Suunto D9tx, D9t Series User Manual
User’s GUide
en
SUUNTO D9tx
1. WELCOME TO THE WORLD OF SUUNTO DIVE COMPUTERS . .... .. .. .. .. .. .. 8
2. WARNINGS, CAUTIONS, AND NOTES . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 9
3. SUUNTO USER INTERFACE . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 16
3.1. Navigating in the menus . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 17
3.2. Button symbols and functions . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 19
4. GETTING STARTED .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 21
4.1. TIME mode settings .............................................................. 21
4.1.1. Setting the alarm ............................................................ 22
4.1.2. Setting the time .............................................................. 23
4.1.3. Setting the dual time ........................................................ 23
4.1.4. Setting the date .............................................................. 24
4.1.5. Setting the units ............................................................. 24
4.1.6. Setting the backlight .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 25
4.1.7. Setting the contrast ......................................................... 25
4.1.8. Setting the tones .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 26
4.2. Stopwatch .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 26
4.3. AC water contacts . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 27
4.4. Learning how to use your compass ............................................ 28
4.4.1. Compass display . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 29
4.4.2. Locking a bearing . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 30
4.4.3. Compass settings .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 31
5. BEFORE DIVING ...................................................................... 35
5.1. The Suunto Technical RGBM . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 35
5.2. Emergency ascents . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 36
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5.3. Dive computer limitations . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 36
5.4. Mixed gas diving .................................................................. 37
5.5. Audible and visual alarms .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 37
5.6. Error conditions . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 42
5.7. Wireless transmission .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 43
5.7.1. Installing the wireless transmitter . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 43
5.7.2. Pairing and code selection . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 44
5.7.3. Transmitting data . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 47
5.8. DIVE mode settings .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 48
5.8.1. Setting the gases . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 50
5.8.2. Setting the personal/altitude adjustments .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 51
5.8.3. Setting the tank pressure pairing . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 52
5.8.4. Setting the tank pressure alarm . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 53
5.8.5. Setting the depth alarm . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 53
5.8.6. Setting the dive-time alarm . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 54
5.8.7. Setting the sample rate . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 54
5.8.8. Setting the deep stops . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 55
5.8.9. Setting the units ............................................................. 55
5.9. Activation and pre-checks ....................................................... 55
5.9.1. Accessing DIVE mode ...................................................... 56
5.9.2. DIVE mode activation ....................................................... 56
5.9.3. Battery power indication . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 58
5.9.4. Diving at altitude . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 59
5.9.5. Personal adjustments . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 60
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5.10. Safety Stops . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 63
5.10.1. Recommended Safety Stops . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 63
5.10.2. Mandatory Safety Stops .................................................. 64
5.11. Deep stops . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 65
6. DIVING . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 67
6.1. Diving in the AIR mode (DIVE Air) ............................................. 67
6.1.1. Basic dive data . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 68
6.1.2. Bookmark . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 69
6.1.3. Tank pressure data . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 70
6.1.4. Ascent rate indicator ........................................................ 72
6.1.5. Safety Stops and Deep Stops .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 73
6.1.6. Stopwatch (Timer) . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 73
6.1.7. Decompression dives . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 74
6.2. Diving in the MIXED mode .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 79
6.2.1. Before diving in the MIXED mode ......................................... 79
6.2.2. Oxygen and helium displays .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 81
6.2.3. Oxygen limit fraction (OLF%) . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 82
6.2.4. Gas change and multiple breathing gas mixes .......................... 83
6.3. Diving in the GAUGE mode (DIVE Gauge) . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 84
7. AFTER DIVING ......................................................................... 86
7.1. Surface interval ................................................................... 86
7.2. Dive numbering . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 87
7.3. Repetitive dive planning . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 88
7.4. Flying after diving ................................................................. 88
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7.5. DIVE PLANNING mode (PLAN NoDec) .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 89
7.5.1. Dive numbering shown during dive planning . .. .. .. .. .. .. .. .. .. .. .. .. .. . 91
7.6. MEMORY mode . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 91
7.6.1. Dive logbook (MEM Logbook) ............................................. 92
7.6.2. Dive history .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 94
7.7. Suunto DM4 with Movescount . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 95
7.8. Movescount .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 96
8. CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER .. .. .. .. .. 97
9. BATTERY REPLACEMENT ......................................................... 102
9.1. Computer battery replacement ................................................ 102
9.2. Wireless transmitter battery replacement .................................... 103
9.2.1. Transmitter battery kit . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 103
9.2.2. Required tools .............................................................. 103
9.2.3. Replacing the transmitter battery .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 103
10. TECHNICAL DATA . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 106
10.1. Technical specifications ....................................................... 106
10.2. RGBM .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 109
10.2.1. Suunto Technical RGBM decompression model . .. .. .. .. .. .. .. .. .. .. 110
10.2.2. Suunto RGBM adaptive decompression .............................. 111
10.2.3. Altitude diving .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 112
10.3. Oxygen exposure .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 113
11. INTELLECTUAL PROPERTY .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 115
11.1. Copyright ........................................................................ 115
11.2. Trademark . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 115
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11.3. Patent notice .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 115
12. DISCLAIMERS ...................................................................... 116
12.1. User’s responsibility .......................................................... 116
12.2. CE ............................................................................... 116
13. SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING COMPUTERS AND
SUUNTO DIVING COMPUTER ACCESSORIES . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 117
14. DISPOSAL OF THE DEVICE . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 122
GLOSSARY . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 123
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1. WELCOME TO THE WORLD OF SUUNTO DIVE COMPUTERS
Suunto D9tx wristop dive computer is designed to help you get the most out of your
diving.
