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Suunto Gekko User's Guide

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2. 9 tissue compartments Tissue compartment halftimes 2 5 5 10 20 40 80 120 240 and 480 min utes on gassing The off gassing halftimes are slowed down Reduced gradient variable values based on diving habit and dive violations The 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 principles Battery One 3 V lithium battery CR 2450 K5597 and O ring 1 78 mm x 31 47 mm 70 ShA 5664 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 0 dives y gt 2 years 100 4 gt 1 5 years 300 dives y gt 1 year The following conditions have an affect on the expected battery lifetime length of the dives The condition in which the unit is operated and stored e g temperature cold conditions Below 10 C 50 F the expected battery lifetime is about 50 75 of that at 20 C 68 F The use of the audible alarms 57 quality of the battery some lithium batteries may exhaust unexpect edly which cannot be tested in advance time the dive computer has been stored until it gets to the customer The battery is installed into the unit at the factory NOTE Low temperature or an inter
3. 29 3 5 AT THE SURFACE SUUNTO 3 5 1 Surface Interval An ascent to an y depth shallower than 1 2 m 4 ft will cause the DIVING display to be replaced by the SURFACE display giving the following information Fig 3 26 maximum depth of last dive in meters ft Fig 3 26 Surface display You have surfaced from a 18 present depth in meters ft minute dive which maxi 2 2782 5 A mum depth was 20 0 m 66 no flying warning indicated by an airplane icon ft The present depth is 0 0 Table 3 3 m 0 ft Airplane symbol indicates that you should Altitude Adjustment setting not fly and Diver Attention Personal Adjustment setting Symbol indicates that you should prolong your surface Diver attention symbol indicates surface inter interval time because of val time should be prolonged Table 3 3 a STOP label for 5 min if the Mandatory Safety Stop was violated if the decompression ceiling was violated Error Mode Fig 3 29 Table 3 3 current temperature with C for Centigrade or F for Fahrenheit dive time of last dive in minutes shown as DIVE TIME Or when the TIME button is pressed the current time shown as TIME instead of the Fig 3 27 Surface interval DIVE TIME Surface time display Press ing TIME button once will the surface time in hours and minutes show surface time display rated by a c
4. 3 1 1 Activation and Prechecks The dive computer will actvate if submerged deeper than 0 5 m 1 5 ft However it is necessary to turn on the Dive Mode before diving to check the altitude and personal adjustment settings battery condition oxygen settings etc Press the SMART Mode but ton to activate the instrument After activation all display elements will turn on showing mostly figure 8 s and graphi cal elements Fig 3 1 A few seconds later the battery power indicator is shown and the buzzer is activated Fig 3 2 display a b c or d depending on the battery voltage If set to Air mode the screen will enter the Surface mode Fig 3 3 and if set to Nitrox mode the essential oxygen parameters are shown with the text NITROX Fig 3 20 before the Surface mode trita i O 4 88 Aao time 1 Vi FA orons FE DIVE TIME ONS tea Fig 3 1 Startup I All seg ments shown 2 2 SUUNTO N ye Fig 3 2 Startup II Battery power indicator 15 16 Fig 3 3 Startup III Surface mode Depth and dive time are zero current tempera ture 20 C Pressing TIME button activates alternative display of current time Fig 3 4 Low Battery Warning Battery symbol indicates that the battery is low and battery replacement is recommended
5. DIVE Fig 3 8 Bookmark activa tion An annotation Book mark is placed in the profile memory during a dive by pressing PLAN button Note Logbook symbol Fig 3 9 A three minute Rec ommended Safety Stop Fig 3 10 Ascent Rate Indi cator Three segments 21 3 3 3 Consumed Bottom Time CBT The available no decompression stop time is also shown visually in the multi function bar graph on the left side of the display Fig 3 7 and 3 8 When your available no decompression time decreases below 200 minutes the first lowest bar graph segment appears As your body absorbs more nitrogen more sgments start to appear Green Zone As a safety precaution Suunto recommends you should maintain the no decompression bar graph within the green zone Segments start to appear when the available no decompression time decreases below 100 80 60 50 40 30 and 20 minutes Yellow Zone As the bars reach the yellow zone your no decompression stop time is less than 10 or 5 minutes and you are getting very close to no decompression limits At this point you should start your ascent towards the surface Red Zone As all of the bars appear red zone your no decompression stop time has become zero and your dive has become a decompression stop dive for more information see section 3 3 5 Decompression dives 3 3 4 Ascent Rate Indicator The ascent rate is sho wn graphically along the right side of the display as f
6. NO DEC TIME PLAN Fig 3 5 Dive Planning Planning mode is indicated by PLAN text No decom pression time limit at 30 0 m 100 ft is 14 minutes in mode At this time perform your prechecks making sure that e the instrument operates in the correct mode and provides a complete display Air Ni trox modes e low battery indicator is not on e the altitude and personal adjustment set tings are correct e the instrument displays correct units of measurement Metric Imperial e the instrument displays correct temperature and depth 0 0 m 0 ft the buzzer beeps And if set to Nitrox mode refer to chapter 3 4 Diving in Nitrox mode make sure that e the oxygen percentage is adjusted accord ing to the measured Nitrox blend in your cylinder e the oxygen partial pressure limit is set cor rectly The dive computer is now ready for diving 3 1 2 BATTERY INDICATION 3 1 2 1 Battery Power Indicator This dive computer has a unique graphic Battery Pwer Indicator designed to you an advance notice of impending need to change the battery The Battery Power Indicator can always be seen when the Dye Mode is activated The following Table and Figure show the various warning levels TABLE 3 1 BATTERY POWER INDICATOR Display Operation Figure 3 2 BAT Normal full battery a 4 segments OK BAT Normal battery power is getting b 3 segments low or the temperature is
7. result the dive computer adjusts its mathematical model according to the entered Personal Adjustment Mode giving shorter no decompression times see section 6 1 Operating Principles Table 6 1 and 6 2 TABLE 3 5 PERSONAL ADJUSTMENT RANGES Personal Symbol iti Desired mode on display Condition tables PO Ideal condition Default Some mentioned factors or conditions exist Progressively more P2 Several mentioned factors conservative or conditions exist 35 3 8 ERROR CONDITIONS The dive computer has w arning indicators that alert the user to react to certain situations that would significantly increase the risk of DCI If you do not respond to its warnings the dive computer will enter an Error Mode indicating that the risk of DCI has greatly increased If you understand and operate the computer sen sibly it is very unlikely you will ever put the instrument into the Error Mode OMITTED DECOMPRESSION The Error Mode results from omitted decompression i e 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 will enter a permanent Error Mode The instrument will continue to function normally if you descend below the ceiling within this three minute period Once in the permanent Error Mode only the ER w arning is shown in the center window The dive computer
8. users resorts logs and sports The information published on the SuuntoSports com contains internal links so that you do not always have to search for the information from the v ery begin ning For example if you view a description of a resort you can follow the links and view the resort information sender personal information logs related to the resort and charts created from the logs if the sender has agreed to this informa tion being made public My Suunto The My Suunto section of the site is meant for your personal information You can store information about yourself your Suunto computer your sporting and training activities etc When you upload your personal logs to SuuntoSports com they are 60 displayed in your personal information Here you can also manage them and decide if they can be presented to all other community users or just to limited groups When you have uploaded logs to SuuntoSports com you can create charts from the dive related data in the logs You can also publish your logs and compare them with other users logs The My Suunto section also contains a pesonal calendar that you can use to mark personal events and other useful information Communities In the Communities section SuuntoSports com users can form or search groups and manage their own groups For example you can create a group for all your diving friends and share information about each other s trips give advice and discuss wher
9. 39 4 1 2 Dive History Memory 2 HISTORY cece eee 42 4 1 3 PC Settings Mode 3 PC SET i 42 4 2 SET MODES 4 SET 2006009 iii 43 4 2 1 Dive Computer Model Settings 1 SET MODEL 43 4 2 1 1 Oxygen 43 4 2 2 Alarm settings 2 SET ALMS eee 43 42 2 1 Dive Time Alarm Setting iii 44 4 2 2 2 Maximum Depth Alarm Setting iii 44 4 2 3 Setting Time and date 3 SET 44 4 2 4 Personal adjustments 4 SET ADJ iii 44 CARE AND MAINTENANCE 46 5 1 IMPORTANT INFORMATION 46 5 2 CARE OF YOUR DIVE COMPUTER n 46 5 4 WATER RESISTANCE INSPECTION n 47 5 5 BATTERY 25206 1 48 TECHNICAL ana 52 6 1 OPERATING PRINCIPLES ccisssscsceccicosessnsstsvsescossovesosepsenesseess 52 6 2 SUUNTO REDUCED GRADIENT BUBBLE 54 6 3 OXYGEN EXPOSURE 55 6 4 TECHNICAL SPECIFICATION 55 we WARRANTY lierna 59 60 8 1 SYSTEM REQUIREMENTS 60 8 2 SUUNTOSPORTS COM SECTIONS in 60 8 3 GETTING STARTED 61 GLOSSARY cirie ai 62 1 INTRODUCTION Congratulations on
10. 9 11 9 8 9 8 6 36 11 9 8 9 8 6 8 6 5 39 9 8 6 A 6 5 6 5 4 42 7 6 5 6 5 4 5 4 4 45 6 5 5 5 5 4 5 4 3 52 TABLE 6 2 NO DECOMPRESSION TIME LIMITS MIN FOR VARIOUS DEPTHS FT FOR THE FIRST DIVE OF A SERIES Beak Personal Mode Altitude Mode iff P0 A1 P0 A2 P1 A0 P1 A1 P1 A2 2 0 P2 A1 P2 A2 30 160 127 160 127 93 127 93 73 40 120 86 65 86 65 53 65 53 43 50 69 56 41 56 41 34 41 34 28 60 50 38 29 38 29 25 29 25 20 70 36 29 23 29 23 20 23 20 15 80 28 23 19 23 19 15 19 15 11 90 22 18 15 18 15 11 15 11 9 100 17 14 11 14 11 9 11 9 7 110 13 11 9 11 9 7 9 7 6 120 10 9 8 9 8 6 8 6 5 130 9 7 6 7 6 5 6 5 4 140 7 6 5 6 5 4 5 4 4 150 6 5 4 5 4 4 4 4 3 ALTITUDE DIVING The atmospheric pressure is lover at high altitudes than at sea leel After traveling to a higher altitude the diver will have additional nitrogen in his body compared to the equilibrium situation at the original altitude This additional nitrogen is released gradually in time and equilibrium is reached It is recommended that you acclimate to the new altitude by waiting at least three hours before making a dive Before high altitude di ving the instrument must be set to the Altitude Adjust ment mode to adjust the calculations for the new altitude The maximum partial pressures of nitrogen allo wed by the mathematical model of the di ve computer are reduced according to the lower ambient pressure As a result the allowed no decompression sto
11. Be very careful not to get any dirt on the o ring or its sealing surfaces 13 Carefully press the lid onto the battery compartment with your thumb It is better to press down the lid down one side first this minimizes entrapped air and it is thus easier to hold down the lid Make sure that the O ring is not at any point protruding out on the edge 14 Put your other thumb through the locking ring Press this thumb firmly against the lid and release the other one Make sure that the lid is pressed completely down 15 Turn the locking ring counterclockwise with your free thumb and fingers until it snaps into its locked position 16 The dive computer should now active it s timekeeping mode and show time 18 00 6 00 PM and date SA 01 01 Activate the instrument Check that All display segments work The low battery warning is off The buzzer beeps and backlight works All the settings are correct Reset if necessary 17 Install the dive computer back into the console or boot and reassemble the strap The instrument is now ready for use Wrist model Assembling into the boot First insert the longer strap in its hole in the front of the boot and then the dive computer into its cavity in the boot starting at the back end Then snap also the long strap end of the instrument into the boot Stretch the boot as needed Assemble the shorter part of the strap Use the spring bar tool or small screwdriver to compress the sprin
