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Suunto DX User's Guide

1. 0ccccceeeeeeeeeeeaeeees 101 7 5 1 Dive numbering shown during dive planning ooocoooomo o 103 7 6 MEMORY mode i xsccocarnecwSedentteaguaneoreaianenarartadaxeend ct tee abaacauees 103 7 6 1 Dive logbook MEM Logbook cccee eee eee eee eeeeeeeeeeeeas 104 OZ DIVE ISO A wasn eae ES 107 EA e SnU DMA a E AA ERA tana etd ine eels 107 HS WOVESCOUN a adds 108 8 CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER 110 BATTERY REPLACEMENT beis 113 9 1 Computer battery replacement 0 cece ccc c cece eee e eee eneeenes 113 9 2 Wireless transmitter battery replacement cc cece eee nnne 114 9 21 Transmitter batery KIL cutus ak tordo ario 114 9 2 2 Required tools 0 cece cece cece cece eee e eee seeeeensueseuesuesees 114 9 2 3 Replacing the transmitter battery 0 ccc cece ene e eee eens 114 10 TECANICALDATA 0 aa 116 101 Technical SpecificalOnS a 116 10 2 Suunto decompression model development ooooccccccccccccocncooo 120 TORA Diver satel A AS ad 121 10 22 Ni SAI VAG AA eo cana teks S a a 122 10 37 Oxyde expos US sia tada 122 10 4 Isobaric counterdiffusion ICD 0c c cece cece eee ee eee eee eeaee eens 124 AT INTELEECTUAL PROPER sara divin in 125 Tele Nk PAC NM a re sa 125 dE AAA OPV y 1 rencie ieina testy acted lake Snes ia Geel accented trae S O AS 125 los PatentmotlCS reenen prada asii 125 12 DISCLAIMERS a
2. 64 5 8 11 Setting the air time In the Air Time setting mode the remaining air time display can be set ON or OFF depending on whether estimated remaining air time display is used or not Air Time can only be displayed when the wireless tank pressure transmitter is in use ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 9 Before diving in the MIXED or CCR mode If set to the MIXED or CCR mode the correct oxygen and helium percentage of the gas in your cylinder s 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 If you want to adjust the computer to provide more conservative calculations use the per sonal adjustment feature to affect decompression calculations or reduce the PO setting to affect oxygen exposure according to the entered O and PO values Calculations based on nitrox use result in longer no decompression times and shal lower maximum depths than diving with air 65 BA NOTE As a safety precaution the oxygen calculations in the dive com puter are made with an oxygen percentage of 1 set 05 When the dive computer is set in MIXED mode the Dive Planning mode calcula
3. Metric Imperial e the instrument displays the correct temperature and depth 0 0 m O ft e the alarm beeps If the optional wireless pressure transmitter is used ensure that e the pressure transmitter has been properly attached and the cylinder valve is open e the transmitter and the wrist unit have been properly paired on a suitable code 68 e the pressure transmitter is working flash symbol blinks cylinder pressure is dis played and that there is no low battery warning displayed e you have enough air for your planned dive You should also check the pressure reading against your back up pressure gauge And if set to MIXED or CCR mode ensure that 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 and CCR modes please refer to Section 6 2 Diving in MIXED or CCR mode The dive computer is now ready for diving 5 10 2 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 sym
4. it does not cause the dive computer to go into an error Er mode However a penalty time may be added to the subsequent decompression 76 NOTE With Deep Stops ON the Recommended Safety Stops will still be activated at the end of the dive TT 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 in the AIR mode DIVE Air This section contains information on diving with standard air To activate the DIVE Air mode please refer to Section 5 7 Accessing DIVE mode DIVE HAS JUST BEGUN AND AVAILABLE NO DECOMPRESSION TIME IS OVER 99 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 78 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
5. 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 seconds 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 a low priority alarm followed by the Change gas beep sounded once The Gas mix 0 He value blinks 6 2 4 Set point and diluent gas mix change in CCR mode The Suunto DX allows both set point as well as diluent and gas mix changes to enabled gas mixes during the dive Enter the selection menu during the dive by long pressing UP 93 set Point ENTER THE SELECTION MENU BY LONG PRESSING UP BUTTON THEN SCROLL BY PRESSING UP BUTTON S q 155 set Point ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON Set Point Selected 94 Diluent change during dive CHANGING DILUENT LONG PRESS UP THEN ENTER THE CC DILUENT MENU SCROLL THROUGH ENABLED DILUENTS BY PRESSING UP BUTTON SELECT NEW DILUENT BY PRESSING THE SELECT BUTTON Enabled open circuit gas changes are made in the same way and at the same time the CC dive changes to an open circuit OC dive This feature is useful in bail out situation ENTER THE SEL
6. 1 5 Setting the units In the Units setting mode you are able to choose whether the units are displayed in either the metric or imperial system meters feet Celsius Fahrenheit and so on 27 ADJUST WITH UP AND q z DOWN BUTTONS ACCEPT Metric E ij WITH SELECT BUTTON Units 4 1 6 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 NOTE When the backlight is turned OFF it does not illuminate when an alarm sounds ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4 1 7 Setting the contrast In the Contrast setting mode you are able to set the contrast of the display the value range is between 0 and 10 28 fi ADJUST WITH UP AND as a H LG i h DOWN BUTTONS ACCEPT WITH SELECT BUTTON Contrast 4 1 8 Setting the tones In the Tones setting mode you are able to activate or deactivate the tones ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON NOTE When the tones are off there are no audible alarms 4 2 Stopwatch The Stopwatch function in Suunto DX measures elapsed and split times A separate stopwatch dive timer can also be used in the DIVE mode For more in formation refer to Section 6 1 6 Stopwatch Timer 29 USE DOWN BUTTON TO START STOPWATCH AND TAKE A SPLIT TIME THE UP BUTTON STOPS THE STOPWATCH IF YOU HAVE TAKEN SPLIT
7. 13 ft even if the indicated ceiling is shallower NOTE It will take more time and more breathing gas to decompress be low 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 doing so by accident you should stay somewhat below the ceiling 87 Display below the floor The blinking ASC TIME sign and an upward pointing arrow indicate that you are below the floor You should start your ascent immediately 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 without Deep Stops below the floor UPWARD POINTING ARROW BLINKING ASC TIME AND AN ALARM TELL YOU TO ASCEND MINIMUM TOTAL ASCENT TIME INCLUDING SAFETY STOP IS 9 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 UPWARD POINTING ARROW HAS DISAPPEARED AND ASC TIME LABEL HAS STOPPED BLINKING MEANING YOU ARE IN THE DECOMPRESSION RANGE Decompression will now begin but is very slow Therefore you should continue your ascent 88 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 i
8. 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 15 ZA WARNING A WARNING A WARNING A WARNING A WARNING 16 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 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 DCS or other personal injury and death Using the Suunto Dive Planner software is not a substitute for proper dive training Diving with mixed gases has dangers that are not f
9. TIMES YOU CAN SCROLL THEM BY SHORT PRESSING THE UP BUTTON LONG PRESSING UP RESETS THE STOPWATCH 4 3 AC water contacts The water and data transfer contact is located on the side 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 AC APPEARS IN THE TOP RIGHT CORNER OF THE DISPLAY WHEN THE DIVE COMPUTER IS IN CONTACT WITH WATER THIS ALSO ACTIVATES THE DIVE MODE 30 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 DEPTH SENSOR WATER DATA SENSOR NOTE Water or moisture build up around the water contact may cause the contact to activate automatically This can happen for ex ample when washing your hands or sweating If the water contact activates in the TIME mode the AC symbol will appear on the display and will be shown until the water contact deactivates To save battery power you should deactivate the water contact by cleaning it and or drying it with a soft towel 4 4 Learning how to use your compass Suunto DX integrates a digital compass that can be used both while diving and and on the surface and can be accessed by long pressing the SELECT button 31 IF ACCESSE
10. as a bar graph on the right side e the Diver Attention Symbol if surface interval should be prolonged see Table 7 1 Alarms DIVE DISPLAY PRESENT DEPTH IS 15 M NO DECOMPRESSION STOP TIME LIMIT 46 MIN MAXIMUM DEPTH DURING THIS DIVE WAS 21 5 M ELAPSED DIVE TIME 22 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 79 DOWN BUTTON TOGGLES BETWEEN MAXIMUM DEPTH CURRENT TIME AND TANK PRESSURE UP BUTTON TOGGLES BETWEEN DIVE TIME AND WATER TEMPERATURE In addition with the optional wireless transmission enabled e the Remaining Air time in the left center window indicated as AIR TIME Air Time must be set ON 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 software The bookmark logs the depth time and water temperature as well as compass heading if the compass has been enabled and tank pressure when available 80 To make a bookmark in the profile memory during a dive
11. as this may break the cover and cause flooding of the unit If your cylinder falls down with the transmitter attached to the regulator first stage ensure that the transmitter has not been damaged before diving with it It is not possible to change to AIR mode after a dive in MIXED or CCR mode before the No fly time has elapsed When planning both air and mixed gas CCR dives during the same dive series you should set the instrument in MIXED mode and modify the gas mix accordingly In GAUGE mode the no fly time is always 48 hours 3 SUUNTO USER INTERFACE Daily Alarm Indicator Dive Alarm Indicator No Fly Icon Safety Stop Indicator Tank Pressure Bar Graph Wireless Transmission Indicator Date Dual Time Maximum Depth O He Mixed and CCR Mode Time Tank Pressure NOTE Present Depth Active Water Contact Indicator Diver Attention Symbol Current Time Display Mode Indicator No Decompression Time Total Ascent Time Ceiling Depth Remaining Air Time Safety Deep Stop Time Surface Interval Time No Fly Time Compass Display Tissue Saturation Graph Set Point CCR Mode Ascent Rate Bar Graph Seconds Display Stopwatch Weekday Dive Time Temperature PO Mixed and CCR Mode OLF Mixed and CCR Mode Low Battery Warning If no button is pressed for 5 minutes the dive computer beeps and returns to the TIME mode automatically 19 3 1 Navigating in the menus Suunto DX has four main
12. battery kit 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 9 2 2 Required tools e A Phillips head screwdriver e Soft cloth for cleaning 9 2 3 Replacing the transmitter battery To change the transmitter battery 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 MAI 114 10 11 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
13. between alternative displays Change submode Increase values UP Long Activate gas switching in MIXED and CCR mode View gas selection in SURFACE mode MIXED and CCR only View set points and switch depths in SURFACE mode CCR only DOWN Short Toggle between alternative displays Change submode Decrease values DOWN Long Enter Setting mode Toggle between ceiling and remaining air time display 23 4 GETTING STARTED To get the most out of your Suunto DX use some time to personalize it and really make it YOUR computer Set the correct time and date as well as the alarms and tones unit and backlight settings Then calibrate and test the compass function Suunto DX is a very user friendly dive computer and you will quickly become familiar 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 DX is to set the TIME mode shortcuts the time alarm dual time date units backlight contrast and tones The figure below shows how to toggle between different shortcuts in the TIME mode BETWEEN DIVES YOU CAN CHECK YOUR SURFACE INTERVAL TIME FROM THE TIME MODE SHORTCUTS NOTE The seconds display reverts to date display after 5 minutes in order to save battery power NOTE The display is illuminated by holding down the MODE button for more than 2 seconds Now that after you
14. event of a leak immediately take the dive computer to an authorized SUUNTO service center FAQs For more information on service please refer to FAQs on www suunto com 112 9 BATTERY REPLACEMENT 9 1 Computer battery replacement NOTE It is advisable to contact an authorized Suunto service center 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 ZN CAUTION Defects caused by improper battery installation are not covered by the warranty 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 even 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 and CCR mode the gas settings also revert back to default settings Diluent 1 Mix1 21 O 1 4 bar POs Diluent 2 Diluent 3 Mix2 Mix8 OFF 113 9 2 Wireless transmitter battery replacement NOTE It is advisable to contact an authorized Suunto service center 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 2 1 Transmitter
15. know how to toggle between the shortcuts you can start to set them The figure below shows how to enter the TIME Settings menu USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN ALARM TIME DUAL TIME DATE UNITS CONTRAST TONES AND VERSION 25 4 1 1 Setting the alarm The dive computer has a daily alarm function The alarm can be set to be activated only once on weekdays or every day When the daily alarm activates the screen blinks and the alarm sounds for 60 seconds Press any button to stop the alarm Alarm Alarm Week Days rman wuwu ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4 1 2 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 Time ANIME Time p ADJUST WITH UP AND weeos PINO den E DOWN BUTTONS ACCEPT WITH SELECT BUTTON 26 4 1 3 Setting the dual time In the Dual Time setting mode you are able to select the hour and minute of a dual time which is useful when traveling to a different time zone ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4 1 4 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 ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4
16. no fly time is 48 hours The Divers Alert Network DAN recommends the following on no fly times e 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 100 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 sickness 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 exceptions 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 conditions are satisfied 7 5 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 When entering the DIVE PLANNI
17. 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 display 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 99 7 3 Repetitive dive planning The Suunto DX includes a dive planner that allows you to review the no decompression limits on a subsequent dive taking the residual inert gas loading of previous dives into consideration The DIVE PLANNING mode is explained in Section 7 5 DIVE PLAN NING 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 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 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 the
18. operating modes TIME mode TIME DIVE mode DIVE PLAN mode PLAN and MEMORY mode MEM It also has a COMPASS submode which can be activated from either TIME or DIVE modes To toggle between the main modes press the MODE button To select a submode in DIVE and MEM modes press the UP DOWN buttons 20 SETTINGS Alarm Time Dual Time Date Units Backlight Contrast Tones SETTINGS CC Gases OC Gases Gases Set Point Personal Altitude Tank Press Pairing Tank Press Alarm Depth Alarm Dive Time Alarm Sample Rate Deepstop Air Time COMPASS NEE ir i Pula of 2 WAX DIVETIME SETTINGS Calibrate Declination Timeout DIVE PLAN iJ ac u ae Sho cmp M SUB MODES Air Mixed CCR Gauge off MEM Surf t 0 11 AUG 14 7 m bar orr SUB MODES Logbook History 21 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 SELECT Activate compass in TIME and DIVE modes 22 a Short Toggle
19. press the SELECT button A brief confirmation will be given l Fac a Jm A A BOOKMARK IS PLACED EDOKMARK IN THE PROFILE MEMORY A DURING A DIVE BY PRESSING THE SELECT BUTTON 6 1 3 Tank pressure data When using the optional wireless pressure transmitter the pressure of your scuba cylinder in bars or psi is shown digitally in the lower left corner of the alternative dis play Whenever you start a dive the remaining air time calculation begins After 30 60 seconds sometimes more depending on your air consumption the first estimation of remaining air time is shown in the left center window of the display The calculation is always based on the actual pressure drop in your cylinder and automatically adapts to your cylinder size and current air consumption CURRENT TANK PRESSURE IS 165 BAR AND THE REMAINING AIR TIME IS 52 MINUTES 81 The change in your air consumption is based on constant one second interval pressure measurements over 30 60 second periods An increase in air consumption influences the remaining air time rapidly while a drop in air consumption increases the air time slowly In this way an over optimistic air time estimation caused by a temporary drop in air consumption is avoided The remaining air time calculation includes a 35 bar 500 psi safety reserve This means that when the instrument shows the air time to be zero there is still about 35 bar 500 psi of pressure left in your cylinder de
20. 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 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 DCS 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 descend and returning to the surface at the end of a dive Delta P describing the Cylinder Pressure drop during the dive the differ ence in cylinder pressure between the beginning and 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 131 Half time He HP MOD Multi level dive Nitrox NOAA No decompression time No decompression dive NO DEC TIME OC OEA EAN EANx OLF OTU 132 After a change in ambient pressure the amount of time re
21. with trimix divers when they change to a deco gas containing markedly less helium and more nitrogen than the previous mix To avoid ICD it is advisable to carefully plan the gas changes so that the nitrogen percentage does not drastically increase with each change 124 11 INTELLECTUAL PROPERTY 11 1 Trademark Suunto and Suunto Fused RGBM are registered trademarks of Suunto Oy 11 2 Copyright Suunto Oy 10 2012 All rights reserved 11 3 Patent notice Patents have been issued or applied for one or several features of this product 125 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 126 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 conditio
22. your dive computer serviced every two years or after 200 dives whichever comes first by an authorized SUUNTO service center This service will include a general operational check replacement of the battery and water resistance check The service requires special tools and training Do not attempt to do any servicing that you are not sure of e Should moisture appear inside the case or battery compartment immediately have the instrument checked by your SUUNTO service center 110 The specific scratch guard for DX is designed to help the display from getting scratched They can be purchased separately from your nearest retailer The scratch guard is easy to attach and also to replace if needed for more inform ation see the instructions on www suunto com 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 s