Suunto D9tx is the world’s first wrist top size dive computer to integrate a tilt-compensated 3D digital compass, wireless tank pressure reception, and trimix functions.
It simplifies your diving experience because all the information you need relating to
depth, time, tank pressure, decompression status, and direction is now available on
one easy-to-read screen.
The Suunto D9tx User's Guide contains vitally important information which enables
you to become familiar with your Suunto wristop dive computer. To understand the
use, displays, and limitations of the instrument before using it, please read this user's
guide carefully, and save it for further reference. Note also that a glossary is included
at the back of the user's guide to help you understand dive-specific terminology.
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2. WARNINGS, CAUTIONS, AND NOTES
Throughout this user's guide, important safety icons are displayed. Three classifications
are used to separate these icons by their order of importance:
WARNING
is used in connection with a procedure or situation that could
result in serious injury or death
CAUTION
is used in connection with a procedure or situation that could
result in damage to the device
NOTE
is used to emphasize important information
Before you go on to read the user's guide itself, it is extremely important that you read
the following warnings. These warnings are intended to maximize your safety while
using Suunto D9tx and must not be ignored.
WARNING
READ THIS user's guide! Carefully read this user's guide in its
entirety, paying close attention to all the warnings listed below,
including Section 5. BEFORE DIVING. Ensure that you fully understand the use, displays and limitations of the dive computer,
because any confusion resulting from neglecting to follow this
user's guide or from improper use of this device could cause you
to commit errors that may lead to serious injury or death.
9
WARNING
NOT FOR PROFESSIONAL USE! Suunto dive computers are
intended for recreational use only. The demands of commercial
or professional diving may expose the diver to depths and conditions that tend to increase the risk of decompression illness (DCI).
Therefore, Suunto strongly recommends that the device is not
used for any commercial or professional diving activities.
WARNING
ONLY DIVERS TRAINED IN THE PROPER USE OF SCUBA
DIVING EQUIPMENT SHOULD USE A DIVE COMPUTER! No
dive computer can replace the need for proper dive training. Insufficient or improper training may cause you to commit errors
that may lead to serious injury or death.
WARNING
THERE IS ALWAYS A RISK OF DECOMPRESSION ILLNESS
(DCI) FOR ANY DIVE PROFILE, EVEN IF YOU FOLLOW THE
DIVE PLAN PRESCRIBED BY DIVE TABLES OR A DIVE
COMPUTER. NO PROCEDURE, DIVE COMPUTER, OR DIVE
TABLE CAN PREVENT THE POSSIBILITY OF DCI OR OXYGEN
TOXICITY! An individual’s physiological make-up can vary from
day to day. The dive computer cannot account for these variations.
You are strongly advised to remain well within the exposure limits
provided by the instrument to minimize the risk of DCI. As an
added precaution, you should consult a physician regarding your
fitness before diving.
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WARNING
SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS
LIMIT THEIR MAXIMUM DEPTH TO 40 M/130 FT OR TO THE
DEPTH CALCULATED BY THE COMPUTER BASED ON THE
SELECTED O2% AND A MAXIMUM PO2OF 1.4 BAR! Exposure
to greater depths increases the risk of oxygen toxicity and decompression sickness.