12. COPYRIGHT This publication and its contents are proprietary to Suunto Oy Suunto Wristop Computer Suunto Gekko Replacing Luck and their logos are registered or unregistered trademarks of Suunto Oy All rights reserved While we have taken great care to ensure that information contained in this documentation is both comprehensive and accurate no warranty of accuracy is expressed or implied Its content is subject to change at any time without notice Printed in Finland 03 2009 Esa Print Oy 195396 SUUNTO TWO YEAR WARRANTY This product is warranted to be free of defects in material and or workmanship to the original owner for the above noted period does not include battery life Keep a copy of the original purchase receipt and make sure to get this warranty card stamped at the place of purchase The warranty originates from the date of purchase All warranties are limited and are subject to the restrictions given in the instruction manual This warranty does not cover the damage to the product resulting from improper usage improper maintenance neglect of care alteration improper battery replacement or unauthorized repair Suunto s div e computers and wristop computers can be r egistered online a t www suunto com Model of Serial Computer number Date of purchase Place of purchase Store name Store City Store Country Store stamp with date of p
13. NOTE The Nitrox settings will revert to default set tings 21 air and PO 1 4 bar after approximately 2 hours 4 2 2 Alarm settings 2 SET ALMS In the alarm settings you can set a di ve time alarm and a maximum depth alarm To enter Alarm settings select MODE SET SET ALARMS Fig 4 18 SUUNTO Fig 4 17 Setting Nitrox parameters Oxygen percent age is 32 oxygen partial pressure limit is 1 4 bar The equivalent maximum depth is displayed as 32 8 m 107 ft Press scroll buttons to change oxygen percentage and to set oxygen partial setting value Accept settings by pressing MODE OK Fig 4 18 Set Alarms Mode 43 BERKS SUUNTO Fig 4 19 Setting Dive Time Alarm Press scroll buttons to change alarm on off and to set dive time value genna SUUNTO Fig 4 20 Setting Maximum Depth Alarm Press scroll buttons to change alarm on off and to set maximum depth value Fig 4 21 Time Setting Mode 44 4 2 2 1 Dive Time Alarm Setting The instrument has one Di ve Time Alarm Setting which can be used for several purposes to add to your diving safety The alarm can be set for example to your planned bottom time Set the Dive Time alarm ON or OFF and the alarm time from 1 to 999 minutes Fig 4 19 4 2 2 2 Maximum Depth Alarm Setting You can set one depth alarm in the dive computer The depth alarm is set to 40 m 131 ft at the factory but
14. PO value You should immediately ascend above the PO depth limit Fig 3 23 WARNING WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE MUM LIMIT IS REACHED YOU MUST IMMEDIATELY ASCEND UNTIL THE WARNING STOPS BLINKING Failure to take action to reduce oxygen exposure after the w arning is given can rapidly increase the risk of oxygen toxicity and the risk of injury or death 3 7 HIGH ALTITUDE DIVES AND PERSONAL ADJUSTMENT The dive computer can be adjusted both for dving at altitude and also to increase the conservatism of the mathematical nitrogen model 3 7 1 Altitude Adjustment When programming the instrument for the correct altitude you need to select the correct Altitude Mode according to Table 3 4 The dive computer will adjust its mathematical model according to the entered altitude mode gi ving shorter no decompression times at higher altitudes see Section 6 1 Operating Principles Table 6 1 and 6 2 The entered Altitude Adjustment Mode is indicated by mountain symbols 0 Al TABLE 3 4 ALTITUDE ADJUSTMENT RANGES Altitude Symbol Altitude mode on display range 0 AAN 0 300 m 0 1000 ft A1 300 1500 1000 5000 ft 2 1500 3000 5000 10000 one mountain orA2 two mountains Section 4 2 4 PersonalAdjustments describes how the Altitude Mode is adjusted Traveling to a higher elevation can temporarily cause a change in the equilibr
15. STEP 1 Assess the situation calmly and then move promptly to less than 18 m 60 ft STEP 2 At 18 m 60 ft slow down your ascent rate to 10 m min 33 ft min and move to a depth between 3 and 6 meters 10 to 20 ft STEP 3 Stay there as long as you assess your air supply will safely alte After reaching the surface stay out of the water for at least 24 hours 1 1 2 Dive Computer Limitations While the dive computer is based on current decompression research and technol ogy 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 mathemati cal models which are intended to serv e as a guide to reduce the probability of decompression illness 1 1 3 Nitrox Diving with nitrox provides the diver with an opportunity to increase bottom times or reduce the risk of decompression illness by reducing the nitrogen content in the breathing gas mix 10 However when the gas mix is altered the oxygen content of the mix is generally increased This increase exposes the diver to an oxygen toxicity risk not usually considered in recreational diving In order to manage this risk the dve computer tracks the time and intensity of the oxygen exposure and provides the diver with information to adjust the dive plan in order to maintain oxygen exposure within reasonably safe limits
16. Service your dive computer every two years or after 200 dives whichever comes first by an authorized dealer or distributor This service will include a general operational check replacement of the battery and water resis tance check The service requires special tools and training Therefore it is advisable to contact an authorized SUUNTO dealer or distributor for bien nial service Do not attempt to do any service that you are not sure about how to do e Should moisture appear inside the case or battery compartment have the instrument checked immediately by your SUUNTO dealer or distributor e Should you detect scratches cracks or other such flaws on the display that may impair its durability have it replaced immediately by your SUUNTO dealer or distributor e Check the spring bars holding the strap and the buckle for flaws If the flex ibility of the spring bars has reduced have them replaced immediately by your SUUNTO dealer or distributor Wash and rinse the unit in fresh water after every use e 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 adhesive agents paint acetone alcohol etc Chemical reactions with such agents will damage seals case and finish Store your dive computer a dry place when you not using it d
17. a depth gauge submersible pressure gauge timer or watch and ha ve access to decompression tables whene ver diving with the dive computer WARNING PERFORM PRECHECKS Always activate and check the de vice before diving in order to ensure that all Liquid Crystal Display LCD segments are completely displayed that the de vice has not run out of battery po wer and that the oxygen altitude and personal adjustments are correct Also exit the PC Settings PC SET sub mode before diving as the computer does not au tomatically revert to Dive mode from the PC Settings mode WARNING YOU ARE ADVISED TO AVOID FLYING ANY TIME THE COMPUTER COUNTS DOWN THE NO FLYING TIME ALWAYS ACTIVATE THE COMPUTER TO CHECK THE REMAINING NO FLY TIME PRIOR TO FLYING The computer goes into the stand by display automatically 5 minutes after the dive has ended The stand by display shuts of after two hours Flying or traveling to a higher altitude within no fy time can greatly increase the risk of DCL Review the recommendations given by Diver s Alert Network DAN in chapter 3 5 3 FlyingAfter Diving There can never be a flying after diving rule that is guaranteed to completely prevent decompression illness WARNING 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 ma
18. cleanliness is amp tremely important Even the smallest dirt particles may cause a leakage when you dive BATTERY KIT The battery kit includes a 3 0 coin type lithium cell battery and a lubricated O ring When handling the battery do not make contact with both of the poles at the same time Do not touch the surfaces of the battery with your bare fingers TOOLS REQUIRED A flat 1 5 mm screwdriver or a special tool for spring bars K5857 Soft cloth for cleaning e Needlenose pliers or large screwdriver for turning securing ring BATTERY REPLACEMENT The battery and the buzzer are located in the back of the instrument in a separate compartment the parts of which are sho wn in Fig 5 1 To change the battery follow the procedure below 1 Remove the computer from the console or boot Wrist model e Disassemble the shorter part of the strap with a flat 1 5 mm screwdriver or a special tool for spring bars The longer part of the strap may stay on but removing it may ease the work later on Console model 1 Remove the dive computer from the console according the instructions of the console 2 Thoroughly rinse and dry the computer 3 Open the securing ring of the battery compartment lid by pushing it down and rotating it clockwise You may use a pointed nose pliers or a small screwdriver as an aid in the rotating Put the pliers ends into the holes of the securing ring or the screwdriver onto the side of the right to
19. for further information Fig 4 10 Logbook page I Press SMART Select but ton once to be able to scroll between different dives Fig 4 11 Logbook end of the memory END text is displayed between oldest and the most recent dive Fig 4 12 Dive History Memory Mode 2 HIS TORY 41 42 Fig 4 13 Dive History information Total number of dives dive hours and maximum depth SUUNTO Fig 4 14 Data Transfer mode 3 PC SET SUUNTO Fig 4 15 Setting Options 4 SET 4 1 2 Dive History Memory 2 HISTORY The Dive History is a su mmary of all the ives recorded by the dive computer To enter the Dive History Memory Mode select MODE MEMOR Y HISTORY Fig 4 12 The following information will be sho wn on the display Fig 4 13 e the maximum depth ever reached e total accumulated dive time in hours e total number of dives The Dive History Memory can hold a maximum of 999 di ves and 999 di ving hours When these maximum values are reached the counters will start again from zero 4 1 3 PC Settings Mode 3 PC SET Although the Gekko does not support PC davnload the tissue calculations can be reset and all settings returned to factory defaults using a PC Interfice cable and special software This feature is useful for dive shops and their rental units only The software is not available to the general public T
20. is blank e To activate the alternative display s scroll down the options V decrease The dive computer is controlled with the SMART MODE On Select OK Quit and the PLAN A and TIME W push buttons and with the w ater contacts as follows Activation press the SMART On button or immerse the instrument in water for five 5 seconds Dive Planning in the Surf ace Mode press the PLAN s button Menu Modes press the SMART MODE b utton 13 Fig 2 3 Depth sensor water data transfer contacts B Fig 2 4 Active water contacts are indicated by the text AC 14 2 3 WATER CONTACTS The water contacts control the automatic activation of the Dive Mode The water and data transfer contacts are located on bottom of the case Fig 2 3 When submerged the water contacts are connected to the push buttons which are the other pole of the water contact by the conductivity of the water The AC text Active Contacts Fig 2 4 will appear on display The AC text will be sho wn until the w ater contact deacti vates or the di ve computer enters the Di ve Mode automatically 3 DIVING WITH THE GEKKO This section contains instructions on how to operate the dive computer and interpret its displaysYou will find that this dive computer is easy to use and read Each display sho ws only the data rele vant to that specific diving situation 3 1 BEFORE DIVING
