This instruction manual is copyrighted and all rights are reserved. 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, VYTEC, Consumed Bottom Time (CBT), Oxygen Limit Fraction...
ISO 9001 SUUNTO Oy’s Quality Assurance System is certifi ed by Det Norske Veritas to be according to the ISO 9001 in all SUUNTO Oy’s operations (Quality Certifi cate No. 96-HEL-AQ-220). SUUNTO Oy does not assume any responsibility for losses or claims by third parties, which may arise through the use of this device.
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DCI. As an added measure of safety, you should consult a physician regarding your fi tness before diving. SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS LIMIT THEIR MAXIMUM DEPTH TO 40 M [130 FT] OR TO THE DEPTH CALCULATED BY THE COMPUTER BASED ON THE SELECTED...
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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 auto matically 5 minutes after the dive has ended. The stand-by display shuts off after two hours.
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THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PER- CENTAGE 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 calcu- lations.
The advantage of Suunto RGBM is additional safety through its ability to adapt to a variety of situations and dive profi les. The Suunto Vytec allows the user to choose between a traditional Rec- ommended Safety Stop and Deep Stops. Deep Stops are decompres- sion stops that occur deeper than traditional stops, with the purpose of minimizing microbubble formation.
If you have any questions about the manual or the dive computer, contact your SUUNTO dealer before diving with the dive computer. Always remember that YOU ARE RESPONSIBLE FOR YOUR OWN...
2. GETTING ACQUAINTED 2.1. FUNCTIONS The Suunto VYTEC can be set to function as a regular air dive com puter, a nitrox dive computer or as a depth gauge with timer mode. The VYTEC multipurpose dive computer is an air integrated computer...
The timekeeping display is the default display of the instrument (Fig. 2.1.). If a button is not pressed within 5 minutes, the dive com puter beeps and returns to the timekeeping display automatically (except in Diving and Simula- tion modes). The timekeeping display shuts off after two hours, but pressing the PLAN or TIME button activates it.
Press the SMART (MODE) button • To activate the dive computer. • To change from the Surface Mode to the menu based modes. • To select, confi rm or quit a submode (short press). • To immediately exit any submode to the Surface Mode (long press).
4.3.3.3 Cylinder pressure settings. 2.4.1. Installing the Transmitter Upon purchasing the Vytec, Suunto strongly recommends you have your dealer attach the transmitter to the fi rst stage of your regulator. If you decide to attach it yourself, follow the...
2.4.2. Pairing and Code Selection In order to receive wireless data the transmitter and the Vytec wrist unit need to be paired. During the pairing procedure the transmitter and wrist unit select a common transmission code. The transmitter turns on when the pressure exceeds 15bar [218 psi] and it then starts sending pressure data together with a code number.
The selected transmission code can later be verifi ed via the alternative display, by pressing the “TIME” button twice. If needed, the stored code can be manually erased in this display by pressing the “PLAN” (up) button and then pressing “MODE” (select). The Vytec will now erase the stored code and start displaying “SETC”...
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In case the transmitter battery is running low, a low battery warning “LOBT” will be transmitted and displayed intermittently with the pressure reading on the Vytec (Fig.2.6 d). If the dive is started without that the Vytec and the transmitter have been properly paired, the Vytec will indicate that no cylinder data is available by displaying “OFF”...
3. DIVING WITH THE VYTEC This section contains instructions on how to operate the dive computer and interpret its displays. You will fi nd that this dive computer is easy to use and read. Each display shows only the data relevant to that specifi c diving situation.
Fig 3.3. Startup III. Sur- face mode. Depth and dive time are zero and cylinder pressure is 300 bar [4350 psi]. Pressing TIME button activates alternative display of temperature and current time. Fig. 3.4. Startup IV. Gauge mode. Fig. 3.5. Low Battery Warning.
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The Battery Power Indicator can always be seen when the Dive Mode is activated. The electroluminescent backlight will be on during the battery check. The following Table and Figure show the various warning levels. TABLE 3.1. BATTERY POWER INDICATOR Display BAT + 4 segments + OK BAT + 3 segments LOWBAT +...
If the battery symbol is displayed in the Surface mode or if the display is faded or weak, the battery may be too low to operate the dive computer and battery replacement is recommended. NOTE! For safety reasons the backlight cannot be activated when the low battery warning is indicated by the battery symbol.
The surface interval must be at least 5 minutes for a dive to be considered a repetitive dive. Otherwise, it is considered a continuation of the same dive. The dive number will not change and the dive time will continue, where it left off (see also section 3.6.2.
