Suunto MOSQUITO Manual
Suunto
Dykkercomputer
MOSQUITO
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SUUNTO
MOSQUITO
EN
USER’S GUIDE
SUUNTO MOSQUITO
O
L
F
A
S
C
Present Depth
Maximum Depth
Average Depth in Logbook
Fast Ascent Warning
(SLOW)
AC Indicator
Do Not Fly Icon
Bar Graph:
- Ascent Rate
- Battery Power
- Mode Indicator
Diver Attention Symbol
Temperature
Maximum Depth
Mode Text
Oxygen Percentage in Nitrox
Mode
Week Day
Timer Hours and Minutes
Low Battery Warning
Altitude Adjustment
Mode
Personal Adjustment
Mode
Safety Stop Warning
Safety Stop Indicator
Bar Graph:
- Mode Indicator
- Oxygen Limit Fraction
Daily Alarm
On Indicator
Dive Time
Dive Counter
Oxygen Partial Pressure
in Nitrox Mode
Time
Dual Time
Day, Month
Timer Seconds
Oxygen Partial Pressure
Dive Alarm
On Indicator
Current Time Display
No-Decompression Time
Surface Interval Time
No Flying Time
Total Ascent Time
Ceiling Depth on Decompression Stop
Safety Stop Time
Mandatory Safety Stop Depth and Time
AM/PM Indicator
Arrows:
- Decompression Stop
at the Ceiling Depth
- Mandatory Safety Stop Zone
- Ascent Recommended
- Must Descend
QUICK REFERENCE QUIDE
1
DEFINITION OF WARNINGS, CAUTIONS AND NOTES
Throughout this manual, special references are made when deemed important.
Three classifi cations are used to separate these references by their order of
im por tance.
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.
COPYRIGHT, TRADEMARK AND PATENT NOTICE
This instruction manual is copyrighted and all rights are reserved. It may not, in
whole or in part, be copied, photocopied, reproduced, translated, or reduced to any
media without prior written consent from SUUNTO.
SUUNTO, MOSQUITO, Consumed Bottom Time (CBT), Oxygen Limit Frac tion
(OLF), SUUNTO Reduced Gradient Bubble Model (RGBM), Continuous
Decompression and their logos are all registered or unregistered trademarks of
SUUNTO. All rights are reserved.
Patents have been issued or applied for one or several features of this product.
CE
The CE mark is used to mark conformity with the European Union EMC di rec tive
89/336/EEC. The SUUNTO dive instruments fulfi ll all the required EU di rec tives.
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FIOH, Laajaniityntie 1, FIN-01620 Vantaa, Finland, notifi ed body no.0430, has
EC type-examined this type of personal protective equipment.
This instrument must be serviced by an authorized dealer every second year or
after (whichever comes fi rst). See chapter 6.200 dives
PrEN 13319
PrEN 13319 ”Diving accessories – Depth gauges and combined depth and time
measuring devices – Functional and safety requirements, test methods” is a
Eu ro pe an diving depth gauge standard draft. The MOSQUITO is designed to
comply with this draft standard.
ISO 9001
SUUNTO Oy’s Quality Assurance System is certifi ed by Det Norske Veritas to
be according to the ISO 9001 in all SUUNTO Oy’s operations (Quality Cer tifi cate
No. 96-HEL-AQ-220).
SUUNTO Oy does not assume any responsibility for losses or claims by third
parties, which may arise through the use of this device.
Due to continuous product development, the MOSQUITO is subject to change
without notice.
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WARNING
Read this manual. Carefully read this instruction manual in its entirety
paying close attention to all warnings listed below, including chapter 1.1.
”Safety Pre cau tions”. Make sure that you fully understand the use, displays
and limitations of the dive computer because any confusion resulting from
neglecting to follow this instruction manual or from improper use of this
device may cause a diver to commit errors that may lead to serious injury
or death.
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 exposures that tend to increase the risk of decompression
illness (DCI). Therefore, Suunto strongly recommends that the device be not
used for com mer cial or professional diving activity.
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.
Insuffi cient or improper training may cause diver to commit errors that may
lead to serious injury or death.
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WARNING
There is always a risk of decompression illness (DCI) for any dive profi le even
if you follow the dive plan prescribed by dive tables or a dive computer. No
pro ce dure, dive computer or dive table will 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 measure of safety, you should consult
a physician regarding your fi tness before diving.
