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Liquivision Xeo - Scuba Diving Adviser

1. 12 GECEING TARTE ED att 16 APO Suce Di plao eose e EEEa 16 ECOS DA aia 16 First Check yonr Baen esera saa NEE 16 Go m ne B aey E e E poo ipope 16 USAS Poo A E E R 17 A EEE AEE E E eee ee ee ee ee 18 2 ld PP O eo O E E E arene dead seston eee eed 18 he AA A 18 ANA A PM o A 18 Pr Ms MTV e PU O A 18 nn Po E T T 19 A a 20 A AS a 21 A INS TIO estes ticas 2d A a E E E E e E E AA 21 A O Po sereata O E O T A E eee 21 A nn o PO E E 22 SAA ERES E o A acta 22 Ad DECO SUMS a E E EA AAEE EE EO EAEE OE AEAN 22 E CS E OE Pen EN AE EN EAE E EET 22 AA E S 22 e ea E eee 22 A 23 O DA as 23 do O LON OCC OS OS EN lt Pr O 23 A A 23 SD nceeeceeseteesteescdeudeticessventeeeeseectecases 23 A e UE 24 SELO II cas 24 Liquivision Products Inc 2 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual A e E EEE A mace E E aaetesern 24 A 25 ere Empero T 2 P A ete ne eee ce E E E E E 25 SD PR aa E E E 25 25 AA O RU EE o o seseenenscesasedce 25 o A 26 A 26 A A PP 26 00 AMAS COOK eoliano ips ee ee ee eee 26 A A E lstenina tens E E S 26 nn A 27 o fi BD E ne ne me nee eee 2 DIC aos 28 A E E EE E A 28 A Fe TAO E E EE EA E A E ETE E A E A TA 28 TA A ASIN E E E E EEE E E EE ETER 28 TE ON sede pete E E E A N A E E E T A T 28 AI DVO E T et seadaheteeecehetenesenecncecenntcnanehets 28 Os Minimum WT ACS merlo iii tiles 28 Tda AUIS OEA e o e e Pr o E PE E 29 AA o 0 II serps esas E ose sacoostextes 29 e E vaca deeeroias
2. Battery Indicator The battery status is represented graphically with a battery icon e The battery icon is solid green when the battery voltage is more than 3 30V e The battery icon is solid yellow when there is less than 3 30V left of battery power about 2h of diving e The battery icon is solid red when there is less than 3 15V left of battery power d Learn more about your XEO s battery in the section Important Information About XEO s Battery Battery Savings mode In the event that your battery is very low during the dive your XEO will go into Battery Savings mode It is a mode that tries to preserve the battery as much as possible so that the XEO keeps functioning as long as possible This mode changes the following things e all the information on the display will turn green the color that 1s most power economical e the display brightness will be set to low For more details please refer to Battery Savings Mode When Your Battery Voltage Drops Below_A Critical Level Exiting the water Once you are shallower than 0 6 meters 2 feet your XEO will go back into surface mode and offer you access to surface menus Liquivision Products Inc 43 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual However for next few minutes it will remain in post dive mode You can control length of this period in menu setting Minimum Surface Interval This means that if you resume your dive within that
3. Inc 38 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Decreasing the Low value from 100 to 30 for example adds conservatism in the deep part of the decompression 1 e it might introduce additional deep stops and lengthen the deepest stops duration Decreasing the High value from 100 to 85 for example adds conservatism in the shallow part of the dive i e it might substantially lengthen shallow decompression stops For more details on Gradient Factors please refer to the publications in our Bibliography Oxygen loading Apart from inert gas loading your XEO also calculates your CNS Central Nervous System and OTU Oxygen Toxicity Unit loading Your current CNS OTU levels are easy to access through the Your Saturation menu item Both your CNS and OTU loading increases during your dive when the partial pressure of oxygen is above 0 5 bar On the surface your CNS loading decreases in a similar way to the inert gas loading it has a 90 minute half time Your OTU loading however does not drop on the surface Theoretically you can accumulate certain amount of OTU over a period of up to 30 days and your XEO uses the US Navy REPEX method to figure out how much more OTU can you accumulate on a given day You can view your CNS information and OTU remaining in two ways Access the Your Saturation menu item This will show you how much more OTU you have left for this day Plan your next dive using the Runtime functi
4. Your XEO can generally distinguish between a sudden change in pressure caused by water entry vs other types of sudden changes in pressure such as a plane taking off or driving up a mountain This method of surface pressure detection has proven quite reliable but it is always possible to trick your XEO for example e if you place your XEO in shallow and very stable body of water such as a bucket full of dive gear being rinsed your XEO may assume that current surface pressure is more than it is in reality If you go diving immediately after this your depth reading may be distorted e if you increase ambient pressure very quickly after the XEO has adjusted for being at altitude e g if you were to skydive with a XEO it might go into a phantom dive as it will assume that you have entered the water In this highly unlikely case the only solution is to reset your XEO by removing the battery please refer to the Changing The XEO s Battery section for details You can always check what XEO assumes as the current surface pressure by going to the Status screen please refer to Status section for details Liquivision Products Inc 44 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual CARING FOR YOUR XEO The XEO is designed to be a robust device However it is still possible to damage it or to shorten its life by improper use Please follow these steps to care properly for your unit Post Dive Care and Storage Yo
5. Dive Gas If you remove a Default Gas or change 1ts mode from Dive Gas to Deco Backup or Off the Default setting will be passed to the first Dive Gas on the list of gases If there is no such gas configured 1t will be passed to first gas on the list and 1ts mode will be changed to Dive Gas If you are in CCR mode the Default Gas will be your diluent and 1t will be impossible to switch diluent while diving Liquivision Products Inc 36 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Dive Gas Dive Gases will be available for switches during the dive and will be used in ascent schedule calculation Their maximum PO2 is determined by the PO2 dive menu item Deco Gas Deco Gases will be available for switches during the dive and will be used in ascent schedule calculation Their maximum PO2 is determined by PO2 deco menu item Backup Gas Backup Gases will be available for switches during the dive after choosing option Show All in the Change Gas underwater menu A Backup Gas will be used in ascent schedule calculation only after you switch into it and only until your ascent schedule reaches a depth where it can switch to another Dive or Deco gas You can alter this by marking some of Dive or Deco Gases as Lost see below A typical example of Backup Gases would be to configure the Gases your dive buddy is taking but that you don t have That way you can quickly s
6. Menu text e Menu parameters Scroll down to the value you wish to change by tapping Down Tap Left to move the cursor over to the color indicator for that value You can then scroll through all available colors by tapping Up or Down Once you reach a color that you like you can tap Right to return to the list of values Once you have completed all the changes you wish to make scroll all the way down until you reach Exit 6 9 Simulate Dive The final item in the Display menu is Simulate Dive This is so you can test all your display settings without getting yourself or your XEO wet When you enter Simulation it will open sub menu asking you for depth and time of the dive its speed whether it s normal 1x or faster 2x 4x etc up to 16x faster than normal and then you can select Start A couple of things to note about the XEO simulator e The simulator follows descent and ascent rate limits e It takes a moment to turn on since the simulation starts at Om Oft but the XEO considers a dive after divers descends below 1 6m 5 25ft e If the time you set is too short to reach the specified depth the simulator will just keep descending for the allotted time and then start ascending without reaching the depth you specified e Please note that the Auto Dim option is not available during a simulation You can stop the simulation at any time by tapping the unit 3 5 times to enter the underwater
7. Switch is On and you are in OC mode your XEO will automatically switch your gas to the Best Gas of all your Dive and Deco gases e When Auto Switch is On and you are in CCR mode your XEO will automatically switch your setpoint from Low to High and vice versa For details please refer to the Dive Setup settings subsection of the Dive Planning section of the manual If you choose to run your XEO in CCR mode you can configure your Low and High setpoints e Low will be between 0 3 1 0 e High will be between 0 5 2 0 Setpoints progress in 0 1 increments The Low setting has to be lower than the High one Two more options relating to your Setpoints are On Descent and On Ascent These options allow you to configure the depth at which your XEO will automatically switch from Low to High Setpoint and from High to Low Setpoint respectively assuming that you have turned Auto Switch to On Your XEO will also assume when computing the ascent schedule that below the On Descent depth you have your Setpoint set to High and above the On Ascent depth to Low Again for details please refer to the Dive Setup settings subsection of the Dive Planning section of the manual 4 2 Gases Here you can configure up to 10 different gases for use in your dives Add If you select the Add option you will see the following screen in which you can set the specifications of your gas e 02 oxyge
8. a username for yourself and you re ready to go PC Dive Logger Google Chrome e Click here to download the Liquivision Dive Logger installation package http liquivision com downloads LV DiveLogSetup exe When the download is finished a tab will appear in the far lower left corner of Chrome Left click on the LVDiveLogSetup exe tab that appears in the far lower left corner of Chrome You will be prompted to run the program click Run Follow the wizard and the Liquivision Dive Logger software will be installed The wizard will install a shortcut to the Liquivision Dive Logger on your desktop To launch the logger double click on the shortcut Create a username for yourself and you re ready to go Mac OSX Dive Logger The Mac OSX version of the Liquivision Dive Logger program will be available once we release the XEO currently expected end July 2011 How To Connect the XEO PC Interface To Your Computer e Connect the USB cable provided to your PC and to the PC Interface e At this point you should get a message New Hardware Detected e Place the XEO unit on its side with the PC interface aiming for the eight holes on the backplate e The distance from the PC interface to the XEO should be 2 4 cm or 1 2 inches Liquivision Products Inc 57 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual How To Launch A Dive Log Download You can download your dive logs onto your PC either by using the Liquivisio
9. alone value see Picture 3 STOP shows the length of the deepest decompression stop on your XEO s ascent schedule when you are currently at this stop that 1s within 0 5m 1 6ft from it It is displayed in minutes and seconds rounded up to 10 seconds Now these numbers are displayed in various configurations depending on your depth and XEO ascent schedule e If your XEO s ascent schedule contains no decompression stops TTS and NDL are displayed Picture 1 above e If your XEO s ascent schedule contains decompression stops but you are not at the deepest one at the moment TTS and STOP FOR are displayed Picture 2 above Depth e If your XEO s ascent schedule contains decompression stops and you are at the deepest one at the moment TTS and STOP are displayed Picture 3 above Dive Setup Based on your Dive Setup settings the moment you begin your dive your XEO will enter either OC or CCR dive mode This will be displayed in the lower left corner with either OC or CCR Furthermore if during CCR dive you bailout and indicate that by using Bailout menu option this label will change to BAIL Liquivision Products Inc 41 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Gas or Setpoint When you are diving OC or CCR in Bailout Mode below the type of dive OC BAIL you will have your current gas displayed It will be O2 for oxygen NxXX for nitrox e g Nx50 for nitrox w
10. at depth you do not need to adjust it manually Instead you can set your Auto Dim setting to the depth at which you want your display brightness to be reduced to Low By using the Auto Dim feature here is what will happen e At the surface display brightness will be at the setting chosen in the Brightness menu e Once you reach your Auto Dim depth and below the brightness will switch to Low e Between these two the brightness will decrease linearly with depth e g at half of the Auto Dim depth it will be halfway between the surface brightness setting and Low Liquivision Products Inc 25 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual If you set your Brightness setting to Low the Auto Dim feature will have no effect The default Auto Dim setting 1s Off You can adjust 1t in 10m 30ft increments 6 3 Refresh You can either set refresh rate to Fast or Normal The default setting is Normal In most cases you will not notice the refresh rate when set to Normal but if you do you can set it to Fast Using the Fast setting will shorten the battery life 6 4 Layout Your XEO comes with a single underwater display layout We welcome user feedback regarding this layout and we remain open to the possibility of creating additional layouts in future software updates 6 5 Velocity This setting changes whether or not ascent descent rates will be displayed