[40 ft] momentarily or 10 meters/min [33ft] con- tinuously the micro-bubble build-up is predicted to be more than allowed for in the decompres- sion model. The Suunto RGBM calculation model responds to this by adding a Mandatory Safety Stop to the dive. The time of this Manda- tory Safety Stop will depend on the severity of the ascent rate excess.
3.2.3. Deep Stops The Suunto Vytec allows the user to choose a deep stop algorithm instead or the traditional recommended safety stop. Deep Stops are decompression stops that occur deeper than traditional stops, with the purpose of minimizing microbubble formation and excitation.
The Bookmarks will also be shown as annotations in the PC-software, Suunto Dive Manager. To make a bookmark on the profi le memory during a dive press the PLAN button (Fig. 3.10.).
fi rst (lowest) bar graph segment appears. As your body absorbs more nitrogen, more segments start to appear. White Zone - As a safety precaution Suunto recommends you should maintain the no-decompression bar graph within the white zone. Seg- ments start to appear when the available no-decompression time de- creases below 100, 80, 60, 50, 40, 30 and 20 minutes.
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 3.3.6. “Decompression dives”). 3.3.5. Ascent Rate Indicator The ascent rate is shown graphically along the right side of the display as follows: TABLE 3.2.
3.3.6. Safety Stops and Deep Stops If Deep Stops are not used a 3 minute Recom- mended Safety Stop is prompted after every dive to 10m depth (fi g. 3.11). Continuous ascent rate violations will result in Mandatory Safety Stops (fi g. 3.14). When enabled, Deep stops are calculated.
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plus • the time needed to reach the surface after the ceiling and safety stops have been completed. YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DISPLAYED BY THE INSTRUMENT! The ascent time will increase if you: • remain at depth •...
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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 below the ceil- ing than at the ceiling.
Fig. 3.16. Decompression dive, below fl oor. 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 3 m [10 ft]. Fig. 3.17. Decompression dive, above fl...
on Nitrox use result in longer no-decompression times and shallower maximum depths than div- ing with air. As a safety precaution the oxygen calculations in the computer are made with an oxygen per- centage of 1% + setO When the dive computer is set in Nitrox mode the Dive Planning and Dive Simulation modes both calculate with the O that are currently in the computer.
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Fig. 3.22. Diving in Nitrox mode. The O2% is set to 32%. Fig. 3.23. Diving in Nitrox mode. After air time is less than 30 minutes O2% is substituted by Air Time display. Fig. 3.24. Oxygen partial pressure and OLF displays. There is an audible alarm as oxygen partial pressure is greater than 1.4 bar or...
After fi ve seconds the display will automatically revert to the original display. 3.4.3. Oxygen Limit Fraction (OLF) In addition to tracking the diver’s exposure to nitrogen, the instrument tracks the exposure to oxygen, if set to Nitrox mode. These calculations are treated as entirely separate functions.
set maximum oxygen partial pressure. Tissue calculation during dive is based on the mix you have selected. The Vytec allows gas change to enabled gas mixes during the dive. Gas change is made by the following procedure: • Press the MODE button until the Vytec starts to show blinking “MIX”...
Tank pressure and ascent rate indicator are also displayed during the dive (Fig. 3.28.). Remaining Air Time, temperature and current time are shown in the alternative display when the TIME button is pressed. NOTE! If you dive with the Gauge mode, it is not possible to change between the modes within 48 hours.
Fig 3.30. Surface interval, Sur- face time display. Pressing TIME button once will show surface time display. Fig. 3.31. Surface interval, no-fl ying time. Pressing TIME button twice will show no-fl ying time, indicated by an airplane symbol. Fig. 3.32. Surface Mode after a violated decom-pres- sion dive.
in the Planning Mode will increment to the next higher number if another dive is made. TABLE 3.3. WARNING SYMBOLS 3.6.3. Flying After Diving The no-fl ying time is shown in the center window next to the airplane image. Flying or travelling to a higher altitude should be avoided at any time the computer counts down the no-fl...
24 hours, and if possible, for 48 hours. • Suunto recommends that fl ying is avoided until all the DAN and UHMS guidelines and the dive computer wait to fl y conditions are satisfi ed.
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You are able to preset alarms before the actual dive. The user program- mable alarms can be set for maximum depth, dive time and time. The alarms activate when: • The preset maximum depth is reached • continuous beep series for 24 seconds or until any button is pressed.
3.8. HIGH ALTITUDE DIVES AND PERSONAL ADJUSTMENT The dive computer can be adjusted both for diving at altitude and also to increase the conservatism of the mathematical nitrogen model. 3.8.1. Altitude Adjustment When programming the instrument for the correct altitude, you need to select the correct Altitude Mode according to Table 3.4.