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 PO2 of 1.4 bar settings.
WARNING
Dives with required decompression stops are not recommended. You should
as cend 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. Make sure that you use back-up instrumentation
in clud ing a depth gauge, submersible pressure gauge, timer or watch, and have
access to decompression tables whenever diving with a dive computer.
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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
dis played, that the device has not run out of battery power, and that the oxygen,
altitude and personal adjustments are correct. Also, exit the Data Transfer
mode before diving, as the computer does not automatically revert to Dive
mode from Data Transfer mode.
WARNING
You are advised not to fl y any time the computer counts down the no-fl ying
time. Always activate the computer to check the remaining no-fl y time
prior to fl ying. The computer goes into the stand-by display automatically 5
minutes after sur fac ing. Flying or traveling to a higher altitude within no-fl y
time can greatly increase the risk of DCI. Review the recommendations given
by Diver’s Alert Network (DAN) in chapter 3.2.3.4. “Flying After Diving”.
There can never be a fl ying 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 profi les must match
that of the user. If it is left on the surface during any dive, it 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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TABLE OF CONTENTS
1. INTRODUCTION ........................................................................................12
1.1. SAFETY PRECAUTIONS ....................................................................13
1.1.1. Emergency Ascents ......................................................................14
1.1.2. Dive Computer Limitations .........................................................15
1.1.3. Nitrox ..........................................................................................15
1.1.4. Freediving .................................................................................... 15
2. GETTING ACQUAINTED ........................................................................... 17
2.1. FUNCTIONS ......................................................................................... 17
2.2. PUSH BUTTONS ..................................................................................17
2.3. WATER CONTACTS.............................................................................19
2.4. TIME MODE [TIME]............................................................................20
2.4.1. Timekeeping Display ...................................................................20
2.4.2. Stopwatch [Timer] ....................................................................... 21
3. DIVING WITH THE MOSQUITO...............................................................23
3.1 BEFORE DIVING ..................................................................................24
3.1.1. Activation and Pre-checks .......................................................... 24
3.1.2. Battery Power Indicator and Low Battery Warning ..................... 26
3.1.3. User Defi nable Functions and Alarms ......................................... 28
3.1.3.1. Presetting Time Alarm .................................................... 29
3.1.3.2. Presetting Dive Alarms ...................................................29
3.1.4. Bookmark Function ..................................................................... 29
3.2. SCUBA DIVING ................................................................................... 30
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3.2.1. Diving with Air ............................................................................ 30
3.2.1.1. Dive Planning [PLAN] ................................................... 30
3.2.1.2. Presetting the Displays in the Air mode .......................... 32
3.2.1.3. Basic Dive Data .............................................................. 32
3.2.1.4. Safety stops .................................................................... 34
3.2.1.4.1. Recommended Safety Stop .................................. 35
3.2.1.4.2. Mandatory Safety Stop ........................................ 35
3.2.1.5. Ascent Rate Indicator ...................................................... 37
3.2.1.6. Decompression dives ......................................................39
3.2.2. Diving with EAN (Nitrox) ........................................................... 45
3.2.2.1. Before Diving ................................................................ 45
3.2.2.2. Presetting the Displays in the EAN mode ...................... 46
3.2.2.3. Oxygen Displays ............................................................. 47
3.2.2.4. Oxygen Limit Fraction (OLF) ........................................ 48
3.2.3. At the Surface .............................................................................. 49
3.2.3.1. Surface Interval after an Air/EAN Dive .........................49
3.2.3.2. Diver Attention Symbol .................................................. 51
3.2.3.3. Dive Numbering ............................................................. 51
3.2.3.4. Flying After Diving ......................................................... 52
3.2.4. High Altitude Dives and Personal Adjustment ............................ 53
3.2.4.1. Altitude Adjustment ........................................................ 53
3.2.4.2. Personal Adjustment ....................................................... 55
3.2.5. Error Conditions ......................................................................... 57
3.3. FREEDIVING ....................................................................................... 58
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3.3.1. Before Diving in the Free mode ..................................................58
