Liquivision Xeo User manual

Dive Computer User Manual
Liquivision Products, Inc -1- Revision 3.2 Software 2.58
Dive computer, software version 2.58

Dive Computer User Manual
Liquivision Products, Inc -2- Revision 3.2 Software 2.58
CONTENTS
IMPORTANT NOTICES............................................................................................................................6
User Agreement and Warranty....................................................................................................................... 7
User Manual.................................................................................................................................................. 7
Liquivision Limitation of Liability................................................................................................................. 7
Trademark Notice.......................................................................................................................................... 7
Patent Notice................................................................................................................................................. 7
CE................................................................................................................................................................. 8
INTRODUCTION – XEO FEATURES........................................................................................................8
Hardware Features......................................................................................................................................... 8
Software Features.......................................................................................................................................... 8
GETTING STARTED – BEFORE DIVING................................................................................................9
Register Your Unit/Activate Your OC Software (Free).................................................................................. 9
Setup Gradient Factors, Time/Date & Battery Type ....................................................................................... 9
Read The Manual ........................................................................................................................................ 10
Familiarize Yourself With Tap-Navigation .................................................................................................. 10
GETTING STARTED – FEATURES OF YOUR XEO UNIT.................................................................11
GETTING STARTED – HOW TO TURN ON/TAP YOUR UNIT.........................................................12
GETTING STARTED..................................................................................................................................19
XEO Surface Display................................................................................................................................... 19
XEO Scroll Bar ........................................................................................................................................... 19
First, Check Your Battery!........................................................................................................................... 19
Optimizing Battery Life............................................................................................................................... 20
SURFACE MENUS...................................................................................................................................... 20
Main Menu .................................................................................................................................................... 20
1. Shut Off .............................................................................................................................................. 21
2. Enter PIN ............................................................................................................................................ 21
3. LOCK / UNLOCK .............................................................................................................................. 21
4. Dive Planning...................................................................................................................................... 22
4.1 Mode (Deco/Gauge) .......................................................................................................................... 22
4.2. Dive Setup........................................................................................................................................ 22
4.3. Gases................................................................................................................................................ 23
4.4. Runtime............................................................................................................................................ 24
4.5. Alarms.............................................................................................................................................. 26
4.5.1. Alarms On/Off ............................................................................................................................... 26
4.5.2. Depth............................................................................................................................................. 26
4.5.3. Time .............................................................................................................................................. 26
4.5.4. Ascent Rate.................................................................................................................................... 26
4.5.5. Descent Rate.................................................................................................................................. 27
4.6. Deco Settings.................................................................................................................................... 27
4.6.1. GFs L/H......................................................................................................................................... 27
4.6.2. PO2 dive........................................................................................................................................ 27
4.6.3. PO2 deco....................................................................................................................................... 27
4.6.4. Min PO2........................................................................................................................................ 27
4.6.5. Max END....................................................................................................................................... 27
4.6.6. Last deco stops .............................................................................................................................. 28
4.7. Your Saturation ................................................................................................................................ 28
4.8. Simulate Dive................................................................................................................................... 28
5. Dive Log............................................................................................................................................. 29
5.1. Log Summary................................................................................................................................... 29
5.2 Log Detail ......................................................................................................................................... 29

