Suunto D4 User Manual

EN

WARNINGSUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERSLIMIT THEIR MAXIMUM DEPTH TO 40 M/130 FT OR TO THEDEPTH CALCULATED BY THE COMPUTER BASED ON THESELE

14. DISPOSAL OF THE DEVICEPlease dispose of the device in an appropriate way, treatingit as electronic waste. Do not throw it in the garbage. If youwi

GLOSSARYAltitude diveA dive made at an elevation greater than 300 m/1000 ft above sea level.Ascent rateThe speed at which the diver ascends toward the

Decompression illnessAny of a variety of maladies resulting either directly or indirectly from theformation of nitrogen bubbles in tissues or body flu

NitroxIn sports diving, refers to any mix with a higher fraction of oxygen thanstandard air.NOAAUnited States National Oceanic and Atmospheric Adminis

Reduced Gradient Bubble ModelModern algorithm for tracking both dissolved and free gas in divers.Repetitive diveAny dive whose decompression time limi

CUSTOMER SERVICE CONTACTSGlobal Help Desk +358 2 284 11 60Suunto USA Phone +1 (800) 543-9124Canada Phone +1 (800) 776-7770Suunto website www.suunto

Suunto Oy 10/2007

WARNINGYOU ARE ADVISED TO AVOID FLYING ANY TIME THE COM-PUTER COUNTS DOWN THE NO-FLY TIME. ALWAYS ACTIV-ATE THE COMPUTER TO CHECK THE REMAINING NO-FLY

WARNINGTHE DIVE COMPUTER WILL NOT ACCEPT FRACTIONALPERCENTAGE VALUES OF OXYGEN CONCENTRATION. DONOT ROUND UP FRACTIONAL PERCENTAGES! For example,31.8%

WARNINGThis device contains a Lithium cell battery. To reduce the risk offire or burns, do not disassemble, crush, puncture, short externalcontacts, o

3. SUUNTO D4 AT A GLANCEUPDOWNSELECTMODESafety Stop Indicator No-Fly Icon Diver Attention Symbol Date Dual Time Maximum Depth O2(Nitrox Mode)Time Asce

3.2. Button symbols and functionsThe table below explains the main functions of the dive computer's buttons. The buttonsand their use will be exp

Table 3.1. Button symbols and functionsMain functionsPressButtonSymbolSwitch between main modesShortMODESwitch from submode to main modeActivate back

Main functionsPressButtonSymbolEnter Setting modeLongDOWN18

4. GETTING STARTED WITH YOUR SUUNTO D4To get the most out of your Suunto D4, take some time to personalize it and reallymake it YOUR computer. Set the

NOTEThe display is illuminated by holding down the MODE button formore than 5 seconds.Now that you know how to toggle between the shortcuts, you can s

1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS ... .. .. .. .. . 72. WARNINGS, CAUTIONS, AND NOTES ...

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON.4.1.2. Setting the timeIn th

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON.4.1.4. Setting the dateUse the DATE SETTING mode

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON.4.1.6. Setting the backlightUse the BACKLIGHT SET

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON.NOTEWhen the tones are off, there are no audible

Contamination or dirt on the water contact may prevent this automatic activation. It istherefore important that the water contact is kept clean. The c

5. BEFORE DIVINGDo not attempt to use the dive computer without reading this user's manual in its en-tirety, including all the warnings. Make sur

5.1. The Suunto RGBM/Deep Stop AlgorithmSuunto’s Reduced Gradient Bubble Model (RGBM), utilized in the Suunto D4, predictsboth dissolved and free gas

3.Stay there for as long as your air supply will safely allow. After reaching the sur-face, do not dive for at least 24 hours.5.3. Dive computer limit

5.5. Free divingFree diving, and particularly Free diving in combination with scuba diving, may presentrisks that have not been researched and are not

Table 5.1. Audible and visual alarm typesAlarm reasonAlarm typeDive computer is activated.Short single beepDive computer automatically returns to the

5.8. DIVE mode settings . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 335.8.1. Setting the depth alarm

Table 5.2. Preset alarm typesAlarm reasonAlarm typePreset maximum depth hasbeen exceeded.Continuous beep series for 24 secondsMaximum depth blinks as

NOTEWhen the backlight is turned OFF, it does not illuminate when analarm is activated.WARNINGWHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THEMAXIMUM

Once in the permanent Error mode, only the Er warning is shown in the center window.The dive computer will not show times for ascent or stops. However

Table 5.4. FREE modeNITROX modeAIR modeSettingXXXDepth alarmX Depth notify alarmXXXDive time alarmX Surf time notify alarmXNitroxXXPersonal/Altitude

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN DIV

The depth alarm is factory-set to 30 m/131 ft, but you can adjust it according to yourpersonal preference, or switch it off altogether. The depth rang

5.8.4. Setting the nitrox valuesIf set to the NITROX mode, the correct oxygen percentage of the gas in your cylindermust always be entered into the co

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON.5.8.6. Setting the surface time notify alarm (FRE

5.8.8. Setting the Deep StopsIf set to ON, iterative Deep Stops will be prompted. The length of the individual DeepStops can be set to 1 or 2 minutes.

