Suunto D4 manual Decompression dives

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6.1.4. Decompression dives

When your NO DEC TIME becomes zero, your dive becomes a decompression dive so you must perform one or more decompression stops on your way to the surface. The NO DEC TIME on your display will be replaced by an ASC TIME, and a CEILING notation will appear. An upward pointing arrow will also prompt you to start your ascent. If you exceed the no-decompression limits on a dive, the dive computer will provide the decompression information required for ascent. After this, the instrument will continue to provide subsequent interval and repetitive dive information.

Rather than requiring you to make stops at fixed depths, the dive computer lets you decompress within a range of depths (continuous decompression).

The ascent time (ASC TIME) is the minimum amount of time needed to reach the surface in a decompression dive. It includes:

•the time needed to ascend to the ceiling at an ascent rate of 10 m/33 ft per minute. The ceiling is the shallowest depth to which you should ascend

•the time needed at the ceiling

•the time needed at the Mandatory Safety Stop (if any)

•the time needed to reach the surface after the ceiling and Safety Stops have been completed

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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 Suunto D4 AT a Glance Navigating in the menusButton symbols and functions Symbol Button Press Main functions ModeDown Long Enter Setting mode Time mode settings Getting Started with Your Suunto D4Setting the alarm More than 5 secondsSetting the time Setting the dual timeSetting the date Setting the unitsSetting the backlight Setting the tonesStopwatch AC water contactsPage Before Diving Suunto RGBM/Deep Stop Algorithm Emergency ascentsDive computer limitations NitroxAudible and visual alarms Free divingAlarm type Alarm reason Oxygen alarms in Nitrox mode Alarm typeError conditions Omitted decompressionDive mode settings Setting RgbmSetting the depth alarm Setting the depth notify alarm Free mode Setting the dive-time alarmSetting the nitrox values Setting the personal/altitude adjustmentsSetting the surface time notify alarm Free mode Setting the sample rateSetting the Rgbm values Setting the Deep StopsActivation and pre-checks Accessing Dive mode Dive mode activationPage Battery power indication Diving at altitudeAlt. adjustment value Altitude range How the Altitude value is setPersonal adjustments Personal ad Condition Desired tables Safety Stops Rgbm setting Desired Tables EffectRecommended Safety Stops Mandatory Safety Stops To or below Ceiling Deep stops Diving Diving in AIR mode DIVEairBasic dive data Down Button Toggles Between Maximum Depth and Current Time Ascent rate indicator BookmarkDecompression dives Ceiling, ceiling zone, floor and decompression range Page Display below the floor Display above the floorDisplay at the ceiling zone Display above the ceilingDiving in Nitrox mode DIVEnitrox Before diving in Nitrox modeDefault nitrox settings Oxygen displaysDown Button Diving in Free mode DIVEfree Oxygen limit fraction OLFThere is no ascent rate monitoring in the Free mode Day HistoryNew one Free dive time limit After Diving Alarms Symbol on displaySurface interval Dive numbering AIR and Nitrox Repetitive dive planning Free DiveFlying after diving Memory mode Dive Planning mode MEMPlan See .7. Error conditions Dive numbering shown during dive planning Dive logbook MEMLogbookBeen replaced according to the instructions Scuba History Dive history MEMHistoryFree Dive History Suunto Dive Manager SDM Page Page Care and Maintenance of MY Suunto Diving COM- Puter Water Contacts and Push ButtonsMaintenance FAQs Water Resistance InspectionWhat are Original Suunto ACCESSORIES? Page Battery Replacement By the warrantyTechnical Data Temperature displayDepth gauge Calendar clockLogbook/dive profile memory Displays only in Nitrox modeOperating conditions Tissue calculation model BatteryRgbm Diver Attention Symbol Advice to Extend Surface Interval Suunto Rgbm adaptive decompressionNo-decompression limits No-decompression time limits for various depths m No-decompression time limits for various depths ft Altitude diving Oxygen exposurePage Copyright Trademark Intellectual PropertyPatent notice User’s responsibility Disclaimers12.2. CE Page Warranty Period Exclusions and LimitationsAccess to Suunto warranty service Page Other important notices Limitation of Liability Disposal of the Device Glossary DAN DCI103 104 105 Customer Service Contacts Suunto Oy 10/2007