Suunto D4 manual Diving in Nitrox mode DIVEnitrox, Before diving in Nitrox mode

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DECOMPRESSION DIVE, ABOVE CEILING.

NOTE DOWNWARD POINTING ARROW, ER WARNING AND ALARM. YOU SHOULD IMMEDIATLY (WITHIN

3 MINUTES) DESCEND TO OR BELOW CEILING.

In addition, an Error warning (Er) reminds you that you have only three minutes to correct the situation. You must immediately descend to, or below, the ceiling.

If you continue to violate the decompression, the dive computer will go into a permanent Error Mode. In this mode, the instrument can only be used as a depth gauge and timer. You must not dive again for at least 48 hours. (See Section 5.7. Error conditions).

6.2. Diving in NITROX mode (DIVEnitrox)

NITROX mode (DIVEnitrox) is the second dive mode available in Suunto D4 and is used when using oxygen- enriched gas mixtures.

6.2.1. Before diving in NITROX mode

If set to the NITROX mode, the correct oxygen percentage of the gas in your cylinder must always be entered into the computer to ensure correct nitrogen and oxygen calculations. The dive computer adjusts its mathematical nitrogen and oxygen calcu- lation models accordingly. The dive computer will not accept fractional percentage values of oxygen concentration. Do not round up fractional percentages. For example, 31.8% oxygen should be entered as 31%. Rounding up will cause nitrogen percentages

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Contents Page Getting Started with Your Suunto D4 Diving Care and Maintenance of MY Suunto Diving Computer Intellectual Property Welcome to the World of Suunto Diving INSTRU- Ments Page Any confusion resulting from neglecting to follow this users Page Selected O2% and a Maximum PO2 of 1.4 BAR Have not Personally Verified ITS Contents Dive Computer will not Accept Fractional Page Navigating in the menus Suunto D4 AT a GlanceButton symbols and functions Mode Symbol Button Press Main functionsDown Long Enter Setting mode Getting Started with Your Suunto D4 Time mode settingsMore than 5 seconds Setting the alarmSetting the dual time Setting the timeSetting the units Setting the dateSetting the tones Setting the backlightAC water contacts StopwatchPage Before Diving Emergency ascents Suunto RGBM/Deep Stop AlgorithmNitrox Dive computer limitationsFree diving Audible and visual alarmsAlarm type Oxygen alarms in Nitrox mode Alarm type Alarm reasonOmitted decompression Error conditionsDive mode settings Rgbm SettingSetting the depth alarm Setting the dive-time alarm Setting the depth notify alarm Free modeSetting the personal/altitude adjustments Setting the nitrox valuesSetting the sample rate Setting the surface time notify alarm Free modeSetting the Deep Stops Setting the Rgbm valuesActivation and pre-checks Dive mode activation Accessing Dive modePage Diving at altitude Battery power indicationHow the Altitude value is set Alt. adjustment value Altitude rangePersonal adjustments Personal ad Condition Desired tables Rgbm setting Desired Tables Effect Safety StopsRecommended Safety Stops Mandatory Safety Stops To or below Ceiling Deep stops Diving in AIR mode DIVEair DivingBasic dive data Down Button Toggles Between Maximum Depth and Current Time Bookmark Ascent rate indicatorDecompression dives Ceiling, ceiling zone, floor and decompression range Page Display above the floor Display below the floorDisplay above the ceiling Display at the ceiling zoneBefore diving in Nitrox mode Diving in Nitrox mode DIVEnitroxOxygen displays Default nitrox settingsDown Button Oxygen limit fraction OLF Diving in Free mode DIVEfreeDay History There is no ascent rate monitoring in the Free modeNew one Free dive time limit Alarms Symbol on display After DivingSurface interval Dive numbering AIR and Nitrox Free Dive Repetitive dive planningFlying after diving Memory mode Dive Planning mode MEMPlan See .7. Error conditions Dive logbook MEMLogbook Dive numbering shown during dive planningBeen replaced according to the instructions Dive history MEMHistory Scuba HistoryFree Dive History Suunto Dive Manager SDM Page Page Water Contacts and Push Buttons Care and Maintenance of MY Suunto Diving COM- PuterMaintenance Water Resistance Inspection FAQsWhat are Original Suunto ACCESSORIES? Page By the warranty Battery ReplacementTemperature display Technical DataDepth gauge Calendar clockDisplays only in Nitrox mode Logbook/dive profile memoryOperating conditions Battery Tissue calculation modelRgbm Suunto Rgbm adaptive decompression Diver Attention Symbol Advice to Extend Surface IntervalNo-decompression limits No-decompression time limits for various depths m No-decompression time limits for various depths ft Oxygen exposure Altitude divingPage Intellectual Property Copyright TrademarkPatent notice Disclaimers User’s responsibility12.2. CE Page Exclusions and Limitations Warranty PeriodAccess to Suunto warranty service Page Other important notices Limitation of Liability Disposal of the Device DAN DCI Glossary103 104 105 Customer Service Contacts Suunto Oy 10/2007