Suunto D3 manual Emergency Ascents, Freediving

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and limitations of the instrument. If you have any questions about the manual or the freediving computer, contact your SUUNTO dealer before diving with the D3.

Always remember that you are responsible for your own safety.

When used properly, this freediving computer is an outstanding tool for assisting properly trained, certified divers in planning and executing sport dives. It is not a substitute for certified scuba instruction or freediving training.

1.1.1. EMERGENCY ASCENTS

In the unlikely event that D3 malfunctions during a dive, follow the emergency procedures provided by your certified dive training agency or, alternatively,

STEP 1: Assess the situation calmly and then move promptly to less than 18 m [60 ft].

STEP 2: At 18 m [60 ft], slow down your ascent rate to 10 m/min [33 ft/min] and move to a depth between 3 and 6 meters [10 to 20 ft].

STEP 3: Stay there as long as you assess your air supply will safely allow. After reaching the surface stay out of the water for at least 24 hours.

1.1.2. FREEDIVING

Freediving, and particularly freediving in combination with scuba diving, may have risks that have not been researched and are not commonly known.

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Contents USER’S Guide Suunto COPYRIGHT, Trademark and Patent Notice Definition of WARNINGS, Cautions and NotesPage Page Page Table of Contents Surface Interval After a Gauge dive Set Gauge ModePage Choice of Diving and Watch Modes Safety PrecautionsIntroduction Freediving Emergency AscentsPush buttons of the D3 D3 is controlled with four push buttons as follows see Fig Getting AcquaintedFunctions Push ButtonsPage Water contact and depth sensor Water ContactsEither the date a, the seconds of the current time Time Mode TimeTimekeeping Display Stopwatch displays hours, minutes and seconds Stopwatch Timer UPPage Downtimer Timer D Diving with the D3 Gauge Dive Mode selectedBefore Diving Activation and PRE-CHECKS Startup II. Battery Power IndicatorBattery Power Indicator and LOW Battery Warning Display Operation Battery Power IndicatorUser Definable Functions and Alarms Bookmark Function Presetting Dive AlarmsPresetting the Displays in the Free Mode Freediving Before Diving in the Free ModeDuring the Freedive 12. Freediving Day History Freediving DAY HistorySurface Interval After a Freedive Gauge Diving Maximum Operating Depth Planner MOD Presetting the Displays in the Gauge Mode 17. Dive has just begun Basic Dive DataAscent Rate Indicator Ascent Rate IndicatorSurface Interval After a Gauge Dive Dive Numbering 8000 ft. The only two exceptions to this recommendation are Flying After DivingDive computer automatically returns to the Time Mode Audible and Visual AlarmsCurrent time blinks for one minute, if no button is pressed Setting Mode is indicated by the SET text and mode indicatorSetting TIME, Date and Dual Time Time Setting Mode SETYear, month and day are selected. Daily Alarm Setting Mode Daily Alarm Setting ALMPage Timer Setting Mode Timer Settings Timer DSET Gauge Mode Dive Mode Settings DiveGauge Lected dive mode Gauge or Free is displayed FigSET Free Mode To set the depth alarm Dive Alarm Settings Dive ALMAX Dive Time Unit Adjustment Settings AdJ Memory and Data Transfer MEM Memory ModeLogbook and Dive Profile Memory LOG Logbook Memory ModeMaximum depth Total dive time Following information will be shown on four pagesIII Fig Dive Profile Memory PRO Dive History Memory Dive History Memory HIS10. Free Dive History Memory Data Transfer and PC-INTERFACE TR-PC 11. Data Transfer and PC- Interface System Requirements SUUNTOSPORTS.COMMY Suunto Sport Forums CommunitiesGetting Started Care of Your D3 Care and MaintenanceMaintenance Water Resistance Inspection Battery KIT Battery ReplacementThoroughly rinse and dry the computer Battery ReplacementPage Technical Description Technical SpecificationOnds, records the maximum depth of each interval Recording interval in Free mode 1 seconds Memory capacityLife expectancy at 20C 68F with 1 minute Free dives Dives/y Page Warranty Page DCI GlossaryASC Rate DANMOD EANPO2 NitroxNoaa Surf Time Page Page Page Copyright Disposal of the DeviceModes and Operations Store Country TWO Year Warranty Made in Finland Suunto Oy 06 / 2004, 03

D3 specifications

The Suunto D3 is a versatile dive computer designed for both novice and seasoned divers. With a focus on simplicity and reliability, the D3 offers key features that enhance the underwater experience while ensuring safety. It combines advanced technology with an intuitive interface, making it an essential tool for divers.

One of the standout features of the Suunto D3 is its ability to function in multiple modes, including freedive, scuba, and gauge modes. This versatility allows divers to adapt the device based on their chosen activity. In scuba mode, the D3 provides essential information such as current depth, dive time, and no-decompression limits, while the freedive mode is tailored for those looking to monitor their performance during breath-holding dives. The gauge mode is particularly useful for technical dives where external decompression tables might be utilized.

The Suunto D3 is equipped with a user-friendly interface that incorporates a large, clear display, ensuring visibility in various underwater conditions. The screen is designed to be easy to read, featuring bold digits and an organized layout that allows users to quickly access critical dive data. Additionally, the adjustable backlight ensures that divers can easily read the device in low-light conditions.

In terms of construction, the Suunto D3 is built for durability. It features a rugged casing and scratch-resistant mineral glass, allowing it to withstand the demanding conditions of underwater environments. The device is also lightweight, making it comfortable to wear for extended periods, whether diving or engaging in other activities.

Another notable characteristic of the Suunto D3 is its battery life. Designed for long dives, it has an impressive battery that can last through multiple dive sessions before requiring a replacement. This feature alleviates any concerns about the device shutting down in the middle of a dive, providing divers with peace of mind.

Incorporating Suunto’s advanced dive algorithms, the D3 ensures that divers receive accurate and reliable data throughout their underwater excursions. With its combination of robust features, ease of use, and rugged design, the Suunto D3 remains a popular choice among divers who seek a dependable dive computer to accompany them on their underwater adventures. Whether it’s exploring coral reefs or navigating deeper waters, the Suunto D3 is a trustworthy companion that merges performance with simplicity, allowing divers to focus on the beauty of the underwater world.
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