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5.3. Depth Graph..................................................................................................................................... 30
5.4. Temperature Graph........................................................................................................................... 30
6. Display Settings................................................................................................................................... 30
6.1. Brightness......................................................................................................................................... 30
6.2. Auto Dim ......................................................................................................................................... 30
6.3. Refresh............................................................................................................................................. 31
6.4. Layout.............................................................................................................................................. 31
6.5. Velocity............................................................................................................................................ 31
6.6. Stopwatch DF (this setting only applies to Gauge Mode)................................................................... 31
6.7 Dark Mode (this setting only applies to Gauge Mode)........................................................................ 32
6.8. Analog Clock.................................................................................................................................... 32
6.9. Show Hours...................................................................................................................................... 32
6.10. Colors............................................................................................................................................. 33
6.11. Simulate Dive................................................................................................................................. 33
7. Preferences.......................................................................................................................................... 34
7.1. Units................................................................................................................................................. 34
7.2. Log Period........................................................................................................................................ 34
7.3. Tap Sensitivity.................................................................................................................................. 34
7.4. Tap Count......................................................................................................................................... 34
7.5. Minimum Dive ................................................................................................................................. 34
7.6. Minimum Surface Interval................................................................................................................ 35
7.7. Status................................................................................................................................................ 35
7.8 Battery Type...................................................................................................................................... 35
7.9 Battery Meter..................................................................................................................................... 35
7.10 Battery Test..................................................................................................................................... 35
8. Salinity................................................................................................................................................ 36
9. Time/Date ........................................................................................................................................... 36
9.1 12h/24h............................................................................................................................................. 36
9.2 Time.................................................................................................................................................. 36
9.3 Date................................................................................................................................................... 36
9.4 Year .................................................................................................................................................. 36
9.5 Calibrate Time................................................................................................................................... 36
10. Connect to PC.................................................................................................................................... 37
UNDERWATER MENUS ........................................................................................................................... 38
1. EMERGENCY.................................................................................................................................... 38
1.1. Bailout / Undo Bailout...................................................................................................................... 38
1.2. GFs Off / Undo GFs Off ................................................................................................................... 38
1.3. Lost Gas........................................................................................................................................... 39
2. Silence Alarms .................................................................................................................................... 39
3. Change Setpoint .................................................................................................................................. 40
4. Change Gas......................................................................................................................................... 40
5. Stopwatch............................................................................................................................................ 41
6. Reset AVG.......................................................................................................................................... 41
7. Dark Mode On/Off (only available if Dark Mode is activated in the Surface Menus)............................ 42
8. Display................................................................................................................................................ 42
8.1. Brightness......................................................................................................................................... 42
8.2. Auto Dim ......................................................................................................................................... 42
8.3 Layout............................................................................................................................................... 42
9. Stop Simulation................................................................................................................................... 42
DIVING WITH YOUR XEO IN DECO MODE........................................................................................43
Dive Planning.............................................................................................................................................. 43
Settings That Will Affect Your Deco Plan.................................................................................................... 43

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Dive Setup settings.................................................................................................................................. 43
Settings related to OC Dives ........................................................................................................................ 43
Gas Manual Override Concept....................................................................................................................44
Settings related to CCR Dives......................................................................................................................44
Gas settings............................................................................................................................................. 45
Decompression planning ......................................................................................................................... 46
Gradient Factors...................................................................................................................................... 48
Oxygen loading....................................................................................................................................... 48
Entering the water........................................................................................................................................ 49
Turning Your XEO On............................................................................................................................ 49
Beginning Your Dive .............................................................................................................................. 49
Dive Display................................................................................................................................................ 49
Dive Time............................................................................................................................................... 49
Depth...................................................................................................................................................... 50
Maximum Depth ..................................................................................................................................... 50
Decompression Information Zone............................................................................................................ 50
Dive Setup .............................................................................................................................................. 51
Gas or Setpoint........................................................................................................................................ 51
Gas Alarms ............................................................................................................................................. 51
Temperature............................................................................................................................................ 52
Battery Indicator...................................................................................................................................... 53
“Battery Savings” mode............................................................................................................................... 53
Exiting the water.......................................................................................................................................... 53
Last dive information................................................................................................................................... 54
Altitude Compensation/Surface Pressure Adjustments ................................................................................. 54
DIVING WITH YOUR XEO IN GAUGE MODE ....................................................................................55
Entering the water........................................................................................................................................ 55
Dive Planning.......................................................................................................................................... 55
Turning Your XEO On............................................................................................................................ 55
Beginning Your Dive .............................................................................................................................. 55
Diving......................................................................................................................................................... 55
Dive Display........................................................................................................................................... 55
Dive Time............................................................................................................................................... 56
Depth...................................................................................................................................................... 57
Stopwatch ............................................................................................................................................... 57
Maximum Depth ..................................................................................................................................... 57
Average Depth........................................................................................................................................ 58
Time of day............................................................................................................................................. 58
Temperature............................................................................................................................................ 58
Battery Indicator...................................................................................................................................... 58
“Battery Savings” Mode .............................................................................................................................. 59
Exiting the water.......................................................................................................................................... 59
Last dive information................................................................................................................................... 59
Altitude Compensation/Surface Pressure Adjustments ................................................................................. 60
CARING FOR YOUR XEO ........................................................................................................................61
Protecting your XEO casing and screen from scratches................................................................................ 61
Post-Dive Care and Storage......................................................................................................................... 61
Long-Term XEO Storage............................................................................................................................. 61
Replacement Battery Storage....................................................................................................................... 61
Service information ..................................................................................................................................... 61
IMPORTANT INFORMATION ABOUT XEO BATTERIES.................................................................62
XEO Battery Type....................................................................................................................................... 62