5.9.1. Accessing DIVE modeThe Suunto D4 has three diving modes: AIR mode for diving with standard air only,NITROX mode for diving with oxygen enriched

6.1.3. Ascent rate indicator .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 526.1.4. Decompression dives ...

At this time, perform your pre-checks, making sure that:•the instrument operates in the correct mode and provides a complete display(AIR/NITROX/FREE m

5.9.3. Battery power indicationTemperature or internal oxidation of the battery affect the battery voltage. If the instru-ment is stored for a long pe

When programming the instrument for the correct altitude, you need to select thecorrect Altitude Adjustment settings according to Table 5.5, Altitude

5.9.5. Personal adjustmentsThere are personal factors that can affect your susceptibility to DCI, which you canpredict in advance, and input into the

Table 5.6. Personal Adjustment settingsDesired tablesConditionPersonal ad-justment valueDefaultIdeal conditionsP0Progressively more conservativeSome r

Table 5.7. RGBM model settingsEffectDesired TablesRGBM settingFull RGBM effectsStandard Suunto RGBMmodel (Default)100%Smaller RGBM effects, higher ris

4/#.6-2$+$"3,.#$WHEN STOP IS DISPLAYED, MAKE A RECOMMENDED SAFETY STOP FOR 3 MINUTES.NOTEThe Recommended Safety Stop, as the name implies, is rec

4/#.6-2$+$"3,.#$WHEN CEILING AND STOP ARE DISPLAYED, MAKE A ONE MINUTE MANDATORY SAFETY STOP IN THE DEPTH ZONE BETWEEN 6 M AND 3 M.You must not a

5.11. Deep stopsDeep Stops are safety stops that occur deeper than traditional stops, with the purposeof minimizing microbubble formation and excitati

6. DIVINGThis section contains instructions on how to operate the dive computer and interpretits displays. You’ll find that this dive computer is easy

9. BATTERY REPLACEMENT ... 8210. TECHNICAL DATA .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .

•your present depth in meters/feet•the available no-decompression time in minutes as NO DEC TIME•the ascent rate presented as a bar graph on the right

6.1.2. BookmarkIt is possible to record bookmarks in the profile memory during a dive. These bookmarksare displayed when scrolling the profile memory

6.1.4. Decompression divesWhen your NO DEC TIME becomes zero, your dive becomes a decompression diveso you must perform one or more decompression stop

WARNINGYOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DIS-PLAYED BY THE INSTRUMENT! The ascent time will increaseif you:•remain at depth•ascend slower tha

The depth of the ceiling and floor will depend on your dive profile. The ceiling depthwill be fairly shallow when you enter the decompression mode, bu

Display below the floorThe blinking ASC TIME and an upward pointing arrow indicate that you are below thefloor. You should start your ascent immediate

Display at the ceiling zoneWhen you reach the ceiling zone, the display will show you two arrows pointing ateach other (the “hour glass” icon). Below

4/#.6-2$+$"3,.#$DECOMPRESSION DIVE, ABOVE CEILING. NOTE DOWNWARD POINTING ARROW, ER WARNING AND ALARM. YOU SHOULD IMMEDIATLY (WITHIN 3 MINUTES) D

to be understated and will affect decompression calculations. If you want to adjust thecomputer to provide more conservative calculations, use the per

4/#.6-2$+$"3,.#$NITROX DIVE MODE ACTIVATION. MAXIMUM OPERATIONAL DEPTH BASED ON SET O2% (21%) AND PO2 (1.4 BAR) IS 56.7 M.If set to NITROX mode,

1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRU-MENTSSuunto D4 was designed to help you get the most out of your diving.Suunto D4 simplifies your divi

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$UP BUTTON TOGGLES BETWEEN PO2, OLF, DIVE TIME AND WATER TEMPERATUR

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$The free dive ends as soon as you surface (at 0,5 m/ 1,6 ft).4/#.6-2$+$"3,.#$NOTEThe FREE mode does not

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$The Day History shows the average depth of all dives, the deepest depth of the dayas well as the time, the l

6.3.2. Free dive time limitThe FREE mode has a time limit of 10 minutes. After 10 minutes, Suunto D4 willautomatically change from free dive to scuba

7. AFTER DIVINGOnce back at the surface, Suunto D4 continues to provide post-dive safety informationand alarms. Calculations to enable repetitive dive

Or, in the alternative displays, the following information will be shown:•maximum depth of last dive in meters/feet•dive time of last dive in minutes,

7.2.2. FREE DiveDive series is only for one day. The day's dive numbering and latest dive informationresets to 0 at midnight, and each day there

•A minimum surface interval of 12 hours would be required in order to be reasonablyassured a diver will remain symptom free upon ascent to altitude in

The dive time and date are registered in the Logbook memory. Always check beforediving that the time and date are correctly set, especially after trav

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$WHEN ENTERING THE MEMPLAN MODE THE DISPLAY FI

To get the most out of your Suunto D4 please read this instruction manual carefullyand make sure you understand the use, displays, and limitations of

Dive numbering shown during dive planningDives belong to the same repetitive dive series if the instrument was still countingdown the no-fly time at t

•Maximum depth•date of dive•type of dive (AIR, NITROX, FREE, bottom timer (G))•dive start time•dive number•oxygen percentage•total dive time (in minut

7.5.3. Dive history (MEMHistory)The dive history is a summary of all the dives recorded by the dive computer.You can view both your scuba and free div

4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$4/#.6-2$+$"3,.#$The Free Dive history gathers history of the entire sequence of free dives. Unlike thed

•depth profile of the dive•dive time•preceding surface interval time•dive number•dive start time (year, month, day and time)•dive computer settings•ox

7.7. www.suuntosports.com and Suunto Diving World at www.suunto.com/divingWhen you have dived and transferred your dive data to your Suunto Dive Manag

8. CARE AND MAINTENANCE OF MY SUUNTO DIVING COM-PUTERThe SUUNTO dive computer is a sophisticated precision instrument. Although it isdesigned to withs

• Should moisture appear inside the case, immediately have the instrumentchecked by your SUUNTO dealer or distributor.• Should you detect scratches, c

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 o

WHAT ARE ORIGINAL SUUNTO ACCESSORIES?Original Suunto accessories are only distributed through Suunto`s worldwide networkof authorized Suunto distribut

2. WARNINGS, CAUTIONS, AND NOTESThroughout this manual, important safety icons are displayed. Three classificationsare used to separate these icons by

As far as the national laws permit, repairing the product does not extend or otherwiseaffect the warranty period. However, part(s) repaired or replace

9. BATTERY REPLACEMENTNOTEIt is advisable to contact an authorized Suunto representative forbattery replacement. It is imperative that the change is m

10. TECHNICAL DATA10.1. Technical specificationsDimensions and weight:• Diameter: 50.0 mm/1.97 in• Thickness: 16.0 mm/0.61 in• Weight: 85g/3.0 ozDepth

Displays only in NITROX mode: • Oxygen %: 21 - 50• Oxygen partial pressure display: 0.5 - 1.6 bar• Oxygen Limit Fraction: 1 - 200% with 1% resolutionL

Tissue calculation model: • Suunto Deep Stop RGBM algorithm (developed by Suunto and Bruce R. Wienke,BSc, MSc, PhD)• 9 tissue compartments• Tissue com

•The quality of the battery. (Some lithium batteries may exhaust unexpectedly,which cannot be tested in advance)•The time the dive computer has been s

10.2.1. Suunto RGBM adaptive decompressionThe Suunto RGBM algorithm adapts its predictions of both the effects of microbubblebuild-up and adverse dive

10.2.2. No-decompression limitsThe no-decompression limits displayed by the dive computer for the first dive to asingle depth (see Table 10.1, No-deco

Table 10.1. No-decompression time limits for various depths (m)No-decompression time limits (mins) for various depths (m)for the first dive of a serie

Table 10.2. No-decompression time limits for various depths (ft)No-decompression time limits (mins) for various depths (ft)for the first dive of a ser

WARNINGNOT FOR PROFESSIONAL USE! Suunto dive computers areintended for recreational use only. The demands of commercialor professional diving may expo

10.2.3. Altitude divingThe atmospheric pressure is lower at high altitudes than at sea level. After travelingto a higher altitude, you will have addit

Oxygen related information displayed by the dive computer is also designed to ensurethat all warnings and displays occur at the appropriate phases of

11. INTELLECTUAL PROPERTY11.1. CopyrightThis user's manual is copyrighted and all rights are reserved. It may not, in whole orin part, be copied,

12. DISCLAIMERS12.1. User’s responsibilityThis instrument is intended for recreational use only. Suunto D4 must not be used forobtaining measurements

13. SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING COM-PUTERS AND SUUNTO DIVING COMPUTER ACCESSORIESThis Limited Warranty is valid as of January 1st, 2007.

Warranty PeriodThe Warranty Period starts at the date of retail purchase by the original end-userpurchaser. The Product may consist of several differe

2.user manuals or any third-party software (even if packed or sold with the Suuntohardware), settings, content or data, whether included or downloaded

If a claim under this Limited Warranty appears to be necessary, please contact yourlocal authorized Suunto retailer – for contact information please v

Other important notices Please remember to take backup copies of all important content and data stored inyour Product because content and data may be

Limitation of Liability TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE MANDATORY LAWS,THIS LIMITED WARRANTY IS YOUR SOLE AND EXCLUSIVE REMEDY AND IS IN