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The Vytec also allows experienced divers who are willing to accept a greater level of risk to adjust the RGBM model. The default setting is RGB100 which gives full (100%) RGBM effect. Suunto strongly advises to use full RGBM effect. Statistically very experienced divers have less incidents with DCI.
mode (RGB50). See Table 3.6. To advise the diver that attenuated RGBM has been set, the Diver Attention Symbol is constantly displayed (Table 3.3.) TABLE 3.6. RGBM MODEL SETTINGS 3.9. ERROR CONDITIONS The dive computer has warning indicators that alert the user to react to certain situations that would signifi...
4. MENU BASED MODES To make yourself familiar with the menu based functions, please use your Quick Re ference Guide supplied with the Vytec to gether with the information in this chapter. The main menu based functions are grouped under 1) memory, 2) dive simulation and 3) setting modes.
EXIT / QUIT! By pressing the SMART 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. THE LIST OF THE MENU BASED MODES 1.
4.1. MEMORIES AND DATA TRANSFER [1 MEMORY] The memory options (Fig. 4.5.) for this dive computer include the combined Logbook and Dive Profi le Memory (Fig. 4.6. – 4.12.), Dive History Memory (Fig. 4.13. – 4.14.) and the Data Transfer and PC-Interface functions (Fig. 4.15.).
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Fig. 4.8. Logbook, page II. Main dive related data. Fig. 4.9. Logbook, page III. Surface interval time, average depth and consumed air indicated by ÄP. Fig. 4.10. Logbook, page IV. Profi le of specifi c dive. When Select is displayed next to the mode but- ton the scroll buttons will scroll through the four pages of the selected dive.
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Page III (Fig. 4.9.) • dive number in the dive series • average depth • surface interval time before the dive • DP describing Cylinder pressure drop during the dive (if wireless trans - mission enabled (HP on)). Page IV (Fig. 4.10.) •...
999 dives and 999 diving hours. When these maximum values are reached, the counters will start again from zero. NOTE! The maximum depth can be reset to 0.0 m [0 ft] using the optional PC-Interface unit and Suunto Dive Manager software.
4.1.3. Data Transfer and PC-Interface [3 TR-PC] The instrument can be connected to an IBM compatible personal com- puter (PC), using the optional PC-Interface and software. With the PC- Interface unit, dive data from the dive computer can be downloaded to a PC.
[1 SIMDIVE] The Dive Simulator mode is an excellent tool for becoming familiar with the dive computer and planning your dives. Suunto recommends using the dive simulator to run through different dive scenarios. The Dive Simulator will allow you to “perform” dive profi les of your choice and see what the display would look like during an actual dive.
multiple gas mixes are set they will be changed as soon as allowed maximum depth is reached upon ascent and in the order of: MIX1, MIX2 and MIX3 To enter the Dive Simulator mode select MODE- 2 SIMUL- 1 SIMDIVE (Fig. 4.17. and 4.18.).
Now you are able to select from the three alti- tude modes (Fig. 4.23.) and the three personal modes (Fig. 4.24.) and the two RGBM effect, full normal or limited attenuated, modes (Fig. 4.25.) and safety stop/deepstop 1 or 2 minutes (Fig.
Fig. 4.28. Setting primary gas mix (MIX1). Oxygen percentage is 32%, oxy- gen 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 percent- age and to set oxygen partial setting value.
4.3.2.2. Adjusting Date [2 AdJ DATE] To enter the Date Setting Mode select MODE- 3 SET- 2 SET TIME- 2 AdJ DATE. After enter- ing this mode you are able to set the correct year, month and day in this order (Fig. 4.31.). NOTE! •...
Fig. 4.33. Setting Backlight On Time. Press scroll buttons to change backlight on/off and to set time value. Fig. 4.34. Setting Metric/ Imperial units. Fig. 4.35. Setting Dive Computer model. NOTE! When the backlight turned OFF, it does not illuminate when an alarm is given. 4.3.3.2.
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...
DO NOT use the dive computer, if you de- tect 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. •...
A leak must be corrected without delay, as mois- ture will seriously damage the unit, even beyond repair. SUUNTO does not take any responsibility for damage caused by moisture in the dive computer, if the instructions of this manual are not carefully followed.
Check for any traces of fl ooding, 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.
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Check the condition of the O-ring; a defective O-ring may indicate sealing or other problems. Dispose the old O-ring, even if it seems to be in good condition. Check that the battery compartment, battery holder and lid are clean. Clean with soft cloth if necessary. 10.
Wireless Transmitter Battery Replacement NOTE! It is advisable to contact an authorized Suunto dealer for trans- mitter battery replacement. It is imperative that the change is made in a proper manner to avoid any leakage of water into the transmitter.
