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1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS ............ 7 2. WARNINGS, CAUTIONS, AND NOTES .............................................. 9 3. SUUNTO D4 AT A GLANCE .......................................................... 15 3.1. Navigating in the menus ......................................................... 15 3.2. Button symbols and functions ................................................... 16 4. GETTING STARTED WITH YOUR SUUNTO D4 .................................. 19 4.1. TI
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5.8. DIVE mode settings .............................................................. 33 5.8.1. Setting the depth alarm ..................................................... 35 5.8.2. Setting the depth notify alarm (FREE mode) ............................. 36 5.8.3. Setting the dive-time alarm ................................................. 36 5.8.4. Setting the nitrox values .................................................... 37 5.8.5. Setting the personal/altitude adjustments .............
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6.1.3. Ascent rate indicator ........................................................ 52 6.1.4. Decompression dives ....................................................... 53 6.2. Diving in NITROX mode (DIVEnitrox) .......................................... 58 6.2.1. Before diving in NITROX mode ............................................ 58 6.2.2. Oxygen displays ............................................................. 59 6.2.3. Oxygen limit fraction (OLF) ................................
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9. BATTERY REPLACEMENT ........................................................... 82 10. TECHNICAL DATA ................................................................... 83 10.1. Technical specifications ........................................................ 83 10.2. RGBM ............................................................................ 86 10.2.1. Suunto RGBM adaptive decompression ................................ 87 10.2.2. No-decompression limits ...............................
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1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRU- MENTS Suunto D4 was designed to help you get the most out of your diving. Suunto D4 simplifies your diving experience because all the information you need re- lating to depth, time and decompression status is available on one easy-to-read screen. 7
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To get the most out of your Suunto D4 please read this instruction manual carefully and make sure you understand the use, displays, and limitations of the instrument before using it. To make life easier, we've included a glossary of dive-specific termin- ology at the back of the manual. 8
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2. WARNINGS, CAUTIONS, AND NOTES Throughout this manual, important safety icons are displayed. Three classifications are used to separate these icons by their order of importance: WARNING is used in connection with a procedure or situation that could result in serious injury or death CAUTION is used in connection with a procedure or situation that could result in damage to the device NOTE is used to emphasize important information Before you go on to read the manual itself, it is extremely impor
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NOT FOR PROFESSIONAL USE! Suunto dive computers are WARNING intended for recreational use only. The demands of commercial or professional diving may expose the diver to depths and condi- tions that tend to increase the risk of decompression illness (DCI). Therefore, Suunto strongly recommends that the device is not used for any commercial or professional diving activities. ONLY DIVERS TRAINED IN THE PROPER USE OF SCUBA WARNING DIVING EQUIPMENT SHOULD USE A DIVE COMPUTER! No dive computer can rep
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SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS WARNING LIMIT THEIR MAXIMUM DEPTH TO 40 M/130 FT OR TO THE DEPTH CALCULATED BY THE COMPUTER BASED ON THE SELECTED O % AND A MAXIMUM PO OF 1.4 BAR! 2 2 WARNING DIVES THAT REQUIRE DECOMPRESSION STOPS ARE NOT RECOMMENDED. YOU SHOULD ASCEND AND BEGIN DE- COMPRESSION IMMEDIATELY WHEN THE DIVE COMPUTER SHOWS YOU THAT A DECOMPRESSION STOP IS REQUIRED! Note the blinking ASC TIME symbol and the upward pointing ar- row. WARNING USE BACK-UP INSTRUMENTS! Make sur
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YOU ARE ADVISED TO AVOID FLYING ANY TIME THE COM- WARNING PUTER COUNTS DOWN THE NO-FLY TIME. ALWAYS ACTIV- ATE THE COMPUTER TO CHECK THE REMAINING NO-FLY TIME PRIOR TO FLYING! Flying or traveling to a higher altitude within the no-fly time can greatly increase the risk of DCI. Review the recommendations given by Divers Alert Network (DAN) in Section 7.4. Flying after diving. THE DIVE COMPUTER SHOULD NEVER BE TRADED OR WARNING SHARED BETWEEN USERS WHILE IT IS IN OPERATION! Its information will no
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THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL WARNING PERCENTAGE VALUES OF OXYGEN CONCENTRATION. DO NOT ROUND UP FRACTIONAL PERCENTAGES! For example, 31.8% oxygen should be entered as 31%. Rounding up will cause nitrogen percentages to be understated and will affect decompres- sion calculations. If you want to adjust the computer to provide more conservative calculations, use the personal adjustment feature to affect decompression calculations, or reduce the PO 2 setting to affect oxygen exposure
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This device contains a Lithium cell battery. To reduce the risk of WARNING fire or burns, do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water. Replace only with manu- facturer-specified batteries. Recycle or dispose of used batteries properly. It is not possible to change between AIR, NITROX and FREE NOTE DIVE modes before the instrument has counted down the no-fly time. There is one exception to this: You can change from AIR to NI- TROX mode even during
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E D D O O W M N 3. SUUNTO D4 AT A GLANCE Present Depth Active Water Contact Daily Alarm Indicator Indicator Dive Alarm Indicator Diver Attention Symbol No-Fly Icon Current Time Display Mode Indicator No-Decompression Time Total Ascent Time Safety Stop Indicator Ceiling Depth Safety/Deep Stop Time Surface Interval Time No-Fly Time Date Dual Time Ascent Rate Bar Graph Maximum Depth O (Nitrox Mode) 2 Time Seconds Display Stopwatch Weekday Dive Time Dive Number Temperature PO
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3.2. Button symbols and functions The table below explains the main functions of the dive computer's buttons. The buttons and their use will be explained in more detail in the relevant sections of the manual. 16
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Table 3.1. Button symbols and functions Symbol Button Press Main functions MODE Short Switch between main modes Switch from submode to main mode Activate backlight in DIVE mode MODE Long Activate backlight in other modes SELECT Short Select a submode Select and accept settings Displays Day History in FREE mode (free dive mode) UP Short Toggle between alternative displays Change submode Increase values Change shortcuts in TIME and DIVE modes DOWN Short Toggle between alternative displays Change s
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Symbol Button Press Main functions DOWN Long Enter Setting mode 18
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4. GETTING STARTED WITH YOUR SUUNTO D4 To get the most out of your Suunto D4, take some time to personalize it and really make it YOUR computer. Set the correct time and date, as well as the alarms and tones, unit and backlight settings. Suunto D4 is a very user-friendly dive computer, and you will quickly become familiar with its functions. Make absolutely sure that you know your computer and have it set up as you want it BEFORE getting into the water. 4.1. TIME mode settings The first thing yo
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The display is illuminated by holding down the MODE button for NOTE more than 5 seconds. Now that you know how to toggle between the shortcuts, you can start to set them. The following figure shows how to enter the TIME SETTINGS menu. USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN ALARM, TIME, DUAL TIME, DATE, UNITS, BACKLIGHT AND TONES. 4.1.1. Setting the alarm The dive computer has a daily alarm function. When the da
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ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. 4.1.2. Setting the time In the TIME SETTING mode, you are able to set the hour, minute, and second, as well as choose between 12 and 24 hour display. ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. 4.1.3. Setting the dual time In the DUAL TIME SETTING mode you can select the hour and minute of a dual time - useful when traveling to a differen