3.3.2. Presetting the Displays in the Free mode .....................................58
3.3.3. During the Freedive .....................................................................59
3.3.4. Freediving Day History................................................................ 59
3.3.5. Exceeding the Freediving Time Limit ......................................... 60
3.3.6. Surface Interval After a Freedive .................................................61
3.4. AUDIBLE AND VISUAL ALARMS .................................................... 62
4. SETTING MODE [SET] .............................................................................. 65
4.1. SETTING TIME, DATE AND DUAL TIME [TIME ] .......................... 65
4.2. DAILY ALARM SETTING [ALM] ......................................................67
4.3. DIVE MODE SETTINGS [DIVE] ........................................................69
4.3.1. Set Air Mode ................................................................................69
4.3.2. Set EAN Mode ............................................................................. 71
4.3.3. Set Free Mode ..............................................................................72
4.4. DIVE ALARM SETTINGS [DIVE AL] ............................................ 73
4.5. ALTITUDE, PERSONAL AND UNIT ADJUSTMENT SETTINGS ..
[AdJ] .....................................................................................................75
5. MEMORIES AND DATA TRANSFER [MEM] .......................................... 77
5.1. LOGBOOK AND DIVE PROFILE MEMORY [LOG] ........................ 78
5.2. DIVE HISTORY MEMORY [HIS]........................................................ 83
5.3. DATA TRANSFER AND PC-INTERFACE [TR-PC] ........................... 84
6. CARE AND MAINTENANCE ....................................................................87
6.1. CARE OF YOUR MOSQUITO .............................................................87
6.2. MAINTENANCE .................................................................................. 88
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6.3. WATER RESISTANCE INSPECTION ................................................. 89
6.4. BATTERY REPLACEMENT ................................................................ 90
7. TECHNICAL DESCRIPTION ..................................................................... 93
7.1. OPERATING PRINCIPLES .................................................................. 93
7.2. REDUCED GRADIENT BUBBLE MODEL, SUUNTO RGBM ........ 96
7.3. OXYGEN EXPOSURE ......................................................................... 98
7.4. TECHNICAL SPECIFICATION ......................................................... 100
8. WARRANTY .............................................................................................. 105
9. GLOSSARY ................................................................................................ 107
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1. INTRODUCTION
Congratulations on your purchase of the SUUNTO MOSQUITO advanced wristop
dive computer. The Mosquito builds on the Suunto tradition of delivering feature-
rich dive computers, providing different operating modes for different types of
diving. Push button controls access a wide selection of choices. The display is
optimized for the dive mode chosen and it incorporates a patented user defi nable
display fi eld. This dive computer is a compact and sophisticated multipurpose dive
instrument, designed to give you years of trouble-free usage.
CHOICE OF DIVING AND WATCH MODES
User options for the Mosquito are selected using the push buttons.
Pre dive confi guration and setup options include:
• Choice of operating mode – Air / Nitrox / Freediving
• Maximum depth alarm
• Dive time alarm
• Oxygen fraction % (Nitrox mode only)
• Oxygen partial pressure alarm limit (Nitrox mode only)
• Altitude adjustment
• Personal adjustment
• Choice of unit – Metric / Imperial
• Clock, calendar, daily alarm, stopwatch, dual time
• User defi nable display fi elds
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CONTINUOUS DECOMPRESSION WITH SUUNTO RGBM
The Suunto Reduced Gradient Bubble Model (RGBM) utilized in the Mosquito
predicts both dissolved and free gas in blood and tissues of divers. It is a signifi cant
advance on the classic Haldane models, which do not predict free gas. The
advantage of Suunto RGBM is additional safety through its ability to adapt to a
variety of situations and dive profi les.
In order to optimize how to respond to different added risk situations an additional
category of stop, referred to as a Mandatory Safety Stop, has been introduced. Also
a countdown for the Recommended Safety Stop is included. The combination of
stop types will depend on the specifi c dive situation.
To get the most from the safety benefi ts be sure to read the summary of the Suunto
Reduced Gradient Bubble Model in chapter 7.2.
1.1. SAFETY PRECAUTIONS
Do not attempt to use Mosquito without reading this instruction manual in its
entirety, including all the warnings. Make sure that you fully understand the use,
displays and limitations of the instrument. If you have any questions about the
manual or the dive computer, contact your SUUNTO dealer before diving with
the dive computer.
Always remember that you are responsible for your own safety.
When used properly, the dive computer is an outstanding tool for assisting properly
trained, certifi ed divers in planning and executing sport dives. It is not a substitute for
certifi ed scuba instruction, including training in the principles of decompression.
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Diving with enriched air mixtures (nitrox) exposes the user to risks different from
those associated with diving with standard air. These risks are not obvious and
require training to understand and avoid. Risks include possible serious injury
or death.