21. the Planning Mode will increment to the higher number if another dive is made 3 5 3 Flying After Diving The no flying time is sho wn in the center windo w next to the airplane image Flying or tra velling to a higher altitude should be a voided at any time the computer counts down the no flying time Fig 3 28 Surface interval no flying time Pressing TIME button twice will show no flying time indi cated by an airplane symbol 31 32 Fig 3 29 Surface Mode after a violated decompression dive Er symbol indicates that you have violated the ceiling for more than three minutes You must not dive again for at least 48 hours NOTE The airplane symbol is not sho wn on the stand by display You should always activate the dive computer and check that the airplane symbol is not displayed prior to flying The no flying time is al ways at least 12 hours or equivalent to the so called desaturation time if longer than 12 hours In the permanent Error mode the no fl ying time is 48 hours Divers Alert Network DAN recommends the fol lowing on no flying times 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 2400 m 8000 ft Divers who plan to make daily multiple dives for several days or make dives that require de compression stops should take special pre
22. will depend on the specific dive situation To get the most from the safety benefits be sure to read the summary of the Re duced Gradient Bubble Model in chapter 6 2 1 1 SAFETY PRECAUTIONS Do not attempt to use the dive computer without reading this instruction manual 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 di ve computer contact your SUUNT O dealer before di ving with the dive computer Always remember that YOU ARE RESPONSIBLE FOR YOUR OWN SAFE TY When used properly the dive computer is an outstanding tool for assisting prop erly trained certified divers in planning and e xecuting sport dives It is NOT A SUBSTITUTE FOR CERTIFIED SCUBA INSTRUCTION including training in the principles of decompression Diving with enriched air mixtures nitrox poses the user to risks diferent from those associated with diving with standard air These risks are not ob vious and require training to understand and a void Risks include possible serious injury or death Do not attempt to di ve with gas mix other than standard air without fi rst receiving certified training in this specialty 1 1 1 Emergency Ascents In the unlikely event that the dive computer malfunctions during a di ve follow the emergency procedures pro vided by your certifi ed dive training agenc y or alternatively
23. you are able to adjust it according your personal preference or switch it off The depth range can be set from 3 0 m to 100 m 9 ft to 328 ft Fig 4 20 4 2 3 Setting Time and date 3 SET TIME To enter the Time Setting Mode select MODE SET SET TIME Fig 4 21 After entering this mode you are able to select between 12 h and 24 hour time formats and set the correct time by using the SMAR MODE and scroll buttons Fig 4 22 After this you are able to set the correct year month and day in this order Fig 4 23 NOTE The day of the week is automatically calculated in accordance with the date The date can be set within the range of Jan 1 1990 to Dec 31 2089 4 2 4 Personal adjustments 4 SET ADJ To enter the Personal adjustments mode select MODE SET SETADI Fig 4 24 The adjustments are altitude personal and dive computer units The current Altitude and PersonalAdjustment modes are shown when diving and at the surfice If the mode does not match the altitude or personal conditions see section 3 7 High Altitude Dives and Personal Adjustment it is imperati ve that you enter the correct selection before di ving Use the Altitude Adjustment to select the correct altitude mode Fig 4 25 Use the Personal Adjustment to add an extra level of conservatism Fig 4 26 Use the units adjustment to choose choose between metric and imperial units Fig 4 27 ting Mode Fig 4 26 Setting
24. 9 Diving accessories Depth gauges and combined depth and time measuring devices Functional and safety requirements test methods is a European diving depth gauge standard The GEKKO is designed to comply with this standard ISO 9001 SUUNTO Quality Assurance System is certified by Det Norske Veritas to be according to the ISO 9001 in all SUUNTO operations Quality Certificate No 96 HEL AQ 220 SUUNTO Oy does not assume an y responsibility for losses or claims by third parties which may arise through the use of this device Due to continuous product development the GEKKO is subject to change without notice WARNING READ THIS MANUAL Carefully read this instruction manual in its entirety paying close attention to all varnings listed below including section 1 1 Safety Precautions Make sure that you fully understand the use displays and limita tions of the dive computer because any confusion resulting from neglecting to follow this instruction manual or from improper use of this device may cause a diver to commit errors that may lead to serious injury or death WARNING NOT FOR PROFESSIONAL USE Suunto dive computers are intended for recreational use only The demands of commercial or professional di ving may expose the diver to depths and exposures that tend to increase the risk of decompression illness DCI Therefore Suunto strongly recommends that the device be not used for commercial or professiona
25. In addition to the physiological effects of enriched air on the body there are op erational considerations to be addressed when handling altered breathing mixes Elevated concentrations of oxygen present a fre or explosion hazard Consult the manufacturer of your equipment in regards to its compatibility with nitrox 2 GETTING ACQUAINTED 2 1 FUNCTIONS The Suunto GEKKO can be set to function as a re gular air dive computer or as a nitrox dive computer The GEKKO features tw o dive computer models AIR NITR OX three main operating modes TIME ST AND BY SURFACE DIVING tw o menu based main modes MEMORY SET and seven menu based submodes freview separate Quick Reference Guide You can scroll through the modes using the push bttons The mode indicator at the left side and the mode tet at the bottom of the display indicate the selected mode The timekeeping display is the default display of the instrument Fig 2 1 If a button is not pressed within 5 minutes the dive computer beeps and returns to the timekeeping display automatically except in Diving mode The timekeep ing display shuts off after two hours but pressing the PLAN or TIME button activates it GEKKG SUUNTO Making the GEKKO Personal For best use of the GEKKD take some time and male it YOUR computer Set the correct time and date Read this manual Set dive alarms and make all the other settings listed in the introduction in this manual Inst
26. Personal adjustment Press scroll buttons to change personal mode LI gt d Fig 4 25 Setting Altitude adjustment Press scroll buttons to change altitude mode Fig 4 27 Setting Metric Imperial units 45 46 5 CARE AND MAINTENANCE This SUUNTO dive computer is a sophisticated precision instrument Though designed to withstand the rigors of scuba diving you must treat it with proper care and caution as any other precision instrument 5 1 IMPORTANT INFORMATION WATER CONTACTS AND PUSH BUTTONS Contamination or dirt on the vater 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 w ater contacts and push b uttons are kept clean If the water contacts of the instrument are active AC text remains on display or the Dive Mode activates on its wn the reason for this is probably contamination or invisible marine growth that may create an unw anted electric current between the contacts It is important that the di ve computer is carefully washed in fresh w ater after the day 5 diving is completed The contacts can be cleaned with fresh w ater and if necessary a mild deter gent and a soft brush Sometimes it might be necessary to remo ve the instrument from the protecti ve boot for cleaning 5 2 CARE OF YOUR DIVE COMPUTER NEVER try to open the case of the dive computer e
27. S iii 19 3 2 1 Recommended Safety 19 3 2 2 Mandatory Safety STOP rasata aaa 19 3 3 DIVING WITH 20 3 3 1 Basic Dive 20 3 3 2 B00KMAfk raison 21 3 3 3 Consumed Bottom Time CBT 22 334 Ascent Rate Indicator iui 22 3 3 5 Decompression diVes s ccsaceicseacvesseass asessvacasinedegesaeeeedcaeaedsiasteze 23 3 4 DIVING IN NITROX MODE 27 IAN Before Diving rpa ian 27 SA 22Oxy sen DISPLAYS 28 3 4 3 Oxygen Limit Fraction OLF ii 29 32AT THE SURFACE nascano iaia 30 3 91 Surface Interval 30 3 9 2 Dive NUMDEMNG irritati 31 35 3 After DIVINS 31 3 6 AUDIBLE AND VISUAL ALARMS n 33 3 7 HIGH ALTITUDE DIVES AND PERSONAL 34 3 7 1 Altitude 34 3 7 2 Personal 35 3 8 ERROR CONDITIONS siscosissesecissiesas cocsscossssassvessescestesessacosanesseees 36 MENU BASED MODES oes 22 37 4 1 MEMORY FUNCTIONS 1 38 4 1 1 Logbook and Dive Profile Memory 1
28. SUUNTO GEKKO USER S GUIDE SUUNTO Quick reference guide Gekko anjen uoyng 9g anjeA uong 10205 uoyng Aejdsip uoyng suoyng 10105 y 10 40 29 pu UO apo feg Wuon Neon Alepeg spol uong euosiad y 10 S10 291pu 9 apo UBIH suoneJado a Vf 5 941 I I I dojs I 5 6101 I H 2 D hi 4 1 UONIEIY yu uoyog apoyy Aedsiq juaund ude 19057 CS uogueny said MOIS amp 152 4 NNNS Joyeolpuy dojs azes ujdaq juasald dos Ajayes ISNIN 40 9 PU Nd WY aunssald ee
29. able to have a look at the memories or make desired settings use the the arrow up down buttons The SMART button is used to Quit or to con firm the settings OK If you do not press any of the buttons for 5 minutes while in a Menu based mode the instrument beeps and returns to the timekeeping display EXIT QUIT By pressing the SMAR T button for more than 1 second any menu based function or submode can be quit and the dive computer will return directly to the Dive Mode Fig 4 1 Main menu based Mode options 2 MODE Fig 4 2 Memory option 1 MEMORY Gerko SUUNTO Fig 4 3 Set option 2 SET 37 38 Fig 4 4 Memory options 3 MEMORY Fig 4 5 Logbook option 1 LOGBOOK Fig 4 6 Logbook page I Scroll different pages of specific dive THE LIST OF THE MENU BASED MODES 1 MEMORY FUNCTIONS 1 MEMORY 1 Logbook and Dive Profile Memory 1 LOGBOOK 2 Dive History Memory 2 HISTORY 3 PC Settings 3 PC SET 2 SET MODES 2 SET 1 Air or Nitrox Oxygen settings 1 MODEL 2 Set Alarms 2 SET ALMS 1 Maximum depth alarm setting 2 Dive time alarm setting 3 Set time and date 3 SET TIME 1 Time display time date and year settings 4 Personal Adjustments 4 SET ADJ 1 Altitude adjustment 2 Personal adjustment 3 Dive computer units setting NOTE The menu based modes cannot be activated until 5 minutes after th
30. al adjustment feature to affect decompression calculations or reduce the PO setting to af fect oxygen e xposure according to the entered O and PO values CEILING Fig 3 19 Ceiling and Floor 106 Zones The Recommended A and Manadatory Safety Stop 6m 18ft zone lies between 6m and 3m 20 ft and 108 A FLOOR 27 Fig 3 20 Nitrox display Maximum depth based on set 02 21 and PO2 1 4 bar is 54 1 m 177 ft Fig 3 21 Surface display in the Nitrox mode Fig 3 22 Diving in Nitrox mode The 02 is set to 32 28 NOTE As a safety precaution the oxygen calculations in the computer are made with an oxygen percentage of 1 setO DEFAULT NITROX SETTINGS In the NITROX Mode when set to standard air 21 O the instrument can be used as an air dive computer It remains in this air mode until the O 2 setting is adjusted to ary other percentage of oxygen 22 50 NOTE The computer will automatically revert to the air 21 02 setting when a w dive series is started if it is not set to ay other mix during the last two hours When the oxygen percentage is set for air the computer will retain this setting Manually entered values for oxygen percentage are retained for about two hours after the setting if a die series has not started In case a dive series is started the set alue is retained until a dive series is started or a new value is entered
