Page 5 - SAFETY; Types of safety precautions
1 SAFETY Types of safety precautions WARNING: - is used in connection with a procedure or situation that may result in serious injury or death. CAUTION: - is used in connection with a procedure or situation that will result in damage to the product. NOTE: - is used to emphasize important information...
Page 6 - Safety precautions
Safety precautions WARNING: ONLY TRAINED DIVERS SHOULD USE A DIVE COMPUTER! Insufficient training for any kind of diving, including freediving, may cause a diver to commit errors, such as incorrect use of gas mixtures or improper decompression, that may lead to serious injury or death. WARNING: You ...
Page 10 - Emergency ascents
Emergency ascents In the unlikely event that the dive computer malfunctions during adive, follow the emergency procedures provided by your certifieddive training agency to immediately and safely ascend. 10
Page 11 - GETTING STARTED; Display states and views
2 GETTING STARTED 2.1 Display states and views Suunto DX has four main modes: TIME , DIVE , PLANNING and MEMORY . Change modes by pressing [MODE]. Unless DIVE mode is turned off, Suunto DX automatically switches to DIVE mode if you are more than 1.2 m (4 ft) under water. DIVE PLAN MEM 12:00 1.12 TH ...
Page 12 - Daily alarm
4. 3. 9. 10. 2. 1. 7. 5. 6. 8. Icon Description 1 Daily alarm 2 Dive alarm 3 No-fly 4 Safety stop 12
Page 13 - Low battery; General Settings; see
Icon Description 5 Tank pressure (if available) 6 Wireless transmission (if available) 7 Low battery 8 Active water contact 9 Diver attention symbol 10 Ascent rate 2.3 Set up To get the most out of your Suunto DX, take some time to read thismanual and familiarize yourself with the modes and settings...
Page 14 - Software version check; Version; Dive modes
2.4 Software version check Please note that this user guide is for the latest software version ofSuunto DX. If you have an older version, some features operatedifferently.To check the software version:1. Keep [DOWN] pressed to enter settings.2. Press [DOWN] to scroll to Version and enter with [SELEC...
Page 15 - Stopwatch; Access the stopwatch in time or dive mode as explained in
To change settings for a dive mode, keep [DOWN] pressed while inthat mode. For further information about dive mode settings,please refer to the respective dive mode section of this user guide. Stopwatch Access the stopwatch in time or dive mode as explained in 3.21 Stopwatch.To use the stopwatch:1. ...
Page 16 - FEATURES
3 FEATURES 3.1 Activation and pre-checks Unless the dive mode turned off, the dive mode activatesautomatically when you dive deeper than 1.2 m (4 ft). However, youshould switch to dive mode before diving to check altitude andpersonal settings, battery condition and so on.Each time your Suunto DX ent...
Page 18 - reading against your back-up pressure gauge.
After the automatic checks, Suunto DX enters surface mode. At thispoint, you should perform your manual checks before entering thewater.Ensure that:1. Suunto DX is in the correct mode and provides complete displays. 2. Altitude setting is correct.3. Personal setting is correct.4. Deepstops are set c...
Page 19 - cannot be activated when the low battery warning is displayed.
temperatures, the low battery warning may appear even thoughthe battery has enough capacity.In these cases, re-enter dive mode and check the battery power. Ifthe battery is low, the Low Battery warning comes on. Replace Battery Battery Low 12:00 1.12 TH If the low battery icon appears in surface mod...
Page 21 - blinks; SLOW
Alarm Explanation repeated for maximumthree minutesPO2 value blinks High priority alarmfollowed by 'Change gas'beep, sounded twotimes.PO2 value blinks PO2 value is smaller than 0.18 bar(Mixed or CCR mode only). The depthis too shallow and the ambientpressure is too low for the current gas.The oxygen...
Page 22 - blinks and an
Alarm type Alarm reason Low priority alarmfollowed by 'Startascending' beep,sounded two times. ASC TIME blinks and an arrow points upwards. No-decompression dive becomes adecompression stop dive. Depth isbelow the decompression floor level.You should ascend to, or above, thefloor. Low priority alarm...
Page 23 - DEEPSTOP; and timer
Alarm type Alarm reason DEEPSTOP blinks and an arrow pointsdownwards. Low priority alarmfollowed by 'Startdescending' beep,repeated for threeminutes.An arrow pointsdownwards. Mandatory safety stop violated. Youshould descend to complete the safetystop. Low priority alarmfollowed by two shortbeeps. D...
