel

Dive table

Page 13

English

Operation

2.4 Switching on the display

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

• Manually, by pushing

or . If switched on with all segments

light up for 5 seconds.

Afterwards the display shows the time of the day, the O

mix and the

temperature.

This display is called time of day display. Most navigation descrip-

tions start from this display. At the surface XP-H returns automatically to this display.

If there is a remaining saturation from the last dive or from a change of altitude,

XP-H also displays the "do not fly" time, the "do not fly" icon, the current altitude range and the prohibited altitude range (->27).



When XP-H is in state of rest no information is displayed but the

atmospheric pressure is continuously monitored. If a change in altitude range is detected, XP-H switches on for 3 minutes automatically ->27.

* Only if the option "Water contacts on" ("set 1", ->47) is chosen. See warning ->10.

2.5 How to navigate XP-H at the surface

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

• Enter with into the function or sub menu.

• With you can switch to the time of day display.

• After 3 minutes without operation XP-H returns to the time of day display.

Off

Time of day display

• (Desat. time CNS O

% ) ->14

• Date

->14

• Battery condition

->14

• Depth alarm -> 45

• Dive time alarm -> 46

• Safety stop time -> 46

• ppO2 max -> 46

• Tank pressure alarms -> 46

• Reset to air -> 46

• PDIS -> 46

• Unit system -> 46

• Unit system, tank -> 47

• Salt water -> 47

• Light time -> 47

• Attention beep -> 47

• Water contacts -> 47

• Reset desaturation -> 48

• Alarm clock ->48

• UTC time zone ->49

• Time of day ->49

• Date ->49

• 24h / AM PM ->49

• LCD contrast ->49

• IrDA speed ->50

• Sound on / off ->50

• Electronic ID ->50

Set 1

->45

Logbook

->43

Dive

planner

->42

Time of day display

O2 mix /

ppO2 max

->20

MB level

->31

Gauge

mode

->29

Altitude

meter

-> 27

Set 2

->48

Page 14

Operation

2.6 Checking the desaturation time

From the time of day display you can check the desaturation time* by pushing

. Desaturation time is determined either by oxygen toxicity, nitrogen saturation or the regression of microbubbles, depending on which requires the longer time.

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

* Only displayed if there is a remaining saturation due to the last dive or change of altitude.

WARNING

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

2.7 Checking the surface interval

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

(logbook menu)

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

2.8 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.

2.9 Checking the battery condition

From the time of day display you can check the battery condition by pushing 2x or 3 x

(depending on whether

there is desaturation time left).

XP-H displays the estimated remaining battery performance for 5 seconds as a bar graph. If the bar graph shows 3 segments the battery warning appears ->15 and the battery has to be replaced ->52.

Do not fly icon

No-fly time

No-dive warning

Residual nitrogen bar

Oxygen toxicity

Desaturation time

Surface interval

Date

Battery condition /

performance

Page 15

English

Operation

WARNING

• If the bar graph shows 2 segments, the battery symbol will blink, on the surface and in dive mode, to alert the diver of a dangerous situation: the battery may not have enough energy to finish a dive.

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

The temperature influences the battery performance. In cold water it is lower than in

warm water. If the battery shows 4 segments on the surface, it is possible for it to drop to 3 segments during the dive. If this is the case, the backlight will be temporarily disabled. See below.

Battery performance high enough for diving.

Battery warning appears. Backlight deactivated. Replace the battery! ->52

WARNING

Flashing battery warning. Audible alarms and attention

messages disabled! Backlight deactivated! Risk of computer malfunction. Do not let the battery reach this condition!

Diving not possible, dive planner and settings are disabled

Bar graph interpretation

XP-H marks dives started with 3 or less segments in the logbook with the battery symbol. Logbook information is not lost even when the battery is removed for a long time.

2.10 Active backlight

The display of XP-H can be illuminated both on the surface and underwater. The backlight can be activated by pushing

. The light will turn off according to the selection in settings: Set 1 -> Light. The backlight can only be activated if the computer display is on.

Repeated activation of the backlight will reduce battery life.

Page 16

Operation / SOS

2.11 Switching off the display

From the time of day display you can switch off XP-H

by pushing .

On the surface XP-H switches off automatically after 3 minutes without operation.

2.12 Alarm clock

The alarm clock goes off only at the surface. If the alarm clock is "on", the time of day display shows

When alarm is triggered:

flashes and special attention beeps are played for 30 seconds or until

the user presses a button.

Setting the alarm clock: ->48 ("set 2")

3 SOS mode

Activation: automatic If the diver remains above a depth of 0.8m (3ft) for more than three minutes without observing a prescribed decompression stop, the computer will 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.

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!

Time remaining until

SOS mode switches

off automatically

Page 17

English

III Diving with XP-H

1 Terminology / Symbols

The information on the display of XP-H varies depending on the kind of dive and the dive phase.

1.1 General terminology / Display during no-stop phase

CNS O2%

DEPTH

NO STOP

DIVE TI ME

Current depth

In metres (feet)

Dive time

Duration of the dive (min)

No-stop phase

Dive phase during which surfacing is allowed without stop.

Decompression phase

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

Nitrogen loading bar

No-stop time

Remaining time at a given depth during which ascent is allowed without decompression stop (min)

Max depth

Max depth reached during the dive

Oxygen toxicity

CNS O

Ascent rate

(Only while ascending)

Time

Current depth

24min

No-stop time

26.2m Max depth

37min dive time Elapsed bottom time

Depth

Tank pressure -> Max depth -> Temperature -> O2 mix & time of the day -> Tank pressure

1.2 Display during decompression phase

STOP

DECO

CNS O2%

DEPTH

DIVE TIM E

Decompression stop

All required decompression stops must be observed.

Decompression stop depth

Deepest stage is displayed.

Total ascent time to surface (7min)

Time

35.7m No-stop range Decompression range

Deepest decompression stop depth

2min

Decompression

stop duration

Depth

Decompression stop duration

Prescribed duration of the decompression stop at the displayed decompression

stage (minutes).

Total ascent time

Including decompression stops in minutes.