WARNING
DIVES WITH REQUIRED DECOMPRESSION STOPS ARE NOT
RECOMMENDED. YOU SHOULD ASCEND AND BEGIN DECOMPRESSION IMMEDIATELY WHEN THE DIVE COMPUTER
SHOWS YOU THAT A DECOMPRESSION STOP IS REQUIRED!
Note the blinking ASC TIME symbol and the upward pointing arrow.
WARNING
USE BACK-UP INSTRUMENTS! Ensure that you use back-up
instrumentation, including a depth gauge, submersible pressure
gauge, timer or watch, and have access to decompression tables
whenever diving with the dive computer.
WARNING
PERFORM PRE-CHECKS! Always activate and check the device
before diving in order to ensure that all Liquid Crystal Display
(LCD) segments are completely displayed, that the device has
not run out of battery power, and that the oxygen, altitude, personal, and Safety/Deep Stop are correct.
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WARNING
YOU ARE ADVISED TO AVOID FLYING ANY TIME THE COMPUTER COUNTS DOWN THE NO-FLY TIME. ALWAYS ACTIVATE THE COMPUTER TO CHECK THE REMAINING NO-FLY
TIME PRIOR TO FLYING! Flying or traveling to a higher altitude
within the no-fly time can greatly increase the risk of DCI. Review
the recommendations given by Divers Alert Network (DAN) in
Section 7.4. Flying after diving. There can never be a flying after
diving rule that is guaranteed to completely prevent decompression illness!
WARNING
THE DIVE COMPUTER SHOULD NEVER BE TRADED OR
SHARED BETWEEN USERS WHILE IT IS IN OPERATION! Its
information will not apply to someone who has not been wearing
it throughout a dive, or sequence of repetitive dives. Its dive profiles must match that of the user. If it is left on the surface during
any dive, the dive computer will give inaccurate information for
subsequent dives. No dive computer can take into account dives
made without the computer. Thus, any diving activity up to four
days prior to initial use of the computer may cause misleading
information and must be avoided.
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WARNING
DO NOT EXPOSE THE SUUNTO D9tx's OPTIONAL TANK
PRESSURE TRANSMITTER TO ANY GAS MIX CONTAINING
MORE THAN 40% OXYGEN! Enriched air with greater oxygen
content presents a risk of fire or explosion and serious injury or
death.
WARNING
DO NOT DIVE WITH A CYLINDER OF ENRICHED AIR IF YOU
HAVE NOT PERSONALLY VERIFIED ITS CONTENTS AND
ENTERED THE ANALYZED VALUE INTO YOUR DIVE COMPUTER! Failure to verify cylinder contents and enter the appropriate O2% into your dive computer will result in incorrect dive
planning information.
WARNING
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 to be understated and will affect decompression calculations. If you want to adjust the computer to provide
more conservative calculations, use the personal adjustment
feature to affect decompression calculations, or reduce the PO
2
setting to affect oxygen exposure according to the entered O2%
and PO2 values.
13
WARNING
SET THE CORRECT ALTITUDE ADJUSTMENT SETTING
MODE! When diving at altitudes greater than 300 m/1,000 ft, the
Altitude Adjustment feature must be correctly selected in order
for the computer to calculate the decompression status. The dive
computer is not intended for use at altitudes greater than 3,000
m/10,000 ft. Failure to select the correct Altitude Adjustment setting, or diving above the maximum altitude limit will result in erroneous dive and planning data.
WARNING
SET THE CORRECT PERSONAL ADJUSTMENT SETTING
MODE! Whenever it is believed that factors that tend to increase
the possibility of DCI exist, it is recommended that you use this
option to make the calculations more conservative. Failure to
select the correct Personal Adjustment setting will result in erroneous dive and planning data.
WARNING
This device contains a Lithium cell battery. To reduce the risk of
fire or burns, do not disassemble, crush, puncture, short external
contacts, or dispose of in fire or water. Replace only with manufacturer-specified batteries. Recycle or dispose of used batteries
properly.
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NOTE
It is not possible to change between AIR, MIXED and GAUGE
modes before the instrument has counted down the no-fly time.
There is one exception to this: You can change from AIR to MIXED
mode even during the no-fly time.
When planning both air and nitrox dives during the same dive
series, you should set the instrument in MIXED mode and modify
the gas mix accordingly.
In GAUGE mode the no-fly time is always 48 hours.