Page 26 - BACKLIGHT; When the backlight is off, it does not illuminate when an
WARNING: DO NOT EXCEED THE MAXIMUM ASCENT RATE! Rapid ascents increase the risk of injury. You should always make the mandatory and recommended safety stops if you have exceeded the maximum recommended ascent rate. If the mandatory safety stop is not completed, the decompression algorithm penalizes ...
Page 27 - The calendar clock is the default mode of Suunto DX .; Time
You can view bookmarks when scrolling the dive profile in thelogbook.Each bookmark records present depth, time, water temperature,heading (if the compass is enabled), and tank pressure (if available). 3.6 Calendar clock The calendar clock is the default mode of Suunto DX . 3.6.1 Time In the time set...
Page 28 - Imperial; and; Dual Time
4. Repeat for month and day.5. Press [MODE] to exit. 3.6.3 Units In the units setting, choose whether the units are displayed in themetric or Imperial system.1. While in time mode, keep [DOWN] pressed.2. Press [UP] to scroll to Units and press [SELECT]. 3. Press [DOWN] to toggle between Metric and I...
Page 31 - Try Again; appears. If calibration continues to; Calibration
Calibrate the compass by slowly rotating the unit in your hand inlarge figure-8 loops..During the calibration process, the compass adjusts itself to thesurrounding magnetic field.If the calibration fails, Try Again appears. If calibration continues to fail, move to another location and try again.Whe...
Page 32 - East; or; West; and confirm with; Declination Degrees
3. Press [DOWN] to toggle to East or West and confirm with [SELECT]. 4. Set Declination Degrees with [DOWN] or [UP]. 5. Press [MODE] to save and exit. 3.7.3 Setting compass timeout You can define how long the compass stays on after you haveactivated it. Reset the timeout with any button press while ...
Page 33 - mode, the locked bearings are also; Symbol
The last locked bearing is stored and available the next time thecompass is activated. In DIVE mode, the locked bearings are also stored in the log. To lock a bearing:1. With the compass active, hold the watch in front of you and turn yourself towards your target. 2. Press [SELECT] to lock the curre...
Page 34 - Display contrast; Contrast
Symbol Explanation You are 180 degrees from the lockedbearing.You are 120 (or 240) degrees from thelocked bearing. 3.8 Depth alarm By default the depth alarm sounds at 30 m (100 ft). You can adjustthe depth according to your personal preference or switch it off.To adjust the depth alarm:1. While in ...
Page 35 - History
3. Use [DOWN] or [UP] to change the contrast from 0 (lowest) to 10 (highest). 4. Press [MODE] to exit. 3.10 Dive history Suunto DX has a detailed logbook and dive history available inmemory mode.The logbook contains a sophisticated dive profile for each recordeddive. The time between each data point...
Page 36 - Logbook; MEM
Logbook To access the logbook:1. Press [MODE] three time until you come to MEM mode. 2. Press [UP] to select Logbook.3. Press [DOWN] or [UP] to scroll to the log you wish to look at and press [SELECT]. 4. Press [SELECT] to scroll through the pages.5. Press [MODE] to exit.Each log has three pages:1. ...
Page 39 - Air; mode is activated when you enter dive mode. You; Dive Mode; Some settings cannot be changed until five (5) minutes
By default, Air mode is activated when you enter dive mode. You can change which mode is activated or turn dive mode off underthe general settings.To change dive modes:1. While in time mode, keep [DOWN] pressed.2. Press [SELECT] to enter Dive Mode . 3. Change to the desired mode with [UP] or [DOWN] ...
Page 40 - MIXED
• Personal/altitude adjustment (see 3.16 Personal and altitude adjustments) • Tank pressure (see 3.25 Tank pressure) • Tank pressure alarm (see 3.25.4 Tank pressure alarm) • Depth alarm (see 3.8 Depth alarm) • Dive time alarm (see 3.13 Dive time alarm) • Sample rate (see 3.18 Sample rate) • Deepstop...
Page 41 - Changing gases; It is only possible to change to another gas mix if the gas
Changing gases When more than one gas mix is defined, you can change betweenthe defined mixes during a Nitrox dive. When the maximumoperating depth allows for a gas change, the dive computerprompts you to change the gas. When PO2 permits a betterdecompression gas to be used, the dive computer prompt...