Page 18

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 maximum depth. XP-H 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 50% 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, XP-H will display the ppO

max limit setting and the corresponding MOD. XP-H warns you audibly and visually once the depth is reached at which the ppO2 reaches the maximum allowed value ->23.

• Default setting of ppO2 max is 1.4bar.

The value of ppO2 max can be set by means of Dive.Log or with "set 1" between

1.2 and 1.6bar (->46). It can also be changed at the time of setting the gas mixture (->23).

• The CNS O

% 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 O

value increases, if the partial pressure of oxygen is below 0.5bar, the CNS O2 value decreases. The closer the CNS O2 value is to 100%, the closer the limit where symptoms of oxygen toxicity can occur.

Depth

at which ppO2

reaches 0.5bar

for three

commonly

used mixes

CNS O

decreases

CNS O

increases

21% 13m (43ft) 32% 6m (20ft) 36% 4m (13ft)

ppO

0.21bar

0.5bar

WARNING

Nitrox diving may only be attempted by experienced divers after proper training from an internationally recognized agency.

Terminology / Symbols

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English

2 Attention messages and alarms

XP-H draws the diver’s attention to certain situations and warns the diver of unsafe diving practices. Attention messages and alarms are visual and / or audible.

• The audible attention messages can be switched off in "set 1" ->47 or Dive.Log. With Dive.Log they can be switched off selectively.

• In addition, the sound can be turned off completely in "set 2" ->50.

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 XP-H.

2.1 Attention messages

Attention messages are communicated to the diver visually by symbols, letters or flashing figures. In addition, two short audible sequences can be heard (in an interval of 4 seconds) in two different frequencies under water.

4s (can be switched off)

Attention messages come up in the following situations (more information can be found on the listed pages): Page

• Maximum Operating Depth / ppO

max is reached 23

• Oxygen toxicity reaches 75% 23

• No-stop time less than 3 minutes 24

• Prohibited altitude (surface mode) 28

• Entering decompression 24

• Tank pressure warning 46

• Depth alarm 45

• Dive time alarm 46

• Tank pressure alarm 46

2.2 Alarms

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

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

• Oxygen toxicity reaches 100% 23

• Ignored decompression 24

• Exceeding the prescribed ascent rate 22 (Particular scale of beeps, ->22)

• Low battery alarm (without audible alarm): the battery icon appears if the battery has to be replaced. 15

Attention messages and alarms

Page 20

3 Preparation for the dive

You have to check the settings of XP-H especially before the first dive. All settings can be checked and changed directly at XP-H or via Dive.Log.

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 XP-H 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.

or until

Max Operating Depth MOD

Change the O2% mix by

(+) and (–)

ppO

max

Change the ppO2 max by

(+) and (–)

To set the gas mixture, XP-H must be in user mode (time of day display).

1. Push

or until the symbol for the setting of the O2 mixture

appears.

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

3. Change the oxygen fraction in increments of 1% by pushing

or . XP-H will display the current fraction of oxygen,

the maximum partial pressure limit (ppO2 max) and the MOD.

4. Confirm the selected percentage with .

5. By pushing or you can change the ppO2 max for the chosen fraction of oxygen down to 1.0bar. XP-H will now display the corresponding MOD for the new ppO

max.

6. Confirm your ppO2 max settings with .

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

• Automatic reset of the O2% mix to 21% can be set with "set 1" ->46 or Dive.Log between 1 and 48 hours or to "no reset" (default).

3.2 Preparation for the dive and function check

Switch on XP-H by pushing

and check the test display: Are all elements of the display activated? Do not use XP-H if the display does not show all elements. When switching on XP-H with , the test display will not appear.

WARNING

Check the battery capacity before each dive ->14.

Preparation for the dive

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Functions during the dive

4 Functions during the dive

4.1 Immersion

If the water contacts are deactivated (->47), switch on XP-H before immersion.

WARNING

If you have chosen the option "Water contacts off" ("set 1" or Dive.Log), XP-H 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, tank pressure and dive time displayed, maximum 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.

4.2 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.

If a dive lasts longer than 199 minutes the dive time display starts again at 0 minutes.

4.3 Current depth / O2% mix

Current depth is given in 10cm increments in metric setting and 1ft increments in imperial setting. At a diving depth of less than 0.8m (3ft) the display shows " – – – ".

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

Depth is calculated using the pressure and density of the water and is slightly effected by salinity. When diving in fresh water, use setting: Set1 -> Salt. off

4.4 Tank pressure / Maximum depth / Temperature

Tank pressure is the default information shown on the diving display. Other values can be displayed by pressing the right button, but tank pressure will show again after a timeout of 5 seconds.

> Temperature, O2 mix > Temperature , Time , O2 mix > Max depth

Dive time

Current depth

O2% mix

Nitrogen loading bar

CNS O2%

Max depth

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Functions during the dive

4.5 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. XP-H 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 XP-H 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 XP-H.

depth (m) <6 <12 <18 <23 <27 <31 <35 <39 <44 <50 >50 speed (m/min) 7 8 9 10 11 13 15 17 18 19 20 depth (ft) <20 <40 <60 <75 <88 <101 <115 <128 <144 <164 >164 speed (ft/min) 23 26 29 33 36 43 49 56 59 62 66

Ascent rate

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Functions during the dive

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

The maximum partial pressure of oxygen ppO

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 (->20, setting the gas mixture, point 5). In addition the maximum allowed ppO

can be set by means of Dive.Log or with "set 1" between 1.2 to 1.6bar ->46. When MOD is exceeded, alarm goes on and MOD value will replace tank pressure value.

WARNING

The MOD is a function of ppO2 max and the mixture used. If during the dive the MOD is reached

or exceeded XP-H sends an audible attention message and the MOD is displayed (flashing) in the lower left corner. Ascend to a depth shallower than the displayed MOD in order to diminish the danger of oxygen poisoning.

WARNING

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

4.7 Oxygen toxicity (CNS O2%)

XP-H 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 (O

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” flashes. 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 flash. Danger of oxygen toxicity! Start procedure for terminating the dive.

• During an ascent and if the CNS O2% value does not increase anymore (due to a lower partial pressure of oxygen), the audible warning is suppressed.

• During the ascent, the display of the oxygen toxicity is replaced by the ascent rate. If the ascent is stopped, the display changes back to the indication of the CNS value.