23. 00 m 984 ft Resolution 0 1 m from 0 to 100 m 1 ft from 0 to 328 ft 116 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 99 min after 99 Ascent time 0 to 999 min after 999 Ceiling depths 3 0 to 135 m 10 to 443 ft Air time 0 to 99 min after 99 Temperature display e Resolution 1 C 1 F e Display range 20 to 50 C 4 to 122 F e Accuracy 2 C 3 6 F within 20 minutes of temperature change Calendar clock e Accuracy 25 s month at 20 C 68 F e 12 24 h display Displays only in MIXED and CCR mode e Oxygen 5 99 e Helium 1 95 e Oxygen partial pressure display 0 0 3 0 bar e Oxygen Limit Fraction 0 200 with 1 resolution Logbook dive profile memory e Air Mixed CCR and Gauge dive recording rate default 20 seconds adjustable 10 20 30 60s 117 Memory capacity approximately 140 hours of diving with 20 second recording in terval without transmitter data Depth resolution 0 3 m 1 ft Operating conditions Normal altitude range 0 to 3 000 m 10 000 ft above sea level Operating temperature 0 C to 40 C 32 F to 104 F Storage temperature 20 C to 50 C 4 F to 122 F It is recommended that the instrument be stored in a dry place at room temperature NOTE Do not leave the dive computer in direct sunlight Tiss
24. ATER TEMPERATURE 6 2 2 Oxygen limit fraction OLF If set to the MIXED or CCR 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 computer 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 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 3 Gas change and multiple breathing gas mixes in MIXED mode The Suunto DX 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 92 NOTE CHANGING GAS MIX LONG PRESS UP THEN SCROLL THROUGH ENABLED MIXES BY PRESSING THE UP OR DOWN BUTTONS SELECT NEW MIX BY PRESSING THE SELECT BUTTON Mix number 02 He and PO for the mixes are shown when scrolling If the set PO limit is exceeded it will be shown with the PO
25. D FROM TIME MODE TIME AND BEARING ARE DISPLAYED AT THE BOTTOM OF THE SCREEN ACCESSED FROM DIVE MODE CURRENT DEPTH AND TIME OR MAXIMUM DEPTH TANK PRESSURE AS WELL AS BEARING OR DIVE TIME OR TEMPERATURE ARE DISPLAYED NOTE When accessed from DIVE mode toggle between the alternative displays by pressing the UP DOWN buttons 4 4 1 Compass display The Suunto DX displays the compass as a graphical representation of a compass rose The rose displays the cardinal and half cardinal points in addition to which the current bearing is also displayed numerically 32 4 4 2 Locking a bearing A bearing can be locked to help you follow a selected course and directional arrows point towards the locked bearing The last locked bearing is stored and is available the next time the compass is activated In the DIVE mode the locked bearings are also stored in the log TO LOCK A BEARING PRESS SELECT The Suunto DX also provides help for navigating square and triangular patterns as well as navigating a return heading This is made possible by following graphical symbols in the center of the compass display Table 4 1 Locked bearing symbols Symbol Explanation You are traveling towards the locked bearing You are 90 or 270 degrees from the locked bearing 33 Symbol Explanation You are 180 degrees from the locked bearing PS You are 120 or 240 degrees from the locked bearing 4 4 3 Compass settings Yo
26. E SUBMODES BY PRESSING UP BUTTON 5 8 DIVE mode settings Suunto DX 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 AIR MIXED CCR GAUGE so that for example Set point settings are only available in the CCR submode The table below shows what DIVE settings are available in each DIVE submode 52 Table 5 5 DIVE mode settings Setting AIR mode MIXED mode CCR mode GAUGE mode CC gases gt OC gases Set Point Personal Altitude i gt Tank pressure pairing Tank pressure alarm Depth alarm Dive time alarm Sample rate Deep stop Air time 53 The figure below shows how to enter the DIVE mode settings menu TA surtt ooo D 14 Air dive qj Ho Fly 0 00 E 7 Settings nun 2 rs Ls Lin wuss Max USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN DIVE SETTINGS NOTE Some settings cannot be changed until five 5 minutes has elapsed after the dive 5 8 1 Setting the CC gases If set to the DIVE CCR mode the correct oxygen and helium percentages of the diluent gas es in your diluent cylinder s must always be entered into the dive computer to ensure correct tissue and oxygen calculation The Set Point mode is used for setting the high and low oxygen partial pressure values When in the CCR CC Gases setting mode the equivalent maximum operating
27. ECTION MENU BY LONG PRESSING UP BUTTON THEN SCROLL TO OC MIX BY PRESSING UP BUTTON CONFIRM SELECTION WITH SELECT BUTTON TEXT OC APPEARS ON THE DISPLAY 95 6 2 5 Hyperoxic and hypoxic mixes in CCR Suunto DX displays text HYPER if the Diluent gas PO at the current depth is over 1 6 Text HYPOX is displayed if the Diluent gas PO at the current depth is less than 0 18 N ayas ee oa 2 A NODECTIME S 02 He 6 3 Diving in the GAUGE mode DIVE Gauge 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 BY PRESSING THE SELECT BUTTON DURING A DIVE A BOOK MARK IS WRITTEN IN THE PROFILE MEMORY THE DIVE TIMER IS RESET AND THE PREVIOUSLY TIMED INTERVAL IS DISPLAYED BELOW Z NOTE NOTE E4 NOTE The GAUGE mode does not provide decompression information There is no ascent rate monitoring in the mode If you dive with the GAUGE mode it is not possible to change between the modes before the no fly time has counted down In GAUGE mode the no fly time is always 48 hours 97 7 AFTER DIVING Once back at the surface Suunto DX continues to provide p
28. IXED mode is used when diving with open circuit air or with oxygen or helium enriched gas mixes and it allows setting up to eight different gas mixes The CCR mode is used when diving with a rebreather and it allows setting up to three diluent gases and up to eight different gas mixes Refer to Section 5 9 Before diving in the MIXED or CCR mode 6 2 1 Oxygen and helium displays When the DIVE MIXED or CCR mode is activated the display will show the information in the figure below In the MIXED mode the maximum operational depth is calculated based on set 02 He and PO values In CCR mode the PO value denotes the currently selected set point 90 ACTIVATION DISPLAY BRIEFLY SHOWS THE MAXIMUM OPERATING DEPTH PERSONAL ALTITUDE SETTINGS O HE VALUES AND PO VALUE IN CCR MODE THIS IS THE CURRENTLY SELECTED SET POINT If diving in the MIXED or CCR mode the Suunto DX will additionally show on the al ternative display press UP and DOWN buttons to toggle values the oxygen and helium percentage labeled O5 He e the set oxygen partial pressure limit labeled PO MIXED mode e the selected set point labeled PO CCR mode e the current oxygen toxicity exposure labeled OLF maximum depth e current time e water temperature e dive time e tank pressure if enabled DOWN BUTTON TOGGLES BETWEEN O HE MAXIMUM DEPTH CURRENT TIME AND TANK PRESSURE 91 UP BUTTON TOGGLES BETWEEN PO OLF DIVE TIME AND W
29. If you do not respond to its warnings the dive computer will enter an Error mode indicating that the risk of DCS 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 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 45 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 On an intended no deco dive you should immediately ascend to a depth of 3 to 6 m 10 to 20 ft and remain at this depth until air supply limitations require you to surface On a planned deco dive you should utilize your back up plan and proceed with the dive according to the plan available gases allowing 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 6 Wireless transmission In order to use th
30. NG mode PLAN NoDec mode the display first briefly shows the remaining desaturation time 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 minutes are displayed as During a dive series between two consecutive dives it is also possible to enter the surface interval time as a planning parameter If the O is too high for the planned depth NA is displayed instead of a numerical no de compression limit 101 cn Sl ue Aerio 1d Lam f Ya Ioro hadam 5 Su RFTIME 1 50 WHEN ENTERING THE PLAN MODE THE DISPLAY FIRST BRIEFLY SHOWS THE REMAINING DESATURATION TIME BEFORE GOING INTO PLAN MODE USE UP AND DOWN BUTTONS TO SCROLL NO DECOMPRESSION LIMITS AT DIFFERENT DEPTHS YOU CAN ALSO ADJUST YOUR SURFACE INTERVAL TIME TO YOUR PLAN 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 nitrogen 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 DIVE PLANNING mode by pressing the MODE button 102 NOTE The DIVE PLANNING mode is disabled in GAUGE mode and in Error mode see Section 5 5 Error conditions Th
31. O 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 A WARNING A WARNING 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 0 and PO values As a safety precaution the oxygen calcu lations in the dive computer are made with an oxygen percentage of 1 set O 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 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 13 A WARNING A WARNING A WARNING 14 SET THE CORRECT PERSONAL ADJUSTMENT MODE Whenever it is believed that factors that tend to increase th
32. SUUNTO DX USER S GUIDE en 1 WELCOME TO THE WORLD OF SUUNTO DIVE COMPUTERS 8 2 WARNINGS CAUTIONS AND NOTES ccc cc cce cece rr rr 9 3 SUUNTO USER INTERFACE inci ace iced earn weer ai idas 19 3 1 Navigating In Ine MENUS sti dt dhe sehen 20 3 2 Button symbols and functions ccc ccc cece c eee e eee aiai 22 A GET WING STARTED en e teta ns dende os 24 4 1 TIME mode SOHInOS wearcarda ranas micas dis 24 4 1 1 Setting the alarm ooccccccccccccccccnncnnncncnnnrnrn nn 26 AT 2 Seting Nelie tia 26 4 1 3 Setting the dual time ccc c ccc cece cece cece ceee ee eeeeeeseeeeeeeaes 27 AAA SCN Me Cates idas 27 A D SENG UIC HUMILS suse Giclee A nes 27 4 A6 Setting the backlight Gi iio 28 AACE Seting Ne CONTA tE yates a 28 4 1 9 Setting the Tones cti a ia 29 IS LO AA O O II Senta ote Rate tee Serene Reames 29 4 3 AC water contacts ooocccoccccccococccncncc cn cnnn rn rr rr 30 4 4 Learning how to use your COMPASS ccooccccccccncccncncnncnc rn 31 AA COMPASS USPS iio 32 4 42 LOCKINO a DEAMNG sia ae 33 14 92 Compass SUMISO asa 34 BEFORE DIVINE Densidad acera 38 5 1 The Suunto Fused RO Mania naciera cirio nddas 39 5 2 EMEergenoy ase MS Rda 39 5 52 Dive COMPUTE imta l s 1 00 40 5 4 Audible a a Visual alarm serris onpi a O EEE 40 Broce EMOh CONANIONS urinarios 45 5 6 Wireless transmisSiON ni is ide 46 5 6 1 Installing the wirel
33. amiliar 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 A WARNING A WARNING A WARNING A WARNING WARNING ZA CAUTION Z CAUTION 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 and or battery compartment may seriously damage the unit Only an authorized SUUNTO service center should do service activities Do not use Suunto USB Cable in areas where flammable gases are present Doing so may cause an explosion Do not disassemble or remodel Suunto USB Cable in any way Doing so may cause an electric shock or fire Do not use if Suunto USB Cable or parts are damaged Only use at specified temperatures Only use Suunto USB Cable with Suunto dive computers Check compatibility before use 17 Z CAUTION Z CAUTION Z CAUTION E4 NOTE NOTE 18 Only use a clean and dry Suunto USB Cable Clean and dry the connector surfaces before use to prevent damage to the Suunto dive computer Only attach Suunto USB Cable to the data transfer contact on the Suunto dive computer Never lift or carry your cylinder by holding the wireless tank pressure transmitter
34. 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 future dives 19 WHEN CEILING AND STOP ARE DISPLAYED WITH DOWNWARD POINTING ARROW 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 may shorten 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 5 12 Deep stops In Suunto DX deep stops are activated on all dives below 20 m 66 ft The Suunto Fused RGBM model calculates deep stops iteratively placing the first stop about halfway between the maximum depth and the ceiling depth After the first deep stop is completed another deep stop will be prompted halfway to the ceiling and so on until the ceiling depth is reached However deep stops are deactivated when the decompression ceiling descends to 4th depth or deeper of maximum depth of the dive Enabling the deep stops does not disable Recommended Safety Stops Mandatory Safety Stops for example due to continuous ascent rate violations are still prompted If a deep stop is violated
35. at 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 is 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 86 ye Se gt A aoe OE E ae ae E A A y CEILING 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
36. ation all graphical display elements are turned ON and the backlight and the beep are activated After this the selected altitude and personal settings are dis played along with the maximum operating depth MOD 0 or O He and the PO values During a dive series between two consecutive dives the dive computer also displays the current tissue saturation graph A few seconds later the battery power indicator is shown and the dive computer enters surface mode WARNING SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS LIMIT THEIR MAXIMUM DEPTH TO 40 M 130 FT OR TO THE DEPTH CALCULATED BY THE COMPUTER 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 sickness 67 Surf t 0 00 Ho Fly 0 00 A TISSUE SATURATION GRAPH IS DISPLAYED BETWEEN DIVES WHEN DIVE MODE IS ACTIVATED ON X AXIS THE FAST TISSUES ARE ON LEFT AND SLOW TISSUES ON RIGHT ON Y AXIS CALCULATED PERCENTUAL TISSUE SATURATION VALUES BASED ON TECHNICAL RGBM ARE SHOWN Y AXIS RANGES FROM 0 TO 100 AS SURFACE TIME ELAPSES TISSUE SATURATION PERCENTAGES DECREASE ACCORDINGLY At this time perform your pre checks and ensure that e the instrument operates in the correct mode and provides a complete display AIR MIXED CCR GAUGE mode e the battery level is ok e the altitude personal adjustment Deep stops settings are correct e the instrument displays correct units of measurement
37. bol Battery ANY i Replace Low E SE Battery 69 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 replacement is recommended 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 tank pressure transmitter s battery needs to be replaced 5 10 3 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 6 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 For more information see Section 10 2 2 Altitude diving Table 5 6 Altitude Adjustment settings Alt adjustment Altitude range value Alt adjustment Altitude range value 300 1500 m 1000 5000 ft 1500 3000 m 5000 10 000 tt BANOTE Section 5 8 4 Setting the personal altitude adjustments describes how t
38. 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 optional cable required 107 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 and CCR 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 dive computer serial number personal information 30 characters By using the DM4 you are able to enter setup options such as input a personal 30 character field into the Suunto instrument manually add comments multimedia and other personal information to the PC based dive data files 7 8 Movescount Movescountis 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 108 To connect to Movescount 1 Goto www movescount com 2 Register and create your free Movescount account 3 D
39. cient 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 SICKNESS DCS 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 DCS OR OXY GEN 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 ex posure limits provided by the instrument to minimize the risk of DCS As an added measure of safety you should consult a physician regarding your fitness before diving A WARNING A WARNING A WARNING A WARNING SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS LIMIT THEIR MAXIMUM DEPTH TO 40 M 130 FT OR TO THE DEPTH CALCULATED BY THE COMPUTER 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 sickness 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 decompres
40. depth based on the chosen setting is also be displayed 54 ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON After entering values for Diluent 1 you can set additional diluents Diluent 2 and Diluent 3 similarly You can set these to ON or OFF Diluent 1 is always set as an ON gas whereas Diluent 2 and Diluent 3 are OFF by default WARNING Only enable the diluent s you actually have available and remem ber to check the set values before every dive to ensure they are correct 5 8 2 Setting the open circuit gases If set to the DIVE MIXED or DIVE CCR mode the correct oxygen and helium percent ages of the open circuit gas es in all 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 99 Y 24 A N 7 E Ve S t AL VAL y NV t ADJUST WITH UP AND O A IA i ESR DOWN BUTTONS ACCEPT Hin EN WITH SELECT BUTTON LI LS i When in the MIXED or CCR OC Gases setting mode the equivalent maximum oper ating 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 o
41. e possibility of DCS 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 breathing gas re quired to reach the surface A WARNING A WARNING A WARNING A WARNING NEVER ASCEND ABOVE THE CEILING You must not ascend above the ceiling during your decompression In order to avoid 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 ANALYZED 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 WITH A GAS IF YOU HAVE NOT PERSONALLY VERIFIED
42. e DIVE PLANNING mode calculates no decompression times for Diluent 1 Mix1 only If additional mixes are enabled in the MIXED or CCR mode they do not affect the calculations in PLAN NoDec mode 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 10 3 Diving at altitude and in Sec tion 5 10 4 Personal adjustments 7 5 1 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 five 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 Refer also to Section 7 2 Dive numbering 7 6 MEMORY mode The memory options in the MEMORY mode include dive logbook MEM Logbook and dive history MEM History They are accessed from the DIVE mode and you can toggle between them by using the UP DOWN buttons 103 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 7 6 1 Dive logbook MEM Logbook The Suunto DX has a very sophisticated
43. e transmitter the wireless integration needs to be enabled in your Suunto DX settings To enable or disable the wireless integration refer to Section 5 8 5 Setting the tank pressure pairing 5 6 1 Installing the wireless transmitter When purchasing the Suunto wireless transmitter we strongly recommend that you have your Suunto representative attach the transmitter to the first stage of your regu lator 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 46 2 Thread the high pressure transmitter of the Suunto DX into the HP port of your regulator 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 6 2 Pairing and code selection In order to receive wireless data the transmitter and the Suunto DX 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 starts sending pressure data together with a code number During the pairing procedure the Suunto dive computer stores the code numbe
44. ed in the startup screen when entering the DIVE mode If the mode does not match the altitude or personal conditions refer to Section 5 10 3 Diving at altitude and Section 5 10 4 Personal adjustments it is imperative that you enter the correct selection before diving Use Altitude Adjustment to select the correct altitude and use Personal Adjust ment to add an extra level of conservatism e ADJUST WITH UP AND iF Personal DOWN BUTTONS ACCEPT WITH SELECT BUTTON E Altitude Il y 5 8 5 Setting the tank pressure pairing In the Tank Pressure Pairing setting mode the wireless transmission can be set ON or OFF depending on whether the wireless pressure transmitter is used or not When the wireless transmission is set OFF no cylinder pressure related data is shown nor data reception made The Code setting allows you to verify the selected transmitter code and to clear the stored transmitter code Clearing the code enables re pairing with the transmitter which can be necessary if a new transmitter or used or if several divers are using the same transmitter code 61 ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT 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 200 3000 psi The alarm is the secondary cylinder pressure alarm point The alarm is activated when the tank pressure drops below the set limit You can ackn
45. ess transmitter 0 ccc cece cece cence eee eeees 46 5 6 2 Pairing and code selection asia cin tien 47 ll A scuw ede tee specter erect ieeavedcivacasntes 50 5 7 Accessing DIVE MOJE sens Som anten niuteasemcuiascanitn daxe dicurhenninaeaeeece xt 52 50 DIVE MOde SetInOS iaa Steere Seawind ri 52 5 8 1 Setting the CC gases a a AAA AA 54 5 8 2 Setting the open circuit gases ooococcococccccocococncnnn ra rnnn rro 55 5 8 3 Setting the Set Point values ooococcococococococonacnnonacnnnnn oo 57 5 8 4 Setting the personal altitude adjustments oocoococcooocccccooooo 61 5 8 5 Setting the tank pressure pairing oooocooococconcnnccncnnnnnrnoo 61 5 8 6 Setting the tank pressure alarm 0c cece cece eee e eee eee eeneeees 62 5 8 7 Setting the depth alarm datos 63 5 8 8 Setting the dive time alarm 06 ccc cece eee cece eee e eee eee eeeeeaes 63 5 8 9 Setting the sample rate ccc c cece cece ce ee eee eee ee eeeeeeseeeeenes 64 9 09 10 Setting the deep SIOPS ii it seven dis 64 5 8 11 Setting the air time cece cece cece ee eee ence AATE a ai ENA 65 5 9 Before diving in the MIXED or CCR mode ccccee eee ne eee e eee e ees 65 59 1 Detault Gas Mix SEMINGS ana weaned 66 5 10 Activation and pre CheOCKS siii th abet tee as 66 5 10 1 DIVE mode activation 0c cece cece cece cece eee eueeuneuneunenaeeas 67 5 10 2 Battery powe
46. he 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 10 4 Personal adjustments There are personal factors that can affect your susceptibility to DCS 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 DCS 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 71 e dehydration e personal settings in AIR MIXED CCR mode e previous history of DCS 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 7 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 DCS exist select P1 or even the most conservative P2 For very experienced diver
47. high capacity Logbook and Profile Memory The data is recorded in the profile memory based on the selected sample rate The END OF LOGS text is displayed between the oldest and most recent dive The following information will be shown on three pages 104 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 YOU CAN SCROLL THE GRAPHICAL DIVE PROFILE ON PAGE III WITH UP BUTTON LONG PRESS UP BUTTON TO AUTO SCROLL THE DIVE PROFILE GRAPH FORWARD Page main display maximum depth date of dive type of dive AIR MIXED CCR GAUGE dive start time dive number oxygen percentage for the first used gas mix helium percentage for the first used gas mix total dive time in minutes in all modes Page Il maximum depth surface time after previous dive average depth 105 e consumed pressure if enabled e warnings OLF AIR MIXED CCR Page Ill e depth time profile of the dive e water temperature e tank pressure if enabled e gas changes MIXED CCR e set point changes CCR NOTE NOTE NOTE 106 Memory capacity depends on the selected sample rate With factory default setting 20 s and without transmitter data the ca pacity is approximately 140 hours With transmitter data the capa city is minimum 35 hours After that when new dives are added the oldest dives are deleted The conten
48. ic appliances Move to another location and try to calibrate the compass again If the calibration continues to fail contact an authorized Suunto service center Declination You can compensate for the difference between true north and magnetic north by adjusting the compass declination The declination can be found for example from sea charts or topographic maps of the local area 36 ADJUST WITH UP AND DOWN ACCEPT WITH SELECT Time out You can set the compass time out minutes After the set time has passed from the latest button press the dive computer returns to the TIME or DIVE mode from the COMPASS mode ee ley ADJUST WITH UP EN min H AND DOWN ACCEPT WITH SELECT You can exit the COMPASS mode also by long pressing the SELECT button 37 5 BEFORE DIVING Do not attempt to use the dive computer without reading this user s guide in 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 DX is an outstanding tool for assisting properly trained certified divers in planning and executing sport dives It is NOT A SUBSTITUTE FOR CERTIFIED SCUBA INSTRUCTION including training in the principles of decompres sion WARNING Di
49. ime ASC TIME CCR Ceiling Ceiling zone Central nervous system toxicity CNS CNS Compartment DAN DCS DM4 130 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 Abbreviation for ascent time Closed Circuit Rebreather scuba that recycles all exhaled gas On a decompression stop dive the shallowest depth to which a diver may ascend based on computed nitrogen load On a decompression stop dive the zone between the ceiling and the ceiling plus 1 2 m 4 ft This depth range is displayed with two arrows pointing toward each other the hour glass icon 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 sickness Suunto DM4 with Movescount a software for managing your dives Decompression Decompression range Decompression sickness Dive series Dive time AP EAD EAN Enriched air nitrox Equivalent air depth Floor Time spent at a decompression stop or range before
50. 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 REACH A DEPTH OF 6 M 83 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 5 Safety Stops and Deep Stops A three 3 minute Recommended Safety Stop is always prompted after every dive to over 10 m regardless if deep stops are enabled or disabled DURING DESCENT DURING ASCENT YOU RE YOU RE SHOWN THAT A ADVISED TO MAKE A DEEP DEEPSTOP IS NEEDED AT STOP AT 16 M FOR THE THE DEPTH OF 16 M DURATION SHOW BY THE TIMER 42 S REMAINING 6 1 6 Stopwatch Timer You can also use a stopwatch during diving for various timing purposes To activate the stopwatch in the DIVE AIR MIXED or CCR mode long press the MODE button then start and stop it by short pressing the SELECT button 84 START AND STOP THE TIMER BY PRESSING SELECT BUTTON 6 1 7 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 wi
51. is imperative that you wait 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 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 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 Screw the four screws back into place 115 10 TECHNICAL DATA 10 1 Technical specifications Dimensions and weight Dive Computer Diameter 49 mm 1 94 in Thickness 17 mm 0 68 in Weight 107 g 3 77 oz with elastomer bracelet 182 g 42 oz with titanium bracelet Wireless tank pressure transmitter Max diameter 40 mm 1 57 in Length 80 mm 3 15 in Weight 118 g 4 16 oz Resolution 1 bar 1 psi Rated working pressure 300 bar 4000 psi maximum allowed pressure 400 bar 5800 psi Depth gauge Temperature compensated pressure sensor Calibrated complying with EN 13319 Maximum depth of operation 150 m 492 ft complying with EN 13319 Accuracy 1 of full scale or better from 0 to 150 m 492 ft at 20 C 68 F complying with EN 13319 Depth display range 0 to 3
52. k 40 Table 5 2 Instructional beep Sound pattern Interpretation Descending Change gas ascending The visual information on the dive computer display is shown during the alarm breaks in order to save battery Table 5 3 Audible and visual alarm types High priority alarm followed PO value is greater than the adjusted value Current by Start ascending beep depth is too deep for the gas in use You should imme repeated for the maximum of diately ascend or change to a gas with a lower oxygen three minutes The PO value percentage blinks 41 High priority alarm followed PO value is smaller than 0 18 bar In DIVE Mixed by Change gas beep soun and DIVE CCR modes only The depth is too shallow ded two times The PO value and the ambient pressure is too low for the current blinks gas The oxygen content is too low to keep you con scious You should immediately switch the gas High priority alarm followed Decompression ceiling depth is exceeded You should by Start descending beep immediately descend to or below the ceiling repeated for the maximum of three minutes The Er symbol blinks and an arrow points downwards High priority alarm sounded Maximum allowed ascent rate 10 m per min 33 ft per three times The SLOW sym min is exceeded Slow the ascend rate down bol blinks Low priority alarm followed by No decompression dive turns into a decompression Start ascending beep
53. ll 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 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 85 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 WARNING 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 33 ft per minute or e make your decompression stop deeper than at the ceiling These factors will also increase the amount of breathing gas re quired to reach the surface Ceiling ceiling zone floor and decompression range When in decompression it is important th
54. nded two times The Maximum depth value blinks Low priority alarm sounded two times The Dive time value blinks Cylinder pressure reaches the selected alarm pressure 10 200 bar Cylinder pressure reaches the fixed alarm pressure 50 bar This alarm operates only if the pairing to the wireless tank pressure transmitter is performed correctly and the transmission of tank pressure data is not disrupted during the dive for any reason You can acknowledge the alarm The OLF value reaches the fixed 80 or 100 In DIVE Mixed and DIVE CCR modes only You can acknowledge the alarm The selected depth 3 120 m 10 394 ft is exceeded The fixed maximum depth 120 m 394 ft is exceeded You can acknowledge the alarm The selected dive time 1 999 min is exceeded You can acknowledge the alarm NOTE When the backlight is turned OFF it does not illuminate when an alarm is activated 44 NOTE When the tones are turned OFF the alarms are not sounded 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 5 Error conditions The dive computer has warning indicators that alert you to react to certain situations that would significantly increase the risk of DCS
55. nit 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 quality of the battery Some lithium batteries may exhaust unexpectedly which cannot be tested in advance The time the transmitter has been stored until it gets to the customer The battery is installed in the unit at the factory 119 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 10 2 Suunto decompression model development 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 both external and internal experts In the late 1990s Suunto implemented Dr Bruce Wienke s RGBM Reduced Gradient Bubble Model bubble model to work with the earlier M value based model The first commercial products with the feature were the iconic Suunto Vyper and Suunto Stinger With these products the improvement of diver safety was significant as they addressed a number of diving circumstances outside the range of dissolved gas only models by Monitoring continuous multiday diving Computing closely spaced repetitive diving Reacting to a dive deeper than
56. ns 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 limited 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 127 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 an
57. ntly and are ready to accept greater personal risk 121 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 10 2 2 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 dive 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
58. ost dive safety information and alarms Calculations to enable repetitive dive planning also help to maximize diver safety Table 7 1 Alarms A Diver Attention 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 IT IS 6 MINUTES SINCE YOU SURFACED FROM A 35 MINUTE DIVE THE MAXIMUM DEPTH WAS 21 5 M THE PRESENT DEPTH IS 0 0 M THE AIRPLANE SYMBOL AND NO FLY VALUE INDICATE THAT YOU SHOULD NOT FLY FOR 14 HOURS 28 MINUTES THE DIVER ATTENTION SYMBOL INDICATES THAT YOU SHOULD PROLONG YOUR SURFACE INTERVAL TIME 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 e cylinder pressure in bar psi if enabled If set to MIXED or CCR mode the following information will also be shown e the oxygen and helium percentages labeled O 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
59. ove 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 air supply will safely allow After reaching the sur face do not dive for at least 24 hours 39 For technical dives you must have the dive plan created and available on the dive e g 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 your slate 5 3 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 sickness 5 4 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 Table 5 1 Dive computer alarms High priority ee 2 4 s sound 2 4 s break Low priority SS 0 8 s sound 3 2 s brea
60. owledge this alarm The 50 bar 700 psi alarm however is fixed and cannot be changed You can acknow ledge this alarm ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 62 5 8 7 Setting the depth alarm The Depth Alarm setting is factory set to 30 m 100 ft but you can adjust it according to your personal preference or switch it off altogether The depth range can be set from 3 m to 300 m 10 ft to 984 ft ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 8 8 Setting the dive time alarm The Dive Time Alarm setting can be activated and used for several purposes to add to your diving safety ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON NOTE With a range of 1 999 minutes the alarm can be set to your planned bottom time for example 63 5 8 9 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 The factory default setting is 20 seconds user selectable to 10 20 30 or 60 s ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 8 10 Setting the deep stops In the DIVE AIR mode in the Deep Stops setting mode the Deep stops can be set ON or OFF depending on whether the Deep stops are used or not In the MIXED and CCR mode s the Deep stops are always set ON Deepstop Q ADJUST WITH UP AND E DOWN BUTTONS ACCEPT WITH SELECT BUTTON
61. ownload and install the Suunto DM4 software from the Movescount com website if you do not already have the DM4 installed on your laptop To 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 109 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 e CARE OF YOUR DIVE COMPUTER e NEVER try to open the case of the dive computer e Have
62. pending on your air consumption rate With a high consumption rate the limit will be closer to 50 bar 700 psi and with a low rate closer to 35 bar 500 psi NOTE NOTE NOTE NOTE 82 Filling your BCD affects the air time calculation due to the tempor ary increase in air consumption The remaining air time is not displayed when either deep stops or the decompression ceiling have been activated You can recall the remaining air time by long pressing the DOWN button but the ceiling disappears A change of temperature will affect the cylinder pressure and consequently the air time calculation If the air time is turned OFF the air time is not displayed Low Air Pressure Warnings The dive computer will warn you with two 2 audible double beeps and a blinking pressure display when the cylinder pressure reaches 50 bar 700 psi Two 2 double beeps are also heard when the cylinder pressure goes down to the user selected alarm pressure and when the remaining air time reaches zero 6 1 4 Ascent rate indicator The ascent rate is displayed graphically along the right hand side with a vertical bar When the maximum allowed ascent rate is exceeded the lower segment of the bar starts to blink with the top segment staying solid indicating that the maximum ascent rate has been exceeded Continuous ascent rate violations will result in Mandatory Safety Stops When Recom mended Deep Stop is enabled the length is indicated
63. quired 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 Abbreviation for high pressure cylinder pressure The maximum operating depth of a breathing gas is the depth at which the partial pressure of oxygen PO of the gas mix exceeds a safe limit 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 of 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 Open circuit scuba that exhausts all exhaled gas Abbreviations for oxygen enriched air nitrox Abbreviation for oxygen limit fraction Abbreviation for oxygen tolerance unit Oxygen tolerance unit Oxygen limit fraction 05 Oxygen partial pressure PFO PO RGBM Reduced Gradient Bubble Model Repetitive dive Residual nitrogen SCR Scuba SURF TIME Used to measure the whole body toxicity A term used by Suunto for the
64. r 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 wireless transmitter When there is no stored code the Suunto DX displays cd and receives data with lowered sensitivity from a very short distance only 0 1 0 5m 0 5 1 ft The flash symbol is not displayed at this phase By taking the Suunto DX 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 NOTE The pairing procedure only needs to be performed once before the first use You do not need to redo the pairing unless you change the transmitter to a new one or another diver in your group uses the same code as you 47 To pair the transmitter and the Suunto DX 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 DX is turned on and that the wireless integration is enabled in the Suunto DX settings Tank Press is set ON For more information refer to Section 5 8 5 Setting the tank pressure pairing If the Suunto DX is in the TIME mode enter the DIVE mode by short pressing the MODE button The DX should display cd in the lower left corner of the display 3 Slowly open the cylinder valve fully and pressurize the system The transmitter start
65. r indication ccc cc ccc c eee ce eee eeeseeseneeeneuees 69 Dv 0 32 DIVING ala ii ii 70 5 10 4 Personal AdjUSIMENISsici4 vioet weenie eoiaarar et Weer reia 71 O MS o e ee dea 74 5 11 1 Recommended Safety Stops cece cece ce ceeeeeeeeeeeeeeneees 74 5 11 2 Mandatory Safety OPS sicario ita es 75 SAA A A EAER ER ES 76 SI Ei 78 6 1 Diving in the AIR mode DIVE All rrenen a a 78 OAs Basie ANCA aot A A A Sii 79 6 t2 BOOKMARK rta 80 6 1 3 Tank pressure data aia ai RA PAL 81 6 714 ASCENT TALS NICO a e E E a E Dawa as 83 6 15 Safety Stops and Deep Stops ud E a N ede ead 84 510 Stopwatch IMET iaa 84 6 1 7 Decompression dives tirate 85 6 2 Diving in MIXED or CCR mode cece cece ete cnn 90 6 2 1 Oxygen and helium displays c cece cece eee ence eee e ee eeeeeeeaes 90 6 2 2 Oxygen limit fraction OLF ccc cece cece cece e ence eee cnn 92 6 2 3 Gas change and multiple breathing gas mixes in MIXED mode 92 6 2 4 Set point and diluent gas mix change in CCR mode 55 93 6 2 5 Hyperoxic and hypoxic mixes in CCR ooooccccccccccnnconc carr 96 6 3 Diving in the GAUGE mode DIVE Gauge c cece eee e eee eee 96 1 oAr LER DIVING satis 98 SA A A cua aeeens 98 7 22 DIVE NUMDEIING A S cmans Aenean 99 7 3 Repetitive dive PlanNING cse54 v0 Pan ee cee eens ata 100 LA FIYI aller CiViING o taka needs 100 7 5 DIVE PLANNING mode PLAN NoDec
66. rder 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 enable the mixes you actually have available and remember to check the set values to ensure they are correct 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 56 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 999 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 and CCR OC Gases mode the default oxygen percentage 05 setting is 21 air and oxygen partial pressure PO setting 1 4 bar 5 8 3 Setting the Set Point values In DIVE CCR mode you ll use Set Point menu for adjusting your Low High Se
67. re transmission must remain ON 2 Inthe next menu a Code number is displayed Clear the code by short pressing the UP button toggle from Ok to Clear and press the SELECT button 3 Short press the MODE button to exit the DIVE settings 49 4 Take the Suunto DX unit close to the transmitter the system must be pressurized to above 15bar 300 psi The dive computer displays the received new code number and then start displaying the transmitted cylinder pressure The wireless transmitter indicator flash symbol is displayed every time the Suunto DX receives a valid signal 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 detected e g the user presses the purge button on regulator or breathes from the regulator 5 6 3 Transmitting data After the pairing procedure the Suunto DX will receive cylinder pressure data from the transmitter The pressure is displayed in either bars or psi depending on the unit selected Any time the Suunto DX receives an appropriate signal a flash symbol is displayed in the lower left corner Table 5 4 Pressure transmission related displays transmitter Cd 10 Set Code Code number can be between 01 40 B 50 Cd No code stored the Suunto unit is
68. ready for pairing with the The flash symbol is blinking Pressure reading exceeds allowed C limit over 360 bar 5220 psi no conn Text no conn is displayed when the unit receives no data packets from the transmitter Pressure reading has not been updated for more than one minute The latest valid pressure reading is displayed intermittently The flash symbol is not displayed Transmitter is out of range gt 1 2 m 4 ft in power saving mode or on another channel Activate the transmitter by breathing off the regulator and bring the D series unit closer to the transmitter then check if the flash symbol appears If not clear the code on the Suunto D series unit batt Pressure transmitter battery voltage is low The pressure reading E is displayed intermittently Change the transmitter battery Aan e S A lm N 3 Lim N MIA surtt oon AY f f _ ooo Ay fs Surft ooo A if surtt 000 Hy dAjsure t oon o VAG Ho Fla oo H INIA A A IAS ri o oo Hi 51 5 7 Accessing DIVE mode The Suunto DX has four diving modes AIR mode for diving with standard air only MIXED mode for diving with oxygen and or helium mixtures CCR for rebreather diving 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 PRESS MODE TO ENTER THE DIVE MODE SELECTION THEN QUICKLY TOGGLE THROUGH TH
69. s an example of a decompression dive at the ceiling zone TWO ARROWS POINT AT EACH OTHER HOUR GLASS YOU ARE IN THE OPTIMUM CEILING ZONE AT 3 MAND YOUR MINIMUM ASCENT TIME IS 9 MINUTES During the decompression stop ASC TIME will count down towards zero 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 89 DECOMPRESSION DIVE ABOVE CEILING NOTE DOWNWARD POINTING ARROW ER WARNING AND ALARM YOU SHOULD IMMEDIATELY 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 5 Error conditions 6 2 Diving in MIXED or CCR mode The M
70. s by their order of importance A WARNING Z CAUTION E4 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 DX and must not be ignored A WARNING A WARNING 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 IMMEDIATELY AND CONSULT A DOCTOR A WARNING A WARNING A WARNING 10 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 sickness DCS 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 Insuffi
71. s transmitting when the pressure exceeds 15 bar 300 psi 4 Take the Suunto DX unit close to the transmitter The unit will then quickly display the selected code number and then start displaying the transmitted cylinder pressure The wireless transmitter indicator blinking flash symbol is displayed every time the Suunto DX receives a valid signal A WARNING If there are several divers using a Suunto wireless transmitter always ensure that each diver is using a different code before Starting the dive In case there are several divers using the same code the transmitter s code must be changed before diving To assign a new transmitter code 1 Slowly open the cylinder valve fully to pressurize the system 2 Immediately close the tank valve and quickly depressurize the regulator so that the pressure is reduced to less than 10 bar 145 psi Wait about 10 seconds and slowly open the cylinder valve again to re pressurize to above 15 bar 300 psi 48 The transmitter assigns a new code automatically ZA NOTE To pair on the new transmitter code the Suunto DX code must be cleared first To re pair the transmitter with the new code and the Suunto DX dive computer 1 Inthe DIVE mode of the Suunto DX long press the DOWN button to enter the DIVE settings Enter the Tank Press Pairing menu Refer to Section 5 8 5 Setting the tank pressure pairing Short press the SELECT button to bypass the tank pressure ON OFF selection the tank pressu
72. s 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 P1 or P2 selected or longer P 1 or P 2 selected no decompression times 12 Table 5 7 Personal Adjustment settings Personal adjust 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 POO Ideal conditions Default P1 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 DCS or other personal injury and death 73 5 11 Safety Stops Safety Stops are widely considered good diving practice for recreational diving and are an integral part of most dive tables The reasons for performing a Safety Stop in clude reducing sub clinical DCS microbubble reduction ascent control and orientation before surfacing The Suunto DX displays two different types of Safety Stops Recommended Safety Stop and Mandatory Safety Stop 5 11 1 Recommended Safety Stops With every dive over 10 meters there is a three min
73. sion 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 and Safety Deep Stop are correct 11 A WARNING WARNING A WARNING 12 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 DCS 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 sickness THE DIVE COMPUTER SHOULD NEVER BE TRADED OR SHARED BETWEEN 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 T
74. stop dive Depth is below the decompression floor sounded two times The ASC level You should ascend to or above the floor TIME symbol blinks and an arrow points upwards 42 Low priority alarm followed by Gas change is recommended In DIVE Mixed and Change gas beep sounded DIVE CCR modes only You should change to a gas once The Gas mix value more favorable to decompression ASC TIME assumes 02 05 He blinks that the gas is changed and is accurate only if you change the gas accordingly Low priority alarm followed by Notification sound that the set point has been switched Change gas beep sounded automatically upon reaching the defined depth In DIVE once The backlight is lit and CCR mode only text Set Point selected is displayed shortly Low priority alarm followed by Mandatory Deep Stop is violated You should descend Start descending beep for to complete the Deep Stop the duration of the Deep Stop violation The DEEPSTOP symbol blinks and an arrow points downwards Low priority alarm followed by The Deep Stop depth is reached Make the Mandatory two short beeps sounded Deep Stop for the duration shown by the timer once The DEEPSTOP and timer symbols are displayed 43 Low priority alarm sounded two times The Tank pres sure symbol blinks Low priority alarm sounded two times The OLF value blinks if the PO value is greater than 0 5 bar Low priority alarm sou
75. t Point PO value and Switch High Low depth ADJUST WITH UP AND i DOWN BUTTONS ACCEPT as WITH SELECT BUTTON Low Set Point The default setting for Low Set Point is PO 0 7 bar range 0 4 0 9 bar 57 ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON Switch High depth can be set ON or OFF ON means automatic switch to high set point at the defined depth OFF means manual set point switching The default setting for Switch High is ON 20 0 m 70 ft range 15 0 60 0m 50 200 ft 58 Low ema N BN ADJUST WITH UP AND EIN J DOWN BUTTONS ACCEPT WITH SELECT BUTTON Switch Low depth can be set ON or OFF ON means automatic switch to low set point at the defined depth OFF means manual set point switching The default setting for Switch Low is OFF 4 5 m 15 ft range 3 0 15 0 m 10 50 ft 59 Surface Om Oft Low Set Point 0 7 Low Set Point 0 7 10 m 33 ft Switch Low 10 m 20m 66 ft L 22 2 22 Mo o 2222222222 HH 30 m 98 ft The picture above illustrates a CCR dive using set points Low Set Point 0 7 High Set Point 1 3 and automatic high Switch High ON 20 m and low Switch Low ON 10 m set point switching For shallow water lt 6m 20 ft decompression the Switch Low can be turned OFF 60 5 8 4 Setting the personal altitude adjustments The current Altitude and Personal Adjustment settings are display
76. tacando alce dos rodean ze 126 O EA Maan tua E E E EET A E EE TEE 126 T22 EN A rA AE A ANTEA AEREE NE 126 123 EN 2507 PO essa a e a e E E 126 13 SUUNTO LIMITED WARRANTY 0 cece cece cece cece eee eeeeeeneneneanas 127 14 DISPOSAL OF THE DEVICE sind tiasiseiat Rea 129 GEOSSARY oneen viaeida thot A a So een 130 1 WELCOME TO THE WORLD OF SUUNTO DIVE COMPUTERS Suunto DX wristop dive computer is designed to help you get the most out of your diving Suunto DX is the world s first wristop sized dive computer to integrate rebreather and trimix compatibility a tilt compensated 3D digital compass and wireless tank pressure reception into one compact unit It simplifies your diving experience because all the information you need relating to depth time optional tank pressure decompression status and direction is now available on one easy to read screen The Suunto DX 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 understand dive specific terminology 8 2 WARNINGS CAUTIONS AND NOTES Throughout this user s guide important safety icons are displayed Three classifications are used to separate these icon
77. tes 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 2 Setting the open circuit gases 5 9 1 Default gas mix settings In the MIXED and CCR mode the Suunto DX allows you to set 1 8 open circuit gas mixes containing 5 99 oxygen and 0 95 helium In CCR mode the DX additionally allows up to three diluent gases In the MIXED and CCR mode the default setting is standard air 21 O and 0 He It remains in this setting until the O2 is adjusted to any other percentage of oxygen 5 99 or the He is adjusted to any other percentage of helium 1 95 In MIXED mode 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 In CCR mode you ll use the Set Point menu in CCR Dive Settings to define your high and low set points and switch depths 5 10 Activation and pre checks This section describes what happens when you activate the DIVE mode and explains the pre checks that it is highly recommended you perform before you get into the water 66 5 10 1 DIVE mode activation Unless the DIVE mode is set OFF 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 cylinder pressure altitude and personal ad justment settings battery condition oxygen settings and so on After activ
78. the dive computer uses several methods to conservatively estimate the oxygen exposure For example 122 The displayed oxygen exposure calculations are raised to the next higher percent age value The CNS limits up to1 6 bar are based on 1991 NOAA Diving Manual limits 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 Mixed mode The selected 0 on the alternative display OLF alternative display for either CNS or OTU whichever is larger Audible alarms are given and the OLF value starts to blink when the 80 and 100 limits are exceeded Audible alarms are given and the actual PO value blinks when it exceeds the preset limit In dive planning the maximum depth according to the O and maximum PO selected 123 10 4 lsobaric counterdiffusion ICD ICD is the term used to describe the physiologic effect when the diffusion of different gases occurs in opposite directions while under a constant ambient pressure Partic ularly in diving the gases are nitrogen and helium ICD can produce the formation of bubbles in tissues where the sum of helium and nitrogen pressures exceeds ambient pressure This situation may occur
79. the previous dive Adapting to rapid ascents which produce high microbubble silent bubble build up Incorporating consistency with real physical laws for gas kinetics 120 In Suunto Fused RGBM the tissue half times are derived from Wienke s FullRGBM where human body is modeled by fifteen different tissue groups FullRGBM can utilize these additional tissues and model the on gassing and off gassing more accurately The amounts of nitrogen and helium on gassing and off gassing in the tissues are calculated independently from each other The advantage of Suunto Fused RGBM is additional safety through its ability to adapt to a wide variety of situations For recreational divers it may offer slightly longer no deco times depending on the chosen personal setting For open circuit technical divers it allows use of gas mixes with helium on deeper and longer dives helium based gas mixes provide shorter ascent times And finally for rebreather divers the Suunto Fused RGBM algorithm gives the perfect tool to be used as a non monitoring set point dive computer 10 2 1 Diver safety 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 DCS 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 consta
80. ts of the memory will re main when the battery is changed providing that the battery has been replaced according to the instructions 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 Depending on the sampling rate the maximum depth reading may differ from the maximum depth reading of the Dive History up to 0 3 m 1 ft 7 6 2 Dive history The dive history is a summary of all the dives recorded by the dive computer The following information will be shown on the display DIVE HISTORY DISPLAY TOTAL NUMBER OF DIVES DIVE HOURS AND MAXIMUM DEPTH The Dive History Memory can hold a maximum of 999 dives and 999 diving hours When these maximum values are reached the counters will start again from zero EA NOTE The maximum depth can be reset to 0 0 m 0 ft using the PC Inter face cable and the downloadable Suunto DM4 software 7 7 Suunto DM4 The Suunto DM4 is an optional software that greatly enhances the functionality of your Suunto DX 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 DX 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 ht tp www movescount com see Section 7 8 Movescount You
81. u can define the compass settings Calibration Declination and Timeout in the COMPASS mode 2 E E S 5 fll Getting E ol q O Declination fin S S nana Calibration Because of changes in the surrounding magnetic field the Suunto DX electronic compass occasionally needs to be re calibrated During the calibration process the compass adjusts itself to the surrounding magnetic field As a basic rule you should calibrate the compass whenever it does not seem to operate properly or after replacing the dive computer s battery 34 NOTE The unit will automatically enter the calibration sequence when taken into use for the first time Strong electromagnetic fields such as power lines stereo speakers and magnets can affect the compass calibration Therefore it is advisable to calibrate the compass if your Suunto DX has been exposed to these fields NOTE When traveling overseas it is recommended that you recalibrate the compass at the new location before using it NOTE Remember to hold the Suunto DX level during the calibration process 35 To calibrate the compass HOLD THE DEVICE LEVEL AND SLOWLY ROTATE THE UNIT IN A LARGE INFINITY LOOP UNTIL THE DEVICE BEEPS AND TEXT PASSED APPEARS If the calibration fails several times in a row text Try Again appears it is possible that you are in an area with sources of magnetism such as large metal objects power lines or electr
82. ue calculation model Suunto Fused RGBM algorithm developed by Suunto and Bruce R Wienke BSc MSc PhD 15 tissue compartments Tissue compartment halftimes for nitrogen 1 2 5 10 20 40 80 120 160 240 320 400 480 560 and 720 min The on gassing and off gassing halftimes are the same Tissue compartment halftimes are divided by a constant factor to obtain helium halftimes Reduced gradient variable M values based on diving habit and dive violations The M values are tracked up to 100 hours after a dive The EAN and oxygen exposure calculations are based on recommendations by R W Hamilton PhD and currently accepted exposure time limit tables and prin ciples 118 Battery One 3 V lithium battery CR 2450 Battery storage time shelf life Up to three years Replacement Every years or more often depending on dive activity Life expectancy at 20 C 68 F e Odives year gt 2 years e 100 dives year gt 1 5 years e 300 dives year gt 1 year Transmitter battery One 3V lithium battery 1 2AA O ring 2 00 mm x 2 00 mm 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 The length of the dives The conditions in which the u
83. ute 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 WHEN STOP IS DISPLAYED MAKE A RECOMMENDED SAFETY STOP FOR 3 MINUTES The Recommended Safety Stop as the name implies is recom mended If it is ignored there is no penalty applied to the following surface intervals and dives 74 5 11 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 Fused 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 WHEN CEILING AND STOP ARE DISPLAYED MAKE A ONE MINUTE MANDATORY SAFETY STOP IN THE DEPTH ZONE BETWEEN 6 M AND 3 M You must not ascend shallower than 3 m 10 ft with the Mandatory Safety Stop warning on If you
84. 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 Abbreviation for patent foramen ovale lt 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 affected by residual nitro gen absorbed during previous dives The amount of excess nitrogen remaining in a diver after one or more dives SCR Semi closed Circuit Rebreather scuba that recycles a portion of exhaled gas Any self contained underwater life support system Abbreviation for surface interval time 133 Surface interval time Tissue group Trimix UHMS Whole body toxicity 134 Elapsed time between surfacing from a dive and beginning a descent for the subsequent repetitive dive Theoretical concept used to model bodily tissues for the construction of decompression tables or calculations A breathing gas mix of helium ox
85. ving 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 38 5 1 The Suunto Fused RGBM Suunto Fused RGBM is an expanded version of the Suunto Technical RGBM It addi tionally incorporates Dr Bruce Wienke s FullRGBM which is the most complete bubble model in existence today As the FullRGBM developed by Dr Wienke is intended only for deep decompression dives the Suunto Fused RGBM utilizes Suunto Technical RGBM for lt 40m dives Suunto Fused RGBM can thus adapt equally well to both re creational and technical diving and it is also suitable for diving on rebreathers Func tionality of Suunto Fused RGBM has been validated and verified to the depth of 150 m 491 ft The Suunto DX uses traditional recommended safety stops as well as deep stops 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 5 2 Emergency ascents If you dive no deco using only air or nitrox follow these steps 1 Assess the situation calmly and then m
86. y 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 service center or call Suunto Contact Center 358 2 284 1160 national or premium rates may apply Limitation 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 128 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 129 GLOSSARY Altitude dive Ascent rate ASC RATE Ascent t
87. ygen 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 SUUNTO CUSTOMER SUPPORT yy www suunto com support www suunto com mysuunto INTERNATIONAL AUSTRALIA AUSTRIA CANADA FINLAND FRANCE GERMANY ITALY JAPAN NETHERLANDS RUSSIA SPAIN SWEDEN SWITZERLAND UNITED KINGDOM USA www suunto com SUUNTO Suunto Oy 10 2012 358 2 284 1160 1 800 240498 toll free 0720883104 1 800 267 7506 toll free 02 284 1160 0481680926 08938038778 0294751965 03 6831 2715 0107137269 4999187148 911143175 0850685486 0445809988 02036080534 1 855 258 0900 toll free Suunto is a registered trademark of Suunto Oy All Rights reserved
88. ymbol 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 strap and your wrist 111 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 service center 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 may 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

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