11. freshwater lake or river e brackish 1 012 kg 1 such as some estuaries inland seas etc e saline 1 025 kg 1 such as open sea By selecting the correct salinity you ensure that your displayed depth will be accurate XEO like any other depth gauge or computer in order to measure depth measures pressure Depending on water salinity there will be a slight variation in pressure at the same depth If you are unsure of the water salinity choose the salinity that your dive decompression tables were calibrated to 9 Time Date In this submenu you can set all the options connected with time and date 9 1 12h 24h Choose the one you prefer the AM PM type time format or the 24 hour format Liquivision Products Inc 29 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 9 2 Time Time of day displayed as hours and minutes 9 3 Date Day of month and month 9 4 Year A current year The year should be within period of 2010 to 2025 10 Connect to PC Tap into this menu item before starting the download of your dive logs in your PC application of choice Refer to 1ts manual for more information If you tap into this item accidentally don t worry the wait for PC communication will time out after 30 seconds and you will be back to main menu For more information on connecting to your PC downloading your dives or uploading new software onto your XEO please refer to the XEO PC Interface section of the
12. menus and choosing Stop Simulation to learn more refer to the Stop Simulation section of the manual Liquivision Products Inc 27 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 7 Preferences In this menu you are able to adjust and fine tune settings of your device You are probably going to use this menu only once before you start diving with your XEO 7 1 Units Here you can choose the units in which data will be displayed on your XEO Metric units meters meters per minute Celsius Imperial units feet feet per minute Fahrenheit 7 2 Log Period The Log Period is the frequency with which dive data will be saved to memory Your XEO collects depth and temperature data for each dive If you chose a Log Period of 2 seconds then your XEO will store depth and temperature data to memory every 2 seconds The number of dives recorded by the XEO s Dive Log depends on the Log Period you select If you set the Log Period to 1 second 1s there is space for more than 60 hours of dive profiles This will increase substantially 1f you increase the Log Period For example with the Log Period set to 60 seconds 60s your XEO would be capable of remembering 3600 hours of dive time 7 3 Tap Sensitivity You can set Tap Sensitivity to Low or High This allows you to adjust how softly or firmly you must tap your XEO for it to react High sensitivity means it will be very sensitive and react to light taps Low
13. minutes Liquivision Products Inc 28 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 7 7 Status If you tap into this menu setting you will see basic information concerning your device such as type hardware version software version etc 7 8 Enter CCR PIN To access the XEO s closed circuit rebreather CCR functionality you must purchase a XEO CCR Unlock Scratch Card and follow these steps 5 Scratch off the silver security strip to obtain your alphanumeric Scratch Off PIN code 6 Log into the XEO owner profile you created during registration by visiting www liquivision com update_owner php and entering the required information email password and XEO serial number 7 Scroll down to the CCR Unlock section and enter the alphanumeric Scratch Off PIN code in the field provided 8 Obtain your purely numeric CCR Unlock PIN and enter it into your XEO unit through the menu item Enter CCR PIN This will unlock your XEO s paid CCR functionality Enter the Preferences menu then scroll down to the Enter CCR PIN menu item Tap Left Right to enter the PIN screen then tap Up or Down to set the first digit of the PIN Tap Left to move the cursor to the second digit of the PIN and once again tap Up or Down to set it Once you have set all the digits tap Left Right again 8 Salinity You can adjust salinity settings here There are three available modes e fresh 1 kg l such as
14. time has been reached Liquivision Products Inc 21 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 4 4 4 Ascent Rate Here you can create a set of ascent rate rules You can set up to 5 different rules The first rule 1s the one with Start on the left This will apply at all depths of your dive unless you set additional rules This will also be the default rule for any depths not covered by other rules If for example you set 1t to 10 meters per minute 33 feet per minute and set no other rule then at any depth exceeding this ascent rate will cause an alarm Alternatively you can add more rules in the format Start Depth Maximum Rate These additional rules will apply once you get shallower than specified depth For example you might choose to limit yourself to 1 meter per minute 3 feet per minute once you re past your last deco stop which is planned at a depth of 3 meters 10 feet In this case you would set a rule Start Depth 3 metres and Maximum Rate 1 meter per minute 4 4 5 Descent Rate This menu works in the same manner as the previous menu the Ascent Rate menu In this case though a rule is in effect once you re deeper than your specified start depth and first rule will apply from surface downward until you reach you next rule s start depth 4 5 Deco Settings In this submenu there is a set of parameters that affect how your XEO calculates your ascent sched
15. to your desktop or laptop for more information on this please read the XEO PC Interface section of the manual Your XEO is capable of remembering hundreds of dives Older dives though will not have their depth and temperature profiles available The number of dives recorded by the Dive Log depends on the Log Period you select If you set the Log Period to 1 second 1s there is space for more than 60 hours of dive profiles This will increase substantially 1f you increase the Log Period For example with the Log Period set to 60 seconds 60s your XEO would be capable to remember 3600 hours of dives To learn how to change the Log Period refer to the Log Period section of the manual 3 1 Log Summary In the Log Summary you will see two things e amenu item called Page e alist of your most recent dives The Page menu item allows you to scroll through your dives page by page At first it will be showing 1 and the list of dives below it will be your most recent dives If you set Page to 2 it will bring up the dives that occurred immediately before that As you increase the Page number you will see a list of older and older dives The list of dives will display a short summary of each dive that is the date and time of the dive Scroll down to highlight a particular dive and you will also see its maximum depth and duration at the bottom of the screen If you select a particular dive you will enter its Log D
16. will be changed to green and the brightness will be changed to low The refresh rate will not be changed Battery Savings Mode is an emergency mode designed to raise the voltage of the battery to an acceptable level The unit will remain with green colors and low brightness until the dive ends When the next dive starts your custom colors and brightness will be used Again if the voltage drops below a critical level Battery Savings Mode will be entered to raise the battery voltage If you find that your unit is repeatedly entering into Battery Savings Mode all green text then you are using too aggressive colors or brightness settings Entry into Battery Savings Mode is more likely if the battery is nearing the end of its life or if the water is very cold However entry into Battery Savings Mode does not necessarily mean the battery is nearing the end of its life In some cases you could still have 10 20 more hours of dive time remaining even if you notice a transition into Battery Savings Mode Liquivision Products Inc 48 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Tables Showing Estimated Battery Life Depending On User Settings The following tables shows the approximate number of dive hours achieved with different settings assuming the diving 1s done within one month of changing the battery in warm water Table 1 Default yellow green colors Standard Display Layout diving over month A High Brightness Medium
17. Brightness Low Brightness Slow refresh 11 7h 23 2h 38 1h Fast refresh 10 3h 19 0h 31 2h Table 2 Custom Colors Standard Display Layout diving over 1 month N High Brightness Medium Brightness Low Brightness All green slow refresh 12 9h 23 4h 41 4h All light blue fast refresh 6 3h 12 2h 23 5h As you can see the dive hours on a battery vary from about 6 hours to 41 hours based on the settings The longest battery life 1s obtained by using all green colors and slow refresh rate This gives about 41 hours of diving over month The standby battery life of the XEO is about 5 months If you are not going to use the XEO for 1 month or more you should remove the battery during storage Liquivision Products Inc 49 Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual CHANGING THE XEO s BATTERY Here is a description of the battery change and O ring change procedure You can also refer to the short video on correct battery changes provided here www liquivision com videos php 1 Make sure your work area is dry and clean 2 Prepare all your materials For keeping XEO amp O ring clean Lint free cloth e g cloth for cleaning your eye sunglasses Glove For battery change Spare battery Coin to unscrew battery cap For O ring change Spare O ring O ring lubricant 3 Clean your XEO unit Wash of any salt or other residue Dry the unit Wipe off any dust or lint with a lint free
18. 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 and setup the Time and Date Steps 15 18 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 Liquivision Products Inc 13 Revision 0 17 LIQUIVISION XEO Dive Computer 13 Tap Left to enter the Dive Planning menu You will see the following list of options 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 Biihlmann ZH L16C algorithm with no additional conservatism If you wish to confirm this setting simply leave this menu as is without even editing the Gradient Factors 14b Alt
19. It will show the rate as a number of meters or feet per minute and an arrow showing whether you are ascending or descending Velocity off or not ascending descending Velocity on ascending at 12 mpm current units metric 6 6 Analog Clock This setting affects how the seconds portion of your dive time 1s displayed By selecting Off you will have the seconds value printed as a number on your display By selecting On you will see a graphical indication of the seconds elapsed a bar display filling up over time to a full minute Analog Clock OFF Analog Clock ON 6 7 Show Hours This setting affects how your total dive time will be displayed By selecting Off you will have the dive time shown as minutes seconds with the minutes value exceeding 60 once more than an hour has Liquivision Products Inc 26 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual elapsed By selecting On you will have the dive time show as hours minutes seconds with the minutes value only reaching 59 before being converted into 1 hour and O minutes Show Hours OFF Show Hours ON 6 8 Colors Choosing this option will take you to entire sub menu where you can choose colors for different parts of your display You can set the colors of the following values e Depth Total dive time Maximum depth Maximum depth label MAX printed on the screen Unit label Gas Setpoint Time of day Temperature Depth units
20. LIQUIVISION XEO Dive Computer User Manual J 7 Fy E 1 4 i E e K i i p i y Y _ 1 am Dive computer version 1 06 Liquivision Products Inc Revision 0 17 LIQUIVISION XEO Dive Computer User Manual CONTENTS IMPORTANT NOTES srt cios 5 User Arreement and Warrahty srine a a E aa ic cian 6 Uoer N AAA NDA E nansnacsasesnersoneasansseonees 6 Liguivision Limitation of IDO REEERE ead ere RR 6 Tado mark NoU E cee rein E E E A 6 AA E A E A ee eee 6 A go A 7 INTRODUCTION XEO FEATURE S penera AE NE AEE E NE e E AE 7 Hardware le A A e ono UI E 7 SOMA ti eos 7 GE FTING STARTED BEFORE DIVER anarai 8 Register Your Unit Activate Your OC Software FTe8 ccccccccoooooooooonoccccncnononononononononononononnnnnnnnnnnnnnnnnnnnnnnonnnanos 8 Somo raene F actors lime Dee oi pepe 8 Unlock CCR funcHhonality Paid Wp oad serna iia 9 eat Ens Mantak ocio ii iii 9 Familiarize Yourself With Tap Navigation ooococccccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nono nn n nn nn nn nn non nn nn nn nn nnnnnnnnnnss 9 GETTING STARTED FEATURES OF YOUR XEO UNIT oooncnnncccnnnnnccnnnnnoconnncnoconnnnnnccnnnnnnccnnnnanoss 10 GETTING STARTED HOW TO TURN ON TAP YOUR UNIT oooooooccnnnnnnccnnnnnnccnnnnnnccnnnnnacononnnnoo 11 General Tapping Menu Guidelines estoi ii dt 11 E g Entering Your Free OC Software Activation PIN Setting Up Gradient Factors Time amp Date
21. MATION ABOUT XEO s BATTERY XEO Battery Type The Liquivision XEO uses one ER14335M lithium 3 6V battery Only ER14335M batteries are authorized for use with your XEO ER14335 batteries no M are NOT compatible Only the batteries contained in Liquivision battery packs can be guaranteed to perform to Liquivision standards We strongly recommend always having a spare battery on hand since spare batteries have a long shelf life and do not require any special storage environment just dry and away from direct sunlight or heat Liquivision Products Inc 45 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Spare batteries are sold as follows Battery 1 Pack Battery 3 Pack 1 ER14335M battery 3 ER14335M battery spare O ring 3 spare O rings resealable tube of O ring lubricant XEO O rings You should inspect your battery cap O ring with every battery change Check for cracking damage or dirt If you choose to replace your O ring always make sure to clean the battery cap properly to remove any residue that may prevent a good seal and to lubricate the new O ring with silicone O ring lubricant Only O rings contained in Liquivision battery packs can be guaranteed to perform to Liquivision standards To order spare batteries and O rings for your XEO please contact your local Liquivision dealer How To Determine XEO Battery Life Remaining The ER14335M XEO batteries can provide up to 41 hours of dive time with your u