• XP-H will display CNS O

% values exceeding 199 %

with 199 %.

Max Operating Depth MOD

Oxygen toxicity

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Functions during the dive

4.8 Nitrogen loading bar graph

The nitrogen loading bar gives a graphical representation of how close to decompression you are. As you absorb nitrogen during the dive, more and more segments of the bar will light up. Depending on your depth, the segments can light up more or less rapidly.

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

4-5 segments (yellow area): you are approaching decompression. When the no-stop time drops below 3 minutes the 5 segments will start flashing.*

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

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.

4.9 Decompression information

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

• No-stop display "99:" means remaining time of 99 minutes or more.

• No-stop time is influenced by the water temperature.

WARNING

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

WARNING

Dives that require decompression stops are not recommended.

Decompression values

On entering the decompression phase, "NO STOP" disappears, the

STOP

DECO

symbol appears and an attention beep goes off. The nitrogen loading bar stops flashing and the 6th segment lights up (red area). The deepest decompression stage in metres (feet) is displayed and the decompression stop duration of the displayed stage appears in minutes. The display "7: 3m (10ft)" means that a decompression stop of 7 minutes at a depth of 3m (10ft) has to be made.

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

STOP

DECO

symbol extinguishes, "NO STOP" and no-stop

time reappear.

No-stop time

Nitrogen loading bar

No-stop time less

than 1 minute

Decompression

depth

Decompression

stop duration

Decompression obligation

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English

Functions during the dive

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

WARNING

The decompression alarm is activated if the decompression stop is ignored. The arrow

STOP

DECO

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

STOP

DECO

, the decompression stop duration and decompression stop depth continue flashing, in order to point to the risk of a decompression accident. The SOS mode is activated 3 minutes after the dive if corrective action is not taken (->16). 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 As soon as decompression stops are necessary XP-H shows the total

time of ascent. This includes the ascent time from the current depth to the surface and all decompression stop obligations.

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 XP-H, make a safety stop for at least three minutes at a depth of 5m (15ft).

4.10 Safety stop timer

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 is activated by the diver and counts back from 3 minutes to zero. It can be restarted any number of times. The safety stop timer can be activated under the following conditions: depth < 6.5m (21ft), no-stop display 99 minutes. 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 6.5m (21ft) or the no-stop phase is shorter than 99 minutes.

Ignored decompression

alarm

Total ascent time

Minutes

Safety stop icons

Seconds

Remaining time span

Page 26

Functions during the dive / Functions at the surface

5 Functions at the surface

5.1 End of a dive

After reaching the surface (<0.8m/3ft) XP-H remains in dive mode for 5 minutes. The delay allows for surfacing for a short period for orientation. After 5 minutes the dive is closed and it is entered into the logbook. The time of day is then displayed for 3 minutes, after which the computer turns off.

WARNING

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

5.2 Residual nitrogen bar graph

The segments in the residual nitrogen bar graph will gradually turn off as XP-H 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.

5.3 Desaturation time, No-fly time and No-dive warning

5 minutes after a dive XP-H 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 (->28). 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 XP-H displays "do not fly" may lead to serious injury or death from decompression sickness.

WARNING

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

Depth less than 0.8m (3ft)

Time of day

Residual nitrogen bar

Ascent to altitude

range 4 prohibited

Do not fly icon

No-fly time

No-dive warning

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English

Functions at the surface / Diving in mountain lakes

Residual nitrogen

bar

Oxygen toxicity

Desaturation time

To check the remaining desaturation time and

oxygen toxicity press .

Desaturation time is determined either by oxygen

toxicity, nitrogen saturation or the regression of

microbubbles, depending on which requires the

longer time.

Surface interval

To check the elapsed surface interval

press .

If XP-H detects a situation of increased risk (due to the potential of microbubble accumulation from previous dives or a CNS O

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. XP-H recommends this as minimum surface interval in order to reduce the number of microbubbles and/or to reduce the CNS O2 level below 40%.

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.

6 Diving in mountain lakes

6.1 Altitude ranges

XP-H 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, XP-H 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 stylised 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:

No-dive warning

Altitude range 2

Altitude icon

Page 28

Diving in mountain lakes

Altitude ranges

No deco data gauge mode

4000m 13120ft

Switching at approx.

610mbar

8.85psi

725mbar

10.51psi

815mbar

11.82psi

905mbar

13.12psi

3000m 9840ft

2000m 6560ft

1000m 3280ft

6.2 Prohibited altitude

WARNING

Flying while XP-H displays "do not fly" may lead to serious injury or death from decompression sickness.

Max altitude: 850m 1650m 2650m 4000m

2790ft 5413ft 8694ft 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.

6.3 Decompression dives in mountain lakes

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), no decompression data is calculated and displayed (automatic gauge mode). In addition, the dive planner is not available anymore.

Ascent to altitude range

3 and 4 prohibited.

Max allowed altitude: 2650 m

(8694ft).

Dive at altitude range 4:

• no deco data (autom. gauge mode)

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Gauge Mode

7 Gauge Mode

WARNING

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

In gauge mode XP-H will display depth, dive time and tank pressure . By pressing you can scroll from the tank pressure 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. XP-H will display no information about microbubble development. The settings for the gas mixture, MOD and microbubble level cannot be set and the dive planner cannot be selected.

Switching the gauge mode on and off

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

WARNING

• Dives in gauge mode are performed at your own risk!

• After diving in gauge mode you must wait for at least 48 hours before using a decompression computer.

After diving in gauge mode, XP-H can not be used as dive computer for 48 hours.

Procedure:

1. From the time of day display push

or until the gauge

symbol and "on" or "off" are displayed.

(If XP-H shows “ – – – “ the gauge mode cannot be switched “on” or “off”.

XP-H shows “ – – – “ for 48 hours after a dive in gauge mode and as long as there is remaining desaturation after a dive in computer mode.)

2. Confirm with that you wish to activate or deactivate the gauge mode. The "on" or "off" starts flashing.

3. By pushing or the gauge mode is switched on or off.

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:

>Tank pressure

>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.