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XEO O-rings.................................................................................................................................................. 65
How To Determine XEO Battery Life Remaining........................................................................................ 65
Basic Rules For Optimizing Battery Life...................................................................................................... 67
Detailed Rules For Optimizing Battery Life................................................................................................. 67
Battery Savings Mode: When Your Battery Voltage Drops Below A Critical Level...................................... 67
Tables Showing Estimated Battery Life Depending On User Settings........................................................... 68
CHANGING THE XEO’s BATTERY........................................................................................................70
OPTION– CHANGE O-RING..................................................................................................................... 73
XEO PC INTERFACE .................................................................................................................................75
PC Drivers: Internet Explorer....................................................................................................................... 75
PC Drivers: Firefox.......................................................................................................................................76
PC Drivers: Google Chrome ........................................................................................................................76
Advanced Users............................................................................................................................................. 77
PC Dive Logger: Internet Explorer.............................................................................................................. 77
PC Dive Logger: Firefox .............................................................................................................................. 77
PC Dive Logger: Google Chrome................................................................................................................77
Mac-OSX Dive Logger (all browsers)......................................................................................................... 78
How To Connect the XEO PC Interface To Your Computer......................................................................... 78
How To Launch A Dive Log Download....................................................................................................... 78
How To Install The Liquivision Firmware Updater Onto Your PC............................................................... 79
PC Firmware Updater: Internet Explorer ....................................................................................................80
PC Firmware Updater: Firefox.....................................................................................................................80
PC Firmware Updater: Google Chrome......................................................................................................80
Mac-OSX Firmware Updater (all Browsers) ..............................................................................................80
How To Install the Newest Firmware On Your XEO.................................................................................... 81
PC: Internet Explorer Firmware Install .......................................................................................................81
PC: Firefox Firmware Install........................................................................................................................82
PC: Google Chrome Firmware Install ......................................................................................................... 82
Mac-OSX Firmware Install (all Browsers) .................................................................................................82
All Users........................................................................................................................................................ 83
SUPPORT CONTACTS...............................................................................................................................84
BIBLIOGRAPHY......................................................................................................................................... 84

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IMPORTANT NOTICES
DANGER
Scuba diving is a dangerous sport, and can lead to injury, disability or death. Always dive within the
limits of your training, skills and experience. Technical diving activities, including decompression
diving, mixed gas diving, rebreather diving, wreck and/or cave diving all substantially increase the risks
of scuba diving.
The XEO dive computer is capable of calculating decompression requirements based on the Bühlmann
ZH-L16C algorithm first published in 19901. Decompression is an inexact science. It is possible to
follow a decompression plan exactly and still suffer decompression sickness. Following a
decompression plan does not, in any way, guarantee the avoidance of decompression sickness. The
same profile that gets you out of the water safely one day, may cause decompression sickness another
day, and lead to temporary or permanent injury or death.
You can die while diving.
WARNING – ELECTRONICS CAN FAIL – ALWAYS CARRY BACKUP
The KAON dive computer hardware will eventually fail, like any electronic equipment whose
components mature and age. If it fails during your dive, it can stop providing you with critical
information.
You must have a plan to handle a failure of the KAON dive computer. You should carry backup
instruments, including a depth gauge, digital bottom timer or dive watch, and have access to
decompression tables. Do not risk your life on only one source of information.
WARNING – CONDUCT PRE-DIVE CHECKS
It is your responsibility to perform all pre-dive checks recommended in this manual, including checking
for software updates and checking battery voltage to ensure the XEO dive computer has enough battery
life to complete your planned dive.
WARNING – ALWAYS CHECK FOR SOFTWARE UPDATES
The XEO dive computer software likely still has bugs. We have looked for them and tried to eliminate
them, but they can still appear during use. Bugs can cause the units to provide inaccurate or incomplete
information, or cause the unit to reset or turn off and stop providing any information at all.
You should always check for software updates
(www.liquivision.com/downloads/XeoSoftwareHistory.php)
and install all applicable updates, every time you prepare to use the XEO dive computer.