Do not attempt to dive with any gas mix other than standard air without fi rst
receiving certifi ed training in this specialty.
1.1.1. EMERGENCY ASCENTS
In the unlikely event that Mosquito malfunctions during a dive, follow the
emergency procedures provided by your certifi ed 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. DIVE COMPUTER LIMITATIONS
While the dive computer is based on current decompression research and
technology, you must realize that the computer cannot monitor the actual
physiological functions of an individual diver. All decompression schedules
currently known to the authors, including the U.S. Navy Tables, are based on
theoretical mathematical models, which are intended to serve as a guide to reduce
the probability of decompression illness.
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1.1.3. NITROX
Diving with nitrox provides the diver with an opportunity to reduce the risk of
decompression illness by reducing the nitrogen content in the breathing gas mix.
However, when the gas mix is altered, the oxygen content of the mix is generally
increased. This increase exposes the diver to an oxygen toxicity risk not usually
considered in recreational diving. In order to manage this risk, the dive computer
tracks the time and intensity of the oxygen exposure and provides the diver with
information to adjust the dive plan in order to maintain oxygen exposure within
reasonably safe limits.
In addition to the physiological effects of enriched air on the body there are
operational considerations to be addressed when handling altered breathing mixes.
Elevated concentrations of oxygen present a fi re or explosion hazard. Consult with
the manufacturer of your equipment about its compatibility with nitrox.
1.1.4. FREEDIVING
Freediving, and particularly freediving in combination with scuba diving, may
have risks that have not been researched and are not commonly known.
Any person who engages in any form of breathhold diving is in danger of shallow-
water blackout (SWB) i.e. the sudden loss of consciousness caused by oxygen
starvation.
Any breathhold diving results in some nitrogen build-up in the blood and other
fast tissues. Due to the short time spent at depth this build-up is generally not
signifi cant. Therefore, provided the effort involved in freediving has not been
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severe, there is little risk in diving after breathhold diving. However, the converse
is more unknown and may increase signifi cantly the risk of DCI. Therefore,
FREEDIVING AFTER SCUBA DIVING IS NOT RECOMMENDED. You
should avoid freediving and not exceed fi ve meters [16 ft] for at least two hours
after scuba diving.
Suunto also recommends you to be trained in freediving technique and physiology
before conducting breathhold dives. No dive computer can replace the need for
proper dive training. Insuffi cient or improper training may cause a diver to commit
errors that may lead to serious injury or death.
Fig. 2.1. The push buttons of the Mosquito.
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2. GETTING ACQUAINTED
2.1. FUNCTIONS
The MOSQUITO advanced wristop computer is a multipurpose dive instrument
and a sport watch featuring several watch and dive computer modes. You can
select the dive computer model between the Regular Air Dive Computer (AIR),
Enriched Air Nitrox Dive Computer (EAN) and Freediving computer mode
(FREE). The AIR/EAN/FREE modes can also be disabled (set to OFF) and the
instrument can be used as a sports watch on land or in water.
2.2. PUSH BUTTONS
The Mosquito is controlled with four push buttons as follows (see Fig. 2.1.).
M (MODE)
• To change from a main mode to an other main mode press the mode button.
• To exit from a submode to a main mode press the mode button.
• To activate the electroluminescent backlight hold down the mode button for
more than two seconds or one second in the diving mode.
• To accept the settings in the Setting Mode press the mode button.
S (SELECT)
• To select a submode press the select button.
• To select the active segment in the Setting Mode press the select button.
• To select the display in the Logbook Mode press the select button.
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2.3. WATER CONTACTS
The Mosquito is automatically activated when
submerged in water. This function is made possible by
the use of water contacts. The water contacts consist
of the PC-interface poles and the four push-buttons
of the Mosquito (Fig. 2.2). When the PC-interface
poles and one of the push-buttons are connected by
the conductivity of the water the Surface or Diving
Mode is automatically activated.
Contamination or dirt on the PC-interface poles may
prevent this automatic operation. It is, therefore,
important that the poles are kept clean. The poles
can be cleaned with fresh water and a soft brush (e.g.
tooth brush).
NOTE: Water or moisture build-up around the
wa ter contacts may cause the contact to activate auto-
matically. This can happen, e.g., when washing your
hands or sweating. If the water contact activates in
the Time Mode, an AC text will appear on display
(Fig. 2.3.), and it will be shown until the water con tact
deactivates, or the Mosquito enters the Dive Mode
automatically. To save the battery power, you should
deactivate the water contact by cleaning it and/or dry-
ing it with a soft towel.