Dive time

Gauge icon

Tank pressure/ Max depth / Temperature /

verage depth (AVG)

Current depth

Stopwatch

DEPTH

DIVE TIME

Page 30

Stopwatch

In gauge mode, after immersion, XP-H 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.

After diving in gauge mode

XP-H 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.

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

Desaturation time will not be displayed.

Hours Minutes Seconds

Stopwatch icon

Timing

DEPTH

DIVE TIME

Remaining time during which XP-H

cannot be used

in computer mode

Gauge Mode

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Diving with microbubble (MB) levels

8 Diving with microbubble (MB) levels

NOTE:

The following chapter deals with the characteristics of diving with microbubble (MB) levels.

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. SUBGEAR has equipped XP-H 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. XP-H features 6 microbubble levels (L0-L5). Level L0 corresponds to SUBGEAR’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, XP-H 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, XP-H 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 XP-H prior to the dive and during the dive ignores the recommended stops XP-H will automatically adjust the setting to level L3 or lower.

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Diving with microbubble (MB) levels

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

When two XP-H 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.

NO STOP

3m/10ft

6m/20ft

9m/30ft

12m/40ft

15m/50ft

Depth

Stop depth

MB level

NO STOPNO STOP

STOP

DECO

STOP

DECO

NO STOP

Microbubble accumulation at the end of dive

Time

Decompression values

Level stop values

Decompression obligation

8.2 Terminology

This chapter will exclusively deal with terminology and display features used while diving with MB levels.

8.2.1 Display during MB no-stop phase

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

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

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Diving with microbubble (MB) levels

NOTE:

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

qualitative information is always visible on the display in form of the nitrogen loading bar. In particular, when the L0 no-stop time is less than three minutes, the nitrogen bar will ﬂash. This will help you avoid entering inadvertently into decompression.

8.2.2 Display during level stop phase

Lowest level stop depth

Total ascent time (14min)

3min Level stop duration

MB no-stop phase

Time

Depth

Level stop duration

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

Level stop depth

The deepest level stop is displayed.

Total ascent time

including level stops

Level stop phase

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

35.7m

9m/30ft

6m/20ft

3m/10ft

STOP

L O W

CNS O2%

DEPTH

DIVE TIME

Nitrogen loading bar

relative to LO

Tank pressure > Temperature

> MB level active

> No-stop time or deco information relative to L0 > Temperature and time of day > (Tank pressure)…

8.3 Preparation for a dive with MB levels

8.3.1 Setting the MB level

To change the MB level XP-H must be in user mode (time of day display).

1. Push

or until the symbol for MB levels

appears.

2. Confirm that you wish to change the displayed MB level by pushing

3. Change MB level by pushing or .

Confirm the selected MB level with .

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

XP-H 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 .

NOTE:

MB levels have an inﬂuence on the dive planner.

or until

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Diving with microbubble (MB) levels

8.4 Functions during the dive with MB levels

8.4.1 Level stop information

MB no-stop time

While diving with MB levels L1 to L5 XP-H will display the MB nostop time instead of the ordinary no-stop time. Within the MB nostop time no level stops are required. “NO STOP” and the MB level symbol

are visible. The remaining

MB no-stop time is shown in minutes.

NOTE:

• Information and alarms for MB no-stop time and ordinary no-stop time are the same.

• 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.

Level stop

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

STOP

appears. The

STOP

arrow ﬂashes for 8 seconds and an audible attention beep goes off. To complete the dive without cascading to a lower MB level, all requested level stops must be observed. The deepest level stop is displayed in metres (feet). The display “2: 3m “ (“2: 10ft”) means that a level stop of 2 minutes at a depth of 3 metres (10 feet) has to be observed. Deco information relative to L0 is shown on an alternate display (see ). When a level stop has been ﬁnished, the next higher level stop – if present – is displayed. When all level stops have been observed, the arrow

STOP

extinguishes and “NO STOP” reappears. The indication

of time shows the MB no-stop time again.

DEPTH

NO STOP

DIVE TIME

MB no-stop time

Nitrogen loading bar

relative to L0

STOP

CNS O2%

DEPTH

DIVE TIME

Deepest level

stop depth

Total

time of

ascent

Level stop

duration

Level stop icon

STOP

CNS O2%

DEPTH

DIVE TIME

Level stop ignored

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English

WARNING

The attention message “Level stop ignored” is activated if the requested level stop is not observed. An attention beep* goes off and the arrow

STOP

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

STOP

CNS O2%

DEPTH

DIVE TI ME

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. XP-H 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” or via Dive.Log.

8.4.2 Total time of ascent

XP-H displays the level stop information and the total time of ascent. This includes the time of ascent as well as all level stops.

NOTE:

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

prescribed

ascent rate. Total time of ascent can be subject

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

STOP

CNS O2%

DEPTH

DIVE TIME

Total ascent time

Diving with microbubble (MB) levels

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Diving with microbubble (MB) levels

8.4.3 Decompression obligation

XP-H 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)

• If the nitrogen loading bar flashes (less than 3 minutes to deco): ascend slowly a few metres/feet.

WARNING

At the beginning of a decompression phase an attention beep goes off and the

DECO

symbol flashes for 8 seconds. In order to prevent a dive with long decompression stops it is recommended that you ascend a few metres/feet on seeing this message.

If decompression stops become obligatory, the

DECO

symbol will be displayed. The total ascent time will now also contain a decompression stop.

8.4.4 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, XP-H shows

STOP

DECO

and

STOP

(level stop). The indicated duration

refers to level stop duration.

Since level stops are more restrictive than decompression stops, when all decompression obligations have been observed the display changes from

STOP

DECO

STOP

only.

DIVE TIME

STOP

DECO

CNS O2%

DEPTH

STOP

DECO

CNS O2%

DEPTH

DIVE TIME

Decompression obligation

Level stop information

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English

Diving with microbubble (MB) levels

MB level

3m/10ft

Deco stop duration

Level stop duration

Depth

Time

STOP

DECO

STOP

DECO

STOP

NO STOP

Level stop duration

Decompression stop depth = level stop depth

8.5 Complete a dive with MB levels

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

If the MB level has been reduced during the dive, XP-H 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 XP-H 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, XP-H might immediately request level stops. To complete the dive with the initially set MB level all level stops must be observed.

S L O

Page 38

PDIS (Profile DependENT Intermediate Stop)

9 PDIS (Profile Dependent Intermediate Stop)

9.1 Introduction to PDIS (Profile-Dependent Intermediate Stop)

The main purpose of a dive computer is to track your nitrogen uptake and recommend a safe ascent procedure. Diving within the so called no-stop limits means that at the end of the dive you can ascend directly to the surface, albeit at a safe ascent rate, while for dives outside of the no-stop limit (so-called decompression dives), you must perform stops at certain depths below the surface and allow time for excess nitrogen to be expelled from your body before finishing the dive.

In both cases, it can be beneficial to stop for a few minutes at an intermediate depth between the maximum attained depth during the dive and the surface or, in case of a decompression dive, the first (deepest) decompression stop.

An intermediate stop of this kind is beneficial as soon as the ambient pressure at that depth is low enough to ensure that your body is predominantly offgassing nitrogen, even if under a very small pressure gradient. In such a situation, you can still cruise along the reef and enjoy the dive, while your body gets a chance to slowly release nitrogen.

In recent times, so called “deep” stops have been introduced in some dive computers and tables, defined as half the distance from the maximum reached depth and the surface (or the lowest decompression stop). Spending 2 or 15 minutes at 30m/100ft would result in the same deep stop of 15m/50ft. With PDIS, as the name suggests, XP-H 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 continuosly 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)

9.2 How does PDIS work?

The mathematical decompression model in XP-H, called ZH-L8 ADT MB, 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!

Page 40

PDIS (Profile DependENT Intermediate Stop)

9.3 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, XP-H 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 XP-H 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

above the indicated depth. The countdown timer

disappears and the PDIS value is replaced by the label YES as an indication that you have performed the PDI stop;

- you have descended by more than 0.5m/2ft below the PDIS. The countdown timer disappears and will reappear again, starting at 2 minutes, the next time you ascend to the PDIS depth;

- you have ascended by more than 3m/10ft above the PDIS. The PDIS value and countdown timer are replaced by the label NO to indicate the fact that you have not performed the PDI stop.

If XP-H 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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NOTE:

XP-H 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.

PDIS (Profile DependENT Intermediate Stop)

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Dive planner

IV Dive planner

PLn: XP-H

has a dive planner which allows the planning of no-stop dives.

Basis of the planning: • selected fraction of oxygen and MOD

• 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

1 Planning a no-stop dive

To select the dive planner XP-H must be in user mode (time of day display). Push or until the symbol for the dive planner PLn appears.

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

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

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

Confirm the displayed interval with

(if applicable). With and set the depth for which you want to know the no-stop time.

Depths deeper than the MOD for the selected gas (O

mix) are not displayed.

On page 27 you will find further information and safety considerations regarding the no-dive warning.

2 Leaving the dive planner

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

Input of the surface

interval by pushing

Enter the dive planner

No-stop time

Set desired depth

( and )

CNS O2%

Dive planner icon

Select dive planner

until PLn

if rep. dive

No-dive warning (Do Not Dive)

Duration of the warning

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V Logbook

1 Survey

A dive is entered in the logbook if the dive time is longer than 2 minutes. XP-H records the profiles of about 15 hours of diving. This information can be transferred to a PC with the standard infrared interface (IrDA) and the Windows

software Dive.Log. All dives in the memory can be displayed directly

on the dive computer.

2 Operation

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

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

With

you enter the logbook. The most recent dive is displayed (dive number 1). There are 3 pages for each dive.

Dive time

Battery performance

mix

From here you can:

a) get more information about the

displayed dive by pushing

XP-H displays further information about the selected dive.

b) select other dives. Each time you push

or causes a jump to the next or previous dive.

At the end of the logbook

XP-H displays statistic information ->45.

Dive number

Date of the dive

Logbook icon

S L O

DEPTH

DIVE TIME

Max depth

Page 1

Surface interval

V Logbook

Page 44

Operation

Push to get more information about the dive.

Gas used gives the consumed gas amount on that dive.

If a dive is started within adaptation time (after a change of altitude), the adaptation time is displayed instead of the surface interval.

Further possible information about the dive:

DESAT Desaturation was reset before

the dive by removing the battery (page 1, 2)

S L O

Too fast ascent* (page 1) Battery quality factor has been 3 bars or

less during the dive (page 1, 2, 3)

STOP

DECO

Ignored decompression stop* (page 1)

Ignored decompression stop* (page 3) No-dive warning after the dive (page 1)

Altitude range (page 2)

*Alarms during the dive

gets you back to the dive list (first level screen within logbook). From here you can advance to the

next dive of interest and press to retrieve more information about that dive etc.

Repetitive dive number

Starting time

CNS value at the end of the dive

Page 2

Minimum temperature

Altitude range (if >0)

Page 3

Duration of surface interval

(only with repetitive dives)

SOS if applicable

Page 4

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VI Settings

Statistic information

From the time of day display you can get the following statistic information over all dives. Push , and :

Leaving the logbook

By pushing once or twice

you can exit the

logbook.

The logbook closes automatically after 3 minutes without operation.

VI Settings

1 Menu "set 1"

With menu "set 1" or Dive.Log you can configure the following items (dive functions):

Setting Range Default Page

• Depth alarm

• Dive time alarm

• Safety stop time

• Maximum partial pressure of oxygen (ppO2max)

• Tank pressure warning and alarm

• Time limit to reset the O2% mix to air

• PDIS

• Unit system

• Tank pressure unit

• Salt water

• Backlight duration

• Audible attention signals

• Water contacts

• Reset desaturation

5-100m / 15-330ft 5-195 min off, 1-5 min 1,2-1,6bar/off

warning 50-200bar / 750-3000psi, alarm 20-120bar / 300-1750psi 1-48h/no reset on / off metric/imperial

bar / psi on / off 2-12s / push on/off on/off (Dive.Log: selective) on/off on/off

40m/130ft 60min 3min 1,4bar

100bar/1450psi 40bar/600psi no reset off (depends on region) bar on 6s on on no reset

45 46 46 46

46 46 46

47 47 45 47 47 48

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.

Setting the dive depth alarm

1. Confirm that you wish to change the depth alarm by pushing

2. Change the value in increments of 1m (5 ft) by pushing

or .

3. Switch between 'on' or 'off' by pressing .

4. Confirm the setting with .

S L O W

DEPTH

DIVE TIME

Deepest dive

Longest dive

Cumulative bottom time

Number of dives

Page 46

Settings

Setting the dive time alarm

1. Confirm that you wish to change the dive time alarm by pushing .

2. Change the value in increments of 5 minutes by pushing or .

3. Switch between 'on' or 'off' by pressing

4. Confirm the setting with .

Setting the safety stop counter time

1. Confirm that you wish to change the safety stop counter time by pushing .

2. Change the value in increments of 1 minute by pushing or .

3. Confirm the setting with

Setting the maximum partial pressure of oxygen (ppO2 max)

1. Confirm that you wish to change the ppO

max by pushing .

The current value starts to flash.

2. Change the value in increments of 0.05bar by pushing or .

3. Confirm the selected value with .

Setting the Tank pressure warning and alarm

1. Confirm that yo.u wish to change the tank pressure warning or alarm by

pushing

2. Change the warning value in increments of 5 bar (50 PSI) by pushing

or .

3. Change the alarm value in increments of 5 bar (50 PSI) by pushing

or .

4. Confirm the setting with .

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

1. Confirm that you wish to change the time limit of the reset by pushing

. The current setting starts to flash.

2. Change the time limit by pushing or .

(1 - 48hrs or no reset: "– – h")

3. Confirm the selected value with

Setting the PDIS

1. Confirm that you wish to change PDIS

2. Switch between 'on' or 'off' by pressing .

4. Confirm the setting with .

Selecting the units

1. Confirm that you wish to change the units by pushing

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

2. Switch with

between "m" and "ft".

3. Confirm the selected unit with . "°C" or "°F" starts to flash.

4. Switch with between "°C" and "°F".

5. Confirm the selected unit with .

ppO2 max

Time limit to reset O2 mix to air

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Settings

Selecting the Tank pressure units

1. Confirm that you wish to change the tank pressure units by pushing .

2. Switch with between "bar" and "PSI".

3. Confirm the selected unit with

Selecting the water type

1. Confirm that you wish to change the water type by pushing

2. Switch with between "on" or "off"

4. Confirm the setting with .

Setting the backlight duration

1. Confirm that you wish to change the backlight duration by pushing

2. Change the value in increments of 1 second by pushing or .

4. Confirm the setting with .

Switching the audible attention signals on and off

With this option you can switch off the audible attention signals only (the audible alarms remain active). Refer to page 19 to see this distinction.

1. Confirm that you wish to change the setting of the audible attention signals by pushing

. "On" or "off" starts to flash.

2. Switch between "on" or "off" by pressing .

3. Confirm the setting with .

Switching the water contacts on and off

On submerging in water the water contacts switch on XP-H automatically.

WARNING

If you chose the option "Water contacts off", XP-H will turn on with a delay of up to 1 minute into the dive. This will affect functioning of the computer. Make sure that the computer is on before starting the dive.

1. Confirm that you wish to change the setting of the water contacts by pushing

. "On" or "off" starts to flash.

2. Switch between "on" or "off" by pressing .

3. Confirm the setting with .

Page 48

Settings

Resetting the remaining saturation

WARNING

Diving after a reset of the remaining saturation may lead you into potentially hazardous situations which could result in death or serious injury. After a reset of the remaining saturation do not dive for at least 48 hours. If you dive after resetting the remaining saturation the computer will miscalculate your decompression, which may result in serious injury or death. Reset the remaining saturation only if you know you will not be diving, flying or going to higher altitude for the next 48 hours.

Resetting the desaturation should only be done when there is a valid reason, e.g. loaning the computer to somebody who has not dived in 48 hours or more. When the computer itself has remaining saturation you must assume full responsibility for the consequences of resetting the remaining saturation.

1. Confirm that you wish to reset the displayed saturation by pushing

"On" starts to flash.

2. Switch between "on" or "off" by pressing .

3. Confirm the setting with . If you have selected "off", "Code" and "000" appear.

4. Set the first digit by pushing

and . Confirm with .

Repeat point 4 for the next 2 digits. If you entered the right code the

desaturation will be reset to zero (desat off).

Code: 313

2 Menu "set 2"

With menu "set 2" or Dive.Log you can configure the following items:

Setting Range Default Page

• Alarm clock

• UTC zone

• Time of day

• 24 or AM/PM setting

• Date

• Display contrast

• IrDA speed (set 2 only)

• Sound

• Show XP-H electronic ID

0 - 23h 59min, on/off ±13hrs, increments: 15min hours:minutes 24 (off) / AM/PM (on)

1 (low) -12 (high) low / high on / off

12:00, off

4 low on

48 49 49 49 49 49 50 50 50

Starting from the time of day display push

or until "set 2" appears. Confirm that you wish to enter into the menu of "set 2" by pushing . Once entered into the menu you can scroll with and through the menu.

Setting the alarm clock time

The alarm clock goes off only at the surface. "Sound" must be turned "on" in "set 2".

1. Confirm that you wish to set the alarm time by pushing

The hours start to flash.

2. Set the hours by pushing

or .

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Settings

3. Confirm the setting with . The minutes start to flash.

4. Set the minutes by pushing or .

5. Confirm the setting with . "On" or "off" starts to flash.

6. "On" indicates "activated" (time of day display shows ), "off" indicates "deactivated". Switch between "on" or "off" by pressing

7. Confirm the selected status with .

Setting the UTC offset (coordinated universal time)

This setting allows you to quickly set the watch to a new time zone without affecting the actual time setting.

1. Confirm that you wish to set the UTC offset by pushing

The hours start to flash.

2. Set the hours by pushing

or (±13hrs).

3. Confirm the setting with . The minutes start to flash.

4. Set the minutes in increments of 15 minutes by pushing or .

5. Confirm the selected status with .

Adjusting the time of day

You can adjust it to your time zone either in this menu or using the UTC offset (see above).

1. Confirm that you wish to adjust the time of day by pushing

The hours start to flash.