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User Agreement and Warranty
Use of your Liquivision XEO is subject to the User Agreement and Warranty (“Agreement”) available at the
Liquivision website: www.liquivision.com/xeo_manuals.php .
You must read the entire Agreement before using your XEO. If you do not agree with any term of the
Agreement, you must not use the XEO, and you may return the XEO to Liquivision or the authorized
Liquivision dealer from which you purchased the XEO for a full refund within 30 days after your date of
purchase.
If you use the XEO, you are deemed to have agreed to the User Agreement and Warranty.
User Manual
You must read this entire User Manual before using your XEO. Incorrect use of the XEO or its
accessories could invalidate your Warranty and can cause permanent damage to the XEO or its
accessories.
Liquivision Limitation of Liability
The Agreement includes exclusions and limitations of Liquivision’s liability to you. These exclusions and
limitations include, but are not limited to, the following:
YOU AGREE THAT YOU UNDERSTAND AND ACCEPT ALL RISKS ASSOCIATED WITH DIVING,AND THAT LIQUIVISION
IS NOT LIABLE TO YOU OR ANY OTHER PERSON,INCLUDING YOUR HEIRS,EXECUTORS OR PERSONAL
REPRESENTATIVES,FOR ANY LOSS,DAMAGE,COST,EXPENSE OR CLAIM ARISING OUT OF,CAUSED BY OR
RELATING TO YOUR PERSONAL INJURY OR DEATH WHILE DIVING,EVEN IF YOUR PERSONAL INJURY OR DEATH IS
CAUSED,IN WHOLE OR IN PART AND DIRECTLY OR INDIRECTLY,BY THE XEO OR YOUR USE OF THE XEO,AND
REGARDLESS OF WHETHER OR NOT THE XEO FUNCTIONED PROPERLY OR WAS DEFECTIVE IN ANY WAY.
YOU HEREBY IRREVOCABLY WAIVE AND RELEASE LIQUIVISION FROM ANY LIABILITY OR OBLIGATION TO YOU
OR YOUR HEIRS,EXECUTORS OR PERSONAL REPRESENTATIVES FOR ANY LOSS,DAMAGE,COST,EXPENSE OR
CLAIM ARISING OUT OF,CAUSED BY OR RELATING TO YOUR PERSONAL INJURY OR DEATH WHILE DIVING,EVEN IF
YOUR PERSONAL INJURY OR DEATH IS CAUSED,IN WHOLE OR IN PART AND DIRECTLY OR INDIRECTLY,BY THE
XEO OR YOUR USE OF THE XEO,AND REGARDLESS OF WHETHER OR NOT THE XEO FUNCTIONED PROPERLY OR
WAS DEFECTIVE IN ANY WAY.
You must read the Agreement for all limitations and exclusions of Liquivision’s liability to you.
Trademark Notice
Liquivision, the Liquivision logo, XEO, the XEO logo, and Dive Enlightened are all registered and unregistered
trademarks, trade names and service marks of Liquivision Products, Inc. All rights are reserved.
Patent Notice
U.S. and international patents have been applied for to protect the Liquivision Tap-Based Navigation
and the Liquivision Ceramic Pressure Sensor Technology. U.S. Patent 8359172, UK Patent
GB2455389, other patents pending.

