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HelO2 - Suunto

1. 0cccceee eee eeeeeeeeeeeeaeneees 81 LO 2 DIVENISIOLY sesatianrewieiounl ashes user ones aaa oreo eee E NaN 83 T Suunto Dive Planner SDP oris areae Joo 0d MG A EDE Lawless cata os 84 7 8 Suunto DM4 with Movescount 0 ccc cece cece eee e eect eee ee eeeneeeanaes 86 TO J MIOVESCOUNU s asec wat osnea E a ce Start baba E an det atone Atay gece 87 8 CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER 88 9 BATTERY REPLACEMENT ssiconnsesteout dat iene comatose nancawenmaneusotnanats 91 lo Bane Kil ics satoaghaemsasn een aieaens r A A O tka ane 91 9 2 REGUIFE 1O0IS sic ean tua be eaters wus TEE nate nts teh be ebeae nt com EEE aerate 91 9 3 Replacing the palle sitcsiavetuscia bredine vanes taciae tad ic adele nena ds 92 9 4 Wireless transmitter battery replacement cece ce eee ee eee eens 95 941 Transmiter patern Kits crc uscaceach a Ret conehatotoans Dus EEAS 95 9 4 2 Required tools 0 cece cece c eee c eee cece eens eeeeseeeeeeseeseueseeees 96 9 4 3 Replacing the transmitter battery 0 ccc cece cece eee eee ees 96 10 TECHNICAL DATA cei occa te ale eee decrements Aux tiain ad nawlnn Mee toate Daal ete 98 10 1 Technical SpecifiCaliOns 22i 0sseceueu irina e rae eae thane eee Goad ones 98 TOE 2 FRB Va isanch strane atrce Sama aann dna see mee nam a eS a E e lea EA 102 10 2 1 Suunto Technical RGBM decompression model 5 102 10 2 2 Diver safety and S
2. The length of the dives The conditions in which the unit is operated and stored for example temperat ure cold conditions Below 10 C 50 F the expected battery lifetime is about 50 75 of that at 20 C 68 F The use of the backlight and audible alarms The quality of the battery Some lithium batteries may exhaust unexpectedly which cannot be tested in advance The time the dive computer has been stored until it gets to the customer The battery is installed in the unit at the factory NOTE Low temperature or an internal oxidation of the battery may activ ate the battery warning even though the battery has enough ca pacity In this case the warning usually disappears when the DIVE mode is activated again 101 10 2 RGBM The Suunto Reduced Gradient Bubble Model RGBM is a modern algorithm for pre dicting both dissolved and free gas in the tissues and blood of divers It was developed in co operation between Suunto and Bruce R Wienke BSc MSc PhD It is based on both laboratory experiments and diving data including data from DAN It is a significant advance on the classical Haldane models which do not predict free gas microbubbles The advantage of Suunto RGBM is additional safety through its ability to adapt to a wide variety of situations Suunto RGBM addresses a number of diving circumstances outside the range of dissolved gas only models by e Monitoring continuous multiday diving e Computing closely
3. Condition Desired tables ment value P 2 Ideal conditions excellent Progressively less conservative physical fitness highly experi enced with a lot of dives in the near past Ideal conditions good physical fitness well experienced with dives in the near past PO Ideal conditions Default 53 Personal adjust Condition Desired tables ment value PT Some risk factors or conditions Progressively more conservative exist P2 Several risk factors or condi tions exist WARNING Personal adjustment setting PO P 2 causes a high risk of DCI or other personal injury and death 5 10 Safety Stops Safety Stops are widely considered good diving practice for recreational and technical diving and are an integral part of most dive tables The reasons for performing a Safety Stop include reducing sub clinical DCI microbubble reduction ascent control and orientation before surfacing The Suunto HelO2 displays two different types of Safety Stops Recommended Safety Stop and Mandatory Safety Stop 5 10 1 Recommended Safety Stops With every dive over 10 meters there is a three minute countdown for the Recommen ded Safety Stop to be taken in the 3 6 m 10 20 ft range This is shown with the STOP sign and a three minute countdown in the center window instead of the no decompres sion time 54 SUUNTO WHEN STOP IS DISPLAYED MAKE A RECOMMENDED SAFETY STOP FOR 3 MINUTES NOTE The Recommended Safety Stop a
4. The planning mode calculates no decompression times for MIX1 only If an additional mix is enabled in the MIXED GAS mode it does not affect the calculations in PLAN NoDec mode 79 Higher Altitude and conservative Personal Adjustment settings will shorten the no decompression time limits These limits at different Altitude and Personal Adjustment setting selections are explained in Section 5 9 4 Diving at altitude and in Section 5 9 5 Personal adjustments Dive numbering shown during dive planning Dives belong to the same repetitive dive series if the instrument was still counting down the no fly time at the beginning of the dive The surface interval must be at least 5 minutes for a dive to be considered a repetitive dive Otherwise it is considered a continuation of the same dive The dive number will not change and the dive time will continue where it left off See also Section 7 2 Dive numbering 7 6 MEMORY mode The memory options include a dive logbook MEM Logbook and dive history MEM History The dive entry time and date is registered in the Logbook memory Always check before diving that the time and date are correctly set especially after travelling between dif ferent time zones 80 SUUNTO SUUNTO SUUNTO SUUNTO 7 6 1 Dive logbook MEM Logbook The Suunto HelO2 has a very sophisticated high capacity Logbook and Profile Memory The data is recorded in the profile memory based on the selected sample rate
5. 90 9 BATTERY REPLACEMENT NOTE It is advisable to contact an authorized Suunto representative for battery replacement It is imperative that the change is made in a proper manner to avoid any leakage of water into the battery compartment or computer A CAUTION When the battery is changed all nitrogen and oxygen uptake data is lost Therefore the no fly time shown by the computer should have reached zero or you must wait for 48 hours or preferably up to 100 hours before you dive again All history and profile data as well as the altitude personal and alarm settings will remain in the dive computer memory after the battery change However the clock time and time alarm settings are lost In the MIXED GAS mode the gas mix settings also revert back to default settings Mix1 21 O3 0 He 1 4 bar PO 9 1 Battery kit The battery kit includes a 3 0 V coin type lithium cell battery and a lubricated O ring When handling the battery do not make contact with both of the poles at the same time Do not touch the surfaces of the battery with your bare fingers 9 2 Required tools e A flat 1 5 mm screwdriver or a special tool for spring bars K5857 e Soft cloth for cleaning e Needlenose pliers or small screwdriver for turning securing ring 91 9 3 Replacing the battery The battery and the buzzer are located in the back of the instrument in a separate compartment To change the battery 1 2 8 9 10 92 Thor
6. Alarm indication Alarm reason Three beeps with a one second interval PO value is greater than the adjusted for the maximum of three minutes The value Current depth is too deep for the PO value blinks gas in use You should immediately as cend or change to a gas with a lower oxygen percentage 31 Alarm indication Alarm reason Three beeps with a one second interval for the maximum of 24 seconds The PO value blinks Two beeps with a one and a half second interval The OLF value blinks if the PO value is greater than 0 5 bar Two beeps with a one and a half second interval for three minutes The Er symbol blinks and an arrow points downwards Two beeps with a one and a half second interval for three minutes An arrow points downwards PO value is smaller than 0 18 bar The depth is too shallow and the ambient pressure is too low for the current gas The oxygen content is too low to keep you conscious You should immediately switch the gas In MIXED GAS mode the OLF value reaches the fixed 80 or 100 You can acknowledge the alarm Decompression ceiling depth is exceeded You should immediately descend to or below the ceiling Mandatory safety stop is violated You should immediately descend Three beeps with a one second interval Maximum allowed ascent rate 10 m per for 24 seconds The SLOW symbol blinks min 33 ft per min is exceeded Two beeps with a one and a half second interval for
7. Copyright Suunto Oy 08 2011 All rights reserved 11 3 Patent notice Patents have been issued or applied for one or several features of this product 107 12 DISCLAIMERS 12 1 CE The CE mark is used to mark conformity with the European Union EMC directive 89 336 EEC 12 2 EN 13319 EN 13319 is a European diving depth gauge standard Suunto dive computers are designed to comply with this standard 12 3 EN 250 FIOH The 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 108 13 SUUNTO LIMITED WARRANTY Suunto warrants that during the Warranty Period Suunto or a Suunto Authorized Service Center hereinafter Service Center will at its sole discretion remedy defects in materials or workmanship free of charge either by a repairing or b replacing or c refunding subject to the terms and conditions of this Limited Warranty This Limited Warranty is only valid and enforceable in the country of purchase unless local law stipulates otherwise Warranty Period The Limited Warranty Period starts at the date of original retail purchase The Warranty Period is two 2 years for display devices The Warranty Period is one 1 year for accessories and consumable parts including but not l
8. Symbol Extend Surface Interval Violated Decompression Ceiling or Too Long Bottom Time 7 1 Surface interval An ascent to any depth shallower than 1 2 m 4 ft will cause the DIVE display to be replaced by the SURFACE display SUUNTO IT IS 15 MINUTES SINCE YOU SURFACED FROM A6 MINUTE DIVE THE PRESENT DEPTH IS 0 0 M THE AIRPLANE SYMBOL AND NO FLY VALUE INDICATE THAT YOU SHOULD NOT FLY FOR 20 HOURS Or in the alternative displays the following information will be shown e maximum depth of last dive in meters feet e dive time of last dive in minutes shown as DIVE TIME e the current time shown as TIME e the current temperature in C F If set to MIXED GAS mode the following information will also be shown e the oxygen percentage labeled O2 e the helium percentage labeled He e the oxygen partial pressure labeled PO e the current oxygen toxicity exposure labeled OLF 7 2 Dive numbering Several repetitive dives are considered to belong to the same repetitive dive series when the dive computer has not counted the no fly time to zero Within each series the dives are given individual numbers The first dive of the series will be numbered as DIVE 1 the second as DIVE 2 the third as DIVE 3 and so on If you start a new dive with less than five 5 minutes of surface interval time the dive computer interprets this as a continuation of the previous dive and the dives are con sidered to be the same The diving dis
9. The END OF LOGS text is displayed between the oldest and most recent dive The following information will be shown on three pages 81 SUUNTO SUUNTO SUUNTO Surft O16 IO Of AG 1 9m OC LF f 19 35 il THERE ARE THREE PAGES OF LOGBOOK DIVE INFORMATION USE SELECT BUTTON TO SCROLL BETWEEN LOGBOOK PAGES II AND III THE DATA OF THE MOST RECENT DIVE IS SHOWN FIRST Page l main display e maximum depth e date of dive e type of dive MIXED GAS GAUGE e dive start time e dive number e oxygen percentage for Mix used in the beginning of the dive e helium percentage for Mix used in the beginning of the dive e dive time 82 SUUNTO Page Il e maximum depth e surface time after previous dive e warnings e consumed tank pressure e OLF percentage of MIXED GAS dive Page Ill e scrolling e dive profile temperature depth tank pressure gases NOTE The memory will retain approximately the last 42 hours of dive time After that when new dives are added the oldest dives are deleted The contents of the memory will remain when the battery is changed providing that the battery has been replaced according to the instructions B NOTE Several repetitive dives are considered to belong to the same repetitive dive series if the no fly time has not ended See Sec tion 7 2 Dive numbering for further information 7 6 2 Dive history The dive history is a summary of all the dives
10. actual dive and adjusting the plan for the next dive The Suunto HelO2 can store up to eight different gas mixes of oxygen helium or nitro gen into its memory The minimum O on the dive computer is 8 With the Suunto Dive Planner you can 1 plan a dive including a depth plan decompression schedule and gas mixes for use during a dive 2 simulate the dive and create backup plans for printing them on slates The inform ation on a slate includes the gases depth dive time and ascent profile 3 create recipes for gas mixes either for partial pressure or continuous flow filling and print them out for ordering or mixing 4 download gases maximum POs alarms and settings to the dive computer as well as confirm and set primary and secondary gases 5 upload data of the last dive to Suunto Dive Planner and use the data for planning the next dive or for comparing the actual dive to the planned one After filling the cylinders with the required gas mixes their oxygen and helium percent ages must be analyzed and the dive computer settings modified accordingly either with the Suunto Dive Planner or directly in the dive computer 28 When creating a dive series the real tissue pressures are calculated by uploading the actual dives to the Suunto Dive Planner with the Suunto Dive Manager You can then plan the next dive based on this information 5 2 The Suunto Technical RGBM Suunto s Technical RGBM utilized in the Suunto HelO
11. after 200 dives whichever comes first by an authorized dealer or distributor This service will include a general operational check replacement of the battery and water resistance check The service requires special tools and training Therefore it is advisable to contact an authorized SUUNTO dealer or distributor for service Do not at tempt to do any servicing that you are not sure of 88 Should moisture appear inside the case immediately have the instrument checked by your SUUNTO dealer or distributor Should you detect scratches cracks or other such flaws on the display that may impair its durability immediately have it replaced by your SUUNTO dealer or distributor Wash and rinse the unit in fresh water after every use Protect the unit from shock extreme heat direct sunlight and chemical attack The dive computer cannot withstand the impact of heavy objects like scuba cylinders nor chemicals like gasoline cleaning solvents aerosol sprays adhes ive agents paint acetone alcohol and so on Chemical reactions with such agents will damage the seals case and finish Store your dive computer in a dry place when you are not using it The dive computer will display a battery symbol as a warning when the power gets too low When this happens the instrument should not be used until the battery has been replaced Do not fasten the strap of your dive computer too tightly You should be able to insert your finger between the st
12. at least 12 hours or equivalent to the so called desaturation time if longer than 12 hours For desaturation times lower than 70 minutes no no fly time is given In the Permanent Error mode and GAUGE mode the no fly time is 48 hours The Divers Alert Network DAN recommends the following on no fly times 76 A minimum surface interval of 12 hours would be required in order to be reasonably assured a diver will remain symptom free upon ascent to altitude in a commercial jetliner altitude up to 2 400 m 8 000 ft Divers who plan to make daily multiple dives for several days or make dives that require decompression stops should take special precautions and wait for an ex tended interval beyond 12 hours before a flight Further the Undersea and Hyper baric Medical Society UHMS suggests divers using standard air cylinders and exhibiting no symptoms of decompression illness wait 24 hours after their last dive to fly in an aircraft with cabin pressure up to 2 400 m 8 000 ft The only two excep tions to this recommendation are e Ifa diver has less than two 2 hours total accumulated dive time in the last 48 hours a 12 hour surface interval before flying is recommended e Following any dive that required a decompression stop flying should be delayed for at least 24 hours and if possible for 48 hours Suunto recommends that flying is avoided until all the DAN and UHMS guidelines as well as the dive computer s no fly cond
13. descend and returning to the surface at the end of a dive Abbreviation for equivalent air depth Abbreviation for enriched air nitrox Also called nitrox or Enriched Air EANx Air that has some oxygen ad ded Standard mixes are EAN32 NOAA Nitrox NN I and EAN36 NOAA Nitrox Il NN II Nitrogen partial pressure equivalent table The deepest depth during a decompression stop dive at which decom pression takes place After a change in ambient pressure the amount of time required for the partial pressure of nitrogen in a theoretical compartment to go half way from its previous value to saturation at the new ambient pressure Helium percentage or helium fraction in the breathing gas A breathing gas mix of helium and oxygen The maximum operating depth of a breathing gas is the depth at which the partial pressure of oxygen PO2 of the gas mix exceeds a safe limit 113 Multi level dive Nitrox NOAA No decompression time No decompression dive NO DEC TIME OEA EAN EANx OLF OTU Oxygen tolerance unit Oxygen limit fraction O Oxygen partial pressure 114 A single or repetitive dive that includes time spent at various depths and whose no decompression limits are therefore not determined solely by the maximum depth attained In sports diving refers to any mix with a higher fraction of oxygen than standard air United States National Oceanic and Atmospheric Administration The maximum amount o
14. dive planning methods such as dive tables when you plan the dive After planning your dive analyze your dive gases and if they differ substantially from the planned gases replan your dive Also check the lost gas scenarios in case your decompression gases are altered during a dive for example due to a lost cylinder or a broken valve NOTE For emergency ascents always print out the dive plan from Suunto Dive Planner It ensures that you have a valid decompression schedule at hand in an unlikely event that the dive computer malfunctions For more information about the warnings such as Isobaric Counterdiffusion ICD and settings in Suunto Dive Planner refer to Suunto Dive Planner Help 85 7 8 Suunto DM4 with Movescount The Suunto DM4 with Movescount DM4 is an optional software that greatly enhances the functionality of your Suunto With the DM4 software you can download dive data from your dive computer to your laptop After that you can view and organize all the data recorded with your Suunto You can plan dives with Suunto Dive Planner print copies of your dive profiles and also upload your dive logs to share with your friends at http www movescount com see Section 7 9 Movescount You can always download the latest version of the DM4 from http www suunto com Please check for updates regularly as new features are constantly being developed The following data is transferred from your dive computer to your laptop op
15. enable the mixes you actually have available and remember to check the set values to ensure they are correct 42 The ASC time is calculated based on the assumption that you start the ascent profile immediately and all the PRIMARY gases are changed as soon as their maximum op erating depth allows it That is using the gases that are set as primary the most op timal ascent schedule for the moment is calculated To see the most pessimistic ascent schedule that is a schedule for the situation when gases are not changed at all you can set the gases as secondary and the time it takes to finish the decompression using the current breathing gas is shown as the ASC time Showing the most pessimistic ascent schedule during a long dive can easily result in the ascent time no longer fitting the reserved field and the dive computer displays max 199 min NOTE While setting the gases notice that the calculated maximum op erating depth is displayed in the upper field You cannot change to this gas before you have ascended above this depth In MIXED GAS mode the default oxygen percentage 05 setting is 21 air and oxygen partial pressure PO setting 1 4 bar 5 8 2 Setting the depth alarm SUUNTO SUUNTO i Depth Alar rn ADJUST WITH UP AND on DOWN BUTTONS ACCEPT WITH SELECT BUTTON 43 The depth alarm is factory set to 50 m 160 ft but you can adjust it according to your personal preference or switch it off altoge
16. recorded by the dive computer 83 SUUNTO SUUNTO DIVE HISTORY DISPLAY TOTAL NUMBER OF DIVES DIVE HOURS AND MAXIMUM DEPTH 7 7 Suunto Dive Planner SDP Suunto Dive Planner is an essential part of your dive It is used for creating dive plans WARNING Using the Suunto Dive Planner software is not a substitute for proper dive training Diving with mixed gases has dangers that are not familiar to divers diving with air To dive with trimix triox heliox and nitrox or all of them divers must have specialized training for the type of diving they are doing Start creating a dive plan by defining the maximum depth and bottom time Next plan travel bottom and decompression gases Based on the gases the Dive Planner cal culates the decompression schedule gas change and decompression depths After the decompression schedule is ready the needed gas volume for the dive is calculated based on the Surface Air Consumption SAC rate that can be checked from Suunto Dive Manager 84 WARNING Always use realistic SAC rates and conservative turn pressures during dive planning An over optimistic or erroneous gas planning can result in the exhaustion of breathing gas during decompres sion or in a cave or a wreck After you finish planning your dive with Suunto Dive Planner download the gases settings and alarms into your dive computer You can use your Suunto HelO2 to fine tune the settings and gases manually Always use alternative
17. replacement is recommended 50 NOTE For safety reasons the backlight cannot be activated when the low battery warning is indicated by the battery symbol The optional wireless pressure transmitter sends out a low battery batt warning when its battery voltage is getting low This is shown intermittently instead of the pressure reading When you get this warning the pressure transmitter s battery needs to be replaced 5 9 4 Diving at altitude The dive computer can be adjusted both for diving at altitude and also to increase the conservatism of the mathematical nitrogen model When programming the instrument for the correct altitude you need to select the correct Altitude Adjustment settings according to Table 5 4 Altitude Adjustment settings The dive computer will adjust its mathematical model according to the entered altitude setting giving shorter no decompression times at higher altitudes Table 5 4 Altitude Adjustment settings Alt adjustment Altitude range value 300 1500 m 1000 5000 ft 1500 3000 m 5000 10 000 ft 51 ZA NOTE Section 5 8 4 Setting the personal altitude adjustments describes how the Altitude value is set WARNING Traveling to a higher elevation can temporarily cause a change in the equilibrium of dissolved nitrogen in the body It is recom mended that you acclimatize to the new altitude by waiting at least three 3 hours before diving 5 9 5 Personal adjustments There are person
18. the duration of the deep stop violation The DEEP STOP symbol blinks and an arrow points downwards Mandatory deep stop is violated You should immediately descend Two beeps with a one and a half second Cylinder pressure reaches the selected interval Tank pressure blinks alarm pressure 10 200 bar Cylinder pressure reaches the fixed alarm pressure 50 bar Two beeps with a one and a half second No decompression dive turns into a decom interval for 24 seconds ASC TIME blinks pression stop dive and an arrow points upwards Depth is below the decompression floor level You should immediately ascend to or above the floor Two beeps with a one and a half second Gas change is required You should imme interval Gas mix value 05 O5 He diately change to a gas more favorable to decompression ASC TIME assumes that the gas is changed immediately and is accurate only if you change the gas Three beeps with a one second interval The deep stop depth is reached Make the mandatory deep stop for the duration shown by the timer 33 Alarm indication Alarm reason Three beeps with a one second interval The selected depth 3 120 m 10 394 ft for 24 seconds Maximum depth blinks is exceeded The fixed maximum depth 120 m 394 ft is exceeded Three beeps with a one second interval The selected dive time 1 999 min is ex for 24 seconds Dive time blinks ceeded B NOTE When the backlight is
19. transmitter The unit will then quickly display the selected code number and then start displaying the transmitted cylinder pressure The wireless transmitter indicator flash symbol is displayed every time the Suunto receives a valid signal WARNING lf there are several divers using Suunto with wireless transmission always ensure that each diver is using a different code before Starting the dive The transmitter s code must be changed by changing the pressure You can manually change the transmitter s code by reducing the pressure to less than 10 bar 145 psi and then immediately within 10 12 seconds increasing the pressure to above 15 bar 220 psi Reset the transmitter s code manually see Section 5 8 8 Setting the HP code 38 After this the transmitter selects a new code The Suunto HelO2 must be in cd mode to pair on the new code This procedure can be used if for example your dive buddy has the same code and you need to change it NOTE In order to save battery energy the transmitter enters power saving mode with slower data transmission rate if the tank pres sure remains unchanged for more than five 5 minutes The transmitter continues transmitting with the saved code when any pressure change is measured 5 7 3 Transmitting data After the pairing procedure the Suunto HelO2 will receive cylinder pressure data from the transmitter The pressure is displayed in either bars or psi depending on the unit selec
20. turned OFF it does not illuminate when an alarm is activated WARNING WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE MAXIMUM LIMIT IS REACHED YOU MUST IMMEDIATELY TAKE ACTION TO REDUCE OXYGEN EXPOSURE Failure to take action to reduce oxygen exposure after the warning is given can rapidly increase the risk of oxygen toxicity injury or death 5 6 Error conditions The dive computer has warning indicators that alert you to react to certain situations that would significantly increase the risk of DCI If you do not respond to its warnings the dive computer will enter an Error mode indicating that the risk of DCI has greatly increased If you understand the dive computer and operate it sensibly it is very unlikely you will ever put the instrument into the Error mode 34 Out of calculation limits Suunto uses state of the art memory and microprocessors however there are limita tions to the memory capacity of decompression calculations Therefore Suunto must limit the maximum saturation of tissues on Suunto HelO2 and limit the maximum bottom times on dives performed using the dive computer The bottom times include decom pression calculation While it is highly unlikely that the following bottom times are confronted by open circuit divers it is important to warn you of their possibility The same limits are used in the Suunto Dive Planner and so repetitive dives will be checked while planning a dive because a dive plan must be create
21. xs acc uel aus Coca us aa naate nash anaang EEEE ENEN 24 41 4 Setting he backlight rsrs ndeau ustedes enia aeaeaei 24 4 1 5 Setting the tones cece cece ce cece e ence eee ees eeeeeseeneeseeneenas 24 A 2 AG water contaci it fas dit oc art aw neers titer ga Gan E ncaa deere eaves 25 BEFORE DIVING sodra e nana n a Oa E a EA ETEA eTa 27 SIs Panning your dve S an e aa a a raa 28 5 2 The Suunto Technical RGBM cece cece cece eee EAEAN 29 So EMEergenCy ASCEING nhcuse Py anenna whan dane ed aetacs shavene te Sate cae ees unas whales 30 54 Dive COMPUTES MMMIMAMOMS see a aaa pene eee eraa 31 5 6 Audible and visual alarms s rie iie raataa r a a a ar aan 31 Oe PrOk COMMON Sc tact aren Sata cee reatunetaemetwnacattuceseh Gass EE 34 5 7 Wireless transmission 2 i ccennseaeete eee hdkca ea nehde nea icaarehdedeenrsahdeaanaes 36 5 7 1 Installing the wireless transmitter 0 ccc cece cee cece eee eee eees 36 5 7 2 Pairing and code Selection ccc ccc ceececeeeeeeeeeeeeseuseneeenes 37 Dulin PAN SIMMUMG Cala eena comer EEE E E O 39 5 8 MIXED GAS DIVE mode settings ccc cccee eee eee ee eeeeeeeeeeeenes 41 5 07 1 SUING ING gases renari ewe teh a materia ban aiwemiupetes aerate 42 5 8 2 Setting the depth alarm secos a ernes ccc cc cece cece eee eeeeeeeeeeeseeeeenees 43 5 8 3 Setting the dive time alarm ccc cece cece eee e eee e eee eee eee eens 44 5 8 4 Setti
22. 0 He It remains in this setting until the O2 is adjusted to any other percentage of oxygen 8 99 The default setting for maximum oxygen partial pressure is 1 4 bar however you are able to set it in the range of 0 5 1 6 bar 6 2 2 Oxygen and helium displays When the MIXED GAS mode is activated the display will show the information in the figure below In the MIXED GAS mode the maximum operational depth is calculated based on set 05 He and PO values 68 SUUNTO MIXED GAS DIVE MODE ACTIVATION MAXIMUM OPERATIONAL DEPTH BASED ON SET 0 14 HE 32 AND PO 1 4 IS 83 3 M 02 i432 If set to the MIXED GAS mode the Suunto HelO2 will additionally show on the altern ative display e the oxygen percentage labeled O2 e the helium percentage labeled He e the set oxygen partial pressure limit labeled PO e the current oxygen toxicity exposure labeled OLF e maximum depth e current time e water temperature e dive time e tank pressure 69 SUUNTO SUUNTO SUUNTO SUUNTO DOWN BUTTON TOGGLES BETWEEN HE MAXIMUM DEPTH TANK PRESSURE AND CURRENT TIME UP BUTTON TOGGLES BETWEEN PO OLF DIVE TIME AND WATER TEMPERATURE 6 2 3 Oxygen limit fraction OLF If set to the MIXED GAS mode in addition to tracking the diver s exposure to inert gas the instrument tracks the exposure to oxygen These calculations are treated as entirely separate functions The dive comput
23. 1 of full scale or better from 0 to 120 m 393 ft at 20 C 68 F complying with EN 13319 e Depth display range 0 to 150 m 492 ft e Resolution 0 1 m from 0 to 100 m 1 ft from 0 to 328 ft Cylinder pressure gauge e Rated working pressure 300 bar 4000 psi maximum allowed pressure e Resolution 1 bar 10 psi 98 Other displays Dive time 0 to 999 min counting starts and stops at 1 2 m 4 ft depth Surface time 0 to 99 h 59 min Dive counter 0 to 99 for repetitive dives No decompression time 0 to 199 min after 199 Ascent time 0 to 199 min after 199 Ceiling depths 3 0 to 100 m 10 to 328 ft Air time 0 to 99 min after 99 Temperature display e Resolution 1 C 1 F e Display range 20 to 50 C 9 to 122 F Display range 9 to 50 C 9 to 122 F e Accuracy 2 C 3 6 F within 20 minutes of temperature change Displays only in MIXED GAS mode Oxygen 8 99 Helium 0 92 Oxygen partial pressure display 0 0 3 0 bar Oxygen Limit Fraction 0 200 with 1 resolution Logbook dive profile memory e Recording interval 20 seconds adjustable 10 20 30 60 s e Memory capacity approximately 80 hours of diving with 20 second recording interval e Depth resolution 0 3 m 1 ft Operating conditions e Normal altitude range 0 to 3 000 m 10 000 ft above sea level 99 Operating temperature 0 C to 40 C 32 F to 104 F Storage temperature 20 C to 50 C 4 F to 122 F It is recommended that the in
24. 2 predicts both dissolved and free gas in the blood and tissues of divers It is a significant advance on the classic Haldane models which do not predict free gas The advantage of Suunto RGBM is additional safety through its ability to adapt to a variety of situations and dive profiles SUUNTO SUUNTO YOU ARE ADVISED TO MAKE A DEEPSTOP AT 18 M THE SECOND INDICATOR SHOWS THAT YOU HAVE 110 SECONDS LEFT OF YOUR DEEPSTOP In order to optimize the response to different increased risk situations an additional category of stop referred to as a Mandatory Safety Stop has been introduced The combination of stop types depends on the user settings and the specific dive situation To get the most from the RGBM safety benefits refer to Section 10 2 RGBM 29 5 3 Emergency ascents Before you dive you must have the dive plan created with the Suunto Dive Planner printed out on a slate You must also have a back up plan for lost gases In the unlikely event that the dive computer malfunctions during a dive start using an alternative depth gauge and timer and following the ascent schedule and gas switches that are on the slate If you dive using only air follow these steps 1 Assess the situation calmly and then move promptly to less than 18 m 60 ft 2 At 18 m 60 ft slow down your ascent rate to 10 m 33 ft per minute and move to a depth between 3 and 6 m 10 and 20 ft 3 Stay there for as long as your gas supply will safely allow Af
25. After this the instrument will continue to provide subsequent interval and repetitive dive information Rather than requiring you to make stops at fixed depths the dive computer lets you decompress within a range of depths continuous decompression The ascent time ASC TIME is the minimum amount of time needed to reach the surface in a decompression dive It includes e the time needed at the deep stop e the time needed to ascend to the ceiling at an ascent rate of 10 m 33 ft per minute The ceiling is the shallowest depth to which you should ascend e the time needed at the ceiling e the time needed at the Mandatory Safety Stop if any e the time needed to reach the surface after the ceiling and Safety Stops have been completed 62 WARNING YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DIS PLAYED BY THE INSTRUMENT The ascent time will increase if you e do not use optimal decompression gas e remain at depth e ascend slower than 10 m 33 ft per minute or e make your decompression stop deeper than at the ceiling These factors will also increase the amount of gas required to reach the surface Ceiling ceiling zone floor and decompression range When in decompression it is important that you understand the meaning of ceiling floor and decompression range e The ceiling is the shallowest depth to which you should ascend when in decom pression At this depth or below you must perform all stops e The ceiling zone i
26. ER BASED ON THE SELECTED 05 AND A MAXIMUM PO OF 1 4 BAR Exposure to greater depths increases the risk of oxygen toxicity and decom pression illness DIVES WITH REQUIRED DECOMPRESSION STOPS ARE NOT RECOMMENDED YOU SHOULD ASCEND AND BEGIN DE COMPRESSION IMMEDIATELY WHEN THE DIVE COMPUTER SHOWS YOU THAT A DECOMPRESSION STOP IS REQUIRED Note the blinking ASC TIME symbol and the upward pointing ar row USE BACK UP INSTRUMENTS Ensure that you use back up instrumentation including a depth gauge submersible pressure gauge timer or watch and have access to decompression tables whenever diving with the dive computer PERFORM PRE CHECKS Always activate and check the device before diving in order to ensure that all Liquid Crystal Display LCD segments are completely displayed the device has not run out of battery power and that the oxygen altitude personal RGBM adjustments and Safety Deep Stop are correct WARNING WARNING WARNING YOU ARE ADVISED TO AVOID FLYING ANY TIME THE COM PUTER COUNTS DOWN THE NO FLY TIME ALWAYS ACTIV ATE THE COMPUTER TO CHECK THE REMAINING NO FLY TIME PRIOR TO FLYING Flying or traveling to a higher altitude within the no fly time can greatly increase the risk of DCI Review the recommendations given by Divers Alert Network DAN There can never be a flying after diving rule that is guaranteed to com pletely prevent decompression illness THE DIVE COMPUTER SHOULD NEVER BE TRADED OR SHARED BET
27. HelO USER S GUIDE en Present Depth Daily Alarm Indicator Dive Alarm Indicator a SUUNTO No Fly Icon au Oui a Safety Stop Indicator Tank Pressure Bar Graph OLF po2 Wireless Transmitter Indicator Iim m IMER MAX DIVE TIME Date Maximum Depth O He Mixed Gas Mode Time Tank Pressure Low Battery Active Water Contact Indicator Diver Attention Symbol Current Time Display Mode Indicator No Decompression Time Total Ascent Time Ceiling Depth Deep Stop Ceiling Safety Deep Stop Time Surface Interval Time No Fly Time Gas Mix Selection Ascent Rate Bar Graph Weekday Dive Time Temperature PO Mixed Gas Mode OLF Mixed Gas Mode WELCOME TO THE WORLD OF SUUNTO DIVE COMPUTERS 8 1 1 Using HelO2 with Dive Manager and Dive Planner 00eeee eens 9 WARNINGS CAUTIONS AND NOTES 2 cc ccee taan E a a 10 SUUNTO HelO gt USER INTERFACE evisu ena cess a a a aaa tetas 19 3 1 Navigating in the menus ccc ccc eee c eect eee tee seen eeteeesenseneeenes 19 3 2 Button symbols and functions ccc cece eee e eee ee eect eee ee eaeeeees 20 GE TUNG STARTED aee a ene a seen jas arene aateeude acme 22 41 IME TMOG SCUINGS srann used tareivia E A N dn AENEA 22 AAA SCUING Iheine ne ited whan oe kaa Danae a ss 23 41 2 Seung ING Gales 223 uanteseneseinaaraeeatesseaecdatwanhaaas ANE 23 Aea Sening Ue TUM Sie
28. ISED TO MAKE A 55 ii THATA DEEPSTOP IS DEEPSTOP AT 25 M FOR THE big NEEDED AT THE DURATION SHOWN BY THE DEPTH OF 25 M TIMER 42 SEC REMAINING 57 6 DIVING This section contains instructions on how to operate the dive computer and interpret its displays The dive computer is easy to use and read Each display shows only the data relevant to that specific diving mode 6 1 Diving related information This section contains information on diving with gas mixes To activate the MIXED GAS DIVE mode please refer to Section 5 9 1 Accessing DIVE mode SUUNTO DIVE HAS JUST BEGUN AND AVAILABLE NO DECOMPRESSION TIME IS OVER 199 MINUTES SO NO VALUE IS DISPLAYED NOTE The dive computer will remain in the SURFACE mode at depths less than 1 2 m 4 ft At depths greater than 1 2 m 4 ft the instru ment will go into the DIVE mode automatically However it is re commended that you activate the SURFACE mode manually before entering the water in order to perform the necessary dive pre checks NOTE The default fields shown on your dive computer in the DIVE mode are the ones you select while in the SURFACE mode 58 6 1 1 Basic dive data During a No decompression dive the following information is displayed e your present depth in meters feet e the available no decompression time in minutes as NO DEC TIME e the ascent rate presented as a bar graph on the right side n SUUNTO DIVE DISPLAY PRESENT DEPTH IS 15 M
29. MAX DEPTH OF DIVE IS 33 5 M AND NO DECOMPRESSION STOP TIME LIMIT IS 38 MIN ELAPSED DIVE TIME IS 13 MIN Alternative displays by pressing the UP DOWN buttons show e the elapsed dive time in minutes shown as DIVE TIME e the water temperature in C F e the maximum depth during this dive in meters feet indicated as MAX e the current time shown as TIME SUUNTO SUUNTO UP BUTTON TOGGLES BETWEEN DIVE TIME AND WATER TEMPERATURE 59 In addition with the optional wireless transmission enabled e the cylinder pressure in bar or psi displayed in the lower left corner e the cylinder pressure graphically displayed on the left side 6 1 2 Bookmark It is possible to record bookmarks in the profile memory during a dive These bookmarks are displayed when scrolling the profile memory on the display The bookmarks are also shown as annotations in the downloadable Suunto DM4 with Movescount software The bookmark logs the depth time water temperature and tank pressure when available To make a bookmark in the profile memory during a dive press the SELECT button A brief confirmation will be given SUUNTO SUUNTO A BOOKMARK IS PLACED IN THE PROFILE MEMORY DURING A DIVE BY PRESSING THE SELECT BUTTON 6 1 3 Ascent rate indicator The ascent rate is shown graphically along the right hand side When the maximum allowed ascent rate is exceeded the lower segments start to blink with the top segment staying solid indicati
30. T BUTTON 5 8 6 Setting the tank pressure alarm The tank pressure alarm can be set ON or OFF and in the range of 10 200 bar The alarm is the secondary cylinder pressure alarm point The alarm is activated when the tank pressure drops below the set limit You can acknowledge this alarm 45 The 50 bar 700 psi alarm however is fixed and cannot be changed You cannot ac knowledge this alarm SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 8 7 Setting the tank pressure The wireless transmission can be set ON or OFF depending whether the wireless pressure transmitter is used or not No cylinder pressure related data is shown nor data reception made when this selection is OFF SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 8 8 Setting the HP code The HP Code setting allows you to verify the selected code and to erase the stored code It also enables re pairing if necessary 46 SUUNTO SUUNTO i Gore 4 ves O O S 5 8 9 Setting the units In the Unit settings you are able to choose between metric meters Celsius bar and imperial feet Fahrenheit psi units ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON SELECT TANK PRESSURE ON SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 9 Activation and pre checks This section describes how to activat
31. TO 1 Mined Dive Settings 4 I Alarm i Ol fofiy goo IO USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN DIVE SETTINGS Z NOTE Some settings cannot be changed until five 5 minutes has elapsed after the dive 41 5 8 1 Setting the gases If set to the MIXED GAS mode the correct oxygen and helium percentages of the gas in your cylinders and additional gases must always be entered into the dive computer to ensure correct tissue and oxygen calculation In addition the oxygen partial pressure limit must be set You can either modify the dive plan with the Suunto Dive Planner or enter the correct values directly into the dive computer after analyzing the gas mixes in your cylinders a a SUUNTO SUUNTO SUUNTO ADJUST WITH ADJUST WITH UP AND DOWN UP AND DOWN BUTTONS BUTTONS a ACCEPT WITH ACCEPT WITH B32 i4 SELECT BUTTON SELECT BUTTON When in the MIXED GAS setting mode the equivalent maximum operating depth based on the chosen setting is also be displayed After entering values for Mix1 you can set additional mixes Mix2 Mix8 similarly You can set them to PRIMARY SECONDARY or OFF Mix1 is always set as a primary gas In order to minimize the risk of error during a dive it is highly recommended that the mixes are set in the proper order This means that as the mix number rises so does oxygen content and this is the order they are usually used during the dive Before a dive only
32. The transmitter battery kit includes a 3 0 V CR AA lithium cell battery and a lubricated O ring When handling the battery do not make contact with both of the poles at the same time Do not touch the metal surfaces of the battery with your bare fingers 95 9 4 2 Required tools A Phillips head screwdriver Soft cloth for cleaning 9 4 3 Replacing the transmitter battery To change the transmitter battery Oe ee 96 Remove the transmitter from the regulator HP port Unscrew and remove the four Phillips screws on the back of the transmitter Pull off the transmitter cover Carefully remove the O ring Be careful not to damage the sealing surfaces Carefully remove the battery Do not touch the electrical contacts or the circuit board Check for any traces of leakage or for any other damage If there is a leak or any other damage take the transmitter to an authorized Suunto representative or distributor for checking and repair Check the condition of the O ring A defective O ring may indicate sealing or other problems Dispose of the old O ring even if it seems to be in good condition Check that the O ring groove and the sealing surface of the cover are clean Clean them with a soft cloth if necessary Gently insert the new battery into the battery compartment Check the polarity of the battery The mark should point toward the top of the compartment and the mark towards the bottom NOTE It is imperative that you w
33. WEEN USERS WHILE IT IS IN OPERATION Its information will not apply to someone who has not been wearing it throughout a dive or sequence of repetitive dives Its dive profiles must match that of the user If it is left on the surface during any dive the dive computer will give inaccurate information for sub sequent dives No dive computer can take into account dives made without the computer Thus any diving activity up to four days prior to initial use of the computer may cause misleading information and must be avoided DO NOT EXPOSE ANY PART OF YOUR DIVE COMPUTER TO ANY GAS MIX CONTAINING MORE THAN 40 OXYGEN En riched air with greater oxygen content presents a risk of fire or explosion and serious injury or death 13 WARNING WARNING 14 THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PERCENTAGE VALUES OF OXYGEN CONCENTRATION DO NOT ROUND UP FRACTIONAL PERCENTAGES For example 31 8 oxygen should be entered as 31 Rounding up will cause nitrogen percentages to be understated and will affect decompres sion calculations If there is a desire to adjust the computer to provide more conservative calculations use the personal adjust ment feature to affect decompression calculations or reduce the PO setting to affect oxygen exposure according to the entered O and PO values SET THE CORRECT ALTITUDE ADJUSTMENT MODE When diving at altitudes greater than 300 m 1000 ft the Altitude Adjust ment feature must be correctly selected
34. Y AND CONSULT A DOCTOR WARNING WARNING WARNING NOT FOR PROFESSIONAL USE Suunto dive computers are intended for recreational use only The demands of commercial or professional diving may expose the diver to depths and condi tions that tend to increase the risk of decompression illness DCI Therefore Suunto strongly recommends that the device not be used for any commercial or professional diving activities ONLY DIVERS TRAINED IN PROPER USE OF SCUBA DIVING EQUIPMENT SHOULD USE A DIVE COMPUTER No dive computer can replace the need for proper dive training Insufficient or improper training may cause a diver to commit errors that may lead to serious injury or death THERE IS ALWAYS A RISK OF DECOMPRESSION ILLNESS DCI FOR ANY DIVE PROFILE EVEN IF YOU FOLLOW THE DIVE PLAN PRESCRIBED BY DIVE TABLES OR A DIVE COMPUTER NO PROCEDURE DIVE COMPUTER OR DIVE TABLE WILL PREVENT THE POSSIBILITY OF DCI OR OXYGEN TOXICITY An individual s physiological make up can vary from day to day The dive computer cannot account for these variations You are strongly advised to remain well within the exposure limits provided by the instrument to minimize the risk of DCI As an added measure of safety you should consult a physician regarding your fitness before diving 11 12 WARNING WARNING WARNING WARNING SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS LIMIT THEIR MAXIMUM DEPTH TO 40 M 130 FT OR TO THE DEPTH CALCULATED BY THE COMPUT
35. ait at least 30 seconds before re installing the transmitter battery When the battery is re installed the transmitter sends an overpressure signal on code 12 for 10 seconds after which it goes to normal operation and shuts down after five 5 minutes 9 Check that the new lubricated O ring is in good condition Put it in the right position in the O ring groove Be very careful not to get any dirt on the O ring or its sealing surfaces 10 Carefully put the transmitter cover into place Note that the cover will only fit in one position Match the three slots on the inside of the cover with the three ledges below the battery 11 Screw the four screws back into place Transmitter Battery K5546 Transmitter cover V5824 a Transmitter screws P r j J 55 K5542 x 4 Transmitter Cover o ring HP port o ring 9 25x1 78 U 2 00x25 00 K5538 K1042 i z Wireless transmitter parts The code stands for spare part order number 97 10 TECHNICAL DATA 10 1 Technical specifications Dimensions and weight e Diameter 61 0 mm 2 4 in e Thickness 28 mm 1 1 in e Weight 68 g 2 4 oz Transmitter e Max diameter 40 mm 1 57 in e Length 80 mm 3 15 in e Weight 118 g 4 16 oz e Display resolution 1 bar 1 psi Depth gauge e Temperature compensated pressure sensor e Calibrated complying with EN 13319 e Maximum depth of operation 120 m 394 ft complying with EN 13319 e Accuracy
36. al factors that can affect your susceptibility to DCI which you can predict in advance and input into the decompression model Such factors vary between divers and also for the same diver from one day to another The five step Personal Adjustment setting is available if a more conservative or aggressive dive plan is desired The personal factors which tend to increase the possibility of DCI include but are not limited to e cold exposure water temperature less than 20 C 68 F e below average physical fitness level e fatigue e dehydration e previous history of DCI e stress e obesity e patent foramen ovale PFO e exercise on or after dive This feature is used to adjust the computer to be more conservative according to personal preference by entering the suitable Personal Adjustment setting with the help of Table 5 5 Personal Adjustment settings In ideal conditions retain the default setting PO If conditions are more difficult or any of the factors which tend to increase the possibility of DCI exist select P1 or even the most conservative P2 For very ex perienced divers willing to take high personal risks and full responsibility of their own condition two negative values of the personal adjustments P 2 and P 1 exist The dive computer then adjusts its mathematical model according to the entered Personal Adjustment setting giving shorter no decompression times Table 5 5 Personal Adjustment settings Personal adjust
37. d by residual nitro gen absorbed during previous dives The amount of excess nitrogen remaining in a diver after one or more dives Abbreviation for surface interval time Elapsed time between surfacing from a dive and beginning a descent for the subsequent repetitive dive A dive made with two or more breathing gas mixes Theoretical concept used to model bodily tissues for the construction of decompression tables or calculations A breathing gas mix of helium oxygen and nitrogen Abbreviation for Undersea and Hyperbaric Medical Society Another form of oxygen toxicity which is caused by prolonged exposure to high oxygen partial pressures The most common symptoms are irrita tion in the lungs a burning sensation in the chest coughing and reduction of the vital capacity Also called Pulmonary Oxygen Toxicity See also OTU 115 G SUUNTO HELP DESK Global 358 2 284 1160 USA toll free 1 800 543 9124 Canada toll free 1 800 267 7506 www suunto com SUUNTO Copyright o Suunto Oy 04 2009 08 2011 Suunto is a registered trademark of Suunto Oy All Rights reserved
38. d in any case Table 5 2 Possible decompression dive times stop Descent at the rate of 10 m min is included in the time The times allow for a safe ascent using the bottom gas all the way to the surface without exceeding tissue pressures If a diver violates these limits the dive computer goes to an error mode and the rest of the dive must be conducted using the diveplan on the slate 35 Omitted decompression The Error mode results from omitted decompression for example when you stay above the ceiling for more than three minutes During this three minute period the Er warning is shown and the audible alarm beeps After this the dive computer enters a permanent Error mode The instrument will continue to function normally if you descend below the ceiling within this three minute period When the dive computer is in the permanent Error mode only the Er warning is shown in the center window The dive computer does not show times for ascent or stops However all the other displays function as before to provide information for ascent You should immediately follow through the decompression schedule in your backup plan After surfacing you should not dive for a minimum of 48 hours During the permanent Error mode the Er text is displayed in the center window and the planning mode is disabled 5 7 Wireless transmission The HelO2 can be used together with a wireless cylinder pressure transmitter that easily attaches to the high pr
39. doing so by accident you should stay somewhat below the ceiling 64 Display below the floor The blinking ASC TIME sign and an upward pointing arrow indicate that you are below the floor The ceiling depth is shown on the left side and the minimum total ascent time on the right side of the center window Below is an example of a decompression dive above Deep Stops below the floor SUUNTO 1 13 0 215 UPWARD POINTING ARROW BLINKING ASC TIME AND AN ALARM TELL YOU TO ASCEND MINIMUM TOTAL ASCENT TIME INCLUDING MANDATORY SAFETY STOP IS 15 MINUTES CEILING IS AT 3 M Display above the floor When you ascend above the floor the ASC TIME sign stops blinking and the upward pointing arrow disappears Below is an example of a decompression dive above the floor SUUNTO UPWARD POINTING ARROW HAS DISAPPEARED AND ASC TIME LABEL HAS STOPPED BLINKING MEANING YOU ARE IN THE DECOMPRESSION RANGE 65 Decompression will now begin but is very slow Therefore you should continue your ascent Display at the ceiling zone When you reach the ceiling zone the display will show you two arrows pointing at each other the hour glass icon Below is an example of a decompression dive at the ceiling Zone SUUNTO TWO ARROWS POINT AT EACH OTHER HOUR GLASS YOU ARE IN THE OPTIMUM CEILING ZONE AT 3 M AND YOUR MINIMUM ASCENT TIME IS 15 MINUTES During the decompression stop ASC TIME will count down towards ze
40. e e eee e eee e een eeeeeneeenees 58 6 1 k Basic dye Calas ccscnotietanerciiesautarsestseawht ce AA 59 GF 122 EEO OME Korner stan rntiattec ahem arse ets mala snes alan se hata E ema metus 60 GFT 3 ASCE Tale INGICALON aee lsat anne ammaes ae e encased a ea Ea 60 6TA Sae SIODS tasters sais neat Saved R uniemae nel RE TERRE RINE 61 6 15 DECOMPIESSION GIVES 4 522 ois asite i snd a dans ho E obs 62 6 2 Diving in MIXED GAS mode ccc cece cece ee ee eee eee ea 67 6 2 1 Before diving in the MIXED GAS mode 0ccccsee eee ee eee e es 67 6 2 2 Oxygen and helium displays ccc cece cece eee cece eee e eee eeeaes 68 6 2 3 Oxygen limit fraction OLF ccc cece cece ee eee e eee ene eee e eee eeeas 70 6 2 4 Gas change and multiple breathing gas MIXES cee cena ee 71 6 3 Diving in the GAUGE mode ccc ccc cece ce cece eee eeeeeeeeseeeeenees 72 KAFEER DINING risinn tanec gama eae aaa aaa a game eatin uae a 74 FV SUMACE nerva erei nrar need et EE ETE AEL ANTEN 74 Fiz DIVE NUMBING iw vatican aea a Coane T tora as Gates ean ees 75 1 3 Repetitive GIVE plannihg icici set seeks have aoe a r eed aes arenas 76 FA Rlving ater diving zerresini acoe a ar a A ar a 76 hn Ook PAIN OOS SAAE AE ETE A AE A AEE auc AT 78 7 5 1 DIVE PLANNING mode PLAN NoDec 00ccceeeeeeeeee ees 78 7 6 MEMORY 1006 4255 aici oN EEA N NEON 80 7 6 1 Dive logbook MEM Logbook
41. e it and really make it YOUR computer Set the correct time and date tones unit and backlight set tings Suunto HelO2 is a very user friendly dive computer and you will quickly become fa miliar with its functions Make absolutely sure that you know your computer and have it set up as you want it BEFORE getting into the water 4 1 TIME mode settings The first thing to do with your Suunto HelO2 is to modify the TIME mode settings the time date units backlight and tones NOTE The display is illuminated by holding down the MODE button for more than 2 seconds The figure below shows how to enter the TIME Settings menu USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN TIME DATE UNITS BACKLIGHT AND TONES 22 4 1 1 Setting the time In the Time setting mode you are able to set the hour minute and second as well as choose between a 12 and 24 hour display a a SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4 1 2 Setting the date In the Date setting mode you are able to set the year month and day The day of the week is automatically calculated in accordance with the date In metric units the date is presented as DD MM and in imperial units as MM DD SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 23 4 1 3 Setting the units In the Units setting mode you are able to choose whether the units are displayed in either the metric or imperial syste
42. e new lubricated O ring is in good condition Put it in the right position on the battery compartment lid Be very careful not to get any dirt on the o ring or its sealing surfaces Carefully press the lid onto the battery compartment with your thumb while making sure that the O ring is not at any point protruding out on the edge Put your other thumb through the locking ring Press this thumb firmly against the lid and release the other one Make sure that the lid is pressed completely down Turn the locking ring counterclockwise with your free thumb and fingers until it snaps into its locked position The dive computer should now active its timekeeping mode and show time 18 00 6 00 PM and date SA 01 01 Activate the instrument Check that e all display segments work e the low battery warning is off e the buzzer beeps and backlight works e all the settings are correct Reset if necessary CAUTION Check after the first dives for possible moisture under the trans parent battery compartment lid indicating a leak 93 Securing Ring Battery Compartment Lid with buzzer O Ring 94 HelO Battery Battery Retainer 9 4 Wireless transmitter battery replacement NOTE It is advisable to contact an authorized Suunto representative for transmitter battery replacement It is imperative that the change is made in a proper manner to avoid any leakage of water into the transmitter 9 4 1 Transmitter battery kit
43. e of the gas in your cylinders must always be entered into the computer to ensure correct inert gas and oxygen calculations The dive computer adjusts its mathematical inert gas and oxygen calculation models accordingly The dive computer will not accept fractional percentage values of oxygen and helium concentration Do not round up fractional percentages For example 31 8 oxygen should be entered as 31 Rounding up 67 will cause inert gas percentages to be understated and will affect decompression calculations If you want to adjust the computer to provide more conservative calcula tions use the personal adjustment feature to affect decompression calculations or reduce the PO setting to affect oxygen exposure according to the entered O2 and PO values Calculations based on nitrox use result in longer no decompression times and shallower maximum depths than diving with air As a safety precaution the oxygen calculations in the computer are made with an oxygen percentage of 1 set 05 When the dive computer is set in MIXED GAS mode the Dive Planning mode calculates using the O2 and PO values that are currently in the computer To set the nitrox trimix and or heliox mixes refer to Section 5 8 1 Setting the gases Default gas mix settings In the MIXED GAS mode the Suunto HelO2 allows you to set 1 8 gas mixes containing 8 99 oxygen and 0 92 helium In the MIXED GAS mode the default setting is standard air 21 O and
44. e the DIVE mode and explains the pre checks that it is highly recommended you perform before you get into the water 47 5 9 1 Accessing DIVE mode The Suunto HelO2 has two diving modes MIXED GAS mode for diving with gas mixes and GAUGE mode for use as a bottom timer The chosen dive mode is displayed when the DIVE mode is accessed and you can toggle between the submodes by pressing the UP DOWN buttons SUUNTO SUUNTO SUUNTO a REL l NA OLO O Cj 5 9 2 DIVE mode activation The dive computer activates automatically when submerged deeper than 0 5 m 1 5 ft However it is necessary to activate the DIVE mode BEFORE diving to check the altitude and personal adjustment settings battery condition oxygen settings and so on After activation all graphical display elements are turned ON and the backlight and the beep are activated A few seconds later the battery power indicator is shown 48 SUUNTO SUUNTO SUUNTO SUUNTO Surft ooo Holy ooo OC At this time perform your pre checks and ensure that the instrument operates in the correct mode and provides a complete display MIXED GAS GAUGE mode the battery level is ok the altitude and personal adjustment settings are correct the instrument displays correct units of measurement Metric Imperial the instrument displays the correct temperature and depth 0 0 m O0 ft the alarm beeps If the optional wireless pressure transmitter is used ensure that
45. er calculates separately for Central Nervous System oxygen toxicity CNS and Pulmonary Oxygen toxicity the latter measured by the addition of Oxygen Toxicity Units OTU Both fractions are scaled so that the maximum tolerated exposure for each is expressed as 100 70 The Oxygen Limit Fraction OLF displays only the value of the higher of the two calculations The oxygen toxicity calculations are based on the factors listed in Sec tion 10 3 Oxygen exposure 6 2 4 Gas change and multiple breathing gas mixes The Suunto HelO2 allows gas changes to enabled gas mixes during the dive When the maximum operating depth allows for a gas change the dive computer prompts you to change the gas When PO permits better decompression gas to be used the dive computer prompts it automatically if it is set as primary Gas changes are made by following the procedure below SUUNTO SUUNTO SUUNTO SUUNTO CHANGING GAS MIX SCROLL THROUGH ENABLED MIXES BY PRESSING THE UP OR DOWN BUTTONS SELECT NEW MIX BY PRESSING THE SELECT BUTTON 71 NOTE NOTE Mix number 05 He and PO for the mixes are shown when scrolling If the set PO limit is exceeded it will be shown with the PO value blinking The dive computer does not allow you to change to a gas whose set PO is exceeded In such a case the mix is shown but cannot be selected If the PO is less than 0 18 bar the dive computer gives an alarm If no button is pressed in 15 second
46. essure port of the regulator By using the transmitter you can benefit from receiving cylinder pressure data direct to your wrist In order to use the transmitter the wireless integration needs to be enabled in your Suunto HelO2 settings To enable or disable the wireless integration refer to Sec tion 5 8 7 Setting the tank pressure 5 7 1 Installing the wireless transmitter When purchasing the Suunto HelO2 we strongly recommend that you have your Suunto representative attach the transmitter to the first stage of your regulator 36 However if you decide to attach it yourself do the following 1 Remove the high pressure HP port plug on the first stage of your regulator using an appropriate tool 2 Thread the high pressure transmitter of the Suunto into the HP port of your regu lator with your fingers DO NOT OVERTIGHTEN Maximum torque is 6 Nm 4 4 lbsft or 53 Ibsin The seal is based on a static O ring not force 3 Attach the regulator to the scuba cylinder and slowly open the valve Check for leaks by submerging the regulator first stage in water If leaks are detected check the condition of the O ring and sealing surfaces 5 7 2 Pairing and code selection In order to receive wireless data the transmitter and the Suunto HelO2 need to be paired During the pairing procedure the dive computer locks on the code that the transmitter has The transmitter is activated when the pressure exceeds 15 bar 300 psi and it then
47. f time a diver may remain at a particular depth without having to make decompression stops during the subsequent as cent Any dive which permits a direct uninterrupted ascent to the surface at any time Abbreviation for no decompression time limit Abbreviations for oxygen enriched air nitrox Abbreviation for oxygen limit fraction Abbreviation for oxygen tolerance unit Used to measure the whole body toxicity A term used by Suunto for the values displayed in the oxygen toxicity bar graph The value is either the CNS or the OTU Oxygen percentage or oxygen fraction in the breathing gas Standard air has 21 oxygen Limits the maximum depth to which the nitrox mixture can be safely used The maximum partial pressure limit for enriched air diving is 1 4 bar The contingency partial pressure limit is 1 6 bar Dives beyond this limit risk immediate oxygen toxicity PFO PO RGBM Reduced Gradient Bubble Model Repetitive dive Residual nitrogen SURF TIME Surface interval time Technical dive Tissue group Trimix UHMS Whole body toxicity Abbreviation for patent foramen ovale It is a form of congenital heart defect that enables blood flow between the left and right atria via the in teratrial septum Abbreviation for oxygen partial pressure Abbreviation for Reduced Gradient Bubble Model Modern algorithm for tracking both dissolved and free gas in divers Any dive whose decompression time limits are affecte
48. id doing so by accident you should stay somewhat below the ceiling DO NOT DIVE WITH A CYLINDER OF ENRICHED AIR IF YOU HAVE NOT PERSONALLY VERIFIED ITS CONTENTS AND ENTERED THE ANALYSIS VALUE INTO YOUR DIVE COM PUTER Failure to verify cylinder contents and enter the appropri ate O into your dive computer will result in incorrect dive planning information DO NOT DIVE WITHA GAS IF YOU HAVE NOT PERSONALLY VERIFIED ITS CONTENTS AND ENTERED THE ANALYZED VALUE INTO YOUR DIVE COMPUTER Failure to verify cylinder contents and enter the appropriate gas values where applicable into your dive computer will result in incorrect dive planning inform ation Diving with gas mixtures exposes you to risks that are different from those associated with diving with standard air These risks are not obvious and require training to understand and avoid Risks include possible serious injury or death WARNING WARNING WARNING WARNING WARNING Traveling to a higher elevation can temporarily cause a change in the equilibrium of dissolved nitrogen in the body It is recom mended that you acclimatize to the new altitude by waiting at least three hours before diving WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE MAXIMUM LIMIT IS REACHED YOU MUST IMMEDIATELY TAKE ACTION TO REDUCE OXYGEN EXPOSURE Failure to take action to reduce oxygen exposure after the warning is given can rapidly increase the risk of oxygen toxicity injury or death Suu
49. imited to chargeable batteries chargers docking stations straps cables and hoses Exclusions and Limitations This Limited Warranty does not cover 1 a normal wear and tear b defects caused by rough handling or c defects or damage caused by misuse contrary to intended or recommended use 2 user manuals or any third party items 3 defects or alleged defects caused by the use with any product accessory software and or service not manufactured or supplied by Suunto 4 replaceable batteries This Limited Warranty is not enforceable if item 1 has been opened beyond intended use 2 has been repaired using unauthorized spare parts modified or repaired by unau thorized Service Center 109 3 serial number has been removed altered or made illegible in any way as determ ined at the sole discretion of Suunto 4 has been exposed to chemicals including but not limited to mosquito repellents Suunto does not warrant that the operation of the Product will be uninterrupted or error free or that the Product will work in combination with any hardware or software provided by a third party Access to Suunto warranty service Register your item at www suunto com register and save the purchase receipt and or registration card For instructions how to obtain warranty service visit www suunto com contact your local authorized Suunto retailer or call Suunto Help Desk 358 2 2841160 national or premium rates may apply Limitatio
50. in order for the computer to calculate the decompression status The dive computer is not intended for use at altitudes greater than 3000 m 10000 ft Failure to select the correct Altitude Adjustment setting or diving above the maximum altitude limit will result in erroneous dive and plan ning data WARNING WARNING WARNING SET THE CORRECT PERSONAL ADJUSTMENT MODE Whenever it is believed that factors that tend to increase the possibility of DCI exist it is recommended that you use this option to make the calculations more conservative Failure to select the correct Personal Adjustment setting will result in erroneous dive and planning data DO NOT EXCEED THE MAXIMUM ASCENT RATE Rapid as cents increase the risk of injury You should always make the Mandatory and Recommended Safety Stops after you have ex ceeded the maximum recommended ascent rate If this Mandatory Safety Stop is not completed the decompression model will pen alize your next dive s YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DIS PLAYED BY THE INSTRUMENT The ascent time will increase if you e remain at depth e ascend slower than 10 m min 33 ft min or e make your decompression stop deeper than at the ceiling These factors will also increase the amount of air required to reach the surface 15 16 WARNING WARNING WARNING WARNING NEVER ASCEND ABOVE THE CEILING You must not ascend above the ceiling during your decompression In order to avo
51. itions are satisfied 7 7 5 PLAN mode The PLAN mode includes a dive planner PLAN Nodec SUUNTO 7 5 1 DIVE PLANNING mode PLAN NoDec The DIVE PLANNING mode displays no decompression times for a new dive taking into account the effects of previous dives No decompression times are calculated by using the bottom gas When entering the PLAN nodec mode the display first briefly shows the remaining desaturation time and no decompression time at the depth of 9 m 30 ft before going into plan mode By pressing the UP DOWN buttons you can scroll the no decompression limits in 3 m 10 ft increments ending at 45 m 150 ft No decompression limits longer than 99 min are displayed as 78 SUUNTO SUUNTO SUUNTO SUUNTO WHEN ENTERING THE PLANNODEC MODE THE DISPLAY FIRST BRIEFLY SHOWS THE REMAINING DESATURATION TIME BEFORE GOING INTO PLAN MODE USE UP AND DOWN BUTTONS TO SCROLL DIFFERENT NO DECOMPRESSION LIMITS NO DECOMPRESSION LIMITS LONGER THAN 99 MINUTES ARE DISPLAYED AS The Planning mode takes into account the following information from previous dives e any calculated residual inert gas e all dive history for the past four days The no decompression times given for different depths will therefore be shorter than before your first fresh dive You can exit the Planning mode by pressing the MODE button B NOTE The Planning mode is disabled in GAUGE mode and in Error mode see Section 5 6 Error conditions
52. ive computer are reduced according to the lower ambient pressure As a result the allowed no decompression stop limits are considerably reduced 10 3 Oxygen exposure The oxygen exposure calculations are based on currently accepted exposure time limit tables and principles In addition to this the dive computer uses several methods to conservatively estimate the oxygen exposure For example e The displayed oxygen exposure calculations are raised to the next higher percent age value e The CNS limits up to1 6 bar are based on 1991 NOAA Diving Manual limits e The OTU monitoring is based on the long term daily tolerance level and the recovery rate is reduced Oxygen related information displayed by the dive computer is also designed to ensure that all warnings and displays occur at the appropriate phases of a dive For example the following information will be shown before and during a dive when the computer is set in mode 105 e The selected O2 on the alternative display e OLF alternative display for either CNS or OTU whichever is larger e Audible alarms are given and the OLF value starts to blink when the 80 and 100 limits are exceeded e Audible alarms are given and the actual PO value blinks when it exceeds the preset limit e In dive planning the maximum depth according to the O and maximum PO selected 106 11 INTELLECTUAL PROPERTY 11 1 Trademark Suunto is a registered trademark of Suunto Oy 11 2
53. l algorithm models the human body by using nine tissue groups In theory the model is accurate if there are more tissue groups but using more than nine tissue groups has no practical significance Tissue calculation aims to model the amount of nitrogen N and helium He saturated in tissues Ongasing and offgasing of saturated gas is modelled using the ideal gas equation In practice this means that the total pressure of the nitrogen and helium tis sues can be higher than the total pressure of the breathing gas even without any ex posure to pressure For example when a diver dives an air dive soon after a demanding trimix dive the residual pressure of helium combined with a high nitrogen content cause the diver a decompression obligation very fast 103 10 2 2 Diver safety and Suunto Technical RGBM model Because any decompression model is purely theoretical and does not monitor the actual body of a diver no decompression model can guarantee the absence of DCI Suunto Technical RGBM model has many features that reduce the risk of DCI The Suunto Technical RGBM algorithm adapts its predictions of both the effects of micro bubble build up and adverse dive profiles in the current dive series The pattern and speed of decompression is adjusted according to the microbubble influence The ad justment is also applied to the maximum combined nitrogen and helium overpressure in each theoretical tissue group To add diver safety offgasing is also s
54. lowed down compared to ongasing and the amount of slowing down depends on the tissue group Experimentally it has been shown that the body adapts to decompression to some degree when diving is constant and frequent Two personal adjustment settings P 1 and P 2 are available for divers who dive constantly and are ready to accept greater personal risk CAUTION Always use the same personal and altitude adjustment settings for the actual dive than for the planning Increasing the personal adjustment setting from the planned setting as well as increasing the altitude adjustment setting can lead to longer decompression times deeper and thus to larger required gas volume You can run out of breathing gas underwater if the personal adjustment setting has been changed after dive planning 104 10 2 3 Altitude diving The atmospheric pressure is lower at high altitudes than at sea level After traveling to a higher altitude you will have additional nitrogen in your body compared to the equilibrium situation at the original altitude This additional nitrogen is released gradually over time and equilibrium is restored It is recommended that you acclimatize to a new altitude by waiting at least three hours before making a dive Before high altitude diving the instrument must be set to the Altitude Adjustment mode to adjust the calculations for the new altitude The maximum partial pressures of nitro gen allowed by the mathematical model of the d
55. m meters feet Celsius Fahrenheit and so on SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4 1 4 Setting the backlight In the Backlight setting mode you are able to turn the backlight ON or OFF and to define how long it stays on for 5 10 20 30 or 60 seconds When the backlight is turned OFF it does not illuminate when an alarm sounds SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4 1 5 Setting the tones In the Tones setting mode you are able to activate or deactivate the tones 24 SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON NOTE When the tones are off there are no audible alarms 4 2 AC water contacts The water and data transfer contact is located on the rear of the case When sub merged the water contact poles are connected by the conductivity of the water and the AC symbol appears on the display The AC text is shown until the water contact deactivates 25 AC APPEARS IN THE TOP RIGHT CORNER OF THE DISPLAY WHEN THE DIVE COMPUTER IS IN CONTACT WITH WATER Contamination or dirt on the water contact may prevent this automatic activation Therefore it is important that the water contact is kept clean The contact can be cleaned with fresh water and a soft brush for example a tooth brush 26 5 BEFORE DIVING Do not attempt to use the dive computer without reading this user s guide i
56. me 3 SUUNTO HELO2 USER INTERFACE 3 1 Navigating in the menus Suunto HelO has four main operating modes 1 TIME mode 2 DIVE mode MIXED GAS GAUGE 3 PLAN mode NODEC 4 MEMORY mode HISTORY LOGBOOK To toggle between the main modes press the MODE button To select a submode in DIVE and MEMORY modes press the UP DOWN buttons TIME DIVE PLAN MEMORY Q LIGHT l Cd S SETTINGS S SETTINGS Me SUB MODES SUB MODE Na SUB MODES Time Gases Mixed gas NoDec Logbook Date Depth Alarm Gauge History Units Dive Time Alarm Backlight Personal Altitude Tones Sample rate Tank Pressure Tank Pressure Alarm Units 19 3 2 Button symbols and functions The table below explains the main functions of the dive computer s buttons The buttons and their use is explained in more detail in the relevant sections of the user s guide Table 3 1 Button symbols and functions MODE Short Switch between main modes Switch from submode to main mode Activate backlight in DIVE mode MODE Long Activate backlight in other modes Activate stopwatch in DIVE mode SELECT Short Select a submode Select and accept settings Select stopwatch to stop or start in DIVE mode Toggle between alternative displays Change submode Increase values 20 Short Toggle between alternative displays Change submode Decrease values Enter Setting mode 21 4 GETTING STARTED To get the most out of your Suunto HelO2 use some time to personaliz
57. n its entirety including all the warnings Make sure that you fully understand the use displays and limitations of the instrument If you have any questions about the manual or the dive computer contact your SUUNTO dealer before diving with the dive computer Always remember that YOU ARE RESPONSIBLE FOR YOUR OWN SAFETY When used properly Suunto HelO2 is an outstanding tool for assisting properly trained certified divers in planning and executing technical dives It is NOT A SUBSTITUTE FOR CERTIFIED SCUBA INSTRUCTION including training in the principles of decom pression and or multi gas diving WARNING Diving with gas mixtures exposes you to risks that are different from those associated with diving with standard air These risks are not obvious and require training to understand and avoid Risks include possible serious injury or death Do not attempt to dive with any gas mix other than standard air without first receiving certified training in this specialty 27 5 1 Planning your dives The Suunto HelO2 is designed for computer aided technical diving You plan and modify your dive profiles with Suunto Dive Planner and download the gases required for the profile to the dive computer During a dive the dive computer alerts you about the gas switches and stops as well as monitors the dive The dive computer records data of the actual dive After a dive you upload the data back to the Suunto Dive Planner for comparing the plan to the
58. n of Liability To the maximum extent permitted by applicable mandatory laws this Limited Warranty is your sole and exclusive remedy and is in lieu of all other warranties expressed or implied 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 of capital cost of any substitute equipment or facilities claims of third parties damage to property 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 Suunto knew of the likelihood of such damages Suunto shall not be liable for delay in rendering warranty service 110 14 DISPOSAL OF THE DEVICE Please dispose of the device in an appropriate way treating it as electronic waste Do not throw it in the garbage If you wish you may return the device to your nearest Suunto representative 111 GLOSSARY Altitude dive Ascent rate ASC RATE Ascent time ASC TIME Ceiling Central nervous system toxicity CNS CNS Compartment DAN DCI DM4 Decompression Decompression range 112 A dive made at an elevation greater than 300 m 1000 ft above sea level The speed at which the diver ascends toward the surface Abbreviation for ascent rate The minimum amount of time needed to reach the surface on a decom pression stop dive Abbre
59. ng that the maximum ascent rate has been exceeded continuously or that the current ascent rate is significantly above the allowed rate 60 Continuous ascent rate violations will result in Mandatory Safety Stops When Recom mended Deep Stop is enabled the length is indicated in seconds ACTIVATED BACKLIGHT ALARM AND A BLINKING ASCENT RATE BAR GRAPH INDICATE YOU ARE ASCENDING FASTER THAN 10 M MIN YOU ARE ADVISED TO MAKE A MANDATORY SAFETY STOP WHEN YOU REACHA DEPTH OF 6 M NORMAL ASCENT RATE WARNING DO NOT EXCEED THE MAXIMUM ASCENT RATE Rapid as cents increase the risk of injury You should always make the Mandatory and Recommended Safety Stops after you have ex ceeded the maximum recommended ascent rate If this Mandatory Safety Stop is not completed the decompression model will penalize your next dive s 6 1 4 Safety Stops A three 3 minute Recommended Safety Stop is prompted after every dive to over 10 m 61 6 1 5 Decompression dives When your NO DEC TIME becomes zero your dive changes into a decompression dive Therefore you must perform one or more decompression stops on your way to the surface The NO DEC TIME on your display will be replaced by an ASC TIME and a CEILING notation will appear An upward pointing arrow will also prompt you to start your ascent If you exceed the no decompression limits on a dive the dive computer will provide the decompression information required for ascent
60. ng the personal altitude adjustments cece eee eee eens 44 5 8 5 Setting the sample rate ccc e cece eee eee een eee eee e eee eeee eens 45 5 8 6 Setting the tank pressure alarm ccc cece eee eee e ee ee eee eeeeeees 45 5 8 7 Setting the tank pressure cece cece cece ee ee eee eeeeeeeeseeeeenees 46 9 8 8 Selling The AP COdE 15 vsdesn cos rine a aE use Roatan tee ST TE EEA 46 5 6 9 Setting The sUMINS s 4 lt cpnatietiae esa e take aetgeGuenaren bens 47 5 9 Activation and DICCNECKS sorei orig eae ne AANE ALa aa TAERE 47 Beh ACCESSING DIVE MOJE x5 teas is wed lee a Sapa tel Boner nle te ereeSew Marana aca 48 50 2 DIVE mode activalo spirit a e a rainy anata et eee dame 48 5 9 3 Battery power indication 0 ccc cece eect eect eeseneeeneesenneenes 50 5 04 DIVING ar ANNUGS 1 465526 temncntcantamecratiaten conve haametetceetancakaeuen 51 5 9 5 Personal adjustments ccc cccee cee eeeeeseeeeeneeseeeseutenaes 52 5 10 Safe y ol wat an a ate oc ac adeaniadaw anc ac neta a dader oie Ed 54 5 10 1 Recommended Safety Stops ccc cece cece eee ee eee e seen ees 54 5 10 2 Mandatory Safety Stops 0 ccc ccc cece cence eee ee eeeeeeeeaaes 55 Deller DESDsSlOPS sven dose seesaw eins a a mae enact one Ae eee eens 57 Ge DIN UNG eit ei cot rune rumah utah anu A EE E wanda eta a A T aint wet 58 6 1 Diving related information 0 ccc cece cece ee
61. nto also recommends that you receive training in Free diving techniques and physiology before conducting breath hold dives No dive computer can replace the need for proper dive training Insufficient or improper training may cause a diver to commit errors that may lead to serious injury or death If there are several divers using the dive computer with wireless transmission always ensure that each diver is using a different code before starting the dive Personal adjustment setting PO P 2 causes a high risk of DCI or other personal injury and death 17 18 WARNING WARNING WARNING NOTE Using the Suunto Dive Planner software is not a substitute for proper dive training Diving with mixed gases has dangers that are not familiar to divers diving with air To dive with trimix triox heliox and nitrox or all of them divers must have specialized training for the type of diving they are doing Always use realistic SAC rates and conservative turn pressures during dive planning Overly optimistic or erroneous gas planning can result in the exhaustion of breathing gas during decompres sion or in a cave or a wreck ENSURE THE WATER RESISTANCE OF THE DEVICE Moisture inside the device or battery compartment will seriously damage the unit Only an authorized SUUNTO dealer or distributor should do service activities It is not possible to change between MIXED GAS and GAUGE modes before the instrument has counted down the no fly ti
62. o transfer data 1 Connect your dive computer to your laptop 2 Download your dives to the DM4 on your laptop 3 Follow the instructions on the DM4 on how to transfer your dives to your Movescount com account 87 8 CARE AND MAINTENANCE OF MY SUUNTO DIVING COM PUTER The SUUNTO dive computer is a sophisticated precision instrument Although it is designed to withstand the rigors of scuba diving you must treat it with the same proper care and caution as any other precision instrument e WATER CONTACTS AND PUSH BUTTONS Contamination or dirt on the water contacts connector or push buttons may prevent the automatic activation of the Dive Mode and cause problems during the data transfer Therefore it is important that the water contacts and push buttons are kept clean If the water contacts are active AC text remains on display or the Dive Mode activates on its own the reason for this is probably contamination or invisible marine growth which may create an electric current between the contacts It is important that the dive computer is carefully washed in fresh water after the day s diving is completed The contacts can be cleaned with fresh water and if necessary a mild detergent and a soft brush Sometimes it might be necessary to remove the instrument from the protective boot for cleaning e CARE OF YOUR DIVE COMPUTER e NEVER try to open the case of the dive computer e Have your dive computer serviced every two years or
63. oughly rinse and dry the computer Open the securing ring of the battery compartment lid by pushing it down and rotating it clockwise You may use a pointed nose pliers or a small screwdriver as an aid in the rotating Put the pliers ends into the holes of the securing ring or the screwdriver onto the side of the right tooth on the ring and turn the ring clockwise Be careful not to damage any of the parts Remove the ring Carefully remove the lid with the beeper attached to it You can remove the lid by pressing with your finger on the outermost edge of the lid while simultaneously pulling with your nail at the opposite side Don t use sharp metal objects as they might damage the O ring or the sealing surfaces Remove the O ring and the battery retainer Carefully remove the battery Do not damage the electrical contacts or the sealing surface Check for any traces of flooding particularly between the beeper and the lid or for any other damage In case of a leak or any other damage bring the dive computer to an authorized SUUNTO dealer or distributor for check and repair Check the condition of the O ring a defective O ring may indicate sealing or other problems Dispose the old O ring even if it seems to be in good condition Check that the battery compartment battery holder and lid are clean Clean with soft cloth if necessary Reinstall the battery retainer in its correct position 11 12 13 14 15 A Check that th
64. play will return the dive number will remain unchanged and the dive time will begin where it left off After five 5 minutes on the surface subsequent dives are by definition repetitive The dive counter displayed in the Planning mode will increment to the next number if another dive is made 19 7 3 Repetitive dive planning The Suunto HelO2 includes a dive planner that allows you to review the no decom pression limits on a subsequent dive taking the residual nitrogen loading of previous dives into consideration The dive plan mode is not meant for technical dive planning which the Suunto Dive Planner PC software is meant for However the dive plan mode can be used to plan short recreational dives The PC software takes the residual inert gas of the previous dives into consideration when the dive profile is downloaded from the dive computer It is also possible to check how the planned air consumption corresponded to the actual air consumption The DIVE PLANNING mode is explained in Section 7 5 1 DIVE PLANNING mode PLAN NoDec 7 4 Flying after diving In the DIVE mode the no fly time is displayed in the center window next to the airplane image In the TIME mode the airplane image is shown in the top left corner The no fly time and the surface time are shown in the TIME mode as well Flying or traveling to a higher altitude should be avoided at any time when the computer is counting down the no fly time The no fly time is always
65. rap and your wrist Shorten the strap by cutting it if you do not expect to need the extra length 89 MAINTENANCE The instrument should be soaked thoroughly rinsed with fresh water then dried with a soft towel after each dive Make sure that all salt crystals and sand particles have been flushed out Check the display for possible moisture or water DO NOT use the dive computer if you detect any moisture or water inside Contact an au thorized Suunto dealer for battery replacement or other service CAUTION e Do not use compressed air to blow water off the unit e Do not use solvents or other cleaning fluids that might cause damage e Do not test or use the dive computer in pressurized air WATER RESISTANCE INSPECTION The water resistance of the unit must be checked after replacing the battery or after other service operations The check requires special equipment and training You must frequently check the display for any sign of leaks If you find moisture inside your dive computer there is a leak A leak must be corrected without delay as moisture will seriously damage the unit even beyond repair SUUNTO does not take any responsibility for damage caused by moisture in the dive computer unless the instructions of this manual are carefully followed In the event of a leak immediately take the dive computer to an authorized SUUNTO dealer or distributor FAQs For more information on service please refer to FAQs on www suunto com
66. ro When the ceiling moves upwards you can ascend to the new ceiling You may surface only after the ASC TIME and CEILING labels have disappeared which means that the decom pression stop and any Mandatory Safety Stop have been completed You are advised however to stay until the STOP sign has also disappeared This indicates that the three 3 minute Recommended Safety Stop has also been completed Display above the ceiling If you ascend above the ceiling during a decompression stop a downward pointing arrow will appear and a continuous beeping starts 66 SUUNTO DECOMPRESSION DIVE ABOVE CEILING NOTE DOWNWARD POINTING ARROW ER WARNING AND ALARM YOU SHOULD IMMEDIATLY WITHIN 3 MINUTES DESCEND TO OR BELOW CEILING In addition an Error warning Er reminds you that you have only three 3 minutes to correct the situation You must immediately descend to or below the ceiling If you continue to violate the decompression the dive computer will go into a permanent Error Mode In this mode the instrument can only be used as a depth gauge and timer You must not dive again for at least 48 hours refer to Section 5 6 Error conditions 6 2 Diving in MIXED GAS mode The MIXED mode is the first dive mode available in Suunto HelO2 The mode is used when diving with air or with oxygen or helium enriched gas mixes 6 2 1 Before diving in the MIXED GAS mode If set to the MIXED GAS mode the correct oxygen and helium percentag
67. rstand dive specific terminology 1 1 Using HelO2 with Dive Manager and Dive Planner Suunto HelO2 is designed to be used together with Suunto Dive Planner and Suunto Dive Manager They both are PC programs for planning and managing your dive data While HelO2 is used during a dive the Dive Manager is used for uploading the dive data to your PC and the Dive Planner for planning any subsequent dives using the uploaded dive data as a basis 2 WARNINGS CAUTIONS AND NOTES Throughout this user s guide important safety icons are displayed Three classifications are used to separate these icons by their order of importance WARNING A CAUTION NOTE is used in connection with a procedure or situation that may result in serious injury or death is used in connection with a procedure or situation that will result in damage to the device is used to emphasize important information Before you go on to read the user s guide itself it is extremely important that you read the following warnings These warnings are intended to maximize your safety while using Suunto HelO2 and must not be ignored WARNING WARNING 10 YOU MUST READ the leaflet and user guide for your dive com puter Failure to do so may lead to improper use serious injury or death ALLERGIC REACTIONS OR SKIN IRRITATIONS MAY OCCUR WHEN PRODUCT IS IN CONTACT WITH SKIN EVEN THOUGH OUR PRODUCTS COMPLY WITH INDUSTRY STANDARDS IN SUCH EVENT STOP USE IMMEDIATEL
68. s the dive computer will go back to the dive display without changing the gas mix Upon as cent the computer prompts you to change gas when the PO level you have set for the next mix allows a gas change The prompt is an audible 3 beeps and the current O or O He mix Starts to blink 6 3 Diving in the GAUGE mode If set to the GAUGE mode the dive computer can be used as a bottom timer In the GAUGE mode the total dive time is always displayed in minutes in the lower right corner In addition a Dive Timer in the center window displays time in minutes and seconds The center window Dive Timer is activated at the start of the dive and it can be reset during the dive and used as a stopwatch by pressing the SELECT button 72 SUUNTO SUUNTO SUUNTO SUUNTO BY PRESSING THE SELECT BUTTON DURING A DIVE ABOOKMARK IS WRITTEN IN THE PROFILE MEMORY THE DIVE TIMER IS RESET AND THE PREVIOUSLY TIMED INTERVAL IS DISPLAYED BELOW Tank pressure if enabled is also displayed during the dive Z NOTE The GAUGE mode does not provide decompression information NOTE If you dive with the GAUGE mode it is not possible to change between the modes before the no fly time 48 h has counted down 73 7 AFTER DIVING Once back at the surface Suunto HelO continues to provide post dive safety inform ation and alarms Calculations to enable repetitive dive planning also help to maximize diver safety Table 7 1 Alarms A Diver Attention
69. s the name implies is recom mended If it is ignored there is no penalty applied to the following surface intervals and dives 5 10 2 Mandatory Safety Stops When the ascent rate exceeds 10 m 33 ft per minute continuously for more than five 5 seconds the microbubble build up is predicted to be more than is allowed for in the decompression model The Suunto RGBM calculation model responds to this by adding a Mandatory Safety Stop to the dive The time of this Mandatory Safety Stop depends on the severity of the ascent rate excess The STOP sign is shown in the display and when you reach the depth zone between 6 mand 3 m 20 ft and 10 ft the CEILING label ceiling depth and the calculated Safety Stop time also appear in the display Wait until the Mandatory Safety Stop warning disappears The total length of the Mandatory Safety Stop time depends on the seri ousness of the ascent rate violation 55 SUUNTO WHEN CEILING AND STOP ARE DISPLAYED MAKE A ONE MINUTE MANDATORY SAFETY STOP IN THE DEPTH ZONE BETWEEN 6 MAND 3 M You must not ascend shallower than 3 m 10 ft with the Mandatory Safety Stop warning on If you ascend above the Mandatory Safety Stop ceiling a downward pointing arrow will appear and a continuous beeping starts You should immediately descend to or below the Mandatory Safety Stop ceiling depth If you correct this situation at any time during the dive there are no effects on the decompression calculations for f
70. s the optimum decompression stop zone It is the zone between the minimum ceiling and 1 2 m 4 ft below the minimum ceiling e The floor is the deepest depth at which the decompression stop time will not in crease Decompression will start when you pass this depth during your ascent e The decompression range is the depth range between the ceiling and floor Within this range decompression takes place However it is important to remember that the decompression will be very slow at or close to the floor 63 Vv cemING y 3m 10ft A 6m 18ft A FLOOR The depth of the ceiling and floor depends on your dive profile The ceiling depth will be fairly shallow when you enter the decompression mode but if you remain at depth it will move downward and the ascent time will increase Likewise the floor and ceiling may change upwards while you are decompressing When conditions are rough it may be difficult to maintain a constant depth near the surface In such cases it is more manageable to maintain an additional distance below the ceiling to ensure that the waves do not lift you above the ceiling Suunto recom mends that decompression takes place deeper than 4 m 13 ft even if the indicated ceiling is shallower NOTE It will take more time and more gas to decompress below the ceiling than at the ceiling WARNING NEVER ASCEND ABOVE THE CEILING You must not ascend above the ceiling during your decompression In order to avoid
71. spaced repetitive diving e Reacting to a dive deeper than the previous dive e Adapting to rapid ascents which produce high microbubble silent bubble build up e Incorporating consistency with real physical laws for gas kinetics 10 2 1 Suunto Technical RGBM decompression model Suunto s decompression model development originates from the 1980s when Suunto implemented BuhImann s model based on M values in Suunto SME Since then re search and development has been ongoing with the help of external and internal ex perts In the late 1990s Suunto implemented Dr Bruce Wienke s RGBM bubble model to work with the M model The first commercial products with the feature were Vyper and Stinger With these products the improvement of diver safety was significant Now Suunto has taken another leap in decompression modeling by introducing Suunto Technical RGBM decompression model with He tissues 102 Suunto Technical RGBM model is a modified version of the M value model Calculation of the M value model can be found in common dive literature Modifications have been made to have the model follow RGBM theory as closely as possible The modifications have been conducted with the help of Dr Bruce Wienke Functionality of Suunto Technical RGBM has been validated and verified to the depth of 120 m 393 ft with hundreds of test dives both in the field and in laboratory The algorithm should not be used in deeper depths than the verified depth Suunto technica
72. starts sending pressure data together with a code number During the pairing procedure the Suunto dive computersuunto HelO2 stores the code number and starts displaying pressure values that are received with that code This coding procedure prevents data mix up from other divers also using a Suunto HelO2 transmitter When there is no stored code the Suunto HelO2 displays cd and receives data with lowered sensitivity from a very short distance only By taking the Suunto HelO2 unit close to the transmitter it will store the received code and start receiving with full sensitivity and display data received with this code only The code is stored until you reset it manually 37 NOTE The pairing procedure only needs to performed once before the first use and you do not need to repair it To pair the transmitter and the Suunto HelO2 dive computer 1 Ensure that the transmitter is properly attached to the regulator s HP port and that the regulator is properly attached to the cylinder 2 Ensure that the Suunto HelO2 is turned on and that the wireless integration is enabled in the Suunto HelO2 settings HP set ON refer to Section 5 8 8 Setting the HP code The HelO2 should display cd in the lower left corner of the al ternative display 3 Slowly open the cylinder valve fully and pressurize the system The transmitter starts transmitting when the pressure exceeds 15 bar 300 psi 4 Take the Suunto HelO2 unit close to the
73. strument be stored in a dry place at room temperature NOTE Do not leave the dive computer in direct sunlight Tissue calculation model Suunto RGBM algorithm developed by Suunto and Bruce R Wienke BSc MSc PhD 9 tissue compartments Tissue compartment halftimes 2 5 5 10 20 40 80 120 240 and 480 minutes on gassing The off gassing halftimes are slowed down Helium halftimes 1 2 3 5 7 5 15 30 45 90 181 minutes on gassing The off gassing halftimes are slowed down 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 EAN and oxygen exposure calculations are based on recommendations by R W Hamilton PhD and currently accepted exposure time limit tables and prin ciples Battery One 3 V lithium battery CR 2450 Battery storage time shelf life Up to three years Replacement Every three years or more often depending on dive activity Life expectancy at 20 C 68 F e 100 dives year gt 1 year 100 Transmitter One 3V lithium battery 1 2AA K5546 and O ring 2 00 mm x 2 00 mm K5538 Battery storage time shelf life Up to three years Replacement Every two years or more often depending on dive activity Life expectancy at 20 C 68 F e Odives year gt 3 years e 100 dives year gt 2 years e 400 dives year gt 1 year The following conditions have an effect on the expected battery lifetime
74. ted Any time the Suunto HelO2 receives an appropriate signal the wireless transmitter indicator is displayed in the lower left corner Table 5 3 Pressure transmission related displays Display indication OSS Cd Set Code No code stored Suunto HelO2 ready for pairing with A transmitter a Pressure reading over 360 bar 5220 psi 39 40 Pressure reading has not been updated for more than one minute The latest valid pressure reading is displayed intermittently After five minutes FAIL is displayed intermittently with Transmitter is out of range in power saving mode or on another channel Activate the transmitter by breathing off the regulator and recode the wrist if necessary Pairing has not been conducted between the dive computer and the transmitter before the start of the dive No cylinder data avail 5 8 MIXED GAS DIVE mode settings Suunto HelO2 has several user definable functions as well as depth and time related alarms that you can set according to your personal preferences The DIVE mode settings are dependent on the dive submode chosen MIXED GAS GAUGE so that for example gas mix settings are only available in the MIXED GAS submode With Suunto HelO2 most of the settings are planned with the Suunto Dive Planner and downloaded to the dive computer If necessary they can be changed manually The figure below shows how to enter the DIVE mode settings menu R SUUNTO SUUNTO SUUNTO SUUN
75. ter reaching the surface do not dive for at least 24 hours In the event that the dive computer functions but a required gas is not available you can use your diving partner s gas which is set as a secondary gas on your dive com puter Displayed ASC TIME is not correct but the decompressions are calculated correctly In the event that a required gas is not available at all decompress for as long as you can by using the next most suitable gas that has the highest oxygen content Notice that the oxygen content should be low enough to not violate the maximum partial pressure of oxygen PO 30 5 4 Dive computer limitations While the dive computer is based on current decompression research and technology you must realize that the computer cannot monitor the actual physiological functions of an individual diver All decompression schedules currently known to the authors including the U S Navy Tables are based on theoretical mathematical models which are intended to serve as a guide to reduce the probability of decompression illness 5 5 Audible and visual alarms The dive computer has audible and visual alarms that advise when important limits are approached or that prompt you to acknowledge preset alarms The table below describes the different alarms and their meanings The visual information on the dive computer display is shown during the alarm breaks in order to save battery Table 5 1 Audible and visual alarm types
76. the pressure transmitter has been properly attached and the cylinder valve is open the transmitter and the wrist unit have been properly paired on a suitable code the pressure transmitter is working wireless transmitter indicator blinks cylinder pressure is displayed and that there is no low battery warning displayed you have enough gas for your planned dive You should also check the pressure reading against your back up pressure gauge And if set to MIXED GAS mode ensure that 49 e the correct number of mixes is set and that the oxygen and helium percentages are adjusted according to the measured gas blends in your cylinders e the oxygen partial pressure limits are set correctly For more information on the MIXED GAS mode please refer to Section 6 2 Diving in MIXED GAS mode The dive computer is now ready for diving 5 9 3 Battery power indication Temperature or internal oxidation of the battery affect the battery voltage If the instru ment is stored for a long period or used in cold temperatures the low battery warning may be displayed even though the battery has enough capacity In these cases re enter DIVE mode to receive the battery power indication After the battery check the low battery warning is indicated by the battery symbol SUUNTO SUUNTO SUUNTO If the battery symbol is displayed in the Surface mode or if the display is faded or weak the battery may be too low to operate the dive computer and battery
77. ther The depth range can be set from 3 m to 120 m 10 ft to 394 ft 5 8 3 Setting the dive time alarm The Dive Time Alarm setting can be activated and used for several purposes to add to your diving safety SUUNTO SUUNTO a ey i Fl aleu ADJUST WITH UP AND zen Hi DOWN BUTTONS ACCEPT at WITH SELECT BUTTON NOTE With a range of 1 999 minutes the alarm can be set to your planned bottom time for example 5 8 4 Setting the personal altitude adjustments The current Altitude and Personal Adjustment settings are displayed in the startup screen when entering the DIVE mode If the mode does not match the altitude or personal conditions refer to Section 5 9 4 Diving at altitude and Section 5 9 5 Per sonal adjustments it is imperative that you enter the correct selection before diving Use Altitude Adjustment to select the correct altitude and use Personal Adjustment to add an extra level of conservatism or aggressiveness 44 SUUNTO 4 Altitude f SUUNTO t Personal m y Altitude O ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 8 5 Setting the sample rate The Sample Rate setting controls how often the depth tank pressure if enabled and water temperature is stored in the memory You can set the dive profile sample rate to 10 20 30 or 60 seconds The factory default setting is 20 seconds SUUNTO SUUNTO ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELEC
78. tional cable required e depth profile of the dive dive time preceding surface interval time dive number dive start time year month day and time dive computer settings oxygen percentage settings and maximum OLF in the MIXED GAS mode tissue calculation data real time water temperature tank pressure data if enabled additional dive information for example SLOW and Mandatory Safety Stop viola tions Diver Attention Symbol Bookmark Surfaced Mark Decompression Stop Mark and Ceiling Error Mark e dive computer serial number e personal information 30 characters 86 By using the DM4 you are able to enter setup options such as e input a personal 30 character field into the Suunto instrument e reset the Scuba History s maximum depth to zero e reset all Free Dive History e manually add comments multimedia and other personal information to the PC based dive data files 7 9 Movescount Movescount is an online sports community that offers you a rich set of tools to manage all you sports and create engaging stories about your diving experiences Movescount offers you new ways to get inspired and share your best dives with other community members To connect to Movescount 1 Goto www movescount com 2 Register and create your free Movescount account 3 Download and install the Suunto DM4 with Movescount software from the Movescount com website if you do not already have the DM4 installed on your laptop T
79. uture dives SUUNTO WHEN CEILING AND STOP ARE DISPLAYED IMMEDIATELY WITHIN 3 MINUTES DESCEND TO OR BELOW CEILING If you continue to violate the Mandatory Safety Stop the tissue calculation model is affected and the dive computer shortens the available no decompression time for your next dive In this situation it is recommended that you prolong your surface interval time before your next dive 56 5 11 Deep stops The most significant factor limiting the ascent is the ceiling depth It is the maximum depth a diver can ascend to before tissue pressures have decreased low enough In addition separate safety stops are used Their purpose is to increase the safety margin even if decreasing the tissue pressures does not require them Such stops are safety stop when surfacing and deep stops According to UHMS deep stops are stops that occur deeper than the traditional de compression model suggests The purpose of deep stops is to slow down a long continuous ascent and minimize microbubble formation and excitation While the Suunto Technical RGBM model is based on M values the use of deep stops brings the model closer to the full RGBM model The way of implementing deep stops is conducted by Dr Bruce Wienke If deep stop is broken it does not cause the dive computer to go into error mode However there is penalty applied to the following decompressions SUUNTO SUUNTO DURING DESCENT DURING ASCENT YOU YOU ARE SHOWN ARE ADV
80. uunto Technical RGBM model 104 10 23 Altitude diving peer nen en ee nee eae 105 10 37 Oxygen CXPOSUIS cissi aa a ar 105 TINTELLEC TUAL PROPER emeki e bania teat etumarchomnanueke eeteeteumades 107 Teie RAG CM alk reiki Aneren macdratedseseisades DA a OREA RAE RNAS 107 Mle OPV MOM aa i E A EN A ONN O 107 Tho Patent NOCE aras TE a E E T EA 107 12 DISCLAIMERS srar a E a A r E aN A ETA N 108 g e EE O aoa Rei heated cen E er E S E E hic aetna E ena E A AT 108 T22 EN T331 Senn eE A E E ETEN 108 T23 EN 290 AF IOR eee ere A 108 13 SUUNTO LIMITED WARRANTY gccsscc2s5 chanieaeededesiedateiereaneenasdaneas 109 6 14 DISPOSAL OF THE DEVICE GLOSSARY dirid aa 1 WELCOME TO THE WORLD OF SUUNTO DIVE COMPUTERS Suunto HelO2 wristop dive computer is designed to help you get the most out of your diving With easy to use PC dive planner and gas switching Suunto HelO2 simplifies your diving experience because all the information you need relating to depth time tank pressure and decompression status is available on one easy to read screen The Suunto HelO2 User s Guide contains vitally important information which enables you to become familiar with your Suunto wristop dive computer To understand the use displays and limitations of the instrument before using it please read this user s guide carefully and save it for further reference Note also that a glossary is included at the back of the user s guide to help you unde
81. viation for ascent time On a decompression stop dive the shallowest depth to which a diver may ascend based on computed nitrogen load Toxicity caused by oxygen Can cause a variety of neurological symptoms The most important of which is an epileptic like convulsion which can cause a diver to drown Abbreviation for central nervous system toxicity Central nervous system toxicity limit fraction Also note Oxygen Limit Fraction See Tissue group Abbreviation for Divers Alert Network Abbreviation for decompression illness Suunto DM4 with Movescount a software for managing your dives Time spent at a decompression stop or range before surfacing to allow absorbed nitrogen to escape naturally from tissues On a decompression stop dive the depth range between the floor and the ceiling within which a diver must stop for some time during ascent Decompression illness Dive series Dive time EAD EAN Enriched air nitrox Equivalent air depth Floor Half time He Heliox MOD Any of a variety of maladies resulting either directly or indirectly from the formation of nitrogen bubbles in tissues or body fluids as a result of inad equately controlled decompression Commonly called the bends or DCI A group of repetitive dives between which the dive computer indicates some nitrogen loading is present When nitrogen loading reaches zero the dive computer deactivates Elapsed time between leaving the surface to

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