Defects caused by improper battery installation are not covered by the warranty. BATTERY KIT The transmitter battery kit includes a 3.0 V CR ˚ AA lithium cell battery and a lubricated O-ring. When handling the battery do not make contact with both of the poles at the same time.
NOTE! It is imperative to wait at least 30 seconds before re-installing the transmitter battery. When the battery is re-installed the transmitter sends an overpressure (“---“) signal on code 12 for 10 seconds, after which it goes to normal operation, and shuts down after 5min. 9.
TABLE 6.1. NO-DECOMPRESSION TIME LIMITS (MIN) FOR VARI- OUS DEPTHS (M) FOR THE FIRST DIVE OF A SERIES TABLE 6.2. NO-DECOMPRESSION TIME LIMITS (MIN) FOR VARI- OUS DEPTHS [FT] FOR THE FIRST DIVE OF A SERIES ALTITUDE DIVING The atmospheric pressure is lower at high altitudes than at sea level. After traveling to a higher altitude, the diver will have additional nitrogen in his body, compared to the equilibrium situation at the original altitude.
The Suunto Reduced Gradient Bubble Model (RGBM) is a modern algo- rithm for predicting both dissolved and free gas in the tissues and blood of divers. 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.
When this is detected in ad- dition 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.
• the blinking of the bar graph stops, when the PO • audible alarms are given and the actual PO it exceeds the preset limit • in dive planning the maximum depth according to the O maximum PO 6.4. TECHNICAL SPECIFICATION Dimensions and weight: Vytec: •...
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It is recommended that the instrument be stored in a dry place at room temperature. NOTE! Do not leave the dive computer in direct sunlight! Tissue Calculation Model • Suunto Deep Stop RGBM algorithm (developed by SUUNTO and Bruce R. Wienke, BS, MS and PhD). • 9 tissue compartments •...
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and dive violations. The “M” values are tracked up to 100 hours after a dive. • The EAN and oxygen exposure calculations are based on recommendations by R.W. Hamilton, PhD and currently accepted exposure time limit tables and principles. Battery Vytec: •...
If a claim under this or any other warranty appears to be necessary, return the product, freight prepaid, to your Suunto dealer or distribu- tor or qualifi ed repair facility. Include your name and address, proof of purchase and/or service registration card, as required in your country.
SuuntoSports.com offers you a number of features that help you to get the most out of your sport and your Suunto Vytec. If you already own a personal Suunto sports instrument you can access all sport-specifi c functions through registration. If you do not yet have an instrument you may either log in as a guest or register yourself.
My Suunto The My Suunto section of the site is meant for your personal information. You can store information about yourself, your wristop computer, your sporting and training activities, etc. When you upload your personal logs to SuuntoSports.com they are displayed in your personal information.
Sport Forums SuuntoSports.com has its own forum for each Suunto sport. The basic features and functions are the same for all sport forums—sport-specifi c 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.
9. GLOSSARY Air Time Altitude dive Ascent rate ASC RATE Ascent time ASC TIME Ceiling Ceiling Zone Central Nervous System Toxicity CNS% Compartment The amount of dive time remaining, based on a calculation of cylinder pressure and ambient pressure and present air consump- tion.
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Decompression Decompression range Decompression illness Dive series Dive time Enriched Air Nitrox Equivalent Air Depth Floor Time spent at a decompression stop or range before surfacing, to allow absorbed nitrogen to escape naturally from tissues. On a decompression stop dive the depth range, between the fl...
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Abbreviation for Oxygen Enriched Air Nitrox. Abbreviation for Oxygen Limit Fraction. Abbreviation for Oxygen Tolerance Unit. Is used to measure the Whole-Body-Toxicity. A term used by SUUNTO for the values displayed in the Oxygen Toxicity bargraph. The value is either the CNS% or the OTU%.
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Oxygen partial pressure Limits the maximum depth to which the RGBM Reduced Gradient Bubble Model Repetitive dive Residual nitrogen SURF TIME Surface interval time Oxygen percentage or oxygen fraction in the breathing gas. Standard air has 21% oxygen. used Nitrox mixture can safely be used. The maximum partial pressure limit for enriched air diving is 1.4 bar.
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Tissue group Whole-Body Toxicity Theoretical concept used to model bodily tis- sues for the construction of decompression tables or calculations. Another form of oxygen toxicity, which is caused by prolonged exposure to high oxygen partial pressures. The most com- mon symptoms are irritation in the lungs, a burning sensation in the chest, coughing and reduction of the vital capacity.
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.
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MODE MAIN SUBMODE BASED MENU BASED SUBMODE MENU BASED MENU...
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Printed in Finland 08.2005 / Esa Print Oy / 151047...
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