Page 43 - move to the next diluent.
3.11.3.1 Closed-circuit gases On a rebreather dive, you need at minimum two closed-circuitgases: one is your pure oxygen tank, and the other is a diluent.The correct oxygen and helium percentages of the diluent gas(es) inyour diluent cylinder(s) must always be entered into the divecomputer (or throu...
Page 44 - OC Gases; After entering values for
Follow the same procedure as the CC gases to define your open-circuit gases under the OC Gases settings. After entering values for Mix1 , you can create additional mixes, Mix2 to Mix8 . Each additional mix can be primary, secondary, or off. Mix1 is always set as a primary gas. To minimize the risk o...
Page 45 - Setpoint switching
NOTE: While setting the gases, notice that the calculated maximum operating depth is displayed in the upper field. You cannot change to this gas before you have ascended above this depth. 3.11.3.3 Setpoints In CCR mode there are two setpoint values that you can set, low and high. Typically you do no...
Page 46 - in meters; SWITCH LOW; Modify setpoints during a dive; CCR
The auto setpoint switching is off by default for the low setpointand on for the high setpoint.To modify setpoint switching:1. While in CCR mode, keep [DOWN] pressed.2. Press [UP] to scroll to SWITCH HIGH and press [SELECT]. 3. Press [DOWN] or [UP] to to toggle On/Off and press [SELECT].4. Press [DO...
Page 47 - Hyperoxic and hypoxic mixes; With; Gauge; mode, you can use Suunto DX as a bottom timer.
1. Keep [UP] pressed.2. Scroll through the settings with [UP] or [DOWN] to access the CC Diluent setting and press [SELECT]. 3. Scroll through the diluent list with [UP] or [DOWN] and press [SELECT] to select a Diluent . Enabled open-circuit gas changes are made in the same way and atthe same time t...
Page 48 - Dive planning mode; PLAN NoDeco
3'55 0'00 Bookmark 1 stored 0'10 3'55 Gauge mode has the following settings • Depth alarm (see 3.8 Depth alarm) • Dive time alarm (see 3.13 Dive time alarm) • Sample rate (see 3.18 Sample rate) Gauge mode is a bottom timer only and thus includes no decompression information or calculations. 3.12 Div...
Page 49 - Dive time alarm; ALARM TIME
3. Press [DOWN] or [UP] to scroll your upcoming dive depths. The depth moves in 3 m (10 ft) increments from 9 m – 45 m (30 ft –150 ft). The no-decompression time limit for the selected depthis shown in the center of the display.If you have dived at least once with Suunto DX, the SURFTIME + field app...
Page 50 - Er; on the display. This indicates that the risk of DCI has; is shown; ER
3.14 Error state (algorithm lock) Suunto DX has warning indicators that alert you to react to certainsituations that would significantly increase the risk of DCI. If you donot respond to these warnings, Suunto DX enters an error state andshows Er on the display. This indicates that the risk of DCI h...
Page 51 - Oxygen calculations; The selected O2% on the alternative display
It is possible to dive with the device when the algorithm is locked,but instead of the decompression information, ER is shown. If you dive again in this error state, the algorithm lock time resets to48 hours when you surface. 3.15 Oxygen calculations During a dive, Suunto DX calculates partial press...
Page 52 - Personal and altitude adjustments; Personal adjustment
• In dive planning, the maximum depth according to the O2% andmaximum PO2 selected 3.16 Personal and altitude adjustments There are several factors that can affect your susceptibility to DCS.Such factors vary between divers and from one day to another.The personal factors which tend to increase the ...
Page 53 - Altitude; adjustment and confirm with
In addition to the personal setting, Suunto DX can be adjusted fordiving at different altitudes. This adjusts the decompressioncalculation according to the selected altitude adjustment. Altitude adjustment Explanation 0 0 – 300 m (0 – 980 ft) (default) 1 300 – 1500 m (980 – 4900 ft) 2 1500 – 3000 m ...
Page 54 - Rebreather diving; CC gases; For rebreather dives, Suunto DX should be used as a; Sample Rate
3.17 Rebreather diving Suunto DX has one mode dedicated to rebreather diving, CCRmode. This mode uses fixed high/low setpoint values which you canmodify in the watch or through DM5.Fixed setpoint calculation enables Suunto DX to be used as abackup dive computer on rebreather dives. It does not contr...