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CE
The Liquivision XEO conforms to the requirements of EN 13319 (including EN 61000) and has thus
obtained CE certification.
INTRODUCTION – XEO FEATURES
Welcome, and thank you for choosing the Liquivision XEO dive computer!
The XEO is the most affordable color OLED dive computer designed for air, nitrox and trimix divers
of all levels. It brings you an exciting set of features focused specifically on your needs:
Hardware Features
•Color OLED (Organic Light Emitting Display) with:
- Display face angled towards the diver
- Large fonts
- User-customizable display colors
•Liquivision’s patent-pending intuitive tap-based user interface
•Liquivision’s patent-pending ceramic pressure sensor technology
•User-changeable lithium battery, both disposable and rechargeable options available
•Maximum depth -200m (656 ft)
•Accuracy exceeds the limits of EN13319:2000. Operational from sea level to 8,840m/29,000ft
•The XEO will function when its internal temperature is between - 0 to 40°C (32 to 104°F).
If the XEO’s internal temperature exceeds 40°C/104°F (in direct sunlight, for example) the OLED
display could show some visual disturbances. This is not a product failure – the display will return to
normal when the unit is cooled down.
Software Features
•Air, nitrox and trimix capability, allowing up to 10 gas mixes
•CCR feature allows accurate decompression for rebreather divers based on fixed PO2 setpoints
•Gauge Mode, including stopwatch and resettable average depth.
•Bühlmann ZH-L16C1, with optional Gradient Factors
•Visual alarms
•Built-in dive planner
•Built-in dive simulator
•Lifetime dive log memory (3500 hrs)
•Imperial/Metric settings
•Windows and Mac downloadable (PC interface hardware sold separately)

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GETTING STARTED – BEFORE DIVING
Register Your Unit/Activate Your OC Software (Free)
Your XEO comes pre-loaded with Open Circuit dive software (Bühlmann ZH-L16C algorithm1with
optional Gradient Factors). You will be able to interact with your unit on the surface and run dive
simulations immediately. However, the software will not run underwater until you register your unit,
obtain a free XEO Unlock PIN code, and enter this code into your XEO to activate the Open Circuit
part of the software.
To register your unit, you must visit: http://www.liquivision.com/activate.php.
During registration, you will be asked to enter your XEO serial number, your real name, address, phone
number and a valid email address. You will also be asked to agree and accept the User Agreement and
Warranty. Liquivision will then issue you a free XEO Unlock PIN code that you will be able to enter
into your XEO unit (detailed instructions are available here: E.g. Entering Your Free OC Software
Activation PIN, Setting Up GFs, Time/Date, Battery Type). At this time, your XEO will unlock its OC
diving features.
Liquivision requires you to register for two reasons:
a) To Mark the Start of Your Warranty Period:
b)
the date and time of your registration will be
considered the start of your limited warranty period
To Collect Contact Information For Critical Customer Communications:
the contact
information you provide will be used to contact customers in the event of a critical software
upgrade, hardware upgrade, or recall.
If you purchase a second-hand XEO unit, you must email Liquivision at [e-mail] and
provide the following information:
- XEO serial number
- Date purchased
- Who you purchased your unit from
- Your address, email and phone number
- The sentence “I agree and accept the XEO User Agreement and Warranty”
This is required to transfer the balance of the Warranty from the previous owner to yourself.
Setup Gradient Factors, Time/Date & Battery Type
Once you have registered and unlocked your XEO unit, the main screen will still say “NOT Ready To
Dive: Edit Your GFs, Time/Date & Battery Type”.
Liquivision asks you to review the Gradient Factor settings, as it has a critical impact on your
decompression profile. The default setting is 100/100 and is equivalent to classic Bühlmann ZH-L16C
algorithm1. You may change these values to add conservatism according to you personal preferences.
You will find step-by-step information on how to enter your desired Gradient Factor value here:
E.g. Entering Your Free OC Software Activation PIN, Setting Up GFs, Time/Date, Battery Type
You can find more information on Gradient Factors theory here: Gradient Factors.