22. Manual Voltage Oo ne 3 4 32 3 0 28 Lithium sulphur dioxide Lithium manganese dioxide Sealed lead acid Silver oxide Nickel cadmium Alkaline manganese dioxide Zinc carbon Mercuric oxide a J Zinc air 0 10 20 30 40 50 60 70 80 90 100 Capacity discharged This means three things Itis hard to estimate level of charge The battery shows a steady 3 6V for most of its life there is no slow battery voltage decrease that can inform your XEO about the amount of power that has been used and the amount of power left It is hard to estimate the amount of time left Even if your XEO knew exactly how much battery power is left it is still hard for your unit to judge how much dive time is left Dive time will be greatly affected by user settings such as screen brightness and colors Once the battery voltage starts to drop it drops fast Your XEO will stop functionning entirely once the voltage drops below 2 90V For this reason it is important to pay attention to the Yellow battery indication it means there is really very little time left Basic Rules For Optimizing Battery Life You can extend optimize your battery life in several ways Always choose the lowest screen brightness setting you need for your dive The XEO has an Auto Dim feature where the unit uses your chosen brightness setting on the surface and slowly reduces brightness to Low as you descend to a selected depth K
23. NAL 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 and the XEO logo 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 Liquivision Products Inc 6 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 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 e Color OLED Organic Light Emitting Display with Display face angled towards the diver Large fonts User customizable display colors e Liquivision s patent pending intuitive tap based us
24. Right taps should eV gt follow this y imaginary line parallel to screen UP TAP Aim for the center amp center left of the 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 gt 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 Liquivision Products Inc 11 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 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
25. action and the general menu layouts Liquivision Products Inc 9 Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual GETTING STARTED FEATURES OF YOUR XEO UNIT Customizable Color OLED Display a Battery Compartment f y p fi l QUI VISION Xeo fi g A Front Strap Holes Front Bungee Holes Back Strap Holes Back Bungee Holes Infra Red Aperture for connection to PC Interface Serial Number amp CE Mark 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 Liquivision Products Inc 10 Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual GETTING STARTED HOW TO TURN ON TAP YOUR UNIT DOWN TAP Aim for the center of the unit v Tap on the vertical surface shown in green x DO NOT tap on the angled surface shown in red Plane for Up and Down Tapping Your Up and Down taps should follow this imaginary line parallel to screen LEFT TAP Aim for the center of the unit gt ri RIGHT TAP Plane for Left Qu VTISI on xX eo fi Aim for the center and lt lt Y Y gt of the unit Right Tapping Y our Left and
26. aid Upgrade To access the XEO s closed circuit rebreather CCR functionality you must purchase a XEO CCR Unlock Scratch Card and follow these steps 1 Scratch off the silver security strip to obtain your alphanumeric Scratch Off PIN code 2 Log into the XEO owner profile you created during registration by visiting www liquivision com update_owner php and entering the required information email password and XEO serial number 3 Scroll down to the CCR Unlock section and enter the alphanumeric Scratch Off PIN code in the field provided 4 Obtain your purely numeric CCR Unlock PIN and enter it into your XEO unit through the menu item 7 8 Enter CCR PIN This will unlock the paid CCR functionality of your XEO 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 inter
27. 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 PERSO
28. as and oxygen saturation Also while you are diving these calculations compute your ascent schedule based on the theoretical Biihlmann model Your ascent schedule information is displayed on your dive screen as Time To Surface No Decompression Limit Deepest Stop etc more details on this in Dive Display section e Simulated decompression planning these calculations only occur when you run Simulate Dive on your XEO The Dive Simulator starts with your actual inert gas and oxygen saturation but after that it tracks your simulated inert gas and oxygen saturation Also it follows the pressure implied by the dive simulation and not the actual ambient pressure around you After the simulated dive is finished the simulated saturation is wiped out If you start a new simulation it will start again from your actual saturation Also the simulated dive will not of course affect your actual saturation See also 4 7 Simulate Dive in the Dive Planning submenu and 6 9 Simulate Dive in the Display Settings submenu for more information on the Dive Simulator Liquivision Products Inc 37 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual e Dive planning these calculations start with your current actual inert gas and oxygen saturation If you are not yet fully desaturated from previous dives then you can tell the Dive Planner to wait certain amount of time on the surface equivalent to whatever time 1s left of your surface inter
29. as is breathable Auto Switch will switch you to that gas If you decide NOT to switch to your first Deco Gas at the XEO calculated switch depth and your Auto Switch is on you will have to wait until XEO switches automatically to the Deco Gas before you can switch back manually to your Dive Gas thus activating Manual Override Once you are ready to switch to your Deco Gas you will have to do so manually As soon as you do so Manual Override will turn off again since you will have selected gas that is considered the Best Gas at that moment Settings related to CCR Dives When diving CCR there is a larger set of settings to configure First you must set values for your Low and High setpoints You can set them to any value between 0 3 1 0 and 0 5 2 0 respectively in 0 1 increments The Low setpoint must be less than the High setpoint You can use these pre configured Low and High setpoints to quickly change setpoints underwater this way you don t have to create a new setpoint while underwater These pre configured setpoints will be used to calculate your ascent schedules There are two more values related to these setpoints that you will need to configure On Descent and On Ascent On Descent allows you to configure at what depth you want to switch from the Low setpoint to the High setpoint during your descent On Ascent allows you to configure at what depth you want to switch from the High s
30. asagarsiedeclosduasesasnioyesoisiueaaces 29 AL A IL 1 sss searederaisraawacosaaensesescnatsnnnedananareauacasyasese se cneisnnpedenaierwausaussasesestaaeet o A 29 ON MN y A PM ce pat nn oo E EE PU 29 DZ MAMMA APO nn o PO E 30 A o O NN 30 a E PR IAEA OTE A ss vevonsestetanatessseieees tenses TA AAE A 30 ns CAMA e o E E E E cc cecubesewesta EE 30 UNDERWATER MENO rnmaseans rada 30 MACAO AAA ening Sssesiecsueuctec aosuepacasstuladsostauseseses tos setnesacsaslosdecsssusgecceatedie doteeladansuaveccsssene 30 e ea AA e eeee eee e eeeeere eee 30 MS OR COG O E EEEE asenecissaeeceeseteccseniweneseaceaeteesaeeceesicuccces 31 Mey OS dS arcsec ecg re A 31 ZEN ita 31 y CUASI toi 32 ar TAG AA o o o en 32 A NP PPP TL 33 A A A 33 Ol DECO e aaa pacia 33 cease optic o On cece 33 a OPO sy O econo ntco ecc celaceenecereaeseoasceenensecess cide 33 PIVING yh YO ADO saetas 34 DA A e A eE OU O IA 34 Settings That Will Affect Your Deco Pla asian ricribs 34 DISENO O est 34 Se uo pon E ET AEEA E EEA EAA T 36 Decompression pan er acco ncccateebeaseecnacenieceoesacacseacoetesbacoeneancesteceoceacacneceneees basoeneascesseeaneaaets 37 A e e PO NANEN A OS 38 ONE OA IO en ee eee ee ee eee eee 39 Laterne e VE cetera crs ear cheers E a 39 DNS DISPO aa 40 Liquivision Products Inc 3 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Bate Davies Modo rasos oia ia tooo o 43 DEI asec es cet testers E E E 43 Lastarve mOra idilio 44 Altitude Compe
31. aution 3 Refresh rate The refresh rate changes how fast information is updated on the screen It has two settings Normal and Fast If you can use Normal and you don t notice anything that is the best choice If you use Normal and you find that you can see the screen flickering when you move the unit then select Fast Also if you plan on taking any pictures or video of the XEO select Fast The Fast refresh rate burns about 20 more battery power than Normal So battery life on Fast is reduced by about 20 4 Display mode The display mode standard alternate simple has a small effect on battery life Simple burns the least power Alternate burns 10 15 more than simple Standard burns 10 more than alternate 5 Water temperature Diving in cold water water temperature below 12 C 54 F shortens the life of your battery We strongly recommend using conservative colors and brightness settings when diving in cold water to maximize your battery life Battery Savings Mode When Your Battery Voltage Drops Below A Critical Level The XEO circuit requires a minimum voltage in order to measure the depth properly In certain cases of aggressive brightness aggressive colors or extremely cold water the voltage of the battery may drop below a critical voltage Below that critical voltage it is no longer possible to measure depth accurately If that happens the XEO will automatically switch into Battery Savings Mode all colors
32. below When your XEO is computing your ascent schedule it is assuming you will be changing your gas or setpoint on the way up irrespective of the Auto Switch option e When diving OC your gas will be updated always to the Best Gas for a specific depth of your ascent schedule If there is not a single gas breathable at that depth a hypothetical situation which definitely is to be avoided it is not changed The Best Gas is chosen among all Dive and Deco Gases you have set up that have not been flagged as Lost e When diving CCR it does not change your setpoint until o Your depth at this point of your ascent schedule is below On Descent option then the setpoint will be changed to High o Your depth at this point of your ascent schedule is above On Ascent option then the setpoint is changed to Low Gradient Factors Gradient Factors are a method used to increase the conservatism of the bare BuhImann ZH L16C algorithm Gradient Factors range from 100 100 bare B hlmann ZH L16C algorithm no added conservatism to 0 0 most added conservatism In fact the 0 0 setting refers to decompression based only on the oxygen window effect no tissue compartment supersaturation As an example if we consider a 30 85 GF setting then the first value 30 is the Low one influences the deep portion of the dive and 85 is the High one influences the shallow portion of the dive Liquivision Products
33. cent from the depth of the previous waypoint to the depth of this waypoint starting at the moment the previous waypoint ends and at the ascent descent rates configured in Ascent Rate Descent Rate submenu The time of this waypoint is calculated automatically as the moment the diver reaches the depth of this waypoint If you have recently been diving and are still saturated from those dives there will be an additional item in the Runtime submenu which is Remain SI or Remaining Surface Interval Here you can configure the number of hours and minutes that you plan to stay at the surface before going on the dive that you are planning Liquivision Products Inc 20 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Keep in mind that the gas or setpoint switches configured in this submenu have little to do with XEO gas or setpoint switch suggestions or automatic switches if your Auto Switch feature is On The latter are based on the Best Gas concept see Gas settings or the pre programmed On Descent and On Ascent values see Dive Setup settings above Once you set up your waypoint and choose OK you will have the option to e Add another waypoint e Compute your deco Other thing to remember is that the Compute Deco feature might produce unexpected and wrong results if you manually enter waypoints that are breaching your decompression ceiling As an example if you enter a 90m 300ft waypoint aft
34. cloth Liquivision Products Inc 50 Revision 0 17 LIQUIVISION X O Dive Computer 4 Unscrew the battery cap with a coin Gently turn counter clockwise 5 Continue with your fingers 6 Place the battery cap aside on its back 7 GENTLY pull the battery holder out Use your fingers to grab the little screw sticking out of the battery holder GENTLY pull the battery holder out of the casing g Pulling too hard can break the wires Liquivision Products Inc 51 User Manual Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual 8 Pull out just enough to access the battery e DO NOT pull out all the way It can break the wires 9 Remove the old battery Lift at the front of the battery away from the spring 10 Insert new battery Flat end against the spring in the back Bumpy end in the front 11 Slide battery holder back in CORRECTLY CORRECT The black wire is in line with bottom of the XEO case as shown by red line and The two green edges of the battery holder are parallel to the blue line about 90 to red line INCORRECT in any other position the battery E holder will not slide into the casing all the way CORRECT INCORRECT 12 The battery holder should go in deeply A correctly inserted battery holder should slide deep into the casing The top of the battery holder should be in line with the lowest battery cap thread shown with a dot