Fig. 2.3. Active water contact is
indicated by the text AC.
Fig. 2.2. The water contact and
depth sensor.
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2.4. TIME MODE [TIME]
The Mosquito has dual time, calendar clock, stopwatch
and alarm clock functions. The calendar clock and the
stopwatch are operated in the Time Mode. The mode is
indicated by the TIME text and the mode indicator in the
display (Fig. 2.4.). The time, dual time, date and the daily
alarm are set in the Setting Mode (see chapter 4).
2.4.1. TIMEKEEPING DISPLAY
The timekeeping display is the primary display of the
Mosquito (Fig. 2.5.). When the Time Mode is entered
from other modes, the timekeeping display activates
within two seconds, if no button is operated.
In other modes (except in the Diving or Stopwatch
Modes), if no button is operated within 5 minutes,
the Mosquito beeps and returns to the timekeeping
display automatically.
Either the date (a), the seconds of the current time
(b) or dual time (c) are shown on the bottom line
of the timekeeping display. Press the + or - button
to select the desired display option. Next time when
you enter the timekeeping display, the Mosquito will
show the selected option. The TIMER text blinks on
the display if the stopwatch is running.
Fig. 2.4. The Time Mode is
indicated by the TIME text and
a mode indicator.
Fig. 2.5. The time keeping display
a) the date is displayed
b) the seconds are displayed
c) the dual time is displayed.
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The display is illuminated by holding down the M
button for more than two seconds.
To set the time and date, refer to chapter 4.1 ”Setting
Time, Date and Dual Time”.
When diving, the dive entry time and date is registered
in the Logbook Memory. Remember always to check
before diving that the time and date are correctly set,
especially when traveling to different time zones.
2.4.2. STOPWATCH [TIMER]
The Stopwatch function is entered by pressing the
S button, when the time keeping display is shown.
The text TIMEr at the bottom and the mode indicator
(TIME) on the left side of the display indicate that
you have entered the Stopwatch function (Fig. 2.6.).
The stopwatch of the Mosquito lets you measure
elapsed time, split times and the times of two runners.
The range of the stopwatch is 9 hours, 59 minutes,
59.9 seconds (Fig. 2.7.). When the range is exceeded
the computer watch gives a beep and returns to the
time keeping display automatically.
Fig. 2.7. The Stopwatch displays
hours, minutes and seconds.
Fig. 2.6. The Stopwatch function
is indicated by the TIMEr text
and a mode indicator.
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Use the + and - buttons to operate the elapsed time measurement, split time
measurement or the times of two runners as follows:
Diving with the Mosquito or performing data transfer will stop the stopwatch.
However, it is possible to use stopwatch function when diving, if the AIR/EAN/
FREE -diving modes are disabled (set to OFF, see chapter 3.2.).
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3. DIVING WITH THE MOSQUITO
In order to familiarize yourself with the menu based
functions, Suunto recommends you use your Quick
Reference Guide supplied with the Mosquito together
with the information in the following chapters.
This section contains instructions on how to operate
the dive computer and interpret its displays. You will
fi nd that this dive computer is easy to use and read.
Each display shows only the data relevant to that
specifi c diving situation.
Chapter 3.1. Before Diving contains general
instructions for all the dive computer modes. Chapter
3.2. Scuba Diving information for air and enriched
air nitrox scuba diving and Chapter 3.3. Free Mode
information for freediving.
Fig. 3.1. Chosen Dive Mode.
Fig. 3.2. Startup I. All segments
shown.
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3.1 BEFORE DIVING
3.1.1. ACTIVATION AND PRE-CHECKS
The instrument can be activated by pressing the M
button or it will automatically activate the air diving,
nitrox diving or freediving computer mode according
to the user selection, if submerged deeper than
0.6 m (2 ft).
The chosen Dive Mode is indicated by the AIR, EAN
or FREE texts and mode indicator on the right side
of the display (Fig. 3.1.). Next, all display elements
will turn on showing mostly fi gure 8’s and graphical
elements (Fig. 3.2.). A few seconds later the battery
power indicator is shown and the backlight and the
buzzer are activated (Fig. 3.3a.). Next, the screen
will display the mode dependent Ready display con-
fi rming that the activation is complete (Fig. 3.4.).
At this time, perform your pre-check making sure that:
• the Mosquito operates and provides a
complete display
• the low battery indicator is not on
• the instrument displays correct units
Fig. 3.3. Startup II. Battery power indicator.
a)
b)
c)
d)
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Fig. 3.5. Startup IV. Free mode. Depth and dive time are zero.
Pressing +/- button activates alternative display of maximum
depth and current time or dive number.
Fig. 3.4. Startup III. Surface
mode (Air). Depth and dive
time are zero. Pressing +/-
button activates alternative
display of maximum depth and
current time.
• the instrument displays correct temperature
and depth (0.0 m [0 ft])
• the buzzer beeps
• you have preset desired displays on the User
Defi nable Display Field
• the altitude and personal adjustment settings
are correct (Air and EAN modes)
And if set to EAN mode, make sure that:
• the oxygen percentage is adjusted according
to the measured Nitrox blend in your
cylinder
• the oxygen partial pressure limit is set
correctly.
The Mosquito is now ready for diving.
NOTE: The surface interval time does not run before
the fi rst dive.
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After activation of the Dive Mode or after diving, the Mosquito will automatically
switch to show the time keeping display within 5 minutes to conserve the battery
power, if you do not press any buttons. However, the dive computer functions will
remain active until it has calculated that all residual nitrogen has off-gassed. This
may take up to 100 hours, as described in chapter 7.1. ”Operating Principles”.
However, SUUNTO recommends to turn on the Dive Mode before diving to check
the settings, battery warning, etc. and for dive planning.
3.1.2. BATTERY POWER INDICATOR AND LOW BATTERY
WARNING
This dive computer has a unique graphic Battery Power Indicator designed to give
you an advance notice of impending need to change the battery.
The Battery Power Indicator can always be seen as the Dive Mode is activated. The
electroluminescent backlight will be on during the battery check. The following
Table and Figure show the various warning levels.
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TABLE 3.1. BATTERY POWER INDICATOR
Temperature or an internal oxidation of the battery affects the battery voltage. If
the instrument is stored for a long period, the low battery warning may be displayed
even though the battery has enough capacity. The low battery warning may also
be displayed at low temperatures, even though the battery has enough capacity in
warmer conditions. In these cases repeat the battery check procedure.
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After the battery check the Low Battery Warning is
indicated by the battery symbol (Fig. 3.6.).
If the battery symbol is displayed in the Surface mode
or if the display is faded or weak, the battery may
be too low to operate the dive computer and battery
replacement is recommended.
NOTE: For safety reasons the backlight cannot be
activated when the low battery warning is indicated
by the battery symbol.
3.1.3. USER DEFINABLE FUNCTIONS
AND ALARMS
This Mosquito has several User Defi nable Functions
and depth and time related alarms that you can set
according to your personal preference. For example
the Mosquito has a patented presetting system for the
User Defi nable Display Field in the lower part of the
display.
Fig. 3.6. Low Battery Warning.
Battery symbol indicates that
the battery is low and battery
replacement is recommended.
Fig. 3.7. Bookmark activation.
An annotation, Bookmark, is
placed in the profi le memory
during a dive by pressing the
S button (Displayed with Diver
Attention symbol.).
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The displays can be preset in the Surface Mode. If it is not active, enter it by
selecting the Dive Mode. The preset display will remain active until another
display is selected. The preset displays will be the default displays in the
Diving Mode. The other available display can be accessed by pressing the + or
- button. After fi ve seconds the display changes back to the default preset display
automatically.
3.1.3.1. PRESETTING TIME ALARM
The alarm clock is set in the Setting Mode, ALM. For further information see
chapter 4.2.
3.1.3.2. PRESETTING DIVE ALARMS
The dive alarms (dive time alarm and maximum depth alarm) are set in the Setting
Mode, DIVE AL. For further information see chapter 4.5.
3.1.4. BOOKMARK FUNCTION
It is possible to make special marks in the profi le memory during a dive. These
Bookmarks will be shown as a Diver Attention Symbol when scrolling the profi le
memory on the computer display (Fig. 3.7). The Bookmarks will also be shown as
annotations in the PC-software, Suunto Dive Manager. To make a bookmark on
the profi le memory during a dive press the S button. The Diver Attention Symbol
will be displayed to confi rm the bookmark.
.
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3.2. SCUBA DIVING
3.2.1. