SubGear xp-3h User manual
XP-3H
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2
WARNING
You must carefully read and understand this entire manual before using your SUBGEAR Subgear
XP-3H.
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 Subgear XP-3H.
Guidelines for the use of Subgear XP-3H
The following guidelines for using Subgear XP-3H 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.
• Subgear XP-3H is designed for dives with compressed air (21%O2) and Nitrox (22 to 100%O2)
only. Do not use Subgear XP-3H for dives made with other mixed gases.
• It is absolutely necessary to check the set mixture before each dive and to compare it to the
gas mixture currently used. Always remember: setting an incorrect mixture carries an inherent
risk of decompression sickness and/or oxygen toxicity! Maximum deviation from the measured
mixture must not exceed 1%O2. An incorrect gas mixture can be lethal!
• Only use Subgear XP-3H for diving with an independent breathing apparatus. Subgear XP-3H
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.
• Subgear XP-3H has a ppO2warning. The default limit is set at 1.4bar ppO2max. It can be
changed between 1.2 and 1.6bar.
• Frequently check the "oxygen clock" (CNS O2). Ascend and finish the dive if the CNS O2exceeds 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. Subgear XP-3H 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 Subgear XP-3H 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. Subgear XP-3H does not substitute for a dive buddy.
• Only make dives that are appropriate to your level of dive training. Subgear XP-3H does not
increase your knowledge of diving.
Safety considerations
1 SAFETY CONSIDERATIONS
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
Subgear XP-3H! Seek IMMEDIATE treatment for decompression sickness should any of these signs
or symptoms occur after a dive! There is a direct correlation between the effectiveness of treatment
and the delay between the onset of symptoms and the treatment for decompression sickness.
• Only dive with Nitrox after you have been thoroughly instructed by a recognised institution.
Repetitive dives
• Do not start your next dive before your CNS O2% status has dropped below 40%.
• When diving with Nitrox, make sure your surface interval is long enough (just like diving with
compressed air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient
time to leave the body.
• Match gas mixture to the intended dive.
• Do not attempt a repetitive dive if the no-dive warning is visible on the display.
• Plan a day without diving once a week.
• If you have to change computers, wait at least 48 hours before carrying out your next dive.
• Diving after a reset of the remaining saturation (reset, see page 71, or battery replacement,
see page 76) 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 Subgear XP-3H prohibits via the flashing altitude range
number (see page 30).
Flying after diving
• After diving, wait at least 24 hours prior to flying.
Subgear XP-3H 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.
4
Introduction
Congratulations on purchasing Subgear XP-3H 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 Subgear XP-3H 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.
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 Subgear XP-3H.
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
Subgear XP-3H.
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
Valid only for dives with 2 / 3 gas mixtures
Audible signals
Audible attention signal
4s 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.
5
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 ppO2
Alarm clock icon / Infrared icon
Nitrogen loading bar (dive)
Residual Nitrogen bar (surface)
Desaturation
Battery condition
O2mix
Oxygen toxicity CNS O2%
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
O2mix icon (input)
Setting icon
Service icon
Tank pressure
Max depth
Maximum Operating Depth (MOD)
Dive number
CCR: AMD (Absolute Minimum
Depth SP2) Icon for safety stop timer
AMPM
AMPM
AM/PM icon
DES
DESAT
Desaturation icon
Operating scheme
"->" means "more information at page"
on
off
CCR
/
/
on
off
CCR
Time of day display
• CCR on / off -> 68
• Depth alarm -> 68
• Dive time alarm -> 69
• Safety stop time -> 69
• ppO2 max -> 69
• Tank pressure alarms -> 69
• Reset to air -> 69
• PDIS -> 69
• Unit system -> 70
• Unit system, tank -> 70
• Salt water -> 70
• Light time -> 70
• Attention beep -> 70
• Water contacts -> 70
• Reset desaturation -> 71
• Alarm clock ->72
• UTC time zone ->72
• Time of day ->72
• Date ->72
• 24h / AM PM ->72
• LCD contrast ->73
• IrDA speed ->73
• Sound on / off ->73
• Electronic ID ->73
Off
SP1
ppO2%
->52
Gas 1
O2%
->22
SP2
ppO2%
->52
Gas 2
O2%
->->45
Bail
O2%
->52
Gas d
O2%
->45
MB Level
L0-L5 ->34
Gauge mode
->32
Altitude
adjustment
->30
Set 2
->71
Set 1
->68
Dive
planner
->62
Logbook
->65
•(Desat. time CNSO2% ) ->15
•Date ->15
•Battery condition ->15
Enter
/ Scroll / Change setting
Backlight
Exit
Without operation the display switches automatically back to the time of day display and after 3 minutes
the display switches off. See also page 14.
Quick reference
MB level symbol
PDIS icon
6
Operating scheme
S
L
O
W
DEPTH
DEPTH
DIVETIME
DIVETIME
Logbook
Display switched off
Gas 1 O2% Diveplanner
PLn
Surface
interval
Statistic information
Deepest
dive
Longest
dive
Cumulative
bottom time
Number
of dives
No-stop time
No-stop dive
Oxygen
concentration
+
–
ppO2max
+
–
()
After the oldest dive:
+
–
Depth
+
–
Repetitive
dive number
Starting
time
CNS O2%
at the end
Minimum
temperature
Altitude
range (if>0)
CNS O2%
Dive
number
O2mix
Dive time
Date of
the dive
Battery
performance
Max
depth
+
–
S
L
O
W
DEPTH
DEPTH
DIVETIME
DIVETIME
Page 3
Page 2
Page 1
Gas d O2%
Oxygen
concentration
+
–
ppO2max
+
–
Exit
Exit
Conrmation Conrmation
Gas 2 O2%
Oxygen
concentration
+
–
ppO2max
+
–
Conrmation
SP1 O2% and ppO2
Oxygen
concentration
+
–
ppO2
+
–
Bail O2%
ppO2max
+
–
Conrmation Conrmation
Oxygen
concentration
+
–
SP2 ppO2
ppO2
+
–
Conrmation
Surface
interval
if applicable
SOS if
applicable
Page 4
on
off
CCR
bar
Bottom
time
Decompression dive
STOP
STOP
NO
DECO
DECO
CNS O2%
DEPTH
DEPTH
DIVETIME
DIVETIME
+
–
DEPTH
DEPTH
DEPTH
DEPTH
DIVETIME
DIVETIME
7
ENGLISH
List of chapters
TABLE OF CONTENTS
1 Safety considerations ............................................................................................. .............. 2
Introduction ............................................................................................................. .............. 4
Important remarks concerning signal words and symbols ................................ .............. 4
Quick reference ...................................................................................................... .............. 5
2 System and operation ............................................................................................ .............. 9
2.1 System description ........................................................................................... .............. 9
2.2 Operation ......................................................................................................... .............. 9
2.3 Push buttons .................................................................................................... .............. 9
2.4 Water contacts ................................................................................................. ............ 10
2.5 Dive.Log dedicated software application ........................................................... ............ 10
2.6 Switching on the display ................................................................................... ............ 14
2.7 How to navigate Subgear XP-3H at the surface ................................................ ............ 14
2.8 Checking the desaturation time ........................................................................ ............ 15
2.9 Checking the surface interval ........................................................................... ............ 15
2.10 Displaying the date .......................................................................................... ............ 15
2.11 Checking the battery condition ......................................................................... ............ 15
2.12 Active backlight ................................................................................................ ............ 16
2.13 Switching off the display ................................................................................... ............17
2.14 Alarm clock ....................................................................................................... ............ 17
3 SOS mode ................................................................................................................ ............ 17
4 Diving with Subgear XP-3H .................................................................................... ............ 18
4.1 Terminology / Symbols ...................................................................................... ............ 18
4.1.1 General terminology / Display during no-stop phase ............................... ............ 18
4.1.2 Display during decompression phase ..................................................... ............ 19
4.1.3 Nitrox information (O2information) .......................................................... ............ 20
4.2 Attention messages and alarms ........................................................................ ............ 21
4.2.1 Attention messages ................................................................................ ............ 21
4.2.2 Alarms .................................................................................................... ............ 21
4.3 Preparation for the dive ..................................................................................... ............22
4.3.1 Setting the gas mixture and ppO2max ............................................ ............ 22
4.3.2 Preparation for the dive and function check ............................................ ............ 23
4.4 Functions during the dive .................................................................................. ............ 23
4.4.1 Immersion .............................................................................................. ............ 23
4.4.2 Setting bookmarks ................................................................................. ............ 23
4.4.3 Dive time ............................................................................................... ............ 23
4.4.4 Current depth / O2% mix ......................................................................... ............ 24
4.4.5 Tank pressure / Maximum depth / Temperature ...................................... ............ 24
4.4.6 Set max depth reached .......................................................................... ............ 24
4.4.7 Ascent rate ............................................................................................. ............ 25
4.4.8 Partial pressure of oxygen (ppO2max) / Maximum Operating Depth (MOD) ....... 26
4.4.9 Oxygen toxicity (CNS O2%) ..................................................................... ............ 26
4.4.10Nitrogen loading bar graph ..................................................................... ............ 27
4.4.11Decompression information .................................................................... ............ 27
4.4.12Safety stop timer .................................................................................... ............ 28
4.5 Functions at the surface .................................................................................... ............ 29
4.5.1 End of a dive .......................................................................................... ............ 29
4.5.2 Residual nitrogen bar graph .................................................................... ............ 29
8
List of chapters
4.5.3 Desaturation time, No-fly time and No-dive warning ............................... .............29
4.6 Diving in mountain lakes ................................................................................... .............30
4.6.1 Altitude ranges ....................................................................................... .............30
4.6.2 Decompression dives in mountain lakes ................................................. .............31
4.7 Gauge Mode .................................................................................................... .............32
4.8 Diving with microbubble (MB) levels .................................................................. .............34
4.8.1 Comparison of dives with MB level L0 and MB level L5 .......................... .............35
4.8.2 Terminology ............................................................................................ .............35
Display during MB no-stop phase ........................................................... .............35
Display during level stop phase ............................................................... .............36
4.8.3 Preparation for a dive with MB levels ...................................................... .............36
Setting the MB level ................................................................................ .............36
4.8.4 Functions during the dive with MB levels ................................................ .............37
Level stop information ............................................................................ .............37
Total time of ascent ................................................................................ .............38
Decompression obligation ...................................................................... .............39
Level stop and deco stop ....................................................................... .............39
4.8.5 Complete a dive with MB levels .............................................................. .............40
4.9 PDIS (Profile Dependent Intermediate Stop) ...................................................... .............41
4.9.1 Introduction to PDIS (Profile-Dependent Intermediate Stop) .................... .............41
4.9.2 How does PDIS work? ........................................................................... .............42
4.9.3 Diving with PDIS ..................................................................................... .............43
4.10 Diving with 2 or 3 gas mixtures ......................................................................... .............45
4.11 CCR Diving ....................................................................................................... .............52
4.11.1Preparation for the CCR dive .................................................................. .............52
4.11.2Setting the ppO2and gas mixture ........................................................... .............52
4.11.3Functions during a CCR dive .................................................................. .............55
5 Dive planner ............................................................................................................ .............62
5.1 Planning a no-stop dive .................................................................................... .............62
5.2 Planning a decompression dive ....................................................................... .............63
6 Logbook ................................................................................................................... .............65
6.1 Survey .............................................................................................................. .............65
6.2 Operation ......................................................................................................... .............65
7 Settings .................................................................................................................... .............68
7.1 Menu "set 1" ..................................................................................................... .............68
7.2 Menu "set 2" ..................................................................................................... .............71
8 Appendix .................................................................................................................. .............74
8.1 Technical information ....................................................................................... .............74
8.2 Maintenance ..................................................................................................... .............74
8.2.1 Connecting the high pressure hose ........................................................ .............75
8.2.2 Replacing the battery (Battery kit includes battery and Teflon coated o-ring) ........76
8.3 Warranty ........................................................................................................... .............77
8.4 Index ..............................................................................................................................79
9
ENGLISH
System and operation
2 SYSTEM AND OPERATION
2.1 System description
Subgear XP-3H 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
Subgear XP-3H
package. Infrared interfaces are available in
PC.
Infrared port
SUBGEAR
Subgear XP-3H
Dive.Log
Infrared Interface
(option)
2.2 Operation
On page 5 and 14 you will find an operating schematic.
2.3 Push buttons
Subgear XP-3H 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 Subgear XP-3H (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 Subgear XP-3H
Under water:
• Access alternate displays
Push buttons
Water contacts
(one located in front
and one on back,
however, inaccessible)
10
• Switch on the backlight
•
Activate the safety stop timer
(dive mode only, in depths < 6.5m / 21ft)
Gauge mode (stopwatch):
• Restart
Diving with 2 or 3 mixtures:
• Initiate switch to gasd, gas 1 or gas 2
• Interrupt switching process
• Confirm switch to gasd, gas 1 or gas 2
2.4 Water contacts
On submerging in water the water contacts switch on Subgear XP-3H automatically.
WARNING
If you have chosen the option "Water contacts off" ("set 1", ->70), Subgear XP-3H 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.
2.5 Dive.Log dedicated software application
With Dive.Log you can configure Subgear XP-3H, transfer dive data to a personal computer and
graphically display the data. To start the communication, turn on Subgear XP-3H and place it so that
its infrared port is in front of the infrared interface. If Subgear XP-3H detects an infrared device within
range appears.
Configuring Subgear XP-3H
To configure Subgear XP-3H, select "Dive Computer Settings" under "OPTIONS" on the main menu
bar of Dive.Log after having established communication between your PC and Subgear XP-3H. The
following window will appear:
System and operation
11
ENGLISH
System and operation
When making any changes to the settings via Dive.Log, you must press the "Write" icon for the changes
to take effect.
12
System and operation
The following settings may be changed with Dive.Log or via
"
set 1
"
or
"
set 2
"
directly on
Subgear
XP-3H
:
Setting Range Default Page
• CCR mode
• 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
• Gauge mode
• Alarm clock
• UTC (Universal Time Change) zone
• Time of day
• 24 or AM/PM setting
• Date
• Display contrast
• IrDA speed setting (only “set 2”)
• Sound
on / off
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
on / off
0 - 23h 59min, on/off
±13hrs, increments: 15min
hours:minutes
24 (off) / AM/PM (on)
1 (low) -12 (high)
low / high
on / off
off
40m/130ft
60min
3min
100bar/1450psi
40bar/600psi
off
bar
on
6s
1.4bar
no reset
on
on
no reset
off
12:00, off
4
low
on
68
68
69
69
69
69
70
70
70
69
69
70
70
70
71
32
72
72
72
72
72
73
73
73
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
Subgear XP-3H’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 Subgear XP-3H, 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 Subgear XP-3H’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.
13
ENGLISH
System and operation
Dive window
Dive information
panel
Dive profile
panel
Alarm
symbols
Notes panel
Dive computer
display
Tissue panel
Physiology
panel
Dive table
14
System and operation
2.6 Switching on the display
• Automatically, on submerging in water* or when adaptation to atmospheric
pressure is necessary;
• Manually, by pushing or . If switched on with all segments
light up for 5 seconds.
Afterwards the display shows the time of the day, the O2mix and the
temperature.
This display is called time of day display. Most navigation descrip-
tions start from this display. At the surface Subgear XP-3H returns
automatically to this display.
If there is a remaining saturation from the last dive or from a change of altitude,
Subgear XP-3H also displays the "do not fly" time, the "do not fly" icon, the
current altitude range and the prohibited altitude range (->30).
When Subgear XP-3H is in state of rest no information is displayed
but the atmospheric pressure is continuously monitored. If a change
in altitude range is detected, Subgear XP-3H switches on for 3 min-
utes automatically ->30.
* Only if the option
"
Water contacts on
"
(
"
set 1
"
, ->70) is chosen. See warning ->10.
2.7 How to navigate Subgear XP-3H at the surface
Starting from the time of day display you can enter into different menus.
on
off
CCR
/
/
on
off
CCR
• Enter with into the
function or sub menu.
• With you can switch
to the time of day display.
• After 3 minutes without
operation Subgear XP-3H
returns to the time of day
display.
Time of day display
• CCR on / off -> 68
• Depth alarm -> 68
• Dive time alarm -> 69
• Safety stop time -> 69
• ppO2 max -> 69
• Tank pressure alarms -> 69
• Reset to air -> 69
• PDIS -> 69
• Unit system -> 70
• Unit system, tank -> 70
• Salt water -> 70
• Light time -> 70
• Attention beep -> 70
• Water contacts -> 70
• Reset desaturation -> 71
• Alarm clock ->72
• UTC time zone ->72
• Time of day ->72
• Date ->72
• 24h / AM PM ->72
• LCD contrast ->73
• IrDA speed ->73
• Sound on / off ->73
• Electronic ID ->73
Off
SP1
ppO2
->52
Gas 1
O2%
->22
SP2
ppO2
->52
Gas 2
O2%
->->45
Bail
O2%
->52
Gas d
O2%
->45
MB Level
L0-L5 ->34
Gauge mode
->32
Altitude
adjustment
->30
Set 2
->71
Set 1
->68
Dive
planner
->62
Logbook
->65
•(Desat. time CNSO2% ) ->15
•Date ->15
•Battery condition ->15
Time of day display
15
ENGLISH
System and operation
2.8 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.
2.9 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.
2.10 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.
2.11 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).
Subgear XP-3H displays the estimated remaining battery
performance for 5 seconds as a bar graph. If the bar graph
shows 3 segments the battery warning appears ->16 and
the battery has to be replaced ->76.
Do not fly icon
No-fly time
No-dive
warning
Residual
nitrogen
bar
Oxygen toxicity
Desaturation time
Surface interval
Date
Battery condition /
performance
NO
16
System and 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 tempo-
rarily disabled. See below.
Battery performance high enough for diving.
Battery warning appears. Backlight deactivated. Replace the battery! ->76
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
Subgear XP-3H 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.
2.12 Active backlight
The display of Subgear XP-3H 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.
Keeping the backlight permanently on represents a severe strain on the battery. In warm
waters (20 °C/68 °F and above), a new battery can sustain 20-40 1-hour dives with the backlight
always on. In cold waters (4 °C/40 °F and below) the low battery warning may come on within the
first dive. For temperatures between 4°C/40 °F and 20 °C/68°F the life of a new battery will be
somewhere between 1 and 20 1-hour dives. Subgear XP-3H monitors the battery level throughout
every dive, and if the available energy drops below the warning threshold, Subgear XP-3H will
automatically disable the backlight to prevent a computer shut down.
17
ENGLISH
System and operation / SOS
2.13 Switching off the display
From the time of day display you can switch off Subgear XP-3H by pushing .
On the surface Subgear XP-3H switches off automatically after 3 minutes without operation.
2.14 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: ->72 (
"
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!
• Diving in SOS mode is extremely dangerous and you must assume full responsibility for
such behavior. SUBGEAR will assume no liability.
Time remaining until
SOS mode switches
off automatically
18
4 DIVING WITH SUBGEAR XP-3H
4.1 Terminology / Symbols
The information on the display of Subgear XP-3H varies depending on the kind of dive and the dive
phase.
For information about diving with microbubble (MB) levels see page 34. Specific
features of “Diving with two/three gas mixtures”, are described on page 45.
Specific features of “Diving with CCR”, are described on page 52.
4.1.1 General terminology / Display during no-stop phase
Temps de plongée 37 min
Durée de la plongée écoulée
Temps restant
sans palier
24 min
Profondeur actuelle
26.2m
Phase avec décompression
Phase de plongée au cours
de laquelle la remontée en
surface est autorisée
seulement lorsque les paliers
de décompression sont
effectués.
Phase sans palier
Phase de plongée au cours de laquelle la
remontée en surface est autorisée sans palier.
Durée
Profondeur
Vitesse de remontée
(seulement lors de la remontée)
CCR: SP ppO2x100
(jusqu'à CNS O2>50 %)
70 = 0,70 bar
130 = 1,30 bar
%
Profondeur actuelle
en mètres (pieds)
Profondeur maximale
Profondeur maximale
atteinte pendant
la plongée
Temps restant
sans palier
Temps restant à une
profondeur donnée,
pendant lequel la
remontée est autorisée
sans palier de
décompression (min)
Graphique charge
d'azote
Toxicité de l'oxygène
CNS O2%
(Seulement si CNS O2% > 50 %)
Temps de plongée
Durée de la
plongée (min)
DEPTH
DEPTH
NO STOP
NO STOP
DIVE TIME
DIVE TIME
Profondeur
maximale
O2 du mélange
(jusqu'à CNS O2>50 %)
CNS O
2
%
Tank pressure -> Max depth -> Temperature -> O2mix & time of the day -> Tank pressure
Diving with Subgear XP-3H
19
ENGLISH
4.1.2 Display during decompression phase
Total ascent time to surface (7min)
6m
35.7m
Decompression rangeNo-stop range
3m
Time
Depth
Decompression
stop depth
Deepest stage is
displayed.
Decompression stop
duration
Prescribed duration of the
decompression stop at the
displayed decompression
stage (minutes).
Total ascent time
Including decompression
stops in minutes.
Decompression stop
All required decompression
stops must be observed.
Deepest
decompression
stop depth
2min
Decompression
stop duration
STOP
STOP
NO
DECO
DECO
CNS O
2
%
DEPTH
DEPTH
DIVE TIME
DIVE TIME
CCR: SP ppO2x100
(until CNS O2% >50%)
70 = 0.70 bar
130 = 1.30 bar
Diving with Subgear XP-3H
20
4.1.3 Nitrox information (O2information)
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.
Subgear XP-3H includes this in the calculations and displays the necessary information:
O2% mix Fraction of oxygen: The fraction of oxygen in the Nitrox mixture can be set between
21% (normal compressed air) and 50% in 1% increments. Your selected mix will be
the basis for all calculations.
ppO2max Maximum allowed partial pressure of oxygen: the higher the fraction of oxygen in
the mixture, the shallower the dive depth at which this value of the partial pressure
of oxygen is reached. The depth at which ppO2max is reached is called Maximum
Operating Depth (MOD).
When you enter the settings for the gas mixture, Subgear XP-3H will display the
ppO2max limit setting and the corresponding MOD. Subgear XP-3H warns you audibly
and visually once the depth is reached at which the ppO2reaches the maximum
allowed value ->26.
• Default setting of ppO2max is 1.4bar.
The value of ppO2max can be set by means of Dive.Log or with "set 1" between
1.2 and 1.6bar (->69). It can also be changed at the time of setting the gas
mixture (->26).
• The CNS O2% value/alarm is not influenced by the selected ppO2max 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 O2value increases, if the partial pressure
of oxygen is below 0.5bar, the CNS O2value decreases. The closer the CNS O2value 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 O2%
decreases
CNS O2%
increases
21% 13m (43ft)
32% 6m (20ft)
36% 4m (13ft)
ppO2
0.21bar
0.5bar
WARNING
Nitrox diving may only be attempted by experienced divers after proper training from an
internationally recognized agency.
Preparation for the dive
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