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3. SUUNTO USER INTERFACE
Safety Stop Indicator
No-Fly Icon
Date
Dual Time
Maximum Depth
O
2
/He% (Mixed Mode)
Time
Tank Pressure
Dive Alarm Indicator
Daily Alarm Indicator
Tank pressure bar
graph
Wireless Transmission
Indicator
Low Battery Warning
Present Depth
Current Time Display
Mode Indicator
No-Decompression Time
Total Ascent Time
Ceiling Depth
Remaining Air Time
Safety/Deep Stop Time
Surface Interval Time
No-Fly Time
Compass Display
Tissue Saturation Graph
Diver Attention Symbol
Ascent Rate Bar Graph
Active Water Contact
Indicator
Seconds Display
Stopwatch
Weekday
Dive Time
Temperature
PO
2
% (Mixed Mode)
OLF% (Mixed Mode)
NOTE
If no button is pressed for 5 minutes, the dive computer beeps
and returns to the TIME mode automatically.
16
3.1. Navigating in the menus
Suunto D9tx has four main operating modes - TIME mode (TIME), DIVE mode (DIVE),
PLAN mode (PLAN), and MEMORY mode (MEM). It also has a COMPASS submode,
which can be activated from either TIME or DIVE modes. To toggle between the main
modes, press the MODE button. To select a submode in DIVE and MEM modes, press
the UP/DOWN buttons.
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SETTINGS
Alarm
Time
Dual Time
Date
Units
Backlight
Contrast
Tones
SUB-MODES
Air
Mixed
Gauge
SETTINGS
Gases
Personal/Altitude
Tank Press Pairing
Tank Press Alarm
Depth Alarm
Dive Time Alarm
Sample Rate
Deepstop
Units
TIME DIVE PLAN MEM
SETTINGS
Calibrate
Declination
Timeout
COMPASS
SUB-MODES
Logbook
History
LIGHT LIGHT LIGHT LIGHT
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3.2. Button symbols and functions
The table below explains the main functions of the dive computer's buttons. The buttons
and their use is explained in more detail in the relevant sections of the user's guide.
Table 3.1. Button symbols and functions
Main functionsPressButtonSymbol
Switch between main modes
Switch from submode to main mode
Activate backlight in DIVE mode
ShortMODE
Activate backlight in other modes
Activate stopwatch in DIVE mode
LongMODE
Select a submode
Select and accept settings
Select stopwatch to stop or start in DIVE mode
ShortSELECT
Activate compass in TIME and DIVE modesLongSELECT
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Main functionsPressButtonSymbol
Toggle between alternative displays
Change submode
Increase values
ShortUP
Activate gas switching in MIXED modeLongUP
Toggle between alternative displays
Change submode
Decrease values
ShortDOWN
Enter Setting mode
Toggle between ceiling and remaining air time display
LongDOWN
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4. GETTING STARTED
To get the most out of your Suunto D9tx, use some time to personalize it and really
make it YOUR computer. Set the correct time and date, as well as the alarms and
tones, unit and backlight settings. Then, calibrate and test the compass function.
Suunto D9tx is a very user-friendly dive computer, and you will quickly become familiar with its functions. Make absolutely sure that you know your computer and have it
set up as you want it BEFORE getting into the water.
4.1. TIME mode settings
The first thing to do with your Suunto D9tx is to set the TIME mode shortcuts: the time,
alarm, dual time, date, units, backlight, contrast, and tones.
The figure below shows how to toggle between different shortcuts in the TIME mode:
NOTE
The seconds display reverts to date display after 5 minutes in
order to save battery power.
NOTE
The display is illuminated by holding down the MODE button for
more than 2 seconds.
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Now that after you know how to toggle between the shortcuts, you can start to set
them.
The figure below shows how to enter the TIME Settings menu.
USE UP AND DOWN BUTTONS
TO TOGGLE BETWEEN ALARM, TIME,
DUAL TIME, DATE, UNITS, CONTRAST
AND TONES.
4.1.1. Setting the alarm
The dive computer has a daily alarm function. When the daily alarm activates, the
screen blinks and the alarm sounds for 60 seconds. Press any button to stop the
alarm.
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ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
4.1.2. Setting the time
In the Time setting mode, you are able to set the hour, minute, and second, as well
as choose between a 12 and 24 hour display.
ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
4.1.3. Setting the dual time
In the Dual Time setting mode, you are able to select the hour and minute of a dual
time, which is useful when traveling to a different time zone.
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ADJUST WITH UP AND
DO WN BUTTONS. ACCEPT
WITH SELECT BUTTON.
4.1.4. Setting the date
In the Date setting mode, you are able to set the year, month, and day. The day of
the week is automatically calculated in accordance with the date. In metric units the
date is presented as DD/MM, and in imperial units as MM/DD.
ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
4.1.5. Setting the units
In the Units setting mode, you are able to choose whether the units are displayed in
either the metric or imperial system (meters/feet, Celsius/Fahrenheit, and so on).
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ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
4.1.6. Setting the backlight
In the Backlight setting mode, you are able to turn the backlight ON or OFF and to
define how long it stays on for (5, 10, 20, 30, or 60 seconds). When the backlight is
turned OFF, it does not illuminate when an alarm sounds.
ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
4.1.7. Setting the contrast
In the Contrast setting mode, you are able to set the contrast of the display (the value
range is between 0 and 10).
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ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
4.1.8. Setting the tones
In the Tones setting mode, you are able to activate or deactivate the tones.
ADJUST WITH UP AND
DOWN BUTTONS. ACCEPT
WITH SELECT BUTTON.
NOTE
When the tones are off, there are no audible alarms.
4.2. Stopwatch
The Stopwatch function in Suunto D9tx measures elapsed and split times.
A separate stopwatch (dive timer) can also be used in the DIVE mode. For more in-
formation, refer to Section 6.1.6. Stopwatch (Timer).
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USE DOWN BUTTON TO START
STOPWATCH AND TAKE A SPLIT TIME.
THE UP BUTTON STOPS THE STOPWATCH
AND LONG PRESSING IT RESETS IT.
4.3. AC water contacts
The water and data transfer contact is located on the side of the case. When submerged, the water contact poles are connected by the conductivity of the water and
the “AC” symbol appears on the display. The AC text is shown until the water contact
deactivates.
AC APPEARS IN THE TOP RIGHT
CORNER OF THE DISPLAY, WHEN THE DIVE
COMPUTER IS IN CONTACT WITH WATER.
THIS ALSO ACTIVATES THE DIVE MODE.
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Contamination or dirt on the water contact may prevent this automatic activation.
Therefore, it is important that the water contact is kept clean. The contact can be
cleaned with fresh water and a soft brush, for example a tooth brush.
NOTE
Water or moisture build-up around the water contact may cause
the contact to activate automatically. This can happen, for example, when washing your hands or sweating. If the water contact
activates in the TIME mode, the AC symbol will appear on the
display, and will be shown until the water contact deactivates. To
save battery power, you should deactivate the water contact by
cleaning it and/or drying it with a soft towel.
4.4. Learning how to use your compass
Suunto D9tx is the first dive computer in the world to integrate a digital compass. It
can be used both while diving and on the surface, and can be accessed by longpressing the SELECT button.
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IF ACCESSED FROM TIME MODE,
TIME AND BEARING ARE DISPLAYED
AT THE BOTTOM OF THE SCREEN.
ACCESSED FROM DIVE MODE,
CURRENT DEPTH, AND TIME OR
MAXIMUM DEPTH, TANK PRESSURE,
AS WELL AS BEARING OR DIVE TIME
OR TEMPERATURE ARE DISPLAYED.
NOTE
When accessed from DIVE mode, toggle between the alternative
displays by pressing the UP/DOWN buttons.
4.4.1. Compass display
The Suunto D9tx displays the compass as a graphical representation of a compass
rose. The rose displays the cardinal and half cardinal points, in addition to which, the
current bearing is also displayed numerically.
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4.4.2. Locking a bearing
A bearing can be locked to help you follow a selected course, and directional arrows
point towards the locked bearing. The last locked bearing is stored and is available
the next time the compass is activated. In the DIVE mode the locked bearings are
also stored in the log.
TO LOCK A BEARING,
PRESS SELECT.
The Suunto D9tx also provides help for navigating square and triangular patterns, as
well as navigating a return heading. This is made possible by following graphical
symbols in the center of the compass display:
Table 4.1. Locked bearing symbols
ExplanationSymbol
You are traveling towards the locked bearing
You are 90 (or 270) degrees from the locked bearing
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ExplanationSymbol
You are 180 degrees from the locked bearing
You are 120 (or 240) degrees from the locked bearing
4.4.3. Compass settings
You can define the compass settings (Calibration, Declination and Timeout) in the
COMPASS mode:
Calibration
Because of changes in the surrounding magnetic field, the Suunto D9tx electronic
compass occasionally needs to be re-calibrated. During the calibration process, the
compass adjusts itself to the surrounding magnetic field . As a basic rule, you should
calibrate the compass whenever it does not seem to operate properly, or after replacing
the dive computer's battery.
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