31. alculations according to the personal adjustment you select The pattern and speed of decompression at the surf ace is adjusted according to micro bubble influence Also on repetitive dives adjustment may be applied to the maximum allo wable nitrogen overpressure in each theoretical tissue group Depending on circumstances Suunto RGBM will adapt the decompression obliga tions by doing any or all of the following Reducing no decompression stop dive times Adding Mandatory Safety Stops Increasing decompression stop times Advising an extended surface interval Diver Attention symbol Some patterns of diving cumulatively add a higher risk of DCI e g di ves with short surface intervals repetitive dives deeper than earlier ones multiple ascents substantial multiday di ving When this is detected in addition to adapting the decompression algorithm the Suunto RGBM model will in some circumstances also advise with the Diver Attention Symbol review chapter 3 6 that the diver extend the surface interval 54 6 3 OXYGEN EXPOSURE The oxygen exposure calculations are based on currently accepted xposure time limit tables and principles In addition to this the die computer uses several meth ods to conservatively estimate the oxygen exposure These include for example the displayed oxygen exposure calculations are upped to the next higher percentage value for recreational scuba diving the recommended upper limit of 1 4 bar PO is us
32. all the GEKKO in your console or fit it on to your wrist II be LI All this so you know your computer and have it set up as you want it before getting into the water 2 2 PUSH BUTTONS The GEKKO has easy to use push b uttons and an advisory display which guides the userThe SMART Fig 2 1 Timekeeping display Pressing PLAN or TIME button activates display GEKKO The SMART button Men set SCROLL buttons Fig 2 2 Push buttons of the dive computer MODE button is the k ey to the system The two scroll buttons PLAN and TIME are used for scroll ing up and down the menus and to show the alterna tive displays The dive computer is controlled with these three push buttons as follows see Fig 2 2 Press the SMART MODE button To activate the dive computer e change from the Surface Mode to the menu based modes To select confirm or quit submode short press e To immediately exit any submode to the Surface Mode long press Press the arrow up scroll PLAN button To activate the timekeeping display if the display is blank e To activate the Dive Planning in the Surface Mode make a special bookmark in the profile memory during a dive e To scroll up the options A increase Press the arrow down scroll ALTER button e To activate the timekeeping display if the display
33. ally revert to the original display 3 4 3 Oxygen Limit Fraction OLF In addition to tracking the diver s exposure to nitro gen the instrument tracks the e xposure to oxygen if set to Nitrox mode These calculations are treated as entirely separate functions The dive computer calculates separately for Cen tral 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 has 11 sements each representing 10 The OLF bar graph displays only the value of the higher of the two calculations When the OTU value meets and exceeds the CNS value then in addition to displaying its percentage the lowest segment blinks to indicate that the v alue shown relates to OTU Fig 3 25 The oxygen tox icity calculations are based on the f actors listed in section 6 3 Oxygen Exposure Fig 3 23 Oxygen partial pressure and OLF displays There is an audible alarm as oxygen partial pressure is greater than 1 4 bar or set value and or the OLF has reached 80 limit Fig 3 24 Alternative display Pressing TIME button displays current time maximum depth tempera ture CBT and 02 Nour CCLI t DIVE TIME Fig 3 25 The lowest bar graph blinks to indicate that the OLF value shown relates to OTU
34. an audible alarm indicate you should descend to ceiling zone Fig 3 15 Decompression dive below floor Upward pointing arrow blinking ASC TIME label and an audible alarm tell you to ascend Minimum total ascent time including safety stop is 7 minutes Ceiling is at 3m 10 fi Fig 3 16 Decompression dive above floor Upward pointing arrow has disappeared and ASC TIME label has stopped blink ing which means that you are in the decompression range 24 Rather than requiring you to mak e stops at fi xed depths the dive computer lets you to decompress within a range of depths Continuous Decompres sion The ascent time ASC TIME is the minimum amount of time needed to reach the surface in a decompres sion dive It includes the time needed to ascend to the ceiling at an ascent rate of 10 m min 33 ft min plus the time needed at the ceiling The ceiling is the shallowest depth to which you should ascend plus the time needed at the Mandatory Safety Stop if any plus the 3 minute Recommended Safety Stop plus 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 DISPLAYED BY THE IN STRUMENT The ascent time will increase if you remain at depth ascend slower than 10 m min 33 ft min make your decompression stop deeper than at the ceiling These factors will also increase th
35. and equipment profi les in My Suunto section afterwards After the re gistration you will automatically enter the SuuntoSports com home page that introduces the site structure and functional principles Note SuuntoSports com is continuously developed further and its content is subject to change 61 9 GLOSSARY Altitude dive Ascent rate ASC RATE Ascent time ASC TIME Ceiling Ceiling Zone CNS Central Nervous System Toxicity CNS Compartment DAN DCI Decompression Decompression range Decompression illness 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 decompression stop di Abbreviation for ascent time On a decompression stop dive the shallowest depth to which a diver may ascend based on computer nitrogen load On a decompression stop dive the zone between the ceiling and the ceiling plus 1 8 m 6 ft This depth range is displayed with the two arrows pointing toward each other the hour glass icon Abbreviation for Central Nervous System toxicity 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 Central Nervous System toxicity limit fraction Also note Oxygen Limit Fraction See Tis
36. andatory Safety Stop time always includes the three minute Recommended Safety Stop time The total length of the Mandatory Safety Stop time depends on the seriousness of the ascent rate violation You must not ascend shallower than 3 m 10 ft with the Mandatory Safety Stop warning on If you ascend above the Mandatory Safety Stop ceiling a dwnward pointing arrow will appear and a continuous beeping starts Fig 3 14 You should immediately descend to or below the Mandatory Safety Stop ceiling depth If you correct this situation at any time during that dive there are no affects on the decompression calculations for future dives If you continue to violate the Mandatory Safety Stop the tissue calculation model is af fected and the di ve computer shortens the a vailable no decompression time for your next dive In this situation it is recom mended to prolong your surface interval time before your next dive 3 3 DIVING WITH THE GEKKO The GEKKO has two operating modes Air mode for diving with standard air only and Nitrox mode for di ing with oxygen enriched EANx mixtures The Ni trox mode is enabled in the MODE SET MODEL 3 3 1 Basic Dive Data The dive computer will remain in the Surfice mode at depths less than 1 2 m 4 feet At depths greater than 1 2 m the instrument will go into the Di ving mode Fig 3 6 All information on the display is labeled Fig 3 6 During a no decompression stop dive the following
37. at you have measured with your personal Suunto instrument and analyzed with the sport specific PC interface SuuntoSports com offers you a number of features that help you to get the most out of your sport and your Suunto Computer If you already own a personal Suunto sports instrument you can access all sport specifi functions through registration If you do not yet have an instrument you may either log in as a guest or register yourself As a guest you can view and read but registration gives you the right to use other functions and participate to discussions 8 1 SYSTEM REQUIREMENTS SuuntoSports com has the following system requirements e Internet Connection e Modem recommended 56k or faster Browser 4 0 or better Netscape 4 7 or newer e Resolution minimum 800 x 600 best viewed with 1024 x 768 8 2 SUUNTOSPORTS COM SECTIONS SuuntoSports com includes three sections with several functions The following paragraphs describe only the basic functions of SuuntoSports com You can find detailed descriptions of all the site functions and acti vities and step by step in structions for using them from the site Help The Help is available on each page and its icon is located on the right side of the bar dividing the screen The Help is frequently updated as the site develops SuuntoSports com offers several possibilities for searching the information on site In addition to the free search you can search for example for groups
38. ay range 0 99 9 m 328 ft Resolution 0 1 m from 0 to 99 9 m 1 ft from 0 to 328 ft Temperature display Resolution 1 C 1 5 F Display range 9 50 C 9 122 F Accuracy 2 C 3 6 F within 20 minutes of temperature change Calendar Clock Accuracy 25 s month at 20 C 68 F 12 24h display Other displays Dive time 0 to 999 min counting starts and stops at 1 2 m 4 ft depth Surface time 0 to 99 h 59 min Dive counter 0 to 99 for repetitive dives No decompression time 0 to 199 min after 199 Ascent time 0 to 99 min after 99 Ceiling depths 3 0 to 100 m 10 to 328 ft Displays only in Nitrox mode Oxygen 21 50 Oxygen partial pressure display 1 2 1 6 bar depending on the limit set ting Oxygen Limit Fraction 1 110 with 10 resolution bar graph Logbook Dive Profile Memory Recording interval 30 seconds Depth accuracy 0 3 m 1 ft 56 Operating Conditions Normal altitude range 0 to 3000 m 10000 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 tempera ture NOTE Do not leave the dive computer in direct sunlight Tissue Calculation Model Suunto RGBM algorithm developed by SUUNTO and Bruce R Wienke BS MS and PhD
39. cau tions and wait for an extended interval beyond 12 hours before flight Further the Undersea and Hyperbaric Medical Society UHMS suggests divers using standard air cylinders and exhibiting no symptoms of decompression illness wait 24 hours after their last dive to fly in an aircraft with cabin pressure up to 2400 m 8000 ft The only two exceptions to this recommendation are If a diver had less than 2 hours total accumulat ed dive time in the last 48 hours then a 12 hour surface interval before flying is recommended Following any dive that required a decompres sion 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 and the dive computer wait to fly conditions are satis fied 3 6 AUDIBLE AND VISUAL ALARMS The dive computer features audible alarms to advise when important limits are approached or to acknowledge preset alarms A short single beep occurs when dive computer is activated when the dive computer automatically returns to the TIME mode Three single beeps with a two second interval occurs when no decompression dive turns into a decompression stop dive An arrow pointing upwards and the blinking ascent warning ASC TIME will appear Fig 3 15 Continuous beeps for 5 seconds occur when the maximum allowed ascent rate 10 m min 33 ft min is exceeded SLOW and STOP war