35. e The downloads window will pop up if it does not go to Tools gt Downloads Liquivision Products Inc 55 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual The top item in the downloads window will be XENXEODriversSetup exe Double click on it You will be asked Are you sure you want to launch XENXEODriversSetup exe Click OK The drivers will be installed You will briefly see a black window pop up and then disappear If you do NOT see the black command window pop up for several seconds then please double click on XENXEODriversSetup exe for a second time in the downloads window e On some computers anti virus software will clear the download window automatically If that is the case on your computer you will need to browse to your personal downloads folder and launch XENXEODriversSetup exe from there directly e Once the black command window has appeared and finished disappeared then plug in the XEO PC interface into your desktop computer Plug the USB cable into the XEO PC interface box and then plug the other end of the USB cable into your PC The Found New Hardware wizard will launch Click Do not connect to the Internet and continue the prompts At the end Windows should inform you that your New Hardware is Ready to Use PC Drivers Google Chrome e Click here to download the driver install package http Mliquivision com downloads XENXEODriversSetup exe e When the download is finished a
36. e manual for details Liquivision Products Inc 40 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Y our maximum depth will reset 1f you surface for more than the Minimum Surface Interval Decompression Information Zone The horizontal section in the middle of the screen is reserved for your decompression information Each number in this section has an short name or label right above it Here is a list of available data Deco Info Zone 1 OC Dive With No Deco 2 CCR Dive With Deco 3 OC Dive With Deco e TTS Time To Surface is total time it should take you to get to the surface if you were to precisely follow your XEO s ascent schedule including all the stops and recommended gas switches It is printed in minutes and rounded up to the nearest minute e NDL No Decompression Limit is the maximum time you can still stay at your current depth before the XEO ascent schedule will include decompression stops It is displayed in minutes and rounded down to the nearest minute e STOP FOR Shown together see Picture 2 this pair describes the deepest decompression stop on your XEO s ascent schedule Below STOP there is depth of this stop in meters or feet depending on your Units settings and below FOR is its duration in minutes rounded up to the nearest minute If you are shallower than this stop depth below STOP will be blinking to remind you to go back deeper e STOP Shown as a stand
37. eature that makes sure your XEO will not stubbornly switch your gas to the Best Gas for your current depth even though you switched gas manually to another gas Normally according to the Best Gas concept the Auto Switch would switch you to your Deco Gases when you start the dive until you exceed their respective MODs Similarly 1f you were to switch gas manually the Auto Switch would try to switch you back to your Best Gas To prevent this we created Manual Override which turns on every time you start a dive or switch gas The Manual Override turns off once you reach a depth where the gas you are actually breathing becomes the Best Gas Here are some examples If you start your dive with the Default Gas being Air and a couple of Nitrox mixes as Deco Gases Manual Override will be on Manual Override will prevent your XEO s Auto Switch from switching you to any gas other than Air on your way down until you reach the depth where only Air 1s breathable 1 e where Air is the Best Gas If you decide to switch to your first Deco Gas on a decompression stop slightly deeper than the MOD of that gas your XEO will let you do so manually although it will display a high PO2 warning It will not switch you back to Air because Manual Override will be in place When you ascend to the depth where that Deco Gas is breathable 1 e where it is considered the Best Gas Manual Override will turn off This way when you reach depth where the next Deco G
38. eep battery life in mind when setting screen colors The OLED screen is an RGB screen which means it has red green and blue pixels To display the color green for example it only needs to light up one pixel the green one To display any other colors the screen must light up a combination of pixels To display white it must light up three pixels full force Therefore the most economical display colors would be red green and blue The least economical display color is white The standard Liquivision display color scheme is designed to balance readability with economical battery use Liquivision Products Inc 47 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Detailed Rules For Optimizing Battery Life 1 Brightness Brightness has the biggest effect on battery life As a general rule HIGH brightness gives you HALF the battery life compared to MEDIUM brightness Similarly MEDIUM gives you HALF the battery life of LOW This means that LOW brightness gives you FOUR TIMES more battery life than HIGH brightness The best way to optimize battery life is the Auto Dim feature 2 Colors Colors have a dramatic impact as well Primary colors pure green pure red dark blue consume the least battery power Compound colors such as yellow orange and gray burn more battery power Compound colors those that require all three colors such as light blue and light gray burn the most battery power You should use compound colors with c
39. emove any debris If there is something really stuck to the O ring better remove it clean it and start again 18 Also check the casing for dust or debris 19 Screw in the battery cap 1 Place the cap lightly in the opening 2 First Turn counterclockwise until it clicks this will help align the threads 3 Then turn clockwise to tighten the cap If something feels wrong stop and start again o DO NOT force the cap your could damage the threads DO NOT Overtighten The battery cap should be flush in line with the surface of the XEO unit o DO NOT screw the cap in too far YOU ARE DONE Liquivision Products Inc 54 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual XEOPCINTERFACE The XEO PC Interface can be used to download your dives and to update your XEO software This requires a few different steps 1 Install Drivers onto your PC so your PC knows how to talk to the PC interface 2 Install the Liquivision Dive Logger onto your PC so your PC knows how to interpret the dive log data emitted by the XEO 3 Install the Liquivision Firmware Updater onto your PC so your PC knows how to transmit a Firmware Update to your XEO 4 Install Liquivision Firmware Updates onto your XEO We will walk you through all these steps in some detail with links to all the relevant downloads First You Need To Install Drivers Onto Your PC Before you can download dive logs o
40. ent to be silenced until the end of the dive Alarms you can silence are e Depth alarm e Time alarm e Ascent Descent Rate alarm Other alarms 1 e deco ceiling alarm and gas related alarms cannot be silenced For example if you have exceeded your maximum depth and time alarm settings both of these alarms will be on If you choose to Silence Alarms you will turn both of these alarms off and neither of them will be displayed on this dive anymore no matter what depth you go to or how long you stay there for However 1f you exceed your maximum ascent rate on the same dive 1t will still cause an alarm Keep in mind that the descent and ascent rate alarms are the same alarm if you silence the descent rate alarm on the way down you will not see alarm go off if you ascend too fast on the way up Liquivision Products Inc 31 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 3 Change Setpoint This menu item appears only when you are diving in CCR mode and provided you are not bailing out In the surface menus you can configure your High and Low setpoints see Dive Setup menu item If you are currently diving either the High or the Low setpoint then only the alternate option will be displayed This means that if you re at the Low setpoint the first item will be High and conversely if you re at the High setpoint the first item will be Low If you are currently diving a custom
41. er interface e Liquivision s patent pending ceramic pressure sensor technology e User changeable lithium battery e Maximum depth 200m 656 ft e Accuracy exceeds the limits of EN13319 2000 e 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 e Air nitrox and trimix capability allowing up to 10 gas mixes CCR upgrade allows accurate decompression for rebreather divers based on fixed PO2 setpoints requires the purchase of a CCR Unlock PIN e Biihlmann ZH L16C with optional Gradient Factors e Visual alarms e Built in dive planner e Built in dive simulator e Lifetime dive log memory 3500 hrs e Imperial Metric settings e Windows and Mac downloadable PC interface hardware sold separately Liquivision Products Inc 7 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual GETTING STARTED BEFORE DIVING Register Your Unit Activate Your OC Software Free Your XEO comes pre loaded with Open Circuit dive software B hlmann ZH L16C algorithm with 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 un
42. er which your decompression should start at 42m 140ft but you manually overwrite it by creating next waypoint at 30m 100ft then you would get erroneous decompression computations 4 4 Alarms Your XEO can display visual alarms when you exceed any of the following parameters Maximum depth Maximum dive time Maximum ascent rate Maximum descent rate When the alarm is activated for any parameter that piece of information will start blinking on your screen for one minute If you do not correct the situation within one minute the parameter display will invert i e it will appear as black letters on colored background until you correct situation causing the alarm Once you do that the alarm will turn off The only exception is a time alarm It will blink for 1 minute after which it will go back to normal The reason for this is that you cannot correct the fact that you exceeded your maximum time 4 4 1 Alarms On Off The default setting for Alarms is On Selecting Off allows you to turn all the alarms off entirely If you select Off even if some alarm limits are exceeded you will not see ANY alarm The use of this option is discouraged 4 4 2 Depth Here you can set the depth at which you want your Depth alarm to activate 4 4 3 Time Here you can set the time during your dive when you would like the Time alarm to activate One of the uses for this feature could be to remind you that your maximum bottom
43. ering 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 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 Deco Settings menu item Tap Down three times to move the cursor to the word Exit Tap Left Right to exit this submenu You will return to the Dive Planning menu item Liquivision Products Inc 14 User Manual Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 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 then select Exit 17 You will now be back in the main menu Tap Down three times to reach Exit again and tap Left to select 18 T
44. ery gas you and your buddies Liquivision Products Inc 32 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual are taking underwater If your buddies use different gases than you do then you should enter them as Backup gases and revert to them in case of an emergency 5 Review Runtime With this menu option you can view your pre planned runtime It is the same runtime you have been editing in Runtime menu It will highlight your current waypoint based on the time of the dive If you have deviated from your dive plan this highlight is not reliable Also this runtime should NOT be used as deco information only as a reference to original plan If you overstay at depth or otherwise deviate from your plan this runtime becomes useless it is not recomputed By tapping into any of the waypoints you exit back to the dive screen 6 Display You can adjust a limited set of display features underwater 6 1 Brightness The Brightness setting has three levels low medium and high The darker the water the lower brightness you need to see your display clearly Also you might find high brightness in the dark water too bright that is it could be too much light compared to environment you re diving in On the other hand in clear shallow water with lots of sunlight you will need high brightness to see the display properly Keep in mind that higher brightness burns more battery so you should select the lowest br
45. etail page 5 2 Log Detail In this page you will see more detailed information on the selected dive Below is a list of data you will see in the same order as it will be displayed e Dive No the number of this dive numbered in the sequence that it occurred e Max Depth Liquivision Products Inc 24 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual e Avg Depth this is average depth of your whole dive so if you have reset average depth during the dive it won t affect this number e Duration dive time in hours and minutes e Date day of the month month and year of the dive e Time the time of day at which you entered the water e Min Temp minimum temperature over the whole duration of the dive e Max Temp maximum temperature over the whole duration of the dive e Surf Int the surface interval since last dive e CNS start the central nervous system oxygen saturation in percent at the beginning of the dive e CNS finish the same value at the end of the dive e OTU oxygen toxicity units acquired throughout the duration of this dive e Depth Graph by choosing this option you will see depth profile of your dive e Temp Graph by choosing this option you will see temperature profile 5 3 Depth Graph The depth graph spans whole width of the screen with the start of the dive at the left most part and the end of dive at the right most part The top of the screen represents the s
46. etpoint to the Low setpoint during your ascent If you follow a different schedule e g you spend all your bottom phase on the Low setpoint you should turn Auto Switch Off Even when you turn your Auto Switch Off you should make sure to configure your On Descent and On Ascent depths Here is how they will affect ascent schedule Liquivision Products Inc 35 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual e When the ascent schedule calculation starts it considers your current setpoint whatever it is e If your depth is at least the On Descent or deeper the setpoint used to calculate your schedule will be High This means that if you are using the Low setpoint during your bottom phase your XEO assumes that after you start your ascent you will manually switch to High e When your depth on the schedule becomes equal or less than the On Ascent value the setpoint on your schedule will be changed to Low If you choose your Auto Switch to be On it will switch your setpoint to e High if your current setpoint is Low but not any custom setpoint and the depth you are at is more than or equal to the On Descent depth e Low if your current setpoint is High again not any custom setpoint and the depth you are at is less than or equal to the On Ascent depth Gas settings In the Gases submenu you can configure up to 10 different gases to be used during
47. his will take you back to the main Surface Display of the XEO which should now say Ready To Dive Liquivision Products Inc 15 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual GETTING STARTED XEO Surface Display When you turn your XEO on by tapping Down three five times 1t will go to the Ready To Dive Surface Display provided you have unlocked it set up the Bias 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 disp
48. ightness that meets your needs on a given dive 6 2 Auto Dim You can use the Auto Dim feature to fine tune the brightness of your display If you need high brightness on the surface and lower brightness at depth you do not need to adjust it manually Instead you can set your Auto Dim setting to the depth at which you want your display brightness to be reduced to Low By using the Auto Dim feature here s what will happen e At the surface display brightness will be at the setting chosen in the Brightness menu e Once you reach your Auto Dim depth and below the brightness will switch to Low e Between these two the brightness will decrease linearly with depth e g at half of the Auto Dim depth it will be halfway between the surface brightness setting and Low If you set your Brightness setting to Low the Auto Dim feature will have no effect The default Auto Dim setting 1s Off You can adjust it in 10m 30ft increments 7 Stop Simulation This option is displayed only if you are underwater in a simulated dive to learn more about dive simulation please refer to the Simulate Dive section of the manual In such a case choosing this will immediately stop simulation and return back to the surface menus Liquivision Products Inc 33 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual DIVING WITH YOUR XEO Dive Planning Your XEO has a wide set of features that can assist
49. is will define how deep your gases will still be considered breathable Your XEO assumes that oxygen is also narcotic therefore the END for nitrox mixes will be the same as the END of air Only helium can reduce the END of a gas 4 5 6 Last deco stops In this submenu you can define a set of Last Deco Stops As a default XEO will compute deco schedule so that the last deco stop is 3m 10ft then 6m 20ft 9m 30ft etc Here you can configure your own set of last decompression stops if you want them to be different from the default One very popular example is to set the last decompression stop at 6m 20ft so that you won t be affected as much by wave action You may wish to configure them in yet another way for your own reasons Please keep in mind however that you should not put them too far apart You can create up to 5 Last Deco Stops By tapping into each one you can Copy Edit or Delete it The Copy and Add options are only available if there are fewer than 5 Last Deco Stops 4 6 Your Saturation This menu item displays a screen with your current saturation Your Saturation screen after a period of no diving Your Saturation screen after a deep dive e Your current CNS Central Nervous System oxygen saturation refer to Oxygen loading section e OTU Oxygen Toxicity Units left for today refer to Oxygen loading section e Time to full desaturation from inert gases e Your theoretical allowed pressure and the a
50. ith 50 oxygen XX XX for trimix e g 20 30 for trimix with 20 oxygen and 30 helium or Air for air that is gas with 21 oxygen and no helium You can switch your current gas in Change Gas menu section When you are diving CCR with bailout mode off below the type of dive CCR you will have your current setpoint displayed with one decimal place You can switch your current setpoint in Change Setpoint menu section Gas Alarms Gas alarms will be displayed in the same place as your gas or setpoint If you are diving OC or CCR in Bailout Mode then Your Best Gas is the gas with the highest content of oxygen among gases that are breathable at your pressure taking into account your min max PO2 END settings If there is such a gas 1 e there is at least one gas in your gas list that is breathable and you are breathing different gas then Switch Alarm is triggered It is displayed as a Blinking Gas Label Furthermore you can experience following alarms e PQO2 is triggered if the gas you are breathing at your current pressure has either lower PO2 than your Min PO2 or higher PO2 than o POZ2 dive if this gas is configured as Dive Gas o PQO2 deco if this gas is configured as Deco Gas o Both PO2 dive and PO2 deco if this gas is configured as Backup Gas or Custom Gas e END it is triggered is gas you are breathing at your current pressure has higher END than than your configured Ma
51. lay 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 1s more than 3 30V The battery icon is solid yellow when there is less than 3 30V left of battery power about 2h of diving The battery icon is solid red when there is less than 3 15V left of battery power 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 s Battery Liquivision Products Inc 16 Revision 0 17 LIQUIVISION XEO Dive Computer SURFACE MENUS Main Menu 1 2 3 4 gt 6 Shut Off Enter PIN only if you haven t entered it yet LOCK UNLOCK only if the device have been unlocked Dive Planning 4 1 Dive Setup 4 2 Gases 4 3 Runtime 4 4 Alarms 4 4 1 Alarms On Off 4 4 2 Depth 4 4 3 Time 4 4 4 Ascent Rate 4 4 5 Descent Rate 4 5 Deco Settings 4 5 1 GFs L H 4 5 2 PO2 dive 4 5 3 PO2 deco 4 5 4 Min PO2 4 5 5 Max END 4 5 6 Last deco stops 4 6 Your Saturation 4 7 Simulate Dive Dive Log 5 1 Log Summary 5 2 Log Detail 5 3 Depth Graph 5 4 Temperature Graph Display Settings 6 1 Brigh
52. ltitude to which it corresponds 4 7 Simulate Dive This item is here so you can experiment with ascent schedule calculations gas switches emergency modes etc without getting yourself or your XEO wet When you enter Simulation it will open sub Liq uivision Products Inc 23 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual menu asking you for depth and time of the dive its speed whether it s normal 1x or faster 2x 4x etc up to 16x faster than normal and then you can select Start A couple of things to note about the XEO simulator e The simulator follows descent and ascent rate limits e It takes a moment to turn on since the simulation starts at Om Oft but the XEO considers a dive after divers descends below 1 6m 5 2ft e If the time you set is too short to reach the specified depth the simulator will just keep descending for the allotted time and then start ascending without reaching the depth you specified e Please note that the Auto Dim option is not available during a simulation You can stop the simulation at any time by tapping the unit 3 5 times to enter the underwater menus and choosing Stop Simulation to learn more refer to the Stop Simulation section of the manual 5 Dive Log The Dive Log keeps track of dives you did with your XEO including their depth and temperature profiles With use of a XEO PC Interface and related software you can download this information
53. manual UNDERWATER MENUS Main Underwater Menu 1 EMERGENCY 1 1 Bailout Undo Bailout only when on CCR 1 2 Gs Off Undo GFs Off 1 3 Lost Gas only when on OC or in bailout Silence Alarms only available if any alarm is on Change Setpoint only when on CCR Change Gas only when on OC Review Runtime Display 6 1 Brightness 6 2 Auto Dim 7 Stop Simulation only if it is a simulated dive not a real dive DQO Uu E WN EMERGENCY This submenu is meant for emergencies only With the settings in it you can affect how XEO calculates your ascent schedule You can familiarize yourself with them by using Simulate option in Dive Planning submenu 1 1 Bailout Undo Bailout This option will appear in the menu if you are diving in CCR mode By selecting this option you are informing your XEO that you have just switched to OC to bailout The XEO will assume that you are now breathing your diluent in OC mode and will also use all the other gases you have configured as Dive Gas or Deco Gas see Gas Settings section to plan your ascent You can reverse your bailout by returning to the EMERGENCY submenu and choosing Undo Bailout Liquivision Products Inc 30 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 1 2 GFs Off Undo GFs Off This option is meant for a situation in which you need to get out of the water as soon as possible It will remove any Gradient Factor based conservatism you have set up and will compute yo
54. n Dive Logger or any other available dive logging program that supports downloading logs from your XEO bottom timer To download your dives first Make sure the XEN XEO FTDI drivers have been installed on your computer Instructions Make sure the Liquivision Dive Logger has been installed on your computer Instructions Then launch the Dive Logger program by double clicking on the shortcut on your PC desktop Make sure the XEO PC Interface is properly connected to your computer Instructions Then pretty quickly e Pick up your XEO and turn on its wireless transmitting function o tap 1t three times to wake 1t up o tap 1t three times again to enter menu mode o tap down through the menu options until you reach Connect To PC o tap the side of your XEO to select this option o you will see a message WAIT FOR PC e Replace your XEO in alignment with the PC Interface e Return to the Dive Logger Software and turn on its transmitting function E enu Computer Help o Select Computer from the top menu o Select Connect Locations You should see a window like this pop up Connect your Liquivision Xen Choose your device connect and begin transfer Device NFO 1 USB device s found NFO LV Wake Up start V Wake Up End INFO Requesting device info INFO LV Wake Up start INFO LV Wake Up End demarrer Et fa Liquivision Products Inc 58 Revision 0 17 LIQUIVISION XEO Dive Com
55. n percentage in the gas between 0 100 e He helium percentage in the gas between 0 100 e Mode Dive Gas Deco Gas Backup Gas or Off Please note that O2 He cannot be more than 100 Also the nitrogen percentage of a gas is calculated as 100 O2 He This submenu will also display Maximum Operating Depth MOD of all Dive and Deco Gases This number is calculated by the XEO based on all your settings and has a limit of 200m 650ft No MOD will be displayed for Backup and Off Gases If you change a Backup or Off Gas into a Dive or Deco Gas 1ts MOD will be calculated Existing Gases If you tap into any of existing gases you will see this submenu e Set Default this option will appear only if this gas is not already set as the default Default Gas is the gas you start breathing when you begin your dive on OC or the diluent when you dive on CCR The Default Gas must always be a Dive Gas so if you change a Backup or Liquivision Products Inc 19 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Deco Gas to Default this will automatically make it into a Dive Gas see Gas settings for more info e Copy this option works in a similar way as Add Gas but it has the additional benefit of pre populating the gas parameters with same values as the gas you chose You can then edit these parameters to create a new gas e Edit once again this option has a similar interface as Add Gas bu
56. nit low brightness green font battery used within a month of initial use although 20 30 hours is more typical if you use the standard Liquivision color scheme on medium brightness and all the dives are done within a month of first using the battery Battery life is shown by the battery indicator on your XEO A Green indicator means that you have enough battery power to complete a normal 2 hour dive The safest way to perform a long dive 5 hours is to insert a fresh battery prior to the start of your dive A Yellow indicator means a battery change is strongly recommended A Red indicator means that you must immediately change your battery You should always check the battery life remaining on the surface prior to beginning your dive by briefly entering simulator mode with your unit Your XEO uses more power in dive mode than in surface mode It may show a green indicator in surface mode but a yellow one in dive mode and you can check this by starting a dive simulation Once the battery voltage drops well below red zone the unit will enter power failure mode If that happens you need to change the battery and wake up your unit with taps it will perform a software check to make sure that a new battery is in place The discharge curve of lithium thionyl chloride batteries is very flat with a very sudden drop off as shown in the graph below Liquivision Products Inc 46 Revision 0 17 LIQUIVISION XEO Dive Computer User