2. Set the hours by pushing or .

3. Confirm the setting with . The minutes start to flash.

4. Set the minutes by pushing

or .

5. Confirm the setting with .

Selecting 24 hours or AM/PM setting

1. Confirm that you wish to change the setting by pushing

"On" or "off" starts to flash.

2. Switch with between "on" (AM/PM) and "off" (24h).

3. Confirm the setting with .

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

Adjusting the date

1. Confirm that you wish to adjust the date by pushing

The first day (month) starts to flash.

2. Set the day (month) by pushing

or .

3. Confirm the setting with . The month (day) starts to flash.

4. Set the month (day) by pushing or .

5. Confirm the setting with

. The year starts to flash.

6. Set the year by pushing or .

7. Confirm the setting with .

Adjusting the display contrast

1. Confirm that you wish to adjust the display contrast by pushing

The current setting starts to flash.

2. Set the contrast by pushing

or .

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

3. Confirm the setting with .

Time of day

Date (24h setting)

Day / Month / Year

Date (AM/PM setting)

Month / Day / Year

Page 50

Settings

Selecting the IrDA speed

The default setting is low. For faster downloads you can set it to high, but not all IrDA interfaces are compatible with high.

1. Confirm that you wish to change the IrDA speed by pushing

"Lo" (low) or "hi" (high) starts to flash.

2. Switch with between low and high.

3. Confirm the setting with

Low: 9600bits / second High: max 57 600bits / second

Switching the sound on and off

WARNING

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

Confirm that you wish to change the setting by pushing .

"On" or

"off" starts to flash.

2. Switch with between "on" and "off".

3. Confirm the setting with . If you have selected "off", "Code" and "000" appear.

Set the first digit by pushing and

. Confirm with

Repeat point 4 for the next 2 digits. If you entered the right code the

sound will be turned off.

Code: 313

Setting the "sound" to "off" applies also to surface functions (mountain alarm, wake-up

alarm, change of altitude range).

Showing the hardware electronic ID of XP-H

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

ID Number

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English

VII Appendix

1 Technical information

Operating altitude: With decompression information: sea level up to approx. 4000m

(13 000ft); without decompression, above approx. 4000m (13000ft): automatic gauge mode (unlimited)

Max displayed depth: 120m (395ft), resolution between 0.8m and 99.9m: 0.1m, >99.9m: 1m.

The resolution in feet is always 1 foot.

Decompression calculation depth range: 0.8 to 120m (3 to 395ft)

Maximum environment pressure: 13bar (189psi)

Clock: Quartz clock, time, date, dive time display up to 199 minutes.

Maximum tank working pressure: 300bar (4350 PSI)

O2 concentration: Adjustable between 21%O2 (compressed air) and 50% O2.

Note that XP-H high pressure hose and connection are delivered with standard materials which are useable up to 40% O2 mix. For special oxygen cleaning please contact your local official SUBGEAR service.

Operating temperature: -10° to +50°C (14°F to 122°F)

Power supply: CR2450, recommended brands: PANASONIC, DURACELL,

RENATA, ENERGIZER, SONY, VARTA.

Life of the battery: 2-3 years or 200-300 dives. Actual life of the battery depends on

the quantity of dives per year, the use of the backlight and the length of the dives. In cold water the life of the battery is reduced. Not all CR2450 batteries are the same, and low quality batteries can have very short life.

2 Maintenance

Check XP-H high pressure connection and hose condition periodically and service them at least every 2 years. Rinse XP-H carefully with fresh water after each use and to have the batteries changed when needed ->52. To avoid possible problems with your XP-H, the following recommendations will help assure that it will give you years of trouble free service:

Page 52

Appendix

WARNING

• Avoid dropping or jarring your XP-H.

• Do not allow your XP-H to be exposed to direct, intense sunlight.

• Rinse your XP-H thoroughly with fresh water after each dive.

• Do not store your XP-H in a sealed container; make sure there is free ventilation.

• If there are problems with the water contacts, use soapy water to clean XP-H and dry it thoroughly. The surface of your XP-H housing can be treated with silicone grease. Do not apply grease to the water contacts!

• Do not clean XP-H with liquids containing solvent (apart from water).

• Check the battery capacity before each dive ->14.

• If the battery icon appears, replace the battery ->52.

• Diving with a weak battery: XP-H may stop working during the dive, service icon and error code "E3" or "E6" appear. Close the dive and replace the battery ->52.

• On the surface: if service icon and error code "E3" appear, replace the battery ->52.

All error codes other than E3: XP-H must not be used for any further

dives. Take your dive computer to an authorized SUBGEAR dealer.

2.1 Connecting the high pressure hose

XP-H may only be used with SUBGEAR high pressure hose. If you need to remove or reconnect the high pressure connection, two wrenches must be used as shown in the figure. When connected directly to a high pressue hose, be sure that the swivel is inserted with proper size and material O ring. When quick release system is assembled, bayonet the O-ring between XP-H

and the replaces the swivel. Quick release system attached to the XP-H is shown at the picture. Be sure that high pressure is not applied when connecting or disconnecting the XP-H from the quick release. The bayonet must be fully pushed in when cover is twisted to locking position. In the correct locking position the bayonet moves forward approx 4mm (1/5 of an inch) and stays securely locked. Apply the high pressure to the system only after quick release has been correctly closed.

2.2 Replacing the battery (Battery kit includes battery and Teflon coated o-ring)

WARNING

Removing the battery clears all physiological data including saturation. This means that for a repetitive dive the computer will not compute correctly. Diving after replacing the battery when there is desaturation time left on the computer can lead to serious injury or death from decompression sickness. Change the battery only under these conditions:

• After a dive if you know you will not be diving, flying or going to higher altitude for the next 48 hours.

• Before a dive if there is no desaturation time left on the computer. The change must be made with particular care in order to prevent water from seeping in. The warranty does not cover damages due to an improper replacement of the battery.

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Appendix

WARNING

Never touch the metal surface of the battery with bare fingers. The two battery poles must never be short circuited.

Procedure:

To replace the battery you need a coin or a universal tool and a clean cloth.

WARNING

• A leaking battery cap may lead to the destruction of XP-H by water seeping in or cause XP-H to switch off without prior notice.