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Liquivision asks you to enter the current Time/Date as they have an impact on the accuracy and
reliability of the XEO’s decompression calculations. If you do not set these values initially and change
them later on when using your XEO, it could introduce errors into the surface interval calculations.
Liquivision asks you to confirm your Battery Type to ensure you get accurate Battery Meter readings.
You will find step-by-step information on how to setup the Time/Date and Battery Type here:
E.g. Entering Your Free OC Software Activation PIN, Setting Up GFs, Time/Date, Battery Type
Read The Manual
Before your first dive with the XEO, read this manual and make sure you fully understand it. After any
period of not using your XEO, we recommend that you re-read the manual to make sure you fully
know and understand how to use it.
If you have any questions, refer first to this manual, then to the FAQ on the Liquivision website and
finally to your XEO dealer.
If none of this helps, contact Liquivision support at www.liquivision.com/contact.php .
Familiarize Yourself With Tap-Navigation
Liquivision’s tap-based navigation has what we call a “one beer learning curve”. Sit down on your sofa
for half an hour with a beer, and tap through the XEO menus to familiarize yourself with the tapping
interaction and the general menu layouts.

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GETTING STARTED – FEATURES OFYOUR XEO UNIT
HOW TO INSERT THE BUNGEE CORD
-
We recommend splitting the bungee in two and
using two separate pieces to secure your unit, so
if one breaks, the other holds.
- We recommend heat-
sealing the knots at the
end of the bungee cord (pull the knot away from
the XEO casing, heat it up lightly, and form the
hot plastic into a hard ball that can’t slip back
through the bungee hole).
Customizable Color OLED Display
Battery Compartment
Front Bungee Holes
Front Strap Holes
Back Strap Holes
Back Bungee Holes
Infra Red Aperture
(for connection to PC Interface)
Serial Number & CE Mark

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GETTING STARTED – HOW TO TURN ON/TAPYOUR UNIT
Please refer to the short video on tapping provided here: www.liquivision.com/videos.php
For your first XEO interactions, hold your XEO in one hand, and use the other hand to tap it. Once you
are familiar with the tapping technique, you will find it easy to tap your XEO when it is on your wrist.
General Tapping/Menu Guidelines:
1) tap “Down” three/five times* to turn the unit on, or to enter into menu mode
2) tap “Down” or “Up” to scroll through menu items
3) tap “Left” or “Right” to enter a menu item
*Everywhere in this manual, you will find references to tapping three/five (3/5) times to turn the unit
on, or to enter menu mode. The default setting is three times, but you can adjust it to five times if you
are concerned about accidental taps causing you to enter menu mode (Preferences -> Tap Count).
Before you can complete a menu action that can cause loss of information, you will be taken to another
screen asking you “Are you sure?”. The default answer is “No”. To confirm, you will need to scroll
down, and choose “Yes”.
Plane for “Up” and
“Down” Tapping:
Your Up and Down
taps should follow this
imaginary line
(parallel to screen)
DOWN TAP
Aim for the center of the unit.

Tap on the vertical surface (shown in green)

DO NOT tap on the angled surface (shown in red)
Plane for “Left”
and
“Right” Tapping:
Your Left and
Right taps should
follow this
imaginary line
(parallel to screen)
LEFT TAP
Aim for the center
of the unit
RIGHT TAP
Aim for the center
of the unit
UP TAP
Aim for the center &
center-left of the unit

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The last item in a menu is “Exit”. On the surface, “Exit” will take you to the previous menu.
Underwater, “Exit” will take you back to the dive screen.
There is also a menu timeout:
- if you stay in a surface menu for more than 60 sec., the XEO will timeout to the surface display.
- if you stay in an underwater menu for more than 10 sec., the XEO will timeout to the dive display.
E.g. Entering Your Free OC Software Activation PIN, Setting Up GFs, Time/Date, Battery Type
To turn your XEO on, tap Down three/five times in quick succession.
1. Your XEO will turn on and you will see this screen:
2. To enter menu mode, tap Down three times in quick succession.
3. Your XEO will enter menu mode, and you will see this screen:
4. Tap Down once to reach the “Enter PIN” menu.
5. Tap Left to enter the “Enter PIN” menu. You will see a line of nine
zeroes, and the first one will have a cursor on it.
6. Tap Up or Down to change the first zero to the first digit of your PIN
code. Tapping Up will bring the numbers 1-2-3-4-
5… in sequence.
Tapping Down will bring the numbers 9-8-7-6-5…. in sequence.