57. nn A A Decompression Decompression Sickness Berlin Springer Verlag 1984 ISBN 3540133089 Liquivision Products Inc 62 Revision 0 17
58. nsation Surface Pressure AdJUStMEDSS ooooooooooooooonnnnnnnnnnnnnnnnnnnnnonononnn nn nono no nono nono nono nono nn nnnnnnnnnnos 44 CARINO FOR OU REO ataron isa pte 45 Postebive Cate and SLOTAsO ati ri 45 Bons Torme E SO 2c cee r E E ie 45 Replacement Battery SOTA Tb esssoienicrieo AETERNA EENAA ee eee EENE 45 As A A E E E O 45 IMPORTANT INFORMATION ABOUT XEO s BATTERY ooooccooocccnnnnnoccnnnnnoconnnnnnccnnnnanccnnnnnnconnnnnnoss 45 APO BON o APOCO PPP e o A E caeeece sees hnaenueenanseees 45 AP Po E A EEE E ee eee 46 How To Determine XEO Battery Life RemMaldIOg ooooooonnonnncnnnnnnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnonnnnnn nono nono nnnnnnnnss 46 Basic Rules For Optimizine Battery Life ciencias eoliano ipie raono E arro asui E 47 Detailed Roles For Optimizing Battery Lilo esserne nn ean EEEE EENE aE EEEE DRaa 48 Battery Savings Mode When Your Battery Voltage Drops Below A Critical Level coccccccccnnnnnmommmmmm 48 Tables Showing Estimated Battery Life Depending On User SettiMgs cccccccccccnnnnnnnnnnnnnnnnnnnonnnnnnnoninininaninoss 49 CHANGING THE XLS BA CLERO pia 50 AFOPCINIEREACT nos 55 First You Need To Install Drivers Onto Your PC ooccocccncccncconoconioconeoconoconoconoconoconoconnrcnnccnnronaronaronaronaronaronanons 55 Then You Can Install the Liquivision Dive Logger Onto Your PC oooooonnnnnnconcnnnnnnnnnnnnononononncnnnncnnnononnnnnnnononononos 56 How To Connect the XEO PC Interface To Your COMPpU
59. on After you select Compute Deco a window will pop up showing among other values the OTU left for the day of that dive If you plan a dive on the next day which you can do by using Remaining SI option then the OTU left will be displayed for day after that dive not for today If you exceed your CNS limit during the dive you will see a Gas Alarm noting it the blinking red PO2 label on the screen Entering the water Turning Your XEO On We recommend that you turn your XEO on yourself before you enter the water to check the remaining battery power and to make sure that all is functioning properly You can turn it on by tapping the unit in the Down direction 3 5 times Otherwise it will turn on automatically few seconds after you take it deeper than 1 6 meters 5 25 feet Liquivision Products Inc 39 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Beginning Your Dive When you start to descend and go below 1 6 meters 5 25 feet your XEO will turn into dive mode Dive Display Currently there is a single underwater display layout You can edit the colors of all the items on your screen although you should be careful to consider how the changes you make will impact battery consumption Refer to the Colors menu item for more information on setting colors and to the Important Information on XEO s Battery for impact of color on power consumption Dive Time The large yellow number in the upper righ
60. other day and lead to temporary or permanent injury or death You can die while diving WARNING 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 unit 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 The XEO dive computer hardware will fail like any electronic equipment whose components mature and age It can fail during your dive and stop providing you with critical information It is your responsibility to monitor battery voltage and ensure the XEO dive computer has enough battery life to complete your planned dive You must have a plan to handle a XEO dive computer failure during your dive Do not risk your life on only one source of information Liquivision Products Inc 5 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 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
61. period it will be counted as continuation of previous dive instead of a new one This also means that all the numbers such as maximum depth average depth dive time etc will not be reset After that if you decide to dive again it will be counted as a new dive Last dive information When on the surface and not in Sleep Mode your XEO will display information about the last dive that you have done Surface interval it is time elapsed since your last dive If it is less than 24 hours you will see the number of hours and minutes If it is more than 24 hours you will see number of days and hours If it is more than 10 days ago you will not see any surface interval Last depth 1s the maximum depth of your last dive with one decimal place Depending on your unit settings it will be either in meters or in feet and you will see m or ft printed after the number Last time is the total time of the last dive displayed according to your dive time settings either as total number of minutes or as hours minutes Altitude Compensation Surface Pressure Adjustments The XEO does not have a water sensor that can sense whether it 1s in the water based on wetness Instead your XEO continuously tracks atmospheric pressure to determine the surface pressure at the start of your dive When it senses a sudden change in ambient pressure it understands that you have entered the water and that a dive is beginning
62. puter User Manual How To Install The Liquivision Firmware Updater Onto Your PC In order to update the firmware inside your XEO you need the XEO PC interface device and you need to install a utility called the Liquivision Firmware Updater If you do not have a XEO PC interface and you would like to update the firmware on your unit your dealer should be able to do it for you PC Firmware Updater Internet Explorer e Click here to download the driver install package http liquivision com downloads LV FirmwareSetup exe e You will be asked if you want to Run or Save the program Click Run e The file will download and the install wizard will launch e Follow the wizard and the Liquivision Firmware Updater will be installed PC Firmware Updater Firefox e Click here to download the driver install package http liquivision com downloads LV FirmwareSetup exe You will be asked if you want to save the file Click Save File The downloads window will pop up if it does not go to Tools gt Downloads The top item in the downloads window will be LVFirmwareSetup exe Double click on it You will be asked Are you sure you want to launch LVFirmwareSetup exe Click OK e Follow the wizard and the Liquivision Firmware Updater will be installed If for some reason the downloads window is empty then browse to the location that Firefox stores downloaded files and double click on LVFirmwareSetup exe from there PC Firmware Update
63. r Google Chrome e Click here to download the driver install package http liquivision com downloads LV FirmwareSetup exe When the download is finished a tab will appear in the far lower left corner of Chrome Left click on the LVFirmwareSetup exe tab that appears in the far lower left corner of Chrome You will be prompted to run the program click Run Follow the wizard and the Liquivision Firmware Updater will be installed Mac OSX Firmware Updater The Liquivision Firmware Updater Mac OSX version should be available once we release the XEO currently expected end July 2011 Prior to then if you want to upgrade your firmware you will need to use a PC or have your dealer upgrade your software How To Install the Newest Firmware On Your XEO You should always run the latest and most recent software on your XEO You may already have the latest version which makes an upgrade unnecessary You can find out which version you are running and whether you need to upgrade by checking the XEO Software History http liquivision com downloads XEOSoftwareHistory php Some early versions of the software have minor bugs which were fixed in later versions Liquivision Products Inc 59 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual If you have determined that your software should be upgraded follow the steps below For starters e Make sure the XEN XEO FTDI drivers have been installed on your computer Instructions e Make
64. r upgrade your XEO firmware you need to download and install the appropriate drivers for your PC or Mac The drivers are made by FTDI If you are technically minded and want more information on them you can visit www ftdichip com Make sure that your XEO PC interface is NOT plugged in to your desktop computer If it is plugged in then please UNPLUG it before proceeding PC Drivers Internet Explorer e Click here to download the driver install package http liquivision com downloads XENXEODriversSetup exe You will be asked if you want to Run or Save the program Click Run The file will download and launch The drivers will be installed You will briefly see a black window pop up and then disappear If you do NOT see the black command window pop up for several seconds then please repeat the process e Once the black command window has appeared and finished disappeared then plug in the XEO PC interface into your desktop computer Plug the USB cable into the XEO PC interface box and then plug the other end of the USB cable into your PC The Found New Hardware wizard will launch Click Do not connect to the Internet and continue the prompts At the end Windows should inform you that your New Hardware is Ready to Use PC Drivers Firefox e Click here to download the driver install package http liquivision com downloads XEN XEODriversSetup exe e You will be asked if you want to save the file Click Save File
65. sensitivity means it will be less sensitive and react to stronger taps only Some divers like to set their Tap Sensitivity to Low when in caves or wrecks to prevent accidental bumps on the surrounding rock or wreck to launch their unit into menu mode 7 4 Tap Count You can set this either to 3 or to 5 By choosing either of these you set the number of taps that will wake up your XEO from Sleep Mode and the number of taps that will take you to the menus The default setting is 3 Some divers find that the XEO can wake up at random due to a bumpy ride to a dive site or due to accidental impacts during a dive in a closed environment for example In those cases we recommend changing the setting to 5 7 5 Minimum Dive This allows you to control the minimum dive time required for the dive to be classified as an actual dive For example if you set it to 1 minute then any dive shorter than that will not be logged You can control this number in increments of 10 seconds Minimum value is 0 maximum 600 seconds 7 6 Minimum Surface Interval This allows you to control the minimum time of surface interval before next dive is classified as new dive If you stay on the surface for shorter time than the specified interval your next descent will still be considered a part of the previous dive and both descents will be logged as one dive You can control this value in increments of 1 minute Minimum value is 0 maximum 30
66. setpoint both options will be displayed High and Low Also there is a Custom Setpoint option By choosing it you can change your setpoint to any value between 0 3 up to 2 0 in 0 1 increments 4 Change Gas This menu item appears only when you are diving OC or when you are diving CCR in bailout mode In the surface menus you can configure your gas settings see Gases menu item When you tap into this submenu you will see list of gases that are allowed for the depth you re at This list is based on your min max PO2 END settings see Deco Settings menu item and your gas settings A gas set in Dive mode will use PO2 dive as maximum PO2 while a gas set in Deco mode will use PO2 deco as maximum PO2 The gases will be listed from one with the highest content of O2 to the one with the lowest This list will only display gases that are configured as Dive or Deco gases There is also an option to Show All that will display ALL available gases in the order they are in the Gases menu It will also include gases that are configured as Backup gases and ones that you have set as Lost during your dive Finally there is an option called Custom Gas with which you can configure an additional gas underwater Doing this while diving is very troublesome so we highly recommend that you take steps BEFORE the dive to avoid using this option The best thing is to input ev
67. st have the XEO PC interface device and the FTDI drivers must be installed on your computer as described above PC Dive Logger Internet Explorer e Click here to download the Liquivision Dive Logger installation package http liquivision com downloads LV DiveLogSetup exe Liquivision Products Inc 56 Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual You will be asked if you want to Run or Save the program Click Run The file will download and the install wizard will launch Follow the wizard and the Liquivision Dive Logger software will be installed The wizard will install a shortcut to the Liquivision Dive Logger on your desktop To launch the logger double click on the shortcut Create a username for yourself and you re ready to go PC Dive Logger Firefox e Click here to download the Liquivision Dive Logger installation package http liquivision com downloads LV DiveLogSetup exe You will be asked if you want to save the file Click Save File The downloads window will pop up if it does not go to Tools gt Downloads The top item in the downloads window will be LVDiveLogSetup exe Double click on it You will be asked Are you sure you want to launch LVDiveLogSetup exe Click OK Follow the wizard and the Liquivision Dive Logger software will be installed The wizard will install a shortcut to the Liquivision Dive Logger on your desktop To launch the logger double click on the shortcut Create
68. sure the Liquivision Firmware Updater has been installed on your computer Instructions e Connect the XEO PC interface to your computer with the included USB cable Instructions PC Internet Explorer Firmware Install e Click XEO Software History to download the latest XEO firmware The first file at the top of the page will be the most recent version e You will be asked if you want to Open or Save the program Click Open e The file will download and the Liquivision Firmware Updater will automatically launch e You should see something like this Liquivision device update Welcome Please choose package file lvp downloaded with which you wish to update your Liquivision device lent XenFirm 105 lvp Browse Device Ken Hardware version ALL Software version 1 05 OK Cancel Click OK then click UPLOAD For further instructions please see the All Users section below PC Firefox Firmware Install e Click XEO Software History to download the latest XEO firmware The first file at the top of the page will be the most recent version e You will be asked to open the file with the suggestion liquivision lvp Click Open then OK e The Liquivision Firmware Installer should launch and you should see something like this Liquivision device update Welcome Please choose package file lvp downloaded with which you wish to update your Liquivision device lent XenFirm 105 lvp Browse Device xen Hardware
69. t and Warranty This is required to transfer the balance of the Warranty from the previous owner to yourself Setup Gradient Factors Time amp Date Once you have registered and unlocked your XEO unit the main screen will still say NOT Ready To Dive Edit Your GEFs Time and Date 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 BuhImann ZH L16C algorithm 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 Gradient Factors Time amp Date You can find more information on Gradient Factors theory here Gradient Factors Liquivision Products Inc 8 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Liquivision asks you to enter the current Time and 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 1t could introduce errors into the surface interval calculations You will find step by step information on how to setup the Time and Date here E g Entering Your Free OC Software Activation PIN Setting Up Gradient Factors Time amp Date Unlock CCR functionality P
70. t hand corner of your display is the Dive Time Dive Time Dive time is measured in seconds starting from the moment your XEO reaches 1 6 meters 5 25 feet It will stop once you surface and it will reset once you have been on the surface for more than the Minimum Surface Interval Dive time can be displayed in several ways The minutes of your dive can be displayed as follows e minutes seconds e g 135 00 e hours minutes seconds e g 2 15 00 Please refer to the Show Hours section of the manual for details The seconds of your dive can be displayed as follows e as anumber e g 135 00 e a graphical indication of the seconds elapsed a bar display filling up to a full minute Please refer to the Analog Clock section of the manual for details Depth The green number in the lower right hand corner of the display is Max Depth your Current Depth If you chose metric units you will see the depth in meters with one decimal place in smaller font l l l i l Depth If you chose imperial units you will see the depth in feet with no q decimal places Please refer to the Units section of the manual for details on choosing units Maximum Depth The label MAX refers to the maximum depth you have reached over your entire dive It is displayed as a single number without decimal places It is displayed either in meters or in feet depending on your Units setting refer to the Units section of th
71. t when you select OK the gas will be edited not added e Delete this option will appear only if gas you have chosen is not the only gas configured For more details on gas modes refer to Gas settings subsection of Dive Planning section of the manual 4 3 Runtime In this section you can enter your dive plan and review it later underwater You can also enter the beginning of your dive plan such as the deep portion of it and see what ascent schedule will XEO compute underwater assuming that you follow the dive plan precisely Each portion of the dive plan is a waypoint It consists of e Type it can be a Normal or a Switch waypoint e Depth depth of the waypoint e Time time when the waypoint ends If you select a Switch waypoint you will have the option of specifying the gas you wish to change to or the new setpoint you would like In the case of a Normal waypoint you can configure Depth and Time This waypoint describes the ascent or descent from the depth of the previous waypoint to the depth of this waypoint starting at the moment the previous waypoint ends and at the ascent descent rates configured in the Ascent Rate Descent Rate submenu of the Alarms menu If it is a first waypoint then the previous waypoint is assumed to end at time O and depth 0 In the case of Switch waypoint you can configure Depth and Gas Setpoint This waypoint will describe ascent des
72. tab will appear in the far lower left corner of Chrome e Left click on the XENXEODriversSetup exe tab that appears in the far lower left corner of Chrome e You will be prompted to run the program click Run e The drivers will be installed You will see a black command window pop up and then disappear e If you do not see the black command window please click on the XENXEODriversSetup exe tab on the lower left of the screen for a second time e Once the black command window has appeared and finished disappeared then plug in the XEO PC interface into your desktop computer Plug the USB cable into the XEO PC interface box and then plug the other end of the USB cable into your PC The Found New Hardware wizard will launch Click Do not connect to the Internet and continue the prompts At the end Windows should inform you that your New Hardware 1s Ready to Use Mac OSX Drivers The drivers can be downloaded from FTDI s website by clicking here http www ftdichip com Drivers D2XX MacOSX D2XX1 0 4 dmg Advanced Users If you are an advanced PC user and would like more information click here http www ftdichip com Drivers D2XX htm to visit the FTDI s website and select your OS and install the latest version of the D2XX drivers manually Then You Can Install the Liquivision Dive Logger Onto Your PC The Liquivision Dive Logger program allows you to download your dive logs from your XEO In order to use 1t you mu
73. teT oooonnnnnnnncnnnnnnnnnnnnnnnnnnononnnnnnnncnnnnnnnnnnnonnnnnnnnnnnnncnnnos 57 How To Launch A Dive Los Do Wilodd is lt cssesssasanacncasosaccnasensssacssadsseaneuanpoacactenoeaasassiseaneeaesaniosneotenoasaeasnsaaaetes 58 How To Install The Liquivision Firmware Updater Onto Your PC ooooooooooooonnnnnnnnnnoncnononnnnnnnonononononononnnnnnnnos 59 How To Install the Newest Firmware On Your XEO ooooooooococnncnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnonnnnnno nono nn non nnonnnnnnnnos 59 SUPPORT CONTACTS iii cios 62 Pe ONG Ae TAY rra 62 Liquivision Products Inc 4 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 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 Buhlmann ZH L16C algorithm first published in 1990 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 an
74. ted red line in the picture Liquivision Products Inc 52 Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual OPTION 1 CHANGE O RING If the O ring looks dry cracked or worn you may like to change the O ring in the battery cap If you wish to do this continue with Step 13 OPTION 2 DON T CHANGE O RING If the O ring is still in good shape please skip to Step 18 13 Remove O ring by squeezing with fingers Slide your fingers along the sides of the battery holder squeezing tightly to make the O ring stick out a bit Then grab the edge of the O ring and slide it off DO NOT USE PLIERS o DO NOT use pliers or any tool to remove the O ring because you can scratch the casing plastic and damage it This can prevent a good O ring seal in the future 14 Inspect the new O ring for dust or defects o DO NOT use a dusty O ring If the new O ring 1s not clean wash 1t with clear water and let it air dry 15 Lubricate the new O ring Use silicone O ring lubricant Apply a tiny amount to a dry O ring it will not absorb properly if the O ring is wet Roll the O ring between your fingers to spread the lubricant Remove any excess lubricant with your fingers Liquivision Products Inc 53 Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual 16 Ease O ring onto battery cap Starting at one side gently ease O ring over the battery cap 17 Check again for any dust or debris R
75. til 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 Gradient Factors Time amp Date 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 the date and time of your registration will be considered the start of your limited warranty period b 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 info liquivision ca 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 Agreemen
76. tness 6 2 Auto Dim 6 3 Refresh 6 4 Layout 6 5 Velocity 6 6 Analog Clock 6 7 Show Hours 6 8 Colors 6 9 Simulate Dive Preferences 7 1 Units 7 2 Log Period 7 3 Tap Sensitivity 7 4 Tap Count 7 5 Minimum Dive 7 6 Minimum Surface Interval Liquivision Products Inc 17 User Manual Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 7 7 Status 7 8 Enter CCR PIN 8 Salinity 9 Time Date 9 1 12h 24h 9 2 Time 9 3 Date 9 4 Year 10 Connect to PC 1 Shut Off Choosing this menu option will put your XEO in Sleep Mode which is designed to use minimum battery The XEO will still wake up when tapped 3 5 times It will also still keep track of surrounding pressure so it can wake up once you enter the water 2 Enter PIN This is where you enter the free PIN you receive upon registering your XEO unit There is a step by step description of the PIN entry process in the Entering Your Free OC Software Activation PIN Setting Up Gradient Factors Time amp Date section of the manual You may be required to re enter this PIN after a software update so please keep a written record of it for reference 3 LOCK UNLOCK This menu item allows you to lock all your menu settings so they cannot change accidentally due to random shaking e g during a bumpy ride to the dive site or knocking around in your backpack To lock just select the LOCK menu item by tapping on the side of your
77. to the dive screen There 1s 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 Gradient Factors Time amp Date 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 Liquivision Products Inc 12 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 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
78. tware updates www liquivision com downloads XeoSoftwareHistory php and install all applicable updates every time you prepare to use the Xeo You must have a plan to handle a XEO dive computer failure during your dive Do not risk your life on only one source of information Settings That Will Affect Your Deco Plan The following settings affect the data your XEO will use to compute your ascent schedule so please take a while to read and understand this section Dive Setup settings In the Dive Setup submenu you can choose the mode you wish to dive in Open Circuit OC or Closed Circuit Rebreather CCR Please note that while OC features are included in the standard software of your XEO unit CCR features require the purchase of an additional CCR Unlock PIN Settings related to OC Dives When diving OC one additional option you can set is Auto Switch you can turn it On or Off When it is Off there will be no automatic gas switches you will have to do every switch manually When it is On your XEO will automatically switch gas to the Best Gas see below in Gas Settings as long as following criteria are met e There is a Best Gas that is there is at least one gas that is breathable at your depth e And gas Manual Override is Off Liquivision Products Inc 34 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Gas Manual Override Concept Gas Manual Override 1s a f
79. u should see this Liquivision Products Inc 61 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Liquivision device update Erasing existing software DONE Sending Password DONE Writing new software to XenXeo this will take many minutes CPP tte PASS Resetting Xen Xea Starting Initial Sequence Xen Meo is reset FINISHED If you do NOT see the seven words PASS as shown above or six words PASS followed by a FAIL this is OK too then the install did not succeed and you should try again If the install succeeded you should now be able to pick up your XEO and use it To verify that the install succeeded enter the main menu and go to Preferences gt Status and the software version should be the same as the version that you tried to install i e 1 09 or something like that SUPPORT CONTACTS For general information please visit www liquivision com If you need immediate assistance we recommend that you contact your XEO dealer If you need futher help please contact us via www liquivision com contact php BIBLIOGRAPHY Baker Eric C Understanding M Values Immersed Vol 3 No 3 Fall 1998 Baker Eric C Clearing Up The Confusion About Deep Stops Buhlmann A A E B V llm and P Nussberger Tauchmedizin Barotrauma Gasembolie Dekompression Dekompressionskrankheit Dekompressionscomputer 5 ed Berlin Springer Verlag 2002 ISBN 3540429794 Buhlma
80. u should turn off your XEO once you have completed your dive It will eventually turn off on its own but you will conserve battery power by turning it off once you are done using it You should rise your XEO in clear non salty water after use to prevent the accumulation of dried salt in the infrared apertures that communicate with the PC Interface and in the pressure sensor aperture You should then wipe your XEO dry and store it in a dry place Long Term XEO Storage If you are planning to store your unit for more than 1 month you should remove the battery This will only cause you to lose time of day and date information All other settings and dive logs will remain We do not recommend removing your battery for shorter storage periods Every time you open and close the battery compartment there is a small risk of doing so improperly opening the possibility of flooding the battery compartment Replacement Battery Storage You should generally have at least one spare battery on hand to make sure you have the possibility of changing your battery should the situation require you to do so Spare batteries should be stored in a cool dry place away from direct sunlight Service information While we feel confident of the ongoing accuracy European CE regulations require the unit to be periodically checked for the accuracy of its depth and time readings You may contact your dealer regarding testing every 5 years IMPORTANT INFOR
81. ule 4 5 1 GFs L H You will be asked to enter your chosen Gradient Factors prior to your first dive You can either confirm the default 100 100 setting B hlmann ZH L16C algorithm or modify the numbers to increase conservatism The factors are listed in the sequence Low High Low represents the factor at the deepest decompression stop and High represents the factor at the surface Both factors can range from 0 100 although Low must be less than or equal to High In this example Low is set to 30 and High is set to 85 For more information about bias factors refer to Gradient Factors section 4 5 2 PO2 dive Here you can setup the maximum PO2 for your Dive Gas This will define how deep your Dive Gas will still be considered breathable You can set it to any value between 1 0 2 0 bar in 0 05 increments 4 5 3 PO2 deco Here you configure the maximum PO2 for your Deco Gas This will define how deep your Deco Gas will still be considered breathable You can set it to any value between 1 0 2 0 bar in 0 05 increments Liquivision Products Inc 22 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual 4 5 4 Min PO2 Here you configure the minimum PO2 for any of your gases This will define how shallow your gases will still be considered breathable You can set it to any value between 0 1 0 21 in 0 01 increments 4 5 5 Max END Here you configure the maximum END Equivalent Narcotic Depth for any of your gases Th
82. unit Your XEO is now locked and the menu item will change to UNLOCK To unlock just select UNLOCK by tapping on the side of your unit You will have to enter the unlock sequence It is 123 and you input it in the same way as you input your PIN number refer to Entering Your Free OC Software Activation PIN Setting Up Gradient Factors Time amp Date if you have trouble entering the number The screen will also remind you how to perform the unlock sequence The unlock sequence prevents random unlocking of the unit itis very improbable that random shakes will input that sequence 4 Dive Plannin This whole submenu is devoted to planning your dive here you can set up your unit for Open Circuit or Closed Circuit diving and automatic gas switching you can enter your gases set up alarms and compute your ascent schedule you will get the exact same one that the XEO will display during your dive provided of course you follow the dive plan precisely 4 1 Dive Setup Dive Setup OC CCR This menu item allows you to choose between Open Circuit OC or Closed Circuit Rebreather CCR modes To choose CCR you must purchase an additional CCR Unlock and follow the steps in the Unlocking CCR functionality section Liquivision Products Inc 18 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Auto Switch OFF ON This menu item allows you to set Auto Switch to either On or Off e When Auto
83. ur ascent schedule with the bare Biihlmann ZH L16C algorithm 1 3 Lost Gas If you have lost a gas that was to be used later for decompression it 1s very important to use this menu option to mark it as Lost This will prevent this Lost Gas from being used in ascent schedule planning If you fail to do this your ascent schedule will be wrong as the XEO will assume that you can still use that gas EXAMPLE Let s say you are planning to use Air and Nx50 on your dive and let s say your deco time would be 30 minutes on Air and only 20 minutes on Nx50 If you were to lose Nx50 but not mark it as Lost then your XEO would tell you that your total Time To Surface is 20 minutes because it would think that you can still use the Nx50 However as long as you keep your XEO set to Air throughout your decompression the XEO will continuously adjust 1ts calculations and in effect will keep you decompressing for 30 minutes At first the Lost Gas submenu displays only gases that are breathable at your current depth including your current gas If you select Show All it will display all Dive and Deco gases available except for those that you marked as Lost 2 Silence Alarms If an alarm 1s annoying you and you are confident that you should continue the decompression violation that is causing the alarm you can switch that alarm off Choosing the Silence Alarms option will cause ALL of the alarms that are on at that mom
84. urface of the water and the bottom of the screen represents the maximum depth reached this number is also printed on the screen By tapping you exit back into the Log Detail menu 5 4 Temperature Graph The temperature graph also spans whole width of the screen with start of dive at the left most part and the end of dive at the right most part There are two numbers printed on the screen one in bottom left that is temperature represented at the bottom of the screen and one in top left that is temperature represented at the top of the screen By tapping you exit back to the Log Detail menu 6 Display Settings This is a series of settings you can use to personalize your XEO s display 6 1 Brightness The Brightness setting has three levels low medium and high The darker the water the lower brightness you need to see your display clearly Also you might find high brightness in the dark water too bright that is 1t could emit too much light compared to environment you re diving in On the other hand in clear shallow water with lots of sunlight you will need high brightness to see the display properly Keep in mind that higher brightness burns more battery so you should select the lowest brightness that meets your needs on a given dive 6 2 Auto Dim You can use the Auto Dim feature to fine tune the brightness of your display If you need high brightness on the surface and lower brightness
85. val The Dive Planner will assume your next dive will begin once your Remaining Surface Interval has elapsed and it will compute your ascent schedule taking into account the Waypoints you set up and the saturations you would expect to reach based on these Waypoints See also the Runtime submenu for more information Whenever you begin a dive be it an actual dive a simulated dive or dive planning your XEO will assume that you are using your Default Gas see the Gas Settings section which when diving OC is the gas that you are breathing at the start of your dive or when diving CCR is your diluent Also in the case of CCR diving your XEO assumes that you start your dive using the Low setpoint Your gas or setpoint will change during an actual dive or simulated dive when o You enter the main underwater menu and use the Change Setpoint or Change Gas options o You enter the EMERGENCY underwater menu and use the Bailout option In bailout mode you are considered to be diving OC and breathing your diluent as a gas To change this you can use Change Gas o If the Auto Switch option is on either in OC or in CCR mode your current Gas or Setpoint may change as outlined in Settings That Will Affect Your Deco Plan Your gas or setpoint will change during dive planning when o You manually enter a Switch gas switch for OC setpoint switch for CCR see Runtime submenu for details o Your XEO computes ascent schedule more on this
86. version ALL Software version 1 05 OK Cancel Click OK then click UPLOAD For further instructions please see the All Users section below PC Google Chrome Firmware Install e Click XEO Software History to download the latest XEO firmware The first file at the top of the page will be the most recent version e When the download is finished a tab will appear in the far lower left corner of Chrome e Left click on the XEOFirmware lvp tab that appears in the far lower left corner of Chrome e You will be prompted to open the file click Open Liquivision Products Inc 60 Revision 0 17 LIQUIVISION Xeo Dive Computer User Manual e You should see something like this Liquivision device update Welcome Please choose package file lvp downloaded with which you wish to update your Liquivision device jent XenFirm 105 lvp Browse Device ken Hardware version ALL Software version 1 05 ok _ Camel Click OK then click UPLOAD For further instructions please see the All Users section below All Users OD ous SO So te a Xen Xeo Firmware Upgrader Rev B 1 PC Interface uni t s found Starting Initial Sequence Establishing Communication with XenMXeo SUCCESS Erasing existing software DONE Sending Password DONE Writing new software to Xen Meo this will take many minutes After several minutes of further data transfer the install will finish and yo
87. witch into them in an emergency Custom Gas you can configure a Custom Gas during your dive via the Change Gas underwater menu It can take a lot of time to configure a Custom Gas underwater so we urge you to avoid it as much as possible by pre configuring any gases you may want to use on the surface before your dive A Custom Gas will be used in ascent schedule calculation only after you switch into it and only until your ascent schedule reaches a depth where it can switch to some other Dive or Deco gas You can alter this by marking some of Dive or Deco Gases as Lost see below Lost Gas you can mark any of your Dive or Deco gases as Lost by entering the EMERGENCY gt Lost Gas underwater submenu This gas will then no longer be suggested as a Best Gas and will not be used in calculating your ascent schedule You should use this option when you actually lose a specified gas and do not expect to be able to use it on your ascent You can still access this gas by choosing Show All in the Change Gas underwater menu Decompression planning Your XEO runs the well documented and Biihlmann ZH L16C algorithm with optional Bias Factors available as a method of adding additional conservatism It consists of three parts e Actual decompression planning these calculations run continuously including while you dive stay at the surface put your XEO to sleep and so on and their purpose is to track your current inert g
88. x END e OTU if you have exceeded your OTU limit within the last few days refer to Oxygen loading section to learn more about how XEO computes those limits e CNS if you have exceeded your CNS limit refer to Oxygen loading section to learn more about CNS tracking Each of the above alarms is displayed as a Blinking Gas Label alternating with the red label of the alarm PO2 END CNS If more than one of them is on they will alternate as well Liquivision Products Inc 42 Revision 0 17 LIQUIVISION XEO Dive Computer User Manual Temperature The current temperature of the surrounding environment is displayed in the lower left hand corner next to the battery indicator It is displayed either in Celsius or in Fahrenheit depending on your Units setting refer to the Units section of the manual for details You will see a C or F letter next to the temperature value to let you know which units you have selected Keep in mind that the temperature sensor is inside the XEO unit so it may take a moment for it to adjust to a rapid external temperature change 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
89. you with your dive planning and preparation You can configure the basic mode of the unit you are diving with OC or CCR mode refer to the Unit menu section the gases that you plan to take with you on the dive refer to the Gases menu section as well as your decompression schedule refer to the Runtime menu section You can also configure various alarms depth alarm time alarm and ascent descent rate alarms refer to the Alarms menu section Finally you can configure minimum and maximum gas parameters last decompression stops Gf you would like different last stops than the standard 3m 6m 9m 10ft 20ft 30ft and algorithm conservatism parameters called Gradient Factors refer to the Deco Settings menu section Never attempt to plan or undergo a decompression dive without proper training Do not use the XEO ascent schedule as a definite source of decompression information The Dive Planning feature is provided ONLY as a way to predict the XEO s ascent schedule computed during dive assuming you follow the dive plan perfectly Both the XEO Dive Planning and In Water Decompression Calculations likely still have bugs We have looked for them and tried to eliminate them but they can still appear during use Bugs can cause the unit 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 sof
90. your dives For each of these gases you can specify the following oxygen content helium content as well as a Mode The Mode setting defines how you plan to use this gas during the dive Available modes are Dive Deco Backup Off Setting a gas to Off means that you do not plan to use this gas at all during your current dive but it gives you the option to easily turn it On in the future The other gas modes are described below together with few other labels XEO uses with respect to gases Best Gas your XEO uses a Best Gas concept to determine the gas you ought to be breathing at a specific depth both during Dive Planning and during Auto Switching while diving To determine the Best Gas your XEO first reviews all the Dive and Deco gases you have set up for this dive with the exception of any Lost gases Then it chooses a subset of gases that are breathable at this depth based on your min max PO2 END settings Finally it chooses one that has the highest content of oxygen among those gases that is your Best Gas Default Gas the gas you set as Default is the gas your XEO will assume you are breathing the moment you begin the dive You can later switch to other gases during your dive Default Gas Rules Only one gas can be configured as the Default Gas There always has to be a Default Gas The Default Gas will always be a

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