40. d USBAXO yooq6o7 ydag 9107 dojs Ajayes ydag dos Mayes uideg dog uoissasduosag uo ydag DEFINITION OF WARNINGS CAUTIONS AND NOTES Throughout this manual special references are made when deemed im portant Three classifications are used to separate these references by their order of importance WARNING 15 used in connection with a procedure or situation that may result in serious injury or death CAUTION is used in connection with a procedure or situation that will result in damage to the product NOTE is used to emphasize important information COPYRIGHT TRADEMARK AND PATENT NOTICE This instruction manual is cop yrighted and all rights are reserv ed It may not in whole or in part be copied photocopied reproduced translated or reduced to any media without prior written consent from SUUNTO SUUNTO GEKKO Consumed Bottom Time CBT Oxygen Limit Fraction OLF SUUNTO Reduced Gradient Bubble Model RGBM Continuous Decompression and their logos are all rgistered or unregistered trademarks of SUUNTO rights are reserved CE The CE mark is used to mark conformity with the European Union EMC directive 89 336 EEC The instruments must be serviced by an authorized dealer every second year or after 200 dives whichever comes first EN 13319 EN 1331
41. e Tissue group Whole Body Toxicity mixture can safely be 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 have the risk for immediate oxygen toxicity 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 af fected by residual nitrogen absorbed during previous dives The amount of excess nitrogen remaining in a diver after one or more dives Abbreviation for surface interval time Elapsed time between surfacing from a dive and be ginning a descent for the subsequent repetitive dive Theoretical concept used to model bodily tissues for the construction of decompression tables or calcula tions Another form of oxygen toxicity which is caused by prolonged exposure to high oxygen partial pressures The most common symptoms are irritation in the lungs a burning sensation in the chest coughing and reduction of the vital capacity Also called Pulmonary Oxygen Toxicity See also OTU 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 dealer 64 5 5 5 NNIN
42. e amount of air required to reach the surface CEILING CEILING ZONE FLOOR AND DECOMPRESSION RANGE When in decompression it is important that you understand the meaning of ceil ing floor and decompression range Fig 3 19 The ceiling is the shallowest depth to which you should ascend when in decompression At this depth or below you must perform all stops ceiling zone is the optimum decompression stop zone It is the zone between the minimum ceiling and 1 8 m 6 ft below the minimum ceiling floor is the deepest depth at which the decompression stop time will not increase Decompression will start when you pass this depth during your ascent 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 The depth of the ceiling and floor will depend on your di ve profile The ceiling depth will be fairly shallow when you enter the decompression mode but if you remain at depth it will more downward and the ascent time will increase Likwise 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 this case it will be more manageable to maintain an additional distance below the ceiling to make sure that the waves do not lift you above
43. e and when you could go dying together Groups can be either open or closed closed groups mean that you have to apply for a membership and be accepted before you can participate in group activities All groups have a home page that displays information about group e vents and includes news noticeboard and other information Group members can also use group specific bulletin boards chat rooms and group calendars and add links and create group activities Sport Forums SuuntoSports com has its o wn forum for each Suunto sport The basic features and functions are the same for all sport forums sport specifi news bulletin boards and chat rooms Users can also suggest links to sports related sites and tips regarding the sport and equipment to be published on the site or publish their own travel reports Sport forums include presentations of the resorts that are related to the sport Users can rank the resorts with comments and the results are published ne xt to the resort information A ranking list can also be created for other things for example where are the best diving sites what group has most members who has uploaded most logs and so on 8 3 GETTING STARTED To join the SuuntoSports com community connect to the Internet open your web browser and go to wwwsuuntosports com When the opening page appears click the Register icon and register yourself and your Suunto sports instrument You can change and update your personal
44. e dive 4 1 MEMORY FUNCTIONS 1 MEMORY The memory options Fig 4 4 for this dve compu ter include the combined Logbook and Dive Profile Memory Fig 4 5 4 11 Di ve History Memory Fig 4 12 4 13 The dive entry time and date is gistered in the Logbook memory Always check before diving that the time and date are correctly set especially after traveling between different time zones 4 1 1 Logbook and Dive Profile Memory 1 LOGBOOK This instrument has a v ery sophisticated high ca pacity Logbook and Profi le Memory with a data recording interval of 30 seconds Dives shorter than the recording interval are not registered To enter the Logbook Memory Mode select MODE MEMORY LOGBOOK Fig 4 7 Logbook page II Main dive related data For each dive there are four pages of logbook di ve information Use the scroll buttons to scroll the dis play between Logbook pages I II and IV The data of the most recent dive is shown first The logbook dives can be scrolled through displaying only the first page of each dive or scrolling through the 4 different pages of a dive When at the first page of a dye use the MODE button to change the scroll sequence When the arrow icon is next to the Mode button the scroll button will scroll through the first page only of each dive When Select is displayed ne xt to the mode b utton the scroll buttons will scroll through the four pages Fig 4 8 Logboo
45. e nitrox dives it is recommended that you set the dive computer permanently to its NITR OX Mode The Nitrox mode can be enabled by accessing MODE SET MODEL see chapter 4 2 Set Modes If set to Nitrox mode the correct oxygen percentage of the gas in your c ylinder must always be entered into the computer to ensure correct nitrogen and oxygen calculations The dive computer adjusts its mathematical nitrogen and oxygen calculation models according to the entered 02 and PO2 values Calculations based on Nitrox use result in longer no decompression times and shallo wer maximum depths than diving with air When the dive computer is set in Nitrox mode the Dive Planning modes calculates with the 02 and PO2 ulues that are currently in the computer WARNING DO NOT DIVE WITH A CYLINDER OF ENRICHED AIR IF YOU HAVE NOT PERSONALLY VERIFIED ITS CONTENTS AND ENTERED THE ANALYSIS VALUE INTO YOUR DIVE COMPUTER Failure to verify cylinder contents and enter the appropriate Q into your dive computer will result in incorrect dive planning information WARNING The dive computer will not accept fractional percentage alues of oxygen concentration Do not round up fractional percentages For example 31 8 oxygen should be entered as 31 Rounding up will cause nitrogen percent ages to be understated and will af fect decompression calculations If there is a desire to adjust the computer to pro vide more conservative calculations use the person
46. ecompres sion limits in 3 m 10 ft increments ending at 45 m 150 ft By pressing the up arrow PLAN button the next shallower depth will be shown again The Planning Mode is canceled by pressing the SMART QUIT button NOTE The Planning mode is disabled in Error mode see section 3 8 Error Conditions Higher Altitude and conservative Personal Adjustment Modes will shorten the no decompression time limits These limits at dif ferent Altitude and Personal Adjustment Mode selections are shown in Table 6 1 and 6 2 in section 6 1 Op erating Principles The Planning mode also accounts for the following information from previous dives e any calculated residual nitrogen e all dive history for the past four days oxygen toxicity Nitrox mode The no decompression times given for different depths will therefore be shorter than before your first fresh dive DIVE NUMBERING SHOWN DURING DIVE PLANNING Dives belong to the same repetitive dive series if the instrument vas still counting down the no fly time at the beginning of the dive The surface interval must be at least 5 minutes for a die to be considered a repeti tive dive Otherwise it is considered a continuation of the same di ve The dive number will not change and the dive time will continue where it left off see also section 3 5 2 Dive Numbering 18 3 1 4 User Definable Functions and Alarms The GEKKO has several user definable functi
47. ed as a default the CNS limits up to 1 4 bar are based on 1991 NOAA Diving Manual limits but the limits above 1 4bar are significantly shortened the monitoring is based on the long term daily tolerance level and the recovery rate is reduced Oxygen related information displayed by the di ve computer is also designed to ensure all warnings and displays in the appropriate phases of a dive E g the fol lowing information will be shown before and during a dive when the computer is set in Nitrox mode the selected O color coded OLF bar graph for either CNS or OTU audible alarms are given and the OLF bar graph starts to blink when the 80 and 100 limits are exceeded blinking of the bar graph stops when the PO is below 0 5 bar 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 and maximum PO selected 6 4 TECHNICAL SPECIFICATION Dimensions and weight Diameter 61mm 2 4in Thickness 28mm 1 110 Weight 68g 2 4 oz Depth Gauge Temperature compensated pressure sensor Salt water calibrated in fresh water the readings are about 3 smaller cali brated complying with EN 13319 55 Maximum depth of operation 80 m 262 ft complying with EN 13319 Accuracy 1 of full scale or better from 0 to 80 m 262 ft at 20 C 68 F complying with EN 13319 Depth displ
48. ended that you use this option to make the calculations more conser vative Failure to select the correct Personal Adjustment setting will result in erroneous dive and planning data NOTE You can change from Air mode to Nitrox mode at an y time It is ho wever not possible to revert back to Air mode from Nitrox mode before the instrument has counted down the no flying time When planning both air and nitrox dives during the same dive series you should set the instrument in Nitrox mode and modify the gas mix accordingly TABLE OF CONTENTS WARNINGS 5 AA iaia 3 1 INTRODUCTION 9 11 SAFETY PRECAUTIONS vici 9 1 11 5 10 1 1 2 Dive Computer 8 22 2 4444 10 LS UNIX creare na Geeta andina 10 2 GETTING 00 4040 00 12 2 6 eresse deveres 12 22 PUSH BUITONS c lin 12 2 3 WATER CONTAC TS iii 14 3 DIVING WITH THE 4 15 3 1 BEFORE DIVING 15 3 1 1 Activation and ns 15 3 12 Battery 17 3 1 2 1 Battery Power Indicator 2 2 17 3 13 Dive Planning PLAN icaro 18 3 1 4 User Definable Functions and Alarms 19 STOP
49. g bars Make sure that the spring bars get fully seated so they will not come off their holes Console model 50 Refit the dive computer in the console according the instructions of the console CAUTION Check after the first dives for possible moisture under the transparent battery compartment lid indicating a leak Complete Strap V5841 Securing Ring V5844 Short Strap with buckle V5836 Battery Compartment Lid with buzzer V5843 Spring Bar K5588 O Ring K5664 Long Strap Battery Retainer K5592 V5842 Battery K5597 Fig 5 1 Instrument parts The code after the name stands for spare part order number Fig 5 2 Opening of the securing ring 51 6 TECHNICAL DESCRIPTION 6 1 OPERATING PRINCIPLES NO DECOMPRESSION LIMITS The no decompression limits displayed by the dive computer for the first dive to a single depth see Table 6 1 and Table 6 2 are slightly more conservative than those permitted by the U S Navy tables TABLE 6 1 NO DECOMPRESSION TIME LIMITS MIN FOR VARIOUS DEPTHS M FOR THE FIRST DIVE OF A SERIES Personal Mode Altitude Mode 1 2 P1 A0 P1 A1 P1 A2 2 2 1 P2 A2 A 9 163 130 163 130 96 130 96 75 12 124 89 67 89 67 54 67 54 45 15 72 57 43 57 43 35 43 35 29 18 52 39 30 39 30 25 30 25 21 21 37 29 23 29 23 20 23 20 15 24 29 24 19 24 19 16 19 16 12 27 23 18 15 18 15 12 15 12 9 30 18 14 12 14 12 9 12 9 7 33 13 11