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7. Tap Left to move the cursor to the next zero, and once again tap Up
and Down to set the correct value.
8. Repeat this sequence until you have set all digits of the PIN.
9. Once you have entered all the digits of the PIN, tap Left once more.
If you enter the correct PIN, you will see the following screen:
If you made a mistake in the PIN, you will return to the “Unit Is Locked”
main screen, and you will need to repeats Steps 1-9 again.
If you did enter the correct PIN, you must now setup/confirm your Gradient Factors (Steps 10-14),
setup the Time/Date (Steps 15-16) and select your Battery Type (Steps 17-22) to fully activate your
unit.
10. To enter menu mode, tap Down three/five times in quick succession.
11. Your XEO will enter menu mode, and you will see this screen:
(You may notice that the “Enter PIN” line has disappeared, since you
have successfully entered your PIN)
12. Tap “Down” twice to reach the “Dive Planning” menu.

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13. Tap Left to enter the “Dive Planning” menu. You will see the
following list of optio
ns. Tap Down four times to reach the “Deco
Settings” submenu.
14. Tap Left to enter the Deco Settings submenu. The first line item will
be “GF L/H”, where you can setup your Gradient Factors.
For more information on Gradient Factors, please review the section:
Gradient Factors. They are in the format Low/High and both are in range
0-
100. The Low value (the factor at the deepest decompression stop) must
be less than or equal to the High value (the factor at the surface).
14a. Confirming 100/100 Setting: 100/100 signifies you are running
Bühlmann ZH-L16C algorithm1with no additional conservatism. If you
wish to confirm this setting, simply leave this menu as-is, without even
editing the Gradient Factors.
14b. Altering the Gradient Factors
: If you wish to alter your Gradient
Factors, tap Left once to move the cursor to the first number, and then tap
Down to set the first, or Low value.
14b. Altering the Gradient Factors: Once you have reached the Low value
you wish to achieve (30, in this case), tap Left once to move the cursor
over to the second, or High value. Tap Down again, until you reach your
desired High value (85, in this case).
14c. Exiting the Deco Settings Menu:
You will return to the Deco Settings menu item. Tap Down three times to
move the cursor to the word “Exit”. Tap Left/Right to exit this submenu.
Once you have either confirmed the
default setting, or chosen your desired custom setting, tap Left/Right
again to return to the word GFs. Tap Down six times to move the cursor
to the word “Exit”. Tap Left/Right to exit the submenu.
You will return to the Dive Planning menu item.

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15a. Once you are back in the main menu with the cursor on Dive
Planning…
15b. … tap Down five times to reach the Time/Date item.
16. Tap Left to enter the Time/Date menu. You will see the following list
of options. Set up your preferred time format (12h/24h), the time of day,
the date and the year.
Once you are satisfied with the Time/Date setup, tap Down to “Exit” and
tap Left to select it – you will be taken back to the main menu.
17. Once in the main menu, tap Up twice to reach “Preferences”, and tap
Left to select.
18. You will now be in the “Preferences” menu. Tap Down seven times
until you reach “Battery Type”, then tap Left to select.
19. You will see a list of battery types.
The default is “White -ER14335M” as this is battery type the first XEOs
shipped with (serial numbers 0 to 1250). If this is the battery you are
using, Tap Left to confirm this selection.

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If you have a more recent XEO, your unit shipped with a disposable
“Blue –
ER17335M” battery and you should Tap Down, then Tap Left to
select it.
If you are using rechargeable batteries:
-“Green – ICR16340” battery: Tap Down twice, then Tap Left to select.
-“LFP123A battery”: Tap Down three times, then Tap Left to select.
-“LiFeP04 battery”: Tap Down four times, then Tap Left to select.
Once you Tap Left to select, you will be automatically taken back to the
“Preferences” menu.
A quick word on battery types:
Your XEO is equipped with white battery holders designed for multiple battery types:
- High-capacity disposable ER17335M battery (blue wrap)
- Rechargeable LFP123A (K2) battery (white wrap with green text)
- (DISCONTINUED April 2013) rechargeable ICR16340 battery (green wrap)
- (DISCONTINUED April 2013) rechargeable LiFeP04 3.2V battery (silver wrapper with green text)
(Tenergy)
You can order a “Rechargeable Kit” for your XEO (2 rechargeable batteries, a charger and an AC
Adapter with international plugs). This is an environmentally-friendly solution that will save you from
throwing out many disposable batteries. However, we suggest always having Blue batteries on hand in
case you can’t access power to recharge the rechargeable ones.

