Suunto 23821 Dive computer User Manual Suunto EON Core

Suunto Oy Dive computer Suunto EON Core

Contents

User guide

SUUNTO EON CORE USER GUIDE2017-06-12
1. Safety................................................................................................................................................................42. Getting started...............................................................................................................................................72.1. Display states and views................................................................................................................. 72.2. Icons.....................................................................................................................................................72.3. Set up.................................................................................................................................................. 83. Features..........................................................................................................................................................93.1. Alarms, warnings and notifications...............................................................................................93.2. Ascent rate....................................................................................................................................... 103.3. Algorithm lock...................................................................................................................................113.4. Battery.................................................................................................................................................113.5. Bookmark..........................................................................................................................................123.6. Calendar clock.................................................................................................................................123.7. Compass............................................................................................................................................133.7.1. Calibrating compass............................................................................................................133.7.2. Setting declination.............................................................................................................. 133.7.3. Setting bearing lock............................................................................................................143.8. Customization..................................................................................................................................143.9. Decompression dives....................................................................................................................163.10. Display brightness.........................................................................................................................183.11. Dive history...................................................................................................................................... 183.12. Dive modes.....................................................................................................................................193.13. Dive planner....................................................................................................................................193.14. Flip display.....................................................................................................................................203.15. Gas consumption......................................................................................................................... 203.16. Gas time...........................................................................................................................................213.17. Gas mixtures....................................................................................................................................213.18. Language and unit system.........................................................................................................223.19. Logbook..........................................................................................................................................223.20. Multi-gas diving............................................................................................................................233.21. Movescount mobile app.............................................................................................................233.22. Personal and altitude adjustments.........................................................................................243.23. Oxygen calculations...................................................................................................................253.24. Rebreather diving........................................................................................................................253.24.1. Closed-circuit gases........................................................................................................253.24.2. Open-circuit gases..........................................................................................................263.24.3. Setpoints........................................................................................................................... 263.24.4. Bailouts...............................................................................................................................273.25. Safety stops and deepstops.................................................................................................... 283.26. Sample rate...................................................................................................................................283.27. Standby and deep sleep............................................................................................................28Suunto EON Core2
3.28. Surface and no-fly time..............................................................................................................293.29. Suunto DM5 and Movescount.................................................................................................293.30. Suunto Fused RGBM..................................................................................................................293.31. Tank pressure................................................................................................................................303.32. Timer................................................................................................................................................313.33. Water contacts..............................................................................................................................324. Care and support....................................................................................................................................... 334.1. Handling guidelines....................................................................................................................... 334.2. Water resistance.............................................................................................................................334.3. Installing scratch guard................................................................................................................ 334.4. Charging battery............................................................................................................................ 344.5. Changing strap to bungee.......................................................................................................... 344.6. Getting support.............................................................................................................................. 355. Reference.....................................................................................................................................................365.1. Technical specifications................................................................................................................ 365.2. Compliance..................................................................................................................................... 385.2.1. CE........................................................................................................................................... 385.2.2. EN 13319...............................................................................................................................385.2.3. EN 250 and FIOH..............................................................................................................385.2.4. FCC compliance.................................................................................................................385.2.5. ISED............................................................................................................................................395.5. International Limited Warranty................................................................................................... 395.6. Copyright......................................................................................................................................... 405.7. Dive terms......................................................................................................................................... 41Suunto EON Core3
1. SafetyTypes of safety precautions WARNING: - is used in connection with a procedure or situation that may result inserious injury or death. CAUTION: - is used in connection with a procedure or situation that will result indamage to the product. NOTE: - is used to emphasize important information. TIP: - is used for extra tips on how to utilize the features and functions of the device.Before you diveMake sure that you fully understand the use, displays and limitations of your dive instruments.If you have any questions about this manual or the dive computer, contact your Suunto dealerbefore diving with the dive computer. Always remember that YOU ARE RESPONSIBLE FORYOUR OWN SAFETY!Safety precautions WARNING: ONLY TRAINED DIVERS SHOULD USE A DIVE COMPUTER! Insucienttraining for any kind of diving, including freediving, may cause a diver to commit errors, suchas incorrect use of gas mixtures or improper decompression, that may lead to serious injuryor death. WARNING: You must read the printed quick guide and online user guide for your divecomputer. Failure to do so may lead to improper use, serious injury or death. WARNING: THERE IS ALWAYS A RISK OF DECOMPRESSION SICKNESS (DCS) FOR ANYDIVE PROFILE EVEN IF YOU FOLLOW THE DIVE PLAN PRESCRIBED BY DIVE TABLES OR ADIVE COMPUTER. NO PROCEDURE, DIVE COMPUTER OR DIVE TABLE WILL PREVENT THEPOSSIBILITY OF DCS OR OXYGEN TOXICITY! An individual’s physiological make up can varyfrom day to day. The dive computer cannot account for these variations. You are stronglyadvised to remain well within the exposure limits provided by the instrument to minimize therisk of DCS. As an added measure of safety, you should consult a physician regarding yourfitness before diving. WARNING: If you have a pacemaker, we recommend you do not scuba dive. Scubadiving creates physical stresses on the body which may not be suitable for pacemakers. WARNING: If you have a pacemaker, consult a doctor before using this device. Theinductive frequency used by the device may interfere with pacemakers.Suunto EON Core4
WARNING: Allergic reactions or skin irritations may occur when product is in contact withskin, even though our products comply with industry standards. In such event, stop useimmediately and consult a doctor. WARNING: Not for professional use! Suunto dive computers are intended for recreationaluse only. The demands of commercial or professional diving may expose the diver to depthsand conditions that tend to increase the risk of decompression sickness (DCS). Therefore,Suunto strongly recommends that the device not be used for any commercial or professionaldiving activities. WARNING: USE BACKUP INSTRUMENTS! Ensure that you use backup instrumentation,including a depth gauge, submersible pressure gauge, timer or watch, and have access todecompression tables whenever diving with a dive computer. WARNING: For safety reasons, you should never dive alone. Dive with a designatedbuddy. You should also stay with others for an extended time after a dive as the onset ofpossible DCS may be delayed or triggered by surface activities. WARNING: PERFORM PRE-CHECKS! Always check that your dive computer is functioningproperly and has the correct settings before diving. Check that the display is working, thebattery level is OK, tank pressure is correct, and so forth. WARNING: Check your dive computer regularly during a dive. If there is any apparentmalfunction, abort the dive immediately and safely return to the surface. WARNING: THE DIVE COMPUTER SHOULD NEVER BE TRADED OR SHARED BETWEENUSERS WHILE IT IS IN OPERATION! Its information will not apply to someone who has notbeen wearing it throughout a dive, or sequence of repetitive dives. Its dive profiles mustmatch that of the user. If it is left on the surface during any dive, the dive computer will giveinaccurate information for subsequent dives. No dive computer can take into account divesmade without the computer. Thus, any diving activity up to four days prior to initial use of thecomputer may cause misleading information and must be avoided. WARNING: DO NOT EXPOSE ANY PART OF YOUR DIVE COMPUTER TO ANY GAS MIXCONTAINING MORE THAN 40% OXYGEN! Enriched air with greater oxygen content presentsa risk of fire or explosion and serious injury or death. WARNING: DO NOT DIVE WITH A GAS IF YOU HAVE NOT PERSONALLY VERIFIED ITSCONTENTS AND ENTERED THE ANALYZED VALUE INTO YOUR DIVE COMPUTER! Failure toverify tank contents and enter the appropriate gas values where applicable into your divecomputer will result in incorrect dive planning information. WARNING: Using a dive planner software such as in Suunto DM5 is not a substitute forproper dive training. Diving with mixed gases has dangers that are not familiar to diversdiving with air. To dive with Trimix, Triox, Heliox and Nitrox or all of them, divers must havespecialized training for the type of diving they are doing.Suunto EON Core5
WARNING: Do not use Suunto USB Cable in areas where flammable gases are present.Doing so may cause an explosion. WARNING: Do not disassemble or remodel Suunto USB Cable in any way. Doing so maycause an electric shock or fire. WARNING: Do not use Suunto USB cable if cable or parts are damaged. CAUTION: DO NOT allow the connector pins of the USB cable to touch any conductivesurface. This may short circuit the cable, making it unusable.Emergency ascentsIn the unlikely event that the dive computer malfunctions during a dive, follow the emergencyprocedures provided by your certified dive training agency to immediately and safely ascend.Suunto EON Core6
2. Getting started2.1. Display states and viewsSuunto EON Core has two main views in surface and dive states: time/no deco and compass.Change the view by pressing the middle button. NOTE: Main views can be customized. See Customization.Suunto EON Core automatically switches between surface and dive state. If you are morethan 1.2 m (4 ft) below the water level, the dive state is activated.The following display shows Suunto EON Core when tank pressure screen is in use:•Present depth is 19.0 m•Active gas is Nitrox 32%•Dive time is 22 minutes•Tank pressure left is 120 bar•No decompression time is 50 minutes•Safety stop is ahead at 3.0 meters•21 hours of diving time left before need to recharge2.2. IconsSuunto EON Core uses the following icons:No-fly timeSurface (interval) timeBattery status (for device: charging, ok, low; for Tank POD: ok, low)Battery level - number indicates remaining diving time before need torechargeTank / gas pressure informationSuunto EON Core7
Tank POD alert (device is not receiving signal from Tank POD)2.3. Set upTo get the most out of your Suunto EON Core, use some time to customize features anddisplays. Make absolutely sure that you know your computer and have it set up as you wantbefore getting into the water.To get started1. Wake up the device by connecting the USB cable to PC/Mac (or USB power source ifavailable).2. Follow the startup wizard to set up the device. When ready, the device goes to surfacestate.3. Fully charge before first dive.The startup wizard guides you through:•Language•Units•Time format (12h/24h)•Date format (dd.mm / mm.dd)•Connecting with DM5 (optional)Suunto EON Core8
3. Features3.1. Alarms, warnings and notificationsSuunto EON Core has color-coded alarms, warnings and notifications. They are shownprominently on the display with an audible alarm (if tones are on). Alarms are always red.Warnings may be red or yellow. Notifications are always yellow.When an alarm, warning, or notification occurs, a message is displayed as a pop-up. Pop-upmessages can be acknowledged by pressing any button. The information needing attentionremains on screen or as a scrollable element in the bottom field until the situation is back tonormal.Alarms are critical events that always require immediate action. When an alarm situationcomes back to normal, the alarm will stop automatically.Alarm ExplanationAscent speed exceeds safe speed of 10 m (33 ft) perminute for five seconds or more.Decompression ceiling broken by more than 0.6 m (2 ft)on a decompression dive. Immediately descend backbelow ceiling depth and continue to ascend normally.Partial pressure of oxygen exceeds safe level (>1.6).Immediately ascend or change to a gas with loweroxygen percentage.Partial pressure of oxygen below safe level (<0.18).Immediately descend or change to a gas with higheroxygen percentage.Warnings alert you to events that can impact your health and safety if you do not take action.Acknowledge the warning by pressing any button.Warning ExplanationCNS100% Central nervous system toxicity level at 100% limitOTU300 Recommended daily limit for Oxygen tolerance unitreachedDepth Depth exceeds your depth alarm limitSuunto EON Core9
Warning ExplanationDive time Dive time exceeds your dive time alarm limitDiluent high PO2 Diluent partial pressure of oxygen exceeds safe level(>1.6); no immediate danger unless diluent is used, e.g.for bailoutDiluent low PO2 Diluent partial pressure of oxygen below safe level(<0.18); no immediate danger unless diluent is used,e.g.for bailoutGas time Gas time exceeds your gas time alarm limit, or tankpressure is below 35 bar (~510psi), in which case gastime is zeroSafety stop broken Safety stop ceiling broken by more than 0.6 m (2 ft)Tank pressure Tank pressure is below your tank pressure alarm limitNotifications indicate events that require preventive actions. Acknowledge the notification bypressing any button.Notification ExplanationCNS80% Central nervous system toxicity level at 80% limitOTU250 Approximately 80% of recommended daily limit for OTUreachedChange gas On multi-gas dive when ascending, it is safe to switch tonext available gas for optimum decompression profileLow battery Approximately three hours of dive time leftRe-charge needed Approximately two hours of battery time left; re-chargingrequired before next diveSetpoint switched Setpoint switched automatically on rebreather dive. See3.24.3. SetpointsTank POD low battery Tank POD battery life low; battery change required3.2. Ascent rateDuring a dive, the bar on the left indicates ascent rate. One bar step corresponds to 2 m (6.6ft) per minute.The bar is also color coded:•Green indicates ascent rate is ok, less than 8 m (26.2 ft) per minute•Yellow indicates ascent rate is moderately high, 8-10 m (26-33 ft) per minute•Red indicates ascent rate is too high, over 10 m (33 ft) per minuteSuunto EON Core10
When maximum allowed ascent rate is exceeded for five seconds, an alarm is generated.Ascent rate violations result in longer safety stop times. WARNING: DO NOT EXCEED THE MAXIMUM ASCENT RATE! Rapid ascents increase therisk of injury. You should always make the mandatory and recommended safety stops afteryou have exceeded the maximum recommended ascent rate. If this mandatory safety stop isnot completed the decompression model will penalize your next dive(s).3.3. Algorithm lockSuunto Fused™ RGBM algorithm is locked for 48 hours if you omit decompression stops forlonger than three (3) minutes. When the algorithm is locked, no algorithm information isavailable and LOCKED is shown instead. Locking the algorithm is a safety feature, highlightingthat the algorithm information is no longer valid.When you ascend above the decompression ceiling by more than 0.6 m (2 ft), the ceilingparameter turns red with an arrow pointing down appears, and an audio alarm is generated.In such a condition, you should descend back below the ceiling level to continue thedecompression. If you fail to do so within three (3) minutes, Suunto EON Core locks thealgorithm calculation and displays LOCKED instead, as shown below. Note that the ceilingvalue is no longer present.In this state, you significantly increase your risk of decompression sickness (DCS).Decompression information is not available for the next 48 hours after surfacing.It is possible to dive with the device when the algorithm is locked, but instead of thedecompression information, LOCKED is shown. Going to dive mode when algorithm is lockedresets the algorithm lock time back to 48 hours when you surface.3.4. BatterySuunto EON Core has a rechargeable lithium-ion battery. Charge the battery by connectingSuunto EON Core to a power source with the included USB cable. As a power source useeither your computer USB port or wall charger.The battery icon in the upper-left corner of the display shows the battery status. To the right ofthe battery icon is the estimated remaining dive time in hours.Suunto EON Core11
Icon ExplanationEstimated remaining dive time is 27 hours; no immediate need to rechargeEstimated remaining dive time is three (3) hours or less; recharge neededEstimated remaining dive time is less than one (1) hour; rechargeimmediatelyBattery is charging, showing current charge level as remaining dive timeWhen the charge level drops below 2 (two) hours, you cannot start a dive with Suunto EONCore. A pop-up message indicates recharge is needed.3.5. BookmarkKeep the lower button pressed to add a bookmark (timestamp) to the active log for laterreference.If you save a bookmark while the compass view is active, the bookmark includes both atimestamp and the current compass heading.3.6. Calendar clockTime and date settings are found under General / Device settings / Time & date.Time and date formats are found under General / Device settings / Units and formats.To change time and date1. Keep the middle button pressed to enter menu.2. Browse to General / Device settings / Time & date.3. Scroll to Set time or Set date with the upper or lower button.4. Press the middle button to enter the setting.5. Adjust the setting with the upper or lower button.6. Press the middle button to move to the next setting.7. Press again the middle button when last value is set to save and go back to Time & datemenu.8. Keep middle button pressed to exit when done.To change time and date formats1. Keep the middle button pressed to enter menu.Suunto EON Core12
2. Browse to General / Device settings / Units and formats.3. Scroll to Time format or Date format with the upper or lower button.4. Follow steps 5-8 as above to change and save formats.3.7. CompassSuunto EON Core includes a tilt-compensated digital compass, available as a main view.3.7.1. Calibrating compassWhen you first start using Suunto EON Core, the compass needs to be calibrated. SuuntoEON Core displays the calibration icon when you enter the compass view. Calibrate thecompass by slowly rotating the unit in your hand in large figure-8 loops.Watch the video on YouTube.During the calibration process, the compass adjusts itself to the surrounding magnetic field.Because of changes in the surrounding magnetic field, it is recommended to re-calibrate thecompass before each dive.To manually start calibration:1. Keep the middle button pressed to enter the menu.2. Browse to General / Compass.3. Press the middle button to enter Compass.4. Scroll up or down to select Calibrate.5. Start calibration by moving the device around in a 3D figure-8 as the image suggests.6. A sound indicates the calibration succeeded, and the screen goes back to Compassmenu. NOTE: If the calibration fails several times in a row, you may be in an area with strongsources of magnetism, such as large metal objects. Move to another location and try tocalibrate the compass again.3.7.2. Setting declinationYou should always adjust your compass declination for the area where you are diving to getaccurate heading readings. Check the local declination from a trusted source and set thevalue in Suunto EON Core.To manually start calibration:1. Keep the middle button pressed to enter the menu.2. Browse to General / Compass.Suunto EON Core13
3. Press the middle button to enter Compass.4. Press the middle button again to enter Declination.5. Scroll up/down to set the angle of declination: Starting from 0.0º scroll up towards East ordown towards West declination. To turn declination o, set declination angle to 0.0º.6. Press middle button to save changes and go back to the Compass menu.7. Keep the middle button pressed to exit.3.7.3. Setting bearing lockA bearing is the angle between north and your target. In simple terms, it is the direction youwant to travel. Your heading, on the other hand, is your actual direction of travel.You can set a bearing lock to help you orientate yourself underwater and ensure you maintainyour direction of travel. For example, you can set a bearing lock for the direction to the reefbefore leaving the boat.You can reset the bearing lock at any time, but you can only clear a bearing lock while at thesurface.To set a bearing lock:1. Press the middle button to change to the compass view.2. Hold your Suunto EON Core in level in front of you, with the top pointing in the direction toyour target.3. Keep the lower button pressed until you see the Bearing locked notification.Once you have a bearing locked, the lock position is indicated on the compass rose, asshown below.Below your heading (large number in center of compass), you also see the relative dierencebetween your bearing and your heading. So, for instance, when you want to travel in theexact direction of your bearing, the lower number should be 0°.If you want to set a new bearing lock, just repeat the same procedure above. Each bearinglock is recorded in your dive log with a time stamp.To clear the bearing lock from your compass view, you need to return to the surface.To clear a bearing lock:1. While in surface state, keep the middle button pressed to enter the main menu.2. Scroll to GENERAL with the upper or lower buttons and press the middle button.3. Press the middle button to enter Compass.4. Select Clear bearing with the middle button.5. Keep the middle button pressed to exit.3.8. CustomizationYou can customize Suunto EON Core views and features with Suunto DM5. Create up to 10dierent dive modes with up to four custom views each.Suunto EON Core14
Watch the video on YouTube.To customize Suunto EON Core:1. Download and install Suunto DM5 from http://www.suunto.com/DM5.2. Connect your Suunto EON Coreto the computer with the USB cable.3. In the devices window, select Suunto EON Core.4. Select the Customization tab. You can create new dive modes and modify existing ones. NOTE: When creating or modifying dive modes, you need to synchronize the changeswith your Suunto EON Core before disconnecting the USB cable to save the changes to yourdevice.Customization is divided into four categories:•Dive mode name•Dive algorithm•Gas settings•Customize viewsDive mode (name)Maximum length of the name is 15 characters. Use something short and simple that helps youidentify easily the features and information that you have customized on this mode.Dive algorithmYou can select to use Suunto Fused™ RGBM or no algorithm (see 3.30. Suunto Fused RGBM).If you select no algorithm, Suunto EON Core functions as a gauge (bottom timer) in that mode.If you select Suunto Fused RGBM, you have two additional options: personal setting(algorithm conservatism) and altitude setting.Gas settingsHere you configure what you see under the Gas(es) menu in Suunto EON Core. The multiplegases option can be turned on or o. Turn it on to be able to dive with multiple gases. Whenturned o, the gas menu is simplified and easier to use with only one gas.Helium can also be turned on or o. If you turn this o, you cannot see the helium componentfor any gases.The gas max pO2 setting can be set to manual or fixed. The fixed option means that theselected value is used for all gases and the option to manually edit them in the Gas(es) menuis disabled. When manual is selected, you can edit the gas max pO2 for each gas individuallyin the Gas(es) menu.Customize viewsFor each dive mode, you can create up to four custom views. For each view, there are twoareas of view customization: style and content.The style of the mode can be graphical or classic. Graphical style presents information withadditional visual elements:Suunto EON Core15
With classic, information is presented in the traditional manner using numbers:Within each view of the mode, you can define what information is shown in customizablefields. When editing the view in DM5, you get a preview of how it will look on your SuuntoEON Core.In each view, you can define multiple custom field pairs for the values shown in the lower leftand right corners. When you use the view in Suunto EON Core, you can cycle through thesefield pairs by pushing the lower button.3.9. Decompression divesIf you exceed the no-decompression limit on a dive, Suunto EON Core provides thedecompression information required for ascent. Ascent information is always presented withtwo values:•ceiling: depth that you should not go above•asc. time: optimum ascent time in minutes to surface with given gases WARNING: NEVER ASCEND ABOVE THE CEILING! You must not ascend above theceiling during your decompression. In order to avoid doing so by accident, you should staysomewhat below the ceiling.On a decompression dive, there could be three kinds of stops:•Safety stop•Deep stop•Decompression stopYou can turn deep stops on or o under Dive settings / Parameters. In addition, you canadjust the safety stop time to be 3, 4 or 5 minutes.The illustration below presents how decompression is displayed on Suunto EON Core. Whenyou ascend close to the ceiling depth and enter the deco window area, two arrows appear infront of the ceiling number.Suunto EON Core16
The deco window area is ceiling depth + 3.0 meters (9 ft). This is the area wheredecompression takes place.The closer to the ceiling you stay, the more optimal thedecompression time is.If you ascend above the ceiling depth, there is still a safe margin area, equal to ceiling depth– 0.6 meters (2 ft). In this safe margin area, decompression calculation still continues, but youare advised to go down below ceiling depth. This is indicated by the ceiling depth numberturning yellow with a downward pointing arrow in front of it.If go above the safe margin area, the decompression calculation is paused until you go backdown below this limit. An audible alarm and a downward arrow in front of a red ceilingnumber indicate unsafe decompression.If you ignore the alarm and stay above the safe margin for three minutes, Suunto EON Corelocks the algorithm calculation, and decompression information will not be available anymoreon the dive. See 3.3. Algorithm lock.Below is a typical decompression dive view showing ascent time and the first required deepstop at 20.3 meters:Suunto EON Core shows the ceiling value always from the deepest of these stops. deep stopand safety stop ceilings are always at constant depth when you are at the stop. Stop time iscounted down in minutes and seconds.Below is an example of what Suunto EON Core displays during deep stop:Below is an example of what Suunto EON Core displays during safety stop:Suunto EON Core17
With decompression stops, the ceiling is always decreasing while you are near the ceilingdepth, providing continuous decompression with optimum ascent time.Below is an example of what Suunto EON Core looks like on decompression stop: NOTE: It is always recommended to keep close to the decompression ceiling whenascending.Ascent time is always the minimum time needed to reach the surface. It includes:•Time required for deep stops•Ascent time from depth at 10 m (33 ft) per minute•Time needed for decompression WARNING: YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DISPLAYED BY THEDIVE COMPUTER! The ascent time will increase if you: (1) remain at depth, (2) ascend slowerthan 10 m/min (33 ft/ min), (3) make your decompression stop deeper than at the ceiling,and/or (4) forget to change the used gas mixture. These factors might also increase theamount of breathing gas required to reach the surface.3.10. Display brightnessThe brightness of the display can be adjusted under General / Device settings / Brightness.The default value is 50%. Adjusting this value has direct impact on battery life. TIP: You can significantly extend battery life by turning down the display brightness.3.11. Dive historyDive history is a summary of all the dives done with your Suunto EON Core. The history isdivided by the type of dive: Air, Nitrox, Trimix, Gauge, CCR Air/Nitrox and CCR Trimix. CCRdives are categorized by the diluent content used on the dive.The history is divided by the type of dive: Air, Nitrox, Trimix and Gauge dives are loggedseparately. Each type summary includes the number of dives, cumulative dive hours andmaximum depth.Suunto EON Core18
NOTE: If there is more history information available than can be shown in a singlescreen, you can scroll through the additional information with the upper and lower buttons.3.12. Dive modesBy default Suunto EON Core has four dierent dive modes: Air/Nitrox, Trimix, CCR, and Gauge(bottom timer). Select the appropriate mode for your dive under Dive settings / Mode. NOTE: Air/Nitrox dive mode is a single gas mode. The Gas(es) menu under this modewill not allow you to add more than one gas. However, this can be changed throughcustomization. See Customization. NOTE: Air/Nitrox mode is by default in graphical style and all the others in classicalvisual style. You can change this and other settings, as well as create additional dive modesusing Suunto DM5. See Customization.Air/Nitrox, Trimix and CCR modes are intended for diving with decompression information, likeno decompression stop time or decompression ceiling/ascent time.By default the decompression algorithm used in Suunto EON Core is Suunto Fused™ RGBM.For more information about the algorithm, see 3.30. Suunto Fused RGBM.Gauge is a bottom timer mode and thus has no decompression information or calculationincluded. NOTE: After diving in gauge mode, decompression calculation is locked for 48 hours. Ifduring this time you dive with Air/Nitrox, Trimix or CCR mode, there is no decompressioncalculation available and ERROR is shown in decompression information fields.3.13. Dive plannerThe dive planner in Suunto EON Core helps you to quickly plan your next dive. The plannerdisplays available no decompression time and gas times for your dive based on depth andgas mixture.The dive planner can also help you plan dives in series, taking into account the residualnitrogen from your previous dive(s) based on the planned surface time you enter.Before planning your first dive, make sure you have gone through the planner settings andconfigured them according to your personal preference. You can view the planner and adjustsettings under the Dive planner menu.These settings include tank size and pressure at the start of the dive as well as personal gasconsumption (surface gas consumption). If you are not sure what your personal gasconsumption is, we recommend using the default value of 25 L/min (0.90 cubic ft/min). NOTE: Estimated gas time is calculated based on tank pressure at start minus 35 bar(510 psi).The calculated no decompression time is based on dive depth and gas mixture. Any residualnitrogen from previous dives, as well as surface time, is taken into consideration. GAS TIME isdependent on the dive depth, personal consumption and tank size/pressure.In the dive planner display, you can edit depth and mixture.Suunto EON Core19
For example, for the first dive in a series, if you enter 18 meters and use a mixture of 21%oxygen, you see the following:In this example, the calculated values are:•Dive number in the dive series: 1•Available no decompression time: 51 minutes•Remaining gas time: 41 minutesWhen planning additional dives in series, the dive planner allows you to adjust surface time. Inthe example below, the surface time before the second dive is 1:37 minutes. Adjust surfacetime to see how it impacts no decompression time.3.14. Flip displayYou can flip the display of Suunto EON Core to have the buttons on either the left or right sideof the dive computer, making it easier to wear on either arm.Change the button orientation under General / Device settings / Flip display. Select Buttonsright to have the buttons on the right-hand side or Buttons left to have them on the left-handside.3.15. Gas consumptionGas consumption refers to your real-time consumption rate of gas during a dive. In otherwords, it is the amount of gas a diver would use in one minute on the surface. This iscommonly known as your surface air consumption or SAC rate.Gas consumption rate is measured in liters per minute (cubic feet per minute). This is anoptional field and needs to be added to your custom dive mode views in DM5. In the classicview below, gas consumption rate is in the lower right-hand corner.To enable gas consumption1. Add the gas consumption filed to your custom dive mode in DM5. See Customization.2. Install and pair a Suunto Tank POD. See 3.31. Tank pressure.3. After you have selected the correct gas and returned to the main time view, keep themiddle button pressed to enter menu.4. Scroll to Gases with the lower button and select with the middle button.Suunto EON Core20
5. Scroll to the gas you just selected from your Tank POD and select with the middle button.6. Scroll to Tank size and select with the middle button.7. Check the tank size and change the size with the upper or lower button as needed.Confirm change with the middle button.8. Keep the middle button pressed to exit the menu. NOTE: For accurate gas consumption, you must define the tank size. Not defining thetank size leads to incorrect gas consumption readings.3.16. Gas timeGas time refers to remaining air (gas) left with current gas mixture, measured in minutes. Thetime is based on tank pressure value and your current breathing rate.Gas time is also highly dependent on your current depth. For example, all other factors beingthe same, including breathing rate, tank pressure and tank size, depth aects gas time asfollows:•At 10 m (33 ft, surrounding pressure 2 bar), gas time is 40 minutes.•At 30 m (99 ft, surrounding pressure 4 bar), gas time is 20 minutes.•At 70 m (230ft, surrounding pressure 8 bar), gas time is 10 minutes.Gas time is a default field in the lower right-hand corner of default dive modes. If you have notpaired a Suunto Tank POD, the gas time field shows n/a. If you have paired a POD but there isno data being received, the field shows –. This may be because the POD is not in range, thetank is closed, or the POD battery is low.3.17. Gas mixturesIf Nitrox or Trimix dive mode is selected, you need to define the gas(es) for thedecompression algorithm to work properly. You define the gases under Gas(es). In Nitroxmode, gas will have only oxygen (O2%). Trimix mode has helium (He%) available, and there isalso the possibility to choose multiple gases. NOTE: When you have analyzed your gas, you should round the result down whenentering it for EON Steel. For example, if the analyzed gas is 31.8% oxygen, then define thegas as 31%. This makes the decompression calculations safer. Oxygen calculations (pO2,OTU, CNS%) are also kept conservative, since the oxygen percent used for those are O2% + 1. WARNING: THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PERCENTAGEVALUES OF OXYGEN CONCENTRATION. DO NOT ROUND UP FRACTIONAL PERCENTAGES!Rounding up will cause nitrogen percentages to be understated and will aectdecompression calculations. NOTE: You can customize what you see in the Gas(es) menu. See Customization.Suunto EON Core21
It is important to understand how the Gas(es) menu works on Trimix mode, where you canmake use of multiple gases. In the example below, the menu has three gases and tx18/45 isselected as the active gas. Even though only one gas is active, the decompression algorithmcalculates ascent time (during dive) using all these three gases.To select another active gas:1. While in the Gas(es) menu, press the middle button to see gas options.2. Scroll with upper or lower buttons to highlight Select.3. Press the middle button again to confirm.If you are diving with only one gas, ensure you have only that one gas in the Gas(es) menu.Otherwise, Suunto EON Core expects you to use all gases in the list and notifies you tochange gases during the dive. NOTE: When you select CCR mode, gas mixtures are divided to open-circuit and closed-circuit gases. See Rebreather diving.3.18. Language and unit systemYou can change the device language and unit system from the settings under General »Device settings.You can change these settings at any time. Suunto EON Core refreshes immediately to reflectthe changes.Under the unit settings, you have the option of selecting metric or Imperial as a global setting,meaning the aect all measurements. Alternative, you can choose Advanced which allowsyou to set the unit system for specific measurements. For example, you could use metric fordepth, and Imperial for tank pressure.3.19. LogbookDive logs can be found under Logs. By default, they are listed by date and time, and eachentry listing shows the max. depth and dive time of the log.Dive log details and profile can be browsed by scrolling through the log with upper or lowerbutton and selecting it with the middle button.Each dive log contains data samples with fixed 10-second intervals. The dive profile includes acursor for browsing the logged data, scrollable with upper and lower buttons. For moredetailed log analyses, upload the dive(s) to Suunto DM5 (see 3.29. Suunto DM5 andMovescount).Suunto EON Core22
When the logbook memory gets full, the oldest dives are deleted to make space for newones. NOTE: If you surface and then dive again within five minutes, Suunto EON Core countsthis as one dive.3.20. Multi-gas divingSuunto EON Core allows gas changes during a dive between the gases defined in theGas(es) menu. When ascending, you are always notified to change gases when a better gasis available.For example, you may have the following gases when diving to 55 m (180.5 ft):•tx18/45, MOD 58m•tx50/10, MOD 21m•oxygen, MOD 6mWhile ascending, you are notified to change gas at 21 m (70 ft) and 6 m (19.7 ft) according tothe maximum operating depth (MOD) of the gas.A pop-up notifies you when to change gases, as shown below: WARNING: When diving with multiple gases, remember that the ascent time is alwayscalculated with the assumption that you use all the gases found in the Gas(es) menu. Alwayscheck that you have only the gases for your current planned dive defined before you dive.Remove the gases that are not available for the dive.3.21. Movescount mobile appWith the Suunto Movescount App, you can easily transfer your dive logs to Movescountwhere you can follow and share your diving adventures.To pair with Suunto Movescount App on iOS:1. Download and install Suunto Movescount App on your compatible Apple device from theiTunes App Store. The app description includes the latest compatibility information.2. Start Suunto Movescount App and turn on Bluetooth if it is not on already. Leave the apprunning in the foreground.3. If you have not yet set up your Suunto EON Core, do so now (see Getting started).4. Tap the settings icon in the upper right and tap on the ' + ' icon to add a new device.5. Tap on your dive computer from the list of found devices and enter the passkey shown onthe Suunto EON Core display.Suunto EON Core23
To pair with Suunto Movescount App on Android:1. Download and install Suunto Movescount App on your compatible Android device fromGoogle Play. The app description includes the latest compatibility information.2. Start Suunto Movescount App and turn on Bluetooth if it is not on already. Leave the apprunning in the foreground.3. If you have not yet set up your Suunto EON Core, do so now (see Getting started).4. A pop-up screen opens on your Android device. Select [Pair] .5. Enter the passkey shown on your dive computer display into the paring request field onyour mobile device and tap [OK] .3.22. Personal and altitude adjustmentsThere are several factors that can aect your susceptibility to DCS. Such factors vary betweendivers, as well as from one day to another.The personal factors which tend to increase the possibility of DCS include:•exposure to low temperature – water temperature less than 20 °C (68 °F)•below average physical fitness level•fatigue•dehydration•stress•obesity•patent foramen ovale (PFO)•exercise before or after dive WARNING: SET THE CORRECT PERSONAL SETTING! Whenever it is believed that factorsthat tend to increase the possibility of DCS exist, it is recommended that you use this optionto make the calculations more conservative. Failure to select the correct personal setting willresult in erroneous dive and planning data.The five-step personal setting can be used to adjust the algorithm conservatism to fit yourDCS susceptibility. You can find the setting under Dive settings / Parameters / Personal.Personal level ExplanationMore aggressive (-2) Ideal conditions, excellent physical fitness, highlyexperienced with a lot of dives in the near pastAggressive (-1) Ideal conditions, good physical fitness, well experiencedwith dives in the near pastDefault (0) Ideal conditions (default value)Conservative (+1) Some risk factors or conditions existMore conservative (+2) Several risk factors or conditions exist WARNING: Personal adjustment setting 0, -1 or -2 causes a high risk of DCS, or otherpersonal injury, and death.Suunto EON Core24
In addition to the personal setting, Suunto EON Core can be adjusted for diving at dierentaltitudes. This setting automatically adjusts the decompression calculation according to thegiven altitude range. You can find the setting under Dive settings / Parameters / Altitude andselect from three ranges:•0 – 300 m (0 – 980 ft) (default)•300 – 1500 m (980 – 4900 ft)•1500 – 3000 m (4900 – 9800 ft) WARNING: Traveling to a higher elevation can temporarily cause a change in theequilibrium of dissolved nitrogen in the body. It is recommended that you acclimatize to thenew altitude before diving.3.23. Oxygen calculationsDuring a dive, Suunto EON Core calculates partial pressure of oxygen (pO2), central nervoussystem toxicity (CNS%) and pulmonary oxygen toxicity, tracked by OTU (oxygen toxicity units).The oxygen calculations are based on currently accepted exposure time limit tables andprinciples.By default in Air/Nitrox dive mode, CNS% and OTU values are not displayed until they reach80% of their recommended limits. When either value reaches 80%, EON Steel notifies you andthe value stays in the view. In default Trimix mode, CNS% and OTU values are displayed in thebottom-right corner field as scrollable info. NOTE: You can customize views to always show CNS% and OTU.3.24. Rebreather divingBy default Suunto EON Core has one mode dedicated to rebreather diving, CCR mode. Thismode uses fixed high/low setpoint values which you can modify in the dive computer orthrough DM5.Fixed setpoint calculation enables Suunto EON Core to be used as a backup dive computeron rebreather dives. It does not control or monitor the rebreather unit in any way.When you select CCR mode (see Dive modes), the gases menu is split into two: CC gases(closed-circuit gases) and OC gases (open-circuit gases). NOTE: For rebreather dives, Suunto EON Core should be used as a backup device only.The primary control and monitoring of your gases should be done through the rebreatheritself.3.24.1. Closed-circuit gasesOn a rebreather dive, you need at minimum two closed-circuit gases: one is your pure oxygentank, and the other is a diluent. You can define additional diluents as needed.The correct oxygen and helium percentages of the diluent gas(es) in your diluent cylinder(s)must always be entered into the dive computer (or through DM5) to ensure correct tissue andoxygen calculation. Diluent gas(es) used on a rebreather dive are found under CC gases inthe main menu.Suunto EON Core25
3.24.2. Open-circuit gasesAs with closed-circuit gases, you must alway define the correct oxygen and heliumpercentages of open-circuit gases (bailout gases) to ensure correct tissue and oxygencalculation.Follow the same procedure as the CC gases to define your open-circuit gases under the OCGases settings.After entering values for Mix1, you can create additional mixes,Mix2 to Mix8. Each additionalmix can be primary, secondary, or o. Mix1 is always set as a primary gas.To minimize the risk of error during a dive, it is highly recommended that the mixes are set inthe proper order. This means that as the mix number rises, so does oxygen content. This isthe order they are usually used during the dive. Before a dive, only enable the mixes youactually have available and remember to check the set values to ensure they are correct.The ascent time is calculated based on the assumption that you start the ascent profileimmediately and all the primary gases are changed as soon as their maximum operatingdepth allows it. That is, using the gases that are set as primary, the most optimal ascentschedule for the moment is calculated.To see the most pessimistic ascent schedule, that is, a schedule for the situation when gasesare not changed at all, you can set the gases as secondary and the time it takes to finish thedecompression using the current breathing gas is shown as the ascent time.Showing the most pessimistic ascent schedule during a long dive may result in the ascenttime no longer fitting the reserved field, and the dive watch displays '––'. NOTE: While setting the gases, notice that the calculated maximum operating depth isdisplayed in the upper field. You cannot change to this gas before you have ascended abovethis depth.3.24.3. SetpointsCCR mode has two setpoint values, low and high. Both are configurable:•Low setpoint: 0.4 – 0.9 (default: 0.7)•High setpoint: 1.0 – 1.6 (default: 1.3)Typically you do not need to modify the default setpoint values. However, you can changethem as needed either in DM5 or under the main menu.To change setpoint values in Suunto EON Core:1. While in surface state, keep middle button pressed to enter main menu.2. Scroll to Setpoint with the upper button and select with the middle button.3. Scroll to Low setpoint or High setpoint and select with the middle button.4. Adjust the setpoint value with the lower or upper button and accept with the middlebutton.5. Keep middle button pressed to exit menu.Setpoint switchingSetpoints can be switched automatically according to depth. By default the low setpointswitch depth is 4.5 m (15 ft), and the high setpoint switch depth is 21 m (70 ft).The auto setpoint switching is o by default for the low setpoint and on for the high setpoint.Suunto EON Core26
To change auto setpoint switching in Suunto EON Core:1. While in surface state, keep middle button pressed to enter main menu.2. Scroll to Setpoint with the upper button and select with the middle button.3. Scroll to Switch low or Switch high and select with the middle button.4. Adjust the depth value for the setpoint switch with the lower or upper button and acceptwith the middle button.5. Keep middle button pressed to exit menu.Popup notifications indicate when the setpoint is switched.During a rebreather dive, you can also switch to a custom setpoint at any time.To change to a custom setpoint:1. While diving in CCR mode, keep middle button pressed to enter main menu.2. Scroll to Custom setpoint and select with the middle button.3. Adjust the setpoint value as needed with the lower or upper button and accept with themiddle button.A popup notification confirms the custom setpoint switch.3.24.4. BailoutsIf at any point during a rebreather dive you suspect a malfunction of any sort, you shouldswitch to a bailout gas and abort the dive.To change to a bailout gas:1. Keep the middle button pressed to enter main menu.2. Scroll to OC gases and select with middle button.3. Scroll to the desired bailout gas and select with the middle button.After a bailout gas is selected, the setpoint field is replaced with the pO2 value of the selectedopen-circuit gas.If the malfunction is rectified or the dive situation otherwise normalizes, you can switch backto a diluent using the same procedure as below, but selecting from CC gases.Suunto EON Core27
3.25. Safety stops and deepstopsA three (3) minute safety stop is always recommended for every dive over 10 meters (19.7 ft).The time for a safety stop is calculated when you are between 2.4 and 6 m (7.9 and 19.7 ft).This is presented with up/down arrows in front of the stop depth. The safety stop time isshown in minutes and seconds. The time may exceed three (3) minutes if you ascend too fastduring dive.Deepstops activate when you dive deeper than 20 m (65.6 ft). Deepstops are presented likesafety stops. You are in the deepstop area when the deepstop depth has up/down arrows infront of it and deepstop time is running. NOTE: For safety reasons, you cannot switch o deepstops if helium (trimix gasmixtures) is enabled for the dive mode in use.3.26. Sample rateSuunto EON Core uses a fixed sample rate of 10 seconds for all log recordings.3.27. Standby and deep sleepStandby and deep sleep are two functions that are designed to prolong battery life. Standbyis an adjustable mode that turns o the screen after a set amount of time if Suunto EON Coreis not used.To adjust the standby time:1. Keep the middle button pressed to enter the menu.2. Browse to General / Device settings / Standby.3. Press the middle button to enter Standby.4. Scroll up/down to select the desired standby time in minutes.5. Press the middle button to save changes and return to the Device settings menu.6. Keep the middle button pressed to exit.Deep sleepDeep sleep is a function that prolongs battery life when Suunto EON Core has not been usedfor some time. Deep sleep is activated when two days have passed since:•No buttons have been pressed•Suunto EON Core has been attached to PC/charger•Dive calculation has endedSuunto EON Core28
Suunto EON Core wakes up when it is connected to a PC/charger, when a button is pressed,or when the water contact gets wet.3.28. Surface and no-fly timeAfter a dive, Suunto EON Core displays surface time since the previous dive and a countdowntime for recommended no-fly time. During the no-fly time, flying or traveling to higher altitudeshould be avoided.No-fly time is always at least 12 hours and equals desaturation time when it is more than 12hours. For desaturation times shorter than 70 minutes, no no-fly time is displayed.If decompression is omitted during a dive so that Suunto EON Core enters permanent errormode (see 3.3. Algorithm lock), the no-fly time is always 48 hours. Similarly, if dive is done ingauge mode (bottom timer), the no-fly time is 48 hours. WARNING: YOU ARE ADVISED TO AVOID FLYING ANY TIME THE COMPUTER COUNTSDOWN THE NO-FLY TIME. ALWAYS ACTIVATE THE COMPUTER TO CHECK THE REMAININGNO-FLY TIME PRIOR TO FLYING! Flying or traveling to a higher altitude within the no-fly timecan greatly increase the risk of DCS. Review the recommendations given by Divers AlertNetwork (DAN). There can never be a flying-after-diving rule that is guaranteed to completelyprevent decompression sickness!3.29. Suunto DM5 and MovescountThe Suunto DM5 software program allows you to track and analyze all of your dive logs andplan your future dives. With DM5 you can customize your Suunto EON Core and update thedevice firmware. Download Suunto DM5 from www.suunto.com/dm5. NOTE: Mono framework is required when using DM5 on a Mac.Movescount is an online sports community that integrates with Suunto DM5. ThroughMovescount your can share your dives with others.3.30. Suunto Fused RGBMSuunto's decompression model development originates from the 1980s when Suuntoimplemented Bühlmann's model based on M-values in Suunto SME. Since then research anddevelopment has been ongoing with the help of both external and internal experts.In the late 1990s, Suunto implemented Dr. Bruce Wienke's RGBM (Reduced Gradient BubbleModel) bubble model to work with the earlier M-value based model. The first commercialproducts with the feature were the iconic Suunto Vyper and Suunto Stinger. With theseproducts the improvement of diver safety was significant as they addressed a number ofdiving circumstances outside the range of dissolved-gas-only models by:•Monitoring continuous multiday diving•Computing closely spaced repetitive diving•Reacting to a dive deeper than the previous diveSuunto EON Core29
•Adapting to rapid ascents which produce high microbubble (silent-bubble) build-up•Incorporating consistency with real physical laws for gas kineticsIn Suunto Fused™ RGBM the tissue half-times are derived from Wienke’s FullRGBM wherehuman body is modeled by fifteen dierent tissue groups. FullRGBM can utilize theseadditional tissues and model the on-gassing and o-gassing more accurately. The amounts ofnitrogen and helium on-gassing and o-gassing in the tissues are calculated independentlyfrom each other.The advantage of Suunto Fused RGBM is additional safety through its ability to adapt to awide variety of situations. For recreational divers it may oer slightly longer no- deco times,depending on the chosen personal setting. For open-circuit technical divers it allows use ofgas mixes with helium - on deeper and longer dives helium based gas mixes provide shorterascent times. And finally, for rebreather divers the Suunto Fused RGBM algorithm gives theperfect tool to be used as a non-monitoring, set point dive computer.3.31. Tank pressureYour Suunto EON Core can be used with multiple Suunto Tank PODs for wireless tankpressure transmission.To install and pair a Suunto Tank POD:1. Install the Tank POD and open the valve.2. Wait for green LED on Tank POD to flash.3. If your Suunto EON Core has a blank screen, press any key to activate it.4. Hold your Suunto EON Core close to the Tank POD as shown.5. After a few seconds, a menu pops up on the screen showing the Tank POD serial number,battery status and the tank pressure. From the menu, select the correct gas for that TankPOD.Suunto EON Core30
Air128999459OK180PODbar WARNING: The battery level indication shown when pairing the Tank POD is anapproximation only. The POD battery may deplete faster than the indication suggests. NOTE: We recommend changing the Tank POD battery after completing 200 dives or 2years.Repeat the procedure above for additional Tank PODs and select dierent gases for eachPOD. NOTE: You cannot pair another Tank POD unless you have a second gas defined inSuunto EON Core.Alternatively, you can select which Tank POD to use with each gas by selecting a Tank PODfor the gas in question in the Gas(es) menu. When using this method, ensure the Tank PODhas been activated by ensuring there is tank pressure reading in screen and that it is withinrange. In the menu, the Tank POD is identified by the serial number printed on the Tank POD.In the dive main views, only one tank pressure is shown and corresponds to the active gas.When the gas is changed, the displayed tank pressure is also changed accordingly. WARNING: If there are several divers using Tank PODs, always check before you divethat the POD number of your selected gas corresponds to the serial number on your POD.123456789 CAUTION: Never lift or carry your tank by holding the wireless tank pressure transmitteras this may break the cover and cause flooding of the unit. If your tank falls down with thetransmitter attached to the regulator first stage, ensure that the transmitter has not beendamaged before diving with it. TIP: Remove pressure from the Tank Pod when not diving to save battery life.3.32. TimerSuunto EON Core has a timer that can be used for timing specific actions during surface ordive. The timer is shown in bottom-right corner as scrollable item.Suunto EON Core31
NOTE: The timer can also be customized to be in graphical style as an analog watch inthe center of the display.To use the timer:1. While diving, press upper button to start the timer.2. Press again the upper button to pause the timer.3. Keep the upper button pressed to reset the timer.Timer start and stop actions are saved to the dive log.3.33. Water contactsThe water contact is located on the side of the case near the USB cable port. Whensubmerged, the water contact poles are connected by the conductivity of the water. SuuntoEON Core switches to dive state when water is detected and the depth gauge senses waterpressure at 1.2 m (4 ft).Suunto EON Core32
4. Care and support4.1. Handling guidelinesHandle Suunto EON Core with care. The sensitive internal electronic components may bedamaged if the device is dropped or otherwise mishandled.Do not try to open or repair Suunto EON Core by yourself. If you are experiencing problemswith the device, please contact your nearest authorized Suunto Service Center. WARNING: ENSURE THE WATER RESISTANCE OF THE DEVICE! Moisture inside thedevice and/or battery compartment may seriously damage the unit. Only an authorizedSuunto Service Center should do service activities.Wash and dry the dive computer after use. Rinse very carefully after any salt-water dive.Pay special attention to the pressure sensor area, water contacts, pushers, and USB cableport. If you use the USB cable before washing the dive computer, the cable (device end)should be rinsed as well.After use, rinse it with fresh water, mild soap, and carefully clean the housing with a moist softcloth or chamois. NOTE: Do not leave your Suunto EON Corein a bucket of water (for rinsing). The displaystays on under water and consumes battery life.Use only original Suunto accessories - damage caused by non-original accessories is notcovered by warranty. TIP: Remember to register your Suunto EON Core at www.suunto.com/support to getpersonalized support.4.2. Water resistanceSuunto EON Core is water resistant to 80 meters (262 ft) in compliance with the dive watchstandard ISO 6425. WARNING: Water resistance is not equivalent to maximum operating depth. Themaximum operating depth of this dive computer is 150 meters (592 ft).To maintain water resistance, it is recommended to:•never use the device for other than intended use.•contact an authorized Suunto service center, distributor or retailer for any repairs.•keep the device clean from dirt and sand.•never attempt to open the case yourself.•avoid subjecting the device to rapid air and water temperature changes.•always clean your device with fresh water if subjected to salt water.•never knock or drop the device.4.3. Installing scratch guardUse the provided scratch guard to help protect your Suunto EON Core from scratches.Suunto EON Core33
To install the scratch guard:1. Ensure the display glass is clean and dry.2. Peel back the protective layer from one end of the scratch guard.3. Place exposed adhesive side down squarely on one end of the display.4. Pull back the protective layer from the scratch guard.5. Press out any air bubbles with a soft, straight edge tool.Watch the video on : YouTube.4.4. Charging batteryFully charged, Suunto EON Core provides min. 20 hours of dive time. The expected lifetime ofthe rechargeable lithium-ion battery is 500 cycles.Charge Suunto EON Core with the supplied USB cable. Connect the cable to a USB wallcharger or a computer USB port. If the battery is very low, the display remains dark whilecharging until the battery has reached an adequate charge level. CAUTION: DO NOT use the USB cable when Suunto EON Core is wet. This may causean electrical failure. Ensure the cable connector and connector pin area on the device areboth dry. If you are using a protective boot, remove the boot from the connector pin area toclear any residual water droplets. NOTE: When connected, you may experience a tingling sensation when touching ametallic computer housing and Suunto EON Core. This is caused by a minor electrical currentcreated when the wall plug to the computer is not grounded. CAUTION: DO NOT allow the connector pins of the USB cable to touch any conductivesurface. This may short circuit the cable, making it unusable.The charging AC/DC mains supply shall meet the clause 2.5 of the standard for limited power supply of IEC 60950-1. Rechargeable batteries have a limited number of charge cycles and may eventually need to be replaced. The battery should be replaced only by authorized Suunto Service Centers.4.5. Changing strap to bungeeYou can change between the wrist strap and bungee as needed. The bungee is provided asan option.To install the bungee:1. Remove both strap ends using a TORX T7 (non-IP) screwdriver.2. Attach the bungee adapters.3. Thread the cord through both adapters.4. Securely tie the ends of the bungee cord and cut o excess cord.Suunto EON Core34
4.6. Getting supportTo get additional support, visit www.suunto.com/support. There you will find a comprehensiverange of support materials, including Questions and Answers and instruction videos. You canalso post questions directly to Suunto or email/call Suunto support professionals.There are also many how-to videos on the Suunto YouTube channel at www.youtube.com/user/MovesCountbySuunto.We recommend registering your product at www.suunto.com/support/ to get the bestpersonalized support from Suunto.To get support from Suunto:1. First visit Suunto.com (www.suunto.com/support) to see if you question has been asked/answered already.2. If you cannot find an answer to your question online, submit a question using the formavailable at suunto.com/support.3. Call Suunto. See the latest list of numbers on the last page of this guide or atwww.suunto.com/support. Suunto’s qualified customer support sta will help you and, ifneeded, troubleshoot your product during the call.Suunto EON Core35
5. Reference5.1. Technical specificationsDimensions and weight:•Length: 80 mm / 3.15 in•Width: 55 mm / 2.17 in•Height: 21 mm / 0.83 in•Weight: 154 g / 5.43 ozOperating conditions•Normal altitude range: 0 to 3,000 m / 10,000 ft above sea level•Operating temperature: 0°C to 40°C / 32°F to 104°F•Storage temperature: -20°C to +50°C / -4°F to +122°F•Maintenance cycle: 500 hours of diving or two years, whichever comes first NOTE: Do not leave the dive computer in direct sunlight!Depth gauge•Temperature compensated pressure sensor•Maximum depth of operation: 150 m / 492 ft (complying with EN 13319)•Maximum static pressure: 15 bar (complying with EN 13319 and ISO 6425)•Accuracy: ± 1% of full scale or better from 0 to 150 m / 492 ft at 20°C / 68°F (complying withEN 13319)•Depth display range: 0 to 300 m / 984 ft•Resolution: 0.1 m from 0 to 100 m / 1 ft from 0 to 328 ft; 1 m from 100 to 150 m / 1 ft from328 to 392 ftTemperature display•Resolution: 1°C / 1.5 °F•Display range: -20 to +50°C/-4 to +122°F•Accuracy: ± 2°C/± 3.6°F within 20 minutes of temperature changeDisplays in mixed gas dive mode•Helium %: 0–95•Oxygen %: 5–99•Oxygen partial pressure display: 0.0–3.0 bar•CNS%: 0–500% with 1% resolution•OTU: 0-500Suunto EON Core36
Other displays•Dive time: 0 to 999 min•Surface time: 0 to 99 h 59 min•Dive counter: 0 to 99 for repetitive dives•No-decompression time: 0 to 99 min (>99 above 99)•Ascent time: 0 to 999 min (- - after 999)•Ceiling depths: 3.0 to 150 m / 10 to 492 ftCalendar clock•Accuracy: ± 25 s/month (at 20°C/68°F)•12/24 h displayCompass•Accuracy: +/- 15°•Resolution: 1°•Max. tilt: 45 degrees•Balance: globalTimer•Accuracy: 1 second•Display range: 0’00 – 99’59•Resolution: 1 secondLogbook•Sample rate. 10 seconds•Memory capacity: approximately 200 hours of divingTissue calculation model•Suunto Fused™ RGBM algorithm (developed by Suunto and Bruce R. Wienke, BSc, MSc,PhD)•15 tissue compartments•Tissue compartment halftimes for nitrogen: 1, 2, 5, 10, 20, 40, 80, 120, 160, 240, 320, 400,480, 560 and 720 min. The on-gassing and o-gassing halftimes are the same.•Tissue compartment halftimes are divided by a constant factor to obtain helium halftimes.•Reduced gradient (variable) M-values based on diving habit and dive violations. The M-values are tracked up to 100 hours after a dive•The exposure calculations (CNS% and OTU) are based on recommendations by R.W.Hamilton, PhD and currently accepted exposure time limit tables and principles.Battery•Type: rechargeable lithium-ion•Battery life: fully charged, min. 20h dive timeSuunto EON Core37
The following conditions have an eect on the expected battery lifetime:•The conditions in which the unit is operated and stored (for example, temperature/coldconditions). Below 10°C/50°F the expected battery lifetime is about 50- 75% of that at20°C/68°F.•The quality of the battery. Some lithium batteries may exhaust unexpectedly, which cannotbe tested in advance. NOTE: Low temperature or an internal oxidation of the battery may activate the batterywarning even though the battery has enough capacity. In this case, the warning usuallydisappears when the dive mode is activated again.Radio receiver•Bluetooth® Smart compatible•communication frequency: 2.4 GHz•range: ~3 m/9.8 ft5.2. Compliance5.2.1. CEHereby, Suunto Oy, declares that this radio equipment type DW171 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: www.suunto.com/EUconformity.The radio equipment operates at 2.4 GHz ISM frequency band(s) and 1 mW maximum power.5.2.2. EN 13319EN 13319 is a European diving depth gauge standard. Suunto dive computers are designed to comply with this standard.5.2.3. EN 250 and FIOHThe tank pressure gauge and dive instrument parts used in measuring the tank pressure meet the requirements set in the section of the European Standard EN 250 that concern tank pressure measurements. FIOH, notified body no.0430, has EC type-examined this type of personal protective equipment.5.2.4. FCC complianceThis device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:(1) this device may not cause harmful interference, and(2) this device must accept any interference received, including interference that may cause undesired operation. This product has been tested to comply with FCC standards and is intended for home or office use. Changes or modifications not expressly approved by Suunto could void your authority to operate this device under FCC regulations.Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:—Reorient or relocate the receiving antenna.—Increase the separation between the equipment and receiver.—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.—Consult the dealer or an experienced radio/TV technician for help.Suunto EON Core38
5.2.5. ISEDThis device complies with Industry Canada licence-exempt RSS standard(s). Operation issubject to the following two conditions:(1) this device may not cause interference, and(2) this device must accept any interference, including interference that may cause undesiredoperation of the device.Suunto OY, has not approved any changes or modifications to this device by the user. Any changes or modifications could void the user’s authority to operate the equipment.Suunto Oy, n’approuve aucune modification apportée à l’appareil par l’utilisateur, quelle qu’en soit la nature. Tout changement ou modification peuvent annuler le droit d’utilisation de l’appareil par l’utilisateur.t applications and their corresponding national Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.5.5. International Limited WarrantySuunto warrants that during the Warranty Period Suunto or a Suunto Authorized ServiceCenter (hereinafter Service Center) will, at its sole discretion, remedy defects in materials orworkmanship free of charge either by a) repairing, or b) replacing, or c) refunding, subject tothe terms and conditions of this International Limited Warranty. This International LimitedWarranty is valid and enforceable regardless of the country of purchase. The InternationalLimited Warranty does not aect your legal rights, granted under mandatory national lawapplicable to the sale of consumer goods.Warranty PeriodThe International Limited Warranty Period starts at the date of original retail purchase.The Warranty Period is two (2) years for Products and Dive wireless transmitters unlessotherwise specified.The Warranty Period is one (1) year for accessories including but not limited to wirelesssensors and transmitters, chargers, cables, rechargeable batteries, straps, bracelets andhoses.Exclusions and LimitationsThis International Limited Warranty does not cover:1. a. normal wear and tear such as scratches, abrasions, or alteration of the color and/ormaterial of non-metallic straps, b) defects caused by rough handling, or c) defects ordamage resulting from use contrary to intended or recommended use, improper care,negligence, and accidents such as dropping or crushing;2. printed materials and packaging;3. defects or alleged defects caused by use with any product, accessory, software and/orservice not manufactured or supplied by Suunto;Suunto EON Core39 XXXX&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSssssssssssssssssssssssssXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXmmmmXWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
4. non-rechargeable batteries.Suunto does not warrant that the operation of the Product or accessory will be uninterruptedor error free, or that the Product or accessory will work with any hardware or softwareprovided by a third party.This International Limited Warranty is not enforceable if the Product or accessory:1. has been opened beyond intended use;2. has been repaired using unauthorized spare parts; modified or repaired by unauthorizedService Center;3. serial number has been removed, altered or made illegible in any way, as determined atthe sole discretion of Suunto; or4. has been exposed to chemicals including but not limited to sunscreen and mosquitorepellents.Access to Suunto warranty serviceYou must provide proof of purchase to access Suunto warranty service. You must also registeryour product online at www.suunto.com/mysuunto to receive international warranty servicesglobally. For instructions how to obtain warranty service, visit www.suunto.com/warranty,contact your local authorized Suunto retailer, or call Suunto Contact Center.Limitation of LiabilityTo the maximum extent permitted by applicable mandatory laws, this International LimitedWarranty is your sole and exclusive remedy and is in lieu of all other warranties, expressed orimplied. Suunto shall not be liable for special, incidental, punitive or consequential damages,including but not limited to loss of anticipated benefits, loss of data, loss of use, cost ofcapital, cost of any substitute equipment or facilities, claims of third parties, damage toproperty resulting from the purchase or use of the item or arising from breach of the warranty,breach of contract, negligence, strict tort, or any legal or equitable theory, even if Suuntoknew of the likelihood of such damages. Suunto shall not be liable for delay in renderingwarranty service.5.6. CopyrightCopyright © Suunto Oy. All rights reserved. Suunto, Suunto product names, their logos andother Suunto brand trademarks and names are registered or unregistered trademarks ofSuunto Oy. This document and its contents are proprietary to Suunto Oy and are intendedsolely for the use of clients to obtain knowledge and information regarding the operation ofSuunto products. Its contents shall not be used or distributed for any other purpose and/orotherwise communicated, disclosed or reproduced without the prior written consent ofSuunto Oy. While we have taken great care to ensure that information contained in thisdocumentation is both comprehensive and accurate, no warranty of accuracy is expressed orimplied. This document content is subject to change at any time without notice. The latestversion of this documentation can be downloaded at www.suunto.com.Suunto EON Core40
5.7. Dive termsTerm ExplanationAltitude dive A dive made at an elevation greater than 300 m (1000ft) above sea level.Ascent rate The speed at which the diver ascends toward thesurface.Ascent time The minimum amount of time needed to reach thesurface on a decompression stop dive.CCR Closed-Circuit Rebreather. Scuba that recycles allexhaled gas.Ceiling On a decompression stop dive, the shallowest depth towhich a diver may ascend based on computed inert gasload.CNS Central nervous system toxicity. Toxicity is caused byoxygen. Can cause a variety of neurological symptoms.The most important of which is an epileptic-likeconvulsion which can cause a diver to drown.CNS% Central nervous system toxicity limit fraction.Compartment See Tissue groupDCS Decompression sickness/illness. Any of a variety ofmaladies resulting either directly or indirectly from theformation of nitrogen bubbles in tissues or body fluids,as a result of inadequately controlled decompression.Decompression Time spent at a decompression stop, or range, beforesurfacing, to allow absorbed nitrogen to escapenaturally from tissues.Decompression range On a decompression stop dive, the depth rangebetween the floor and the ceiling within which a divermust stop for some time during ascent.Dive series A group of repetitive dives between which the divecomputer indicates some nitrogen loading is present.When nitrogen loading reaches zero the dive computerdeactivates.Dive time Elapsed time between leaving the surface to descend,and returning to the surface at the end of a dive.Floor The deepest depth during a decompression stop dive atwhich decompression takes place.Suunto EON Core41
Term ExplanationHe% Helium percentage or helium fraction in the breathinggas.MOD Maximum operating depth of a breathing gas is thedepth at which the partial pressure of oxygen (pO2) ofthe gas mix exceeds a safe limit.Multi level dive A single or repetitive dive that includes time spent atvarious depths and therefore has no decompressionlimits that are not determined solely by the maximumdepth reached.Nitrox (Nx) In sports diving, refers to any mix with a higher fractionof oxygen than standard air.No deco No decompression stop time. The maximum amount oftime a diver may remain at a particular depth withouthaving to make decompression stops during thesubsequent ascent.No decompression dive Any dive which permits a direct, uninterrupted ascent tothe surface at any time.No dec time Abbreviation for no decompression time limit.OC Open-circuit. Scuba that exhausts all exhaled gas.OTU Oxygen tolerance unit. Used to measure the whole-body-toxicity, caused by prolonged exposure to highoxygen partial pressures. The most common symptomsare irritation in the lungs, a burning sensation in thechest, coughing and reduction of the vital capacity.O2% Oxygen percentage or oxygen fraction in the breathinggas. Standard air has 21% oxygen.pO2Partial pressure of oxygen. Limits the maximum depth towhich the nitrox mixture can be safely used. Themaximum partial pressure limit for enriched air diving is1.4 bar. The contingency partial pressure limit is 1.6 bar.Dives beyond this limit risk immediate oxygen toxicity.Repetitive dive Any dive whose decompression time limits are aectedby residual nitrogen absorbed during previous dives.Residual nitrogen The amount of excess nitrogen remaining in a diverafter one or more dives.RGBM Reduced gradient bubble model. Modern algorithm fortracking both dissolved and free gas in divers.Suunto EON Core42
Term ExplanationSCR Semi-closed rebreather. Scuba that recycles a portion ofexhaled gas.Scuba Self-contained underwater breathing apparatus.Surface time Elapsed time between surfacing from a dive andbeginning a descent for the subsequent dive.Tissue group Theoretical concept used to model bodily tissues for theconstruction of decompression tables or calculations.Trimix A breathing gas mix of helium, oxygen and nitrogen.Suunto EON Core43
Indexactive gas..................................................... 21Air/Nitrox....................................................... 19alarms............................................................. 9algorithm lock............................................... 11altitude adjustment................................... 24ascent rate................................................... 10ascent time.................................................. 16battery................................................ 7 , 11, 34battery icon................................................... 11battery level................................................... 7battery status................................................ 7bearing lock................................................. 14bookmark..................................................... 12bungee......................................................... 34calendar clock............................................. 12calibrating compass................................... 13care............................................................... 33CCR................................................................ 19change gas................................................. 23charging......................................................... 11charging battery........................................ 34closed-circuit gases.................................. 25compass................................................. 13, 14customization.............................................. 14customozation............................................. 14date................................................................ 12declination.................................................... 13decompression dive.................................. 16decompression stop.................................. 16deep stop..................................................... 16deepstop..................................................... 28display..................................................... 7 , 18display brightness...................................... 18dive history.................................................. 18dive mode.................................................... 19dive modes.................................................. 14dive profile.................................................. 22dive time........................................................ 11DM5..................................... 8 , 14, 19, 22, 29error condition............................................. 11Fused RGBM.................................. 11 , 19, 29gas consumption....................................... 20gas mixtures................................................ 21gas time........................................................ 21gases..................................................... 21 , 23Gauge............................................................ 19handling....................................................... 33icons................................................................ 7installing bungee....................................... 34logbook............................................... 22 , 28Movescount......................................... 14 , 29multi-gas diving.......................................... 23Nitrox............................................................. 21no-fly time.............................................. 7 , 29notifications................................................... 9open-circuit gases.................................... 26oxygen calculations.................................. 25pairing.......................................................... 30personal adjustment................................. 24rebreather diving........................ 25, 26, 27safety stop........................................... 16 , 28sample rate................................................. 28scratch guard.............................................. 33setpoints...................................................... 26setting declination...................................... 13startup wizard............................................... 8state................................................................. 7strap.............................................................. 34support......................................................... 35surface time.......................................... 7 , 29Tank POD............................................... 7 , 30tank pressure............................................. 30time................................................................ 12timer............................................................... 31Trimix...................................................... 19 , 21USB cable......................................... 8 , 11, 34view................................................................. 7views.............................................................. 14warnings......................................................... 9wash.............................................................. 33water contacts............................................ 32Suunto EON Core44
SUUNTO CUSTOMER SUPPORT1. www.suunto.com/support www.suunto.com/mysuunto2. AUSTRALIA (24/7) +61 1800 240 498 AUSTRIA +43 720 883 104 CANADA (24/7) +1 855 624 9080 CHINA +86 400 661 1646 CHINA - Hong Kong +852 58060687 FINLAND +358 9 4245 0127 FRANCE +33 4 81 68 09 26 GERMANY +49 89 3803 8778 ITALY +39 02 9475 1965 JAPAN +81 3 4520 9417 NETHERLANDS +31 1 0713 7269 NEW ZEALAND (24/7) +64 9887 5223 RUSSIA +7 499 918 7148 SPAIN +34 91 11 43 175 SWEDEN +46 8 5250 0730 SWITZERLAND +41 44 580 9988 UK (24/7) +44 20 3608 0534 USA (24/7) +1 855 258 0900© Suunto OySuunto is a registered trademark of Suunto Oy. All Rights reserved.

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