50. h the ceiling zone the display will show you tw o arrows pointing at each other the hour glass icon Fig 3 17 Do not ascend abo ve this zone During the decompression stop ASC TIME will count down towards zero When the ceiling mo ves upwards you can ascend to the w ceiling You may surface only after the ASC TIME and CEIL ING labels have disappeared which means that the decompression stop and any Mandatory Safety Stop has been completed You are advised ho wever to stay until the STOP sign has also gone This indicates that the three minute Recommended Safety Stop has also been completed DISPLAY ABOVE THE CEILING If you ascend above the ceiling during a decompres sion stop a downward pointing arrow will appear and a continuous beeping starts Fig 3 18 In addition an error warning Er reminds you that you have only three minutes to correct the situation You must im mediately descend to or below the ceiling If you continue to violate the decompression the dive computer goes 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 see also section 3 8 Error Conditions 3 4 DIVING IN NITROX MODE 3 4 1 Before Diving The GEKKO can be set for diving with standard air only Air mode or it can be set for diving with Enriched Air Nitrox Nitrox mode If you are educated for nitrox diving and you plan to mak
51. information will be displayed your present depth in meters ft the maximum depth during this dive in meters ft indicated as MAX the available no decompression time in minutes in the center window as NO DEC TIME and as a bar graph on the left side of the display It is calculated based on the five factors described in section 6 1 Operating Principles water in temperature in C F in the lower left corner the elapsed dive time in minutes shown as DIVE TIME in the lower right corner the Altitude Adjustment setting on the left side of the center window with a wave and moun tain symbols A0 Al or A2 see Table 3 4 the Personal Adjustment setting on the left side of the center window with a diver symbol and signs or P2 see Table 3 5 Diver Attention Symbol if there is micro bubble buildup and surface interval should be prolonged see Table 3 3 Alternative displays by pressing the TIME button Fig 3 7 the current time shown as TIME NOTE In Dive Mode the alternative display switch es back to the main display after 5 seconds 3 3 2 BOOKMARK It is possible to make special marks in the profile memory during a dive These Bookmarks will be shown as a blinking dive log symbol when scrolling the profile memory on the computer displayTo make a bookmark on the profle memory during a dye press the PLAN button Fig 3 8 nt No a Fme H
52. ium 34 of dissolved nitrogen in the body It is recommended that you acclimate to the new altitude by waiting at least three hours before making a dive 3 7 2 Personal Adjustment There are adverse personal factors for DCI which divers can predict in advance and input into the decompression model Factors that may affect susceptibility to decompression illness vary between divers and also for the same diver from one day to another The three step Personal Adjustment Mode is available if a more conservative dive plan is desired The personal factors which tend to increase the possibility of DCI include b ut are not limited to cold exposure water temperature less than 20 jC 68 jF the diver is below average physical fitness level diver fatigue diver dehydration previous history of DCI stress obesity The Personal Adjustment Mode is indicated by a diver symbol and plus signs PO a diver P1 diver or P2 diver Section 4 2 4 PersonalAdjustments describes how the Personal Mode is adjusted This feature should be used to adjust the computer to be more conservative according to personal preference by entering the suitable Personal Adjustment Mode with the help ofTable 3 5 In ideal conditions retain the dedult setting If conditions are more difficult or other mentioned factors which tend to increase the possibility of DCI e xist select P1 or e ven the most conserv ative P2 Asa
53. ive computer will display a battery symbol as a warning when the power gets too low When this happens the instrument should not be used until the battery has been replaced see also section 3 1 1 Activation and Prechecks 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 Shorten the strap by cutting it if you do not expect to need the extra length of it 5 3 MAINTENANCE The instrument should be soaked thoroughly rinsed with fresh water then dried with a soft tovel after each dive Make sure that all salt crystals and sand particles have been flushed out Check the display and the transparent battery compartment ver for possible moisture or water DO NOT use the dive computer if you detect any moisture or water inside In order to limit corrosion damage remove the battery and moisture from the battery compartment Contact an authorized Suunto dealer for battery replacement or other needed service CAUTION Do not use compressed air to blow water off the unit Do not use solvents or other cleaning fluids that might cause damage Do not test or use the dive computer in pressurized air 5 4 WATER RESISTANCE INSPECTION Water resistance of the unit must be checkd after replacement of the battery or after other service operations The check requires special equipment and training You must frequently check the transparent ba
54. k page III of the selected dive Surface interval time and a average depth The END text is displayed between the oldest and most recent dive Fig 4 11 Note that chronological sequence in the logbook is determined by the date not by the dive number The following information will be sho wn on four pages Page I main display Fig 4 e dive number in the dive series dive entry time and date Fig 4 9 Logbook page IV Profile of specific dive 39 Page II Fig 4 7 e dive number in the dive series e maximum depth NOTE Due to lower resolution the reading may differ from the maximum depth reading of the Dive History up to 0 3 m 1 ft total dive time e temperature at the maximum depth Altitude Adjustment setting e Personal Adjustment setting SLOW label if the diver has violated the maximum ascent rate STOP label if the Mandatory Safety Stop was violated ASC TIME label if the dive was a decompression stop dive Diver attention symbol if the symbol was displayed when dive was started v downward pointing arrow if the ceiling was violated oxygen percentage e maximum OLF during the dive only in Nitrox mode Page III Fig 4 8 e number in the dive series e average depth e surface interval time before the dive Page IV Fig 4 9 dive number in the dive series e the profile of the dive automatic scrolling during which logbook symbol blinks at the point
55. l diving activity WARNING ONLY DIVERS TRAINED IN THE PROPER USE OF SCUB A DIVING EQUIPMENT SHOULD USE A DIVE COMPUTER No dive computer can replace the need for proper dve training Insufficient or improper training may cause diver to commit errors that may lead to serious injury or death WARNING THERE ISALWAYS A RISK OF DECOMPRESSION ILLNESS DCI FOR ANY DIVE PROFILE EVEN IF YOU FOLLOW THE DIVE PLAN PRE SCRIBED BY DIVETABLES ORA DIVE COMPUTER NO PROCEDURE DIVE COMPUTER OR DIVE TABLE WILL PREVENT THE POSSIBILITY OF DCI OR OXYGEN TOXICITY An individual s physiological make up can vary from day to day The dive computer cannot account for these variations You are strongly advised to remain well within the exposure limits provided by the instrument to minimize the risk of DCIAs an added measure of safety you should consult a physician regarding your fitness before diving WARNING SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS LIMIT THEIR MAXIMUM DEPTH TO 40 M 130 FT ORTO THE DEPTH CAL CULATED THE COMPUTER BASED ON THE SELECTED O AND A MAXIMUM PO OF 1 4 BAR WARNING DIVES WITH REQUIRED DECOMPRESSION STOPS ARE NOT RECOM MENDED YOU SHOULD ASCEND AND BEGIN DECOMPRESSION IMMEDIATELY WHEN THE DIVE COMPUTER SHO WS YOU THAT A DECOMPRESSION STOP IS REQ UIRED Note the blinking ASC TIME symbol and the upward pointing arrow WARNING USE BACK UP INSTRUMENTS Make sure that you use back up instru mentation including
56. low Battery replacement is recommended if you are going to colder conditions or if you are planning to make a dive trip LOWBAT Battery power is low and the battery 2 segments replacement is recommended low battery symbol The battery symbol is displayed LOWBAT Change the battery d 1 segment QUIT Returns to the Time display low battery symbol Activation and all functions are disabled Temperature an internal oxidation of the battery df cts the battery voltage If the instrument is stored for a long period the low battery warning may be displayed even though the battery has enough capacity The low battery warning may also be displayed at low temperatures even though the battery has enough capacity in warmer conditions In these cases repeat the battery check procedure After battery check the Low Battery Warning is indicated by the battery symbol Fig 3 4 If the battery symbol is displayed in the Surface mode or if the display is faded or weak the battery may be too lo w to operate the di ve computer and battery replacement is recommended 17 3 1 3 Dive Planning PLAN To enter Planning Mode press the PLAN at any time during Surfice Mode After showing the text PLAN Fig 3 5 the display will show the no decompres sion limit for the depth of 9 m 30 ft By pressing the do wn arrow W TIME button the dive computer will calculate and show the next deeper no d
57. manually The default setting for maximum oxygen partial pres sure is 1 4 bar however you are able to set it between the range of 1 2 1 6 bar 3 4 2 Oxygen Displays If set to Nitrox mode the NITROX display with all labeled oxygen information and the label NITROX is shown after activation and before the Dve Planning Mode The Nitrox display shows Fig 3 20 e oxygen percentage labeled with O is shown in the left side of the center window e the set oxygen partial pressure limit labeled with PO is shown in the upper right display e the maximum allowed depth based on the set oxygen percentage and partial pressure limit the current oxygen toxicity exposure shown with an Oxygen Limit Fraction OLF bar graph along the left side of the display instead of the CBT In Dive mode the oxygen percentage labeled with and the current oxygen toxicity shown with an Oxygen Limit Fraction OLF bar graph are shown Fig 3 21 and Fig 3 22 During a dive the oxygen partial pressure labeled with PO 15 also shown instead of the maximum depth in the upper right display if the partial pressure is greater than 1 4 bar or the set value Fig 3 23 By pressing the TIME button during a nitrox dive the alternative display appears which includes Fig 3 24 current time e Consumed Bottom Time maximum depth during decompression stop dive After five seconds the display will automatic
58. nal oxidation of the battery may cause the battery warning even though the battery has enough capacity In this case the warning usually disappears when the Dive Mode is activated again 58 7 WARRANTY NOTE The warranty arrangements are different in different countries The dive computer packaging contains information re garding the w arranty benefits and requirements applicable to your purchase This Suunto di ve computer is w arranted against defects in w orkmanship and materials for a period of two years after purchase to the original ovner subject to and in accordance with the terms and conditions set forth below The dive computer should be serviced or repaired only by an authorized Suunto dealer or distributor This warranty does not co ver damage to the product resulting from improper usage improper maintenance neglect of care alteration or unauthorized repair This warranty will automatically become void if proper preventive maintenance procedures have not been follo wed as outlined in the use and care instructions for this product Ifa claim underthis or any other warranty appears to be necessary return the product freight prepaid to your Suunto dealer or distributor or qualified repair facility Include your name and address proof of purchase and or serviceregistration card as required in your country The claim will be honored and the product repar or replaced at no charge and returned in what your Suunto dealer or dis