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Your XEO is also compatible with the standard-capacity ER14335M battery (white wrap with blue
text), though this is not recommended as it has lower capacity and it is physically smaller, so it rattles a
bit when inserted into the XEO battery holder.
Note: For more information on battery types please refer to Important Information Ab
out XEO
Batteries.
20. Back in the Preferences menu, tap Down four times to reach “Exit”
and tap Left to select it.
21. Back in the Main menu, tap Down four times to reach “Exit” and tap
Left to select it.
22. You will now be back in the main Surface Display and you should see
“Ready to Dive”
“OC, Air”.

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GETTING STARTED
XEO Surface Display
When you turn your XEO on by tapping Down three/five times, it will go
to the “Ready To Dive” Surface Display (provided you have unlocked it,
set up the Gradient Factors, Time and Date as per the steps listed here).
This Surface Display shows your: dive setup (OC/CCR), gas setting
(Air), time of day (12:00AM) and the battery status.
If you have already dove your XEO, it will display information about last dive. For more about this,
refer to the “Exiting the water” section of the Manual.
If you do not access menus, or enter the water, it will go into sleep mode after 5 minutes. It will
continue to monitor pressure in sleep mode so it will wake up again once you jump in the water and
descend below 1.6m/5ft.
XEO Scroll Bar
Once you have entered the Surface Display, you can enter Menu Mode by
tapping your unit three/five times again.
If the list of menu items exceeds the space on the screen, a Scroll Bar
will appear on the right of the screen, indicating where you are in the list.
A Scroll Bar at the top of your screen means you are the top of the list, a
Scroll Bar at the bottom of your screen means you are at the bottom.
First, Check Your Battery!
The XEO displays battery status on its surface display so that you can check your battery power before
you dive. It is very important to make sure that you have enough battery power left to complete your
planned dive.
The battery status is represented graphically with a battery icon.
•The battery icon is solid green when the battery voltage is:
omore than 3.30V for disposable Lithium battery
omore than 3.50V for rechargeable Lithium-Ion battery
•The battery icon is solid yellow when there is:
oless than 3.30V for disposable Lithium battery
oless than 3.50V for rechargeable Lithium-Ion battery
•The battery icon is solid red when there is:
oless than 3.10V for disposable Lithium battery
oless than 3.40V for rechargeable Lithium-Ion battery

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WARNING
You must change your battery immediately when the indicator turns red
Lithium batteries sustain high power for a long time, but once the power starts to drop, it does so very
fast. A red battery indicator means that the battery power will drop to insufficient power within a few
minutes.
Optimizing Battery Life
The battery life is significantly affected by the brightness setting of your display and the display colors
you select. Learn more about optimizing your XEO’s battery in the section “Important Information
About XEO Batteries”.
SURFACE MENUS
Main Menu
1. Shut Off
2. Enter PIN (only if you haven't entered it yet)
3. LOCK / UNLOCK (only if the device have been unlocked)
4. Dive Planning
4.1. Mode (Deco/Gauge)
If you select Deco mode…
4.2. Dive Setup
4.3. Gases
4.4. Runtime
4.5. Alarms
4.5.1. Alarms On/Off
4.5.2. Depth
4.5.3. Time
4.5.4. Ascent Rate
4.5.5. Descent Rate
4.6. Deco Settings
4.6.1. GFs L/H
4.6.2. PO2 dive
4.6.3. PO2 deco
4.6.4. Min PO2
4.6.5. Max END
4.6.6. Last deco stops
4.7. Your Saturation
4.8. Simulate Dive
If you select Gauge mode…
…
…
… 4.5. Alarms
4.5.1. Alarms On/Off
4.5.2. Depth
4.5.3. Time
4.5.4. Ascent Rate
4.5.5. Descent Rate
…
…
…
…
…
…
…
…
4.8. Simulate Dive
5. Dive Log
5.1. Log Summary
5.2. Log Detail
5.3. Depth Graph
5.4. Temperature Graph