• Always open the battery compartment in a dry and clean environment.

• Only open the battery compartment to replace the battery.

1. Dry XP-H with a soft towel.

2. Turn the battery cap with a coin or an universal tool.

3. Remove the battery cap.

4. Remove the o-ring carefully. Do not damage the sealing surfaces.

5. Remove the battery. Do not touch the contacts.

universal tool

Protect the environment and dispose the battery properly.

WARNING

If you notice traces of seeping water, damages, or other defects on the o-ring, do not use XP-H for further dives. Take it to an authorized SUBGEAR dealer for check and repair.

6. Always insert a new o-ring when you replace the battery and dispose the old o-ring. Make sure that the new o-ring is in perfect condition, and that o-ring, o-ring groove and the sealing surfaces are free of dust and dirt.

If necessary, clean the parts with a soft cloth. Fit the o-ring in the o-ring groove of the battery cap.

WARNING

7. Use only an original SUBGEAR o-ring. This o-ring is Teflon coated and does not require additional lubrication.

8. Do not lubricate the o-ring as the lubricant will chemically attack the battery cap.

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Appendix

WARNING

9. Check the proper polarity of the battery. XP-H can be damaged if you do not insert the battery correctly.

Insert the new battery, with "+" pointing outwards, into the battery

compartment.

After battery replacement XP-H will perform an automatic test (8s) and gives a short beep when the test is done.

WARNING

10. The battery cap can be installed with a ±120° offset. The alignment circles are there to ensure proper positioning of the cap. If the rotation is stopped before alignment, watertightness may not be ensured. If the rotation is forced beyond the alignment, the cap may break. Damage to XP-H due to improper placement of the battery cap is not covered by warranty.

Alignment circles

Push the battery cap firmly down and turn it clockwise until the two circles are aligned.

11. Check XP-H by switching on

->14 .

3 Warranty

The warranty only covers dive computers which have been bought from an authorized SUBGEAR retailer. The warranty is given for a period of two years. Repairs or replacements during the warranty period do not increase the warranty period. In order to put forward a warranty claim: send the dive computer together with a dated receipt of the purchase to your authorized retailer or an authorized servicing point. SUBGEAR reserves the right to determine the merits of a warranty claim and to determine whether the computer will be repaired or replaced.

Excluded are faults or defects due to:

• excessive wear and tear;

• exterior influences, e.g. transport damage, damage due to bumping and hitting, influences of weather or other natural phenomena;

• servicing, repairs or the opening of the dive computer by anybody not authorized by the manufacturer;

• pressure tests which do not take place in water;

• diving accidents;

• improper placement of the battery cap.

Your SUBGEAR dive instrument is manufactured with high-quality components, which can be recycled and reused. Customers living in the European Union can contribute to the protection of environment and health, by returning old products to an appropriate collection point in your neighborhood according to EU Directive 2002/96/EC. Products marked with the recycling symbol to the left must not be placed in the normal household waste.

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English

Appendix

4 Index

Active backlight __________________________15 Alarm clock _________________________ 16, 48 AM/PM _________________________________49 Ascent rate __________________________ 19, 22 Audible attention signals_______________ 19, 47 Backlight ________________________________15 Battery alarm ____________________________19 Battery condition, Checking the… __________14 Battery lifetime ___________________________51 Battery replacement ______________________52 Beep, Switch off the… ____________________47 CNS O2 ______________________ 17, 18, 19, 23 Date _______________________________ 14, 49 Deco data during decompression phase _ 17, 25 Deco data during no-stop phase _______ 17, 24 Decompression stop, Ignored… ________ 19, 25 Depth, current ___________________________21 Display contrast _________________________49 Desaturation time ____________________ 14, 26 Desaturation, reset the… __________________48 Dive ____________________________________17 Dive.Log _________________________10, 11, 43 Dive planner _____________________________42 Dive time ________________________________21 Dive, end of a dive _______________________26 E3, E6 error code ________________________52 Electronic ID _____________________________50 Fly, no-fly time _______________________ 14, 26 Gauge Mode ____________________________29 Gas mixture, Setting… ____________________20 IrDA _________________________________ 9, 50 Light ___________________________________15 Logbook ________________________________43 Maintenance ____________________________51 Max depth __________________________ 17, 23 MB Levels_______________________________31 MOD ________________________ 18, 19, 20, 23 Mountain lakes, Diving in… _______________27 Nitrogen loading bar graph ________________24 Nitrox __________________________________18 No-dive warning _____________________ 26, 42 No-stop time ________________________ 17, 24 O2% mix, Set up… _______________________20 O2 fraction _______________________ 17, 18, 20 O2 partial pressure _________________ 18, 19, 23 O2 partial pressure, ppO2 max ___ 18, 20, 23, 46 O2 toxicity ________________________18, 19, 23 Operating XP-H ______________________ 4, 5, 9 PC, transfer to PC (logbook) ____________ 9, 11 PDIS ___________________________________38 ppO2, see O2 partial pressure Push buttons __________________________ 4, 9 Reset to air ______________________________46 Residual Nitrogen bar graph _____ __________26 Safety stop timer _________________________26 Set 1 ___________________________________45 Set 2 ___________________________________48

Setting the ppO

max _________________ 20, 46 Sound, on /off _______________________ 19, 50 SOS mode ______________________________16 Surface interval ___________________ 14, 42, 43 System __________________________________9 Technical information _____________________51 Time of day (display) __________________ 13, 49 Unit system _____________________________46 UTC ____________________________________49 Warnings _______________________________19 Water calibration ________________________21 Water contacts ______________________ 10, 47

Page 56

175 Allée Belle Vue

Nova Antipolis

Les Terriers Nord

06600 Antibes

France

Johnson Outdoors Vertriebsgesellschaft mbH

Johann-Höllfritsch-Str.47

90530 Wendelstein

Germany

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El Cajon, CA 92020

USA

Unit 21 380 Eastern Valley Way

Chatswood NSW 2067

Australia

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18 Ka Yip St.

Chai Wan-Hong Kong

Mitsubishi Juko Yokohama Bldg. 22F

3-3-1 Minatomirai, Nishi Ku

Yokohama 220-0012

Japan

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