59. nings will appear Fig 3 12 the Mandatory Safety Stop ceiling is exceeded A downward pointing arrow will appear Fig 3 14 the decompression ceiling depth is exceeded An error warning Er and a downward pointing arrow appear You should immediately descend to or below the ceiling The instrument will otherwise enter a permanent Error Mode within three minutes indicated by a permanent Er Fig 3 18 You are able to preset alarms before the actual dive The user programmable alarms can be set for maximum depth and dive time The alarms activate when The preset maximum depth is reached continuous beep series for 24 seconds or until any button is pressed the maximum depth blinks as long as the present depth value exceeds the adjusted value preset dive time is reached continuous beep series for 24 seconds or until any button is pressed the dive time blinks for one minute if no button is pressed OXYGEN ALARMS IN NITROX MODE Three double beeps for 5 seconds occur when OLF bar graph reaches 80 The segments exceeding the 80 limit start to blink Fig 3 23 33 the OLF bar graph reaches 100 The blinking of the segments exceeding 80 will stop when the OLF is not loading anymore At that point the PO is less than 0 5 bar Continuous beeps for 3 minutes occur when set oxygen partial pressure limit is exceeded The maximum depth is replaced with a current blinking
60. nter window instead of the no decompression time Fig 3 9 The Recommended Safety Stop as the name implies is recommended If it is ignored there is no penalty applied to the following surface intervals and dives 3 2 2 Mandatory Safety Stop When the ascent rate ceeds 12 meters min 40 ft momentarily 10 meters min 33ft continuously the micro bubble build up is predicted to be more than allwed for in the decompression model The Suunto RGBM calculation model responds to this by adding a Mandatory Safety Stop to the dive The time of this Mandatory Safety Stop will depend on the severity of the ascent rate excess 19 NO DEC TIME LI Lt k DIVE TIME Fig 3 6 Dive starts 3 sa 8 o DIVE ih Fig 3 7 Diving display Present depth is 19 3 m 63 ft and no decompression stop time limit is 23 minutes in AO P1 mode Maximum depth during this dive was 19 8 m 65 ft water temperature is 18j 64 elapsed dive time is 16 minutes Alternative display of current time 10 20 10 20 am is shown for 5 seconds after pressing TIME button 20 The STOP sign will appear in the display and when you reach the depth zone between 6 m to 3 m 20 ft to 10 also the CEILING label ceiling depth and the calculated Safety Stop time appear in the display You should wait until the Mandatory Safety Stop warning disappears Fig 3 13 The M
61. o enter the PC Settings mode select MODE 1 MEMORY 3 PC SET Fig 4 14 NOTE While in the PC SET mode the connector water contacts are used only for the data transfer The Dive Mode IS NO T automatically acti vated if the contacts are submerged Press the SMART Quit to exit PC SET mode Ifa button is not pressed or no data is transferred within 5 minutes the instrument beeps and returns to the timekeeping display automatically 4 2 SET MODES 2 SET The Set Mode Fig 4 15 is di vided into four sub modes dive computer model setting alarm settings time setting and personal adjustments 4 2 1 Dive Computer Model Settings 1 SET MODEL In the Model Setting mode the Gekk o can be set to function in Air or Nitrox model To enter the model settings select MODE SET MODEL Fig 4 16 Select AIR if di ving with standard air and select NITROX if diving with oxygen enriched air 4 2 1 1 Nitrox Oxygen Settings The correct oxygen percentage of the gas in your cylinder must always be entered into the computer to ensure correct nitrogen and oxygen calculations Also the oxygen partial pressure limit must be set In the Nitrox Setting mode the equi valent allowed maximum depth based on the chosen alues will also be displayed To enter the Nitrox Oxygen Setting Mode select MODE SET MODEL NITROX The default oxy gen percentage setting is 21 air and oxygen partial pressure PO setting 1 4 bar Fig 4 17
62. ol lows TABLE 3 2 ASCENT RATE INDICATOR Ascent Rate Indicator The equivalent ascent speed Example in Fig No segments Below 4 m min 13 ft min 3 7 One segment 4 6 m min 13 20 ft min 3 8 Two segments 6 8 m min 20 26 ft min 3 9 Three segments 8 10 m min 26 33 ft min 3 10 Four segments 10 12 m min 33 39 ft min 3 11 Four segments Above 12 m min 39 ft min or 3 12 the SLOW segment continuously above 10 m min blinking depth 33 ft min reading the STOP sign and an audible alarm 22 When the maximum allowed ascent rate is ceeded the fifth SLOW warning segment and the STOP sign appear and the depth reading starts to blink indicating that the maximum ascent rate has been exceeded continuously or that the current ascent rate is significantly above the allowed rate Whenever the SLOW warning segment and the STOP sign appear Fig 3 12 you should immediately slow down your ascent When you reach the depth zone between 6 m to 3 m 20 ft to 10 ft the ST OP and CEILING depth labels will advise you to make a Mandatory Safety Stop Wait until the w arning disappears Fig 3 13 You should not ascend shal lower than 3 m 10 ft with the Mandatory Safety Stop warning on WARNING DO NOT EXCEED THE MAXIMUM ASCENT RATE Rapid ascents increase the risk of injury You should al ways make the Mandatory and Recommended Safety Stops after you ha ve ex ceeded the maximum
63. olon telling the duration of the present surface interval Fig 3 27 the desaturation no flying time in hours and minutes is shown next to the airplane in the center window of the display Fig 3 28 30 If set to Nitrox mode the folloving information will also be shown the oxygen percentage labeled with 02 is shown on the left side of the center window the current oxygen toxicity exposure shown with an Oxygen Limit Fraction OLF bar graph along the left side of the display 3 5 2 Dive Numbering Several repetitive dives are considered to belong to the same repetitive dive series when the dye compu ter has not counted the no fying time to zero Within each series the dives are given individual numbers The first dive of the series will be numbered as DIVE 1 the second as DIVE 2 the third as DIVE 3 etc TABLE 3 3 WARNING SYMBOLS Symbol er on display Indication A Diver Attention Symbol Extend Surface Interval E r Violated Decompression Ceiling Do Not Fly Symbol If you start a ne w dive with less than 5 minutes of surface interval time the dve computer interprets this as a continuation of the previous dive and the dives are considered to be the same The diving display will return the dive number will remain unchanged and the dive time will be gin where it left of f After 5 minutes on the surf ace subsequent dives are by definition repetitive The dive counter displayed in
64. ons and depth and time related alarms that you can set according to your personal preference The dive computer model Air Nitrox can be set in the MODE SET MODEL submode The dive alarms can be set under MODE SET SET ALARMS the time and date settings in MODE SET SET TIME and the units metric impe rial as well as personal adjustments in the MODE SET SET ADJUSTMETS submode Setting of the user defnable functions and alarms are amp plained in detail in section 4 2 Set Modes 3 2 SAFETY STOPS Safety stops are widely considered good diving practice and are an integral part of most dive tables Reasons to perform a safety stop include a reduction in sub clinical DCI microbubble reduction ascent control and orientation before surfacing The GEKKO displays two different types of safety stops Recommended Safety Stop and Mandatory Safety Stop The Safety Stops are indicated by STOP label when in the depth range 3 m 6 m 10 ft 20 ft Recommended Safety Stop Countdown STOP CEILING label when in the depth range 3 m 6 m 10 ft 20 ft Mandatory Safety Stop Time display STOP label when deeper than 6 m Mandatory Safety Stop scheduled 3 2 1 Recommended Safety Stop With every dive over 10 meters the instrument has a three minute countdown for the recommended safety stop to be taken in the 3 6 meter 10 ft 20 ft range This is shown with the ST OP sign and a three minute countdo wn in the ce
65. oth on the ring Fig 5 2 and turn the ring clockwise Care should be taken not to damage any of the parts 4 Remove the ring 5 Carefully remove the lid with the beeper attached to it The lid can be removed by pressing with your finger on the outermost edge of the lid while at the same time pulling with your nail at the opposite side Do not use sharp metal objects as they might damage the O ring or the sealing surfaces 6 Remove the O ring and the battery retainer 7 Carefully remove the battery Do not damage the electrical contacts or the sealing surface Check for any traces of flooding particularly between the beeper and the lid or for any other damage In case of a leak or any other damage bring the dive computer to an authorized SUUNTO dealer or distributor for check and repair 8 Check the condition of the O ring a defective O ring may indicate sealing or other problems Dispose the old O ring even if it seems to be in good condition 9 Check that the battery compartment battery holder and lid are clean Clean with soft cloth if necessary 10 Gently insert the new battery in the battery compartment Check the polarity of the battery the mark should point toward the bottom of the compartment and the mark upwards 11 Reinstall the battery retainer in its correct position 49 12 Check that the new lubricated O ring is in good condition Put it in the right position on the battery compartment
66. p limits are considerably reduced SURFACE INTERVALS The dive computer requires a minimum surf ace interval of 5 minutes between dives If a surface interval is shorter than 5 minutes the next dive is treated as a continuation of the previous dive 53 6 2 SUUNTO REDUCED GRADIENT BUBBLE MODEL RGBM The Suunto Reduced Gradient Bubble Model RGBM is a modern algorithm for predicting both dissolved and free gas in the tissues and blood of di vers It was developed in a co operation between Suunto and Bruce R Wienke BSc MSc PhD It is based on both laboratory experiments and diving data including data from DAN It is a significant advance on the classical Haldane models which do not predict free gas microbubbles The advantage of Suunto RGBM is additional safety through its ability to adapt to a wide variety of situations Suunto RGBM addresses a number of diving circumstances outside the range of just dissolved gas models by Monitoring continuous multiday diving Computing closely spaced repetitive diving Reacting to a dive deeper than the previous dive Adapting for rapid ascents which produce high micro bubble silent bub ble build up Incorporating consistency with real physical laws for gas kinetics Suunto RGBM Adaptive decompression The SUUNTO RGBM algorithm adapts its predictions of both the ef fects of micro bubble build up and adverse dive profiles in the current dive series It will also change these c
67. pression takes place After a change in ambient pressure the amount of time required for the partial pressure of nitrogen in a theoretical compartment to go half way from its pre vious value to saturation at the new ambient pressure 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 frac tion 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 decom pression stops during the subsequent ascent Any dive which permits a direct uninterrupted ascent to the surface at any time Abbreviation for no decompression time limit Abbreviation for Oxygen Enriched Air Nitrox Abbreviation for Oxygen Limit Fraction Abbreviation for Oxygen Tolerance Unit Is used to measure the Whole Body Toxicity 63 Oxygen Limit Fraction A term used by SUUNTO for the values displayed in 0 2 the Oxygen Toxicity bargraph The value is either the CNS or the OTU Oxygen percentage or oxygen fraction in the breath ing gas Standard air has 21 oxygen Oxygen partial pressure Limits the maximum depth to which the used Nitrox PO RGBM Reduced Gradient Bubble Model Repetitive dive Residual nitrogen SURF TIME Surface interval tim
68. recommended ascent rate If this Mandatory Safety Stop is not completed the decompression model will penalize your dive s 3 3 5 Decompression dives When your NO DEC TIME becomes zero your dive becomes a decompression stop di ve i e you must perform one or se veral decompression stops on your w ay to the surf ace The NO DEC TIME on your display will be replaced by an ASC TIME notation and the maximum depth will be replaced by a CEILING notation and an upward pointing arrow Fig 3 15 If you e xceed the no decompression limits on a dive the dive computer will provide decompression information required for ascent A fter this the instru ment will continue toprovide subsequent interval and repetitive dive information Fig 3 11 Ascent Rate Indica tor Maximum allowed ascent rate Four segments Fig 3 12 Ascent Rate Indica tor Blinking depth reading SLOW and four segments are shown together with an audible alarm ascent rate is more than 10 m min 33 ft min This is a caution to slow down STOP sign means that you are advised to make a Mandatory Safety Stop when you reach a depth of 6 m 20 fi GEKKO SUUNTO N m 2 Fig 3 13 A Mandatory Safety Stop You are advised to make a Mandatory Safety Stop in the depth zone between 6 m and 3 m 20 ft and 10 ft Pressing TIME button shows alternative display 23 Fig 3 14 Violated Manda tory Safety Stop Downward pointing arrow and
69. sue group Divers Alert Network Abbreviation for decompression illness Time spent at a decompression stop or range before surfacing to allow absorbed nitrogen to escape natu rally from tissues On a decompression stop dive the depth range between the floor and 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 inadequately controlled decompression Commonly called bends or DCI Dive series Dive time EAD EAN Enriched Air Nitrox Equivalent Air Depth Floor Half time Multi level dive NITROX NOAA No decompression time No decompression dive NO DEC TIME OEA EAN OLF OTU Oxygen Tolerance Unit A group of repetitive dives between which the dive computer indicates some nitrogen loading is present When nitrogen loading reaches zero the dive com puter deactivates Elapsed time between leaving the surface to descend and returning to the surface at the end of a dive Abbreviation for equivalent air depth Abbreviation for enriched air nitrox Also called Nitrox or Enriched Air EANx Air that has some oxygen added Standard mixes are EAN32 NOAA Nitrox I NN I and EAN36 NOAA Nitrox NN II Nitrogen partial pressure equivalent table The deepest depth during a decompression stop dive at which decom
70. tch that of the user If it is left on the surface during any dive it will give inaccurate information for subsequent dives No dive computer can tale 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 WARNING THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PERCENT AGE 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 decompression 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 WARNING SET THE CORRECT ALTITUDE ADJUSTMENT MODE When diving at altitudes greater than 300 m 1000 ft the Altitude Adjustment feature must be correctly selected in order for the computer to calculate the decompres sion status The dive computer is not intended for use at altitudes greater than 3000 m 10000 ft F ailure to select the correct Altitude Adjustment setting or diving above the maximum altitude limit will result in erroneous dive and planning data WARNING SET THE CORRECT PERSONAL ADJUSTMENT MODE Whenever it is believed that factors that tend to increase the possibility of DCI e xist it is recomm
71. the ceiling Suunto recommends that decompression takes place deeper than 4 m 13 ft even if the indicated ceiling is shallower NOTE It will take more time and more air to decompress belov 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 woid doing so by accident you should stay somewhat below the ceiling DISPLAY BELOW THE FLOOR The blinking ASC TIME and an upw ard pointing arrow indicate that you are below the floor Fig 3 15 You should start your ascent immediately The ceiling depth is shown on the right top corner and the minimum total ascent time on the right side of the center window 25 26 Fig 3 17 Decompression dive at ceiling zone Two arrows point at each other hour glass You are in the optimum ceiling zone at 3 5 m 11 ft and your minimum ascent time is 5 minutes Pressing TIME button activates alternative display Fig 3 18 Decompression dive above ceiling Note downward pointing arrow Er warning and an audible alarm You should imme diately within 3 minutes descend to or below ceiling DISPLAY ABOVE THE FLOOR When you ascend abo ve the floor the ASC TIME display stops blinking and the upw ard pointing arrow disappears Fig 3 16 Decompression will now begin but is v ery slow You should therefore continue your ascent DISPLAY AT THE CEILING ZONE When you reac
72. tributor determines a reason able amount of time provided all necessary parts are in stock All repairs made not covered under the terms of this warranty will be made at the owner s expense This warranty is non transferable from the original owner All implied w arranties including b ut not limited to the implied w_arranties of merchantability and fi tness for a particular purpose are limited from date of purchase and in scope to the w arranties expressed herein Suunto shall not be liable for loss of use of the product or other incidental or consequential costs expenses or damage incurred by the purchase warranties not stated herein are expressly disclaimed Some states do not allo w the exclusion or limitation of implied arranties of consequential damages so the above exclusions or limitations may not apply to you This warranty gives you specific legal rights and you may also have other rights that vary from state to state This warranty does not cover any representation or warranty made by dealers or representatives beyond the provisions of this warranty No dealer or representa tion is authorized to mak e any modifications to this w arranty or to mak e any additional warranty Battery replacement is not covered by this warranty This Instruction Manual should be kept with your dive computer 59 8 SUUNTOSPORTS COM SuuntoSports com is an international free web community where you can refine and share the data th
73. ttery compartment co ver and the display for an y sign of leaks If you find moisture inside your di ve computer there is a leak A leak must be corrected without delay as moisture will seriously damage the unit even beyond repair SUUNTO does not take any responsibility for damage caused by moisture in the di ve computer if the instructions of this manual are not carefully followed 47 48 In case of a leak immediately take the dive computer to an authorized SUUNTO dealer or distributor 5 5 BATTERY REPLACEMENT NOTE Itis advisable to contact an authorized Suunto dealer for battery replace ment It is imperati ve that the change is made in a proper manner to a void any leakage of water into the battery compartment or computer CAUTION Defects caused by improper battery installation are not co vered by w ar ranty CAUTION When the battery is changed all nitrogen and oxygen uptak data is lost There fore the no flying time shown by the computer should ha ve reached zero or you must wait for 48 hours or preferably een 100 hours between dives before you may 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 alarmsetting is lost In the NITROX Mode the Nitrox settings are also reverted back to default settings 21 1 4 bar PO When working with the battery compartment
74. urchase Name Address City Country Telephone E mail Signature www suunto com Made in Finland Suunto Oy 06 2003 03 2009
75. when the user has pressed the PLAN button for Bookmark e 02 during the dive profile e blinking SLOW label when registered blinking ASC TIME label when the dive became a decompression dive 40 Press the SMART Select button once to change the scroll buttons to scroll the diferent dives forward and backward Fig 4 10 Press the SMART gt Select button again to change function of the scroll buttons back to scroll the diferent pages of the selected dve When searching the dives only the page 1 is shown The END text is displayed between the oldest and the most recent dive Fig 4 11 The memory will retain approximately the last 50 hours of dive time After that when ne w dives are added the oldest dives are deleted The contents of the memory will remain when the battery is changed assuming that the replacement has been done ac cording to the instructions DIVE PROFILE MEMORY PROF The scrolling of the profi le will start automatically when the Logbook page IV PROF is entered With the default setting the dive profile is recorded and displayed in 30 second increments with each dis play being shown for about three seconds The depths shown are the maximum values of each interval Pressing any button stops the scrolling of the pro file NOTE Several repetitive dives are considered to belong to the same repetiti ve dive series if the no flying time has not ended See Dive Numbering in section 3 5 2
76. will not show times for ascent or stops However all the other displays will function as before to provide information for ascent 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 After surfacing you should not dive for a minimum of 48 hours During the per manent Error Mode the Er te xt will be displayed in the center windo w and the Planning Mode will be disabled 36 4 MENU BASED MODES To make yourself familiar with the menu based functions please use your Quick Reference Guide supplied with the GEKKO together with the informa tion in this chapter The main menu based functions are grouped under 1 Memory and 2 Setting modes THE use OF the menu based functions 1 Activate the menu based modes by pressing once the SMART MODE button in the Dive Mode Fig 4 1 2 Scroll the mode options by pressing the arrow up down buttons When scrolling the options the label and an equivalent number are shown on the display Fig 4 2 4 3 3 Press the SMART Select button once to select the desired option 4 Scroll the submode options by pressing the arrow up down buttons When scrolling the options the label and an equivalent number are shown on the display 5 Select the desired option by pressing once the SMART Select button Repeat the procedure if there are more submodes 6 Depending on the mode you are now
77. your purchase of the SUUNT O GEKKO dive computer The GEKKO builds on the Suunto tradition of deli vering feature rich easy use dive computers Push button controls access a wide selection of choices and the display is optimized for the dive mode chosen This dive computer is a compact and sophisticated multipurpose di ve instrument designed to gi ve you years of trouble free service Choice of Operating Modes and Set up Options User options for the GEKKO are selected using the push buttons Pre Dive configuration and setup options include e Choice of operating mode Air Nitrox e Choice of unit Metric Imperial e Maximum depth alarm Dive time alarm e Clock calendar e Mix Oxygen fraction Nitrox mode only e Maximum PO Nitrox mode only e Altitude adjustment e Personal adjustment Continuous Decompression with Suunto RGBM The Suunto Reduced Gradient Bubble Model RGBM utilized in the GEKK O predicts both dissolved and free gas in blood and tissues of divers It is a signifi cant advance on the classic Haldane models which do not predict free gas The advantage of Suunto RGBM is additional safety through its ability to adapt to a variety of situations and dive profiles In order to optimize how to respond to diferent added risk situations an additional category of stop referred to as a Mandatoy Safety Stop has been introduced Also a countdown for the Recommended Safety Stop is included The combination of stop types

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