Page 55 - Safety stops and deepstops; When deepstops are enabled, the length of mandatory
3.19 Safety stops and deepstops Safety stops are widely considered good diving practice and are acritical part of most dive tables. The reasons for performing a safetystop include: reducing sub-clinical DCI, microbubble reduction,ascent control, and orientation before surfacing.Suunto DX displays tw...
Page 56 - CEILING; STOP; NEVER ASCEND ABOVE THE CEILING! You must not
In this situation, Suunto DX adds a mandatory safety stop to thedive. The time of this stop depends on the speed violation of theascent rate.The STOP icon is shown in the display. When you reach the depthzone between 6 m and 3 m (18 ft and 9 ft) the following isdisplayed:1. CEILING and STOP 2. Ceili...
Page 57 - Software version
After deepstop is over, the user can change between deepstop andthe timer by long pressing the MODE button.Deepstops are presented the same way as safety stops. Suunto DXnotifies you that you are in the deepstop area by displaying: • CEILING in the top • DEEPSTOP in the center row • Stop depth • Cou...
Page 59 - No Fly
Start and stop the stopwatch by pressing [SELECT]. NOTE: If a deepstop activates while you are using the stopwatch, the timer field is not visible. 3.22 Surface and no-fly time Once back at the surface, Suunto DX continues to provide post-divesafety information and alarms. If, after your dive, you n...
Page 62 - Suunto Fused RGBM; Monitoring continuous multiday diving
Within each series, the dives are given numbers. The first dive of theseries is DIVE 1 , the second DIVE 2 , and so on. If you start a new dive with less than five (5) minutes at the surface,Suunto DX treats the new dive as part of the previous dive. The divetime continues where it left off.After fi...
Page 67 - Low air pressure warnings
seconds. An increase in air consumption decreases the remaining airtime rapidly, while a drop in air consumption increases the air timeslowly. In this way, an overly optimistic air time estimate, caused bya temporary drop in air consumption, is avoided.The remaining air time calculation includes a 3...
Page 68 - batt; Installing and pairing transmitter
1. Installation of Suunto Wireless Transmitter onto your regulator.2. Pairing the transmitter to your Suunto DX.3. Enabling the wireless integration in your Suunto DX settings.The transmitter enters power saving mode with slower datatransmission rate if the tank pressure remains unchanged for moreth...
Page 70 - Text; no conn; is displayed when the unit
3.25.3 Transmitted data After pairing, your Suunto DX receives tank pressure data from thetransmitter.Any time the Suunto DX receives a signal, one of the followingsymbols is shown in the lower left corner of the display. Display Indication Cd:-- No code stored, the dive computer is readyfor pairing...
Page 72 - Tones
3. Press [UP] to turn on the air time reading.4. Press [SELECT].5. Press [MODE] to exit. 3.26 Tones Device tones can be turned on or off. When tones are off, there areno audible alarms.To set tones:1. While in time mode, keep [DOWN] pressed.2. Press [DOWN] or [UP] to scroll to Tones and press [SELEC...
Page 73 - AC
AC The AC is shown until the water contact deactivates. It is important to keep the water contact area clean. Contamination or dirt canprevent automatic activation/deactivation. See 4.1 Handling guidelines. NOTE: Moisture build-up around the water contact may cause the dive mode to activate. This ca...
Page 74 - CARE AND SUPPORT; Handling guidelines
4 CARE AND SUPPORT 4.1 Handling guidelines The Suunto DX dive computer is a sophisticated precisioninstrument. Although it is designed to withstand the rigors ofdiving, you must treat it with the same proper care and caution asany other precision instrument.Handle the unit with care – do not knock o...
Page 75 - Water resistance
Should moisture appear inside the case or battery compartment,immediately have the instrument checked by your Suunto servicecenter.The optional scratch guard for Suunto DX is designed to helpprevent the display from getting scratched. Scratch guards can bepurchased separately from your authorized Su...
Page 76 - never knock or drop the device.; Battery replacement
• avoid subjecting the device to rapid air and water temperaturechanges. • always clean your device with fresh water if subjected to saltwater. • never knock or drop the device. 4.3 Battery replacement Suunto DX displays a battery symbol as a warning when the powergets too low. When this happens, yo...
Page 77 - REFERENCE; Technical specifications; Dimensions and weight; Temperature compensated pressure sensor; Temperature display
5 REFERENCE 5.1 Technical specifications Dimensions and weight • Length: 49 mm (1.94 in) • Width: 49 mm (1.94 in) • Height: 17 mm (0.68 in) • Weight: 107 g (3.77 oz) (with elastomer bracelet), 182 g (42 oz)(with titanium bracelet) Operating Instructions • Water resistance: 200 m (656 ft) (complying ...
Page 78 - Mixed mode; Gas mixtures: up to 8; CCR mode; Dive counter: 0 to 99 for repetitive dives; Calendar clock
• Accuracy: ± 2 °C (± 3.6 °F) within 20 minutes of temperaturechange Mixed mode • Helium: 0–95% • Oxygen: 5–99% • Partial pressure of oxygen (pO2): 0.2 – 3.0 • Oxygen Limit Fraction: 0–200% with 1% resolution • Gas mixtures: up to 8 CCR mode • Helium %: 0–95 • Oxygen %: 5–99 • Partial pressure of ox...
Page 79 - Sample rate in air and mixed modes: default 20 seconds; Tissue calculation model; Suunto Fused RGBM
Compass • Accuracy: +/- 15° • Resolution: 1° • Max. tilt: 45 degrees • Balance: global Timer • Accuracy: 1 second • Display range: 0’00 – 99’59 • Resolution: 1 second Logbook • Sample rate in air and mixed modes: default 20 seconds • Memory capacity: approximately 140 hours with 20-secondrecording i...
Page 81 - repaired by unauthorized Service Center
free of charge either by a) repairing, or b) replacing, or c)refunding, subject to the terms and conditions of this LimitedWarranty. This Limited Warranty is only valid and enforceable in thecountry of purchase, unless local law stipulates otherwise. Warranty Period The Limited Warranty Period start...
Page 82 - has been exposed to chemicals including but not limited to; Access to Suunto warranty service
4. has been exposed to chemicals including but not limited to mosquito repellents. Suunto does not warrant that the operation of the Product will beuninterrupted or error free, or that the Product will work with anyhardware or software provided by a third party. Access to Suunto warranty service You...
Page 83 - Altitude dive
damages. Suunto shall not be liable for delay in rendering warrantyservice. 5.6 Copyright Copyright © Suunto Oy. All rights reserved. Suunto, Suunto productnames, their logos and other Suunto brand trademarks and namesare registered or unregistered trademarks of Suunto Oy. Thisdocument and its conte...
Page 85 - Dive series
Term What it means or body fluids, as a result of inadequatelycontrolled decompression. Dive series A group of repetitive dives between which thedive computer indicates some nitrogen loading ispresent. When nitrogen loading reaches zero thedive computer deactivates. Dive time Elapsed time between le...
Page 86 - No dec time
Term What it means No deco (Nodecompressionstop time) Any dive which permits a direct, uninterruptedascent to the surface at any time. No dec time Abbreviation for no decompression time limit. OC Open-circuit. Scuba that exhausts all exhaled gas. OLF% Oxygen limit fraction. The diver’s current oxyge...
Page 87 - Scuba
Term What it means Residualnitrogen The amount of excess nitrogen remaining in adiver after one or more dives. Scuba Self-contained underwater breathing apparatus. Surface time Elapsed time between surfacing from a dive andbeginning a descent for the subsequent dive. Tissue group Theoretical concept...
Page 89 - INDEX
INDEX A Activation pre-checks, 16 Air mode, 39Alarm, 28Alarms, 19Altitude adjustment, 52Ascent rate, 25 B Backlight, 26Battery, 76 indicators, 18 Bearing, 32Bookmarks, 26 C Calendar clock, 27CCR diving, 54Compass, 29, 32 Calibrate, 30declination, 31timeout, 32 D Date, 27 decompression, 64Decompressi...
Page 92 - SUUNTO CUSTOMER SUPPORT
SUUNTO CUSTOMER SUPPORT 1. www.suunto.com/support www.suunto.com/mysuunto 2. AUSTRALIA +61 1800 240 498 AUSTRIA +43 720 883 104 CANADA +1 800 267 7506 CHINA +86 010 84054725 FINLAND +358 9 4245 0127 FRANCE +33 4 81 68 09 26 GERMANY +49 89 3803 8778 ITALY +39 02 9475 1965 JAPAN +81 3 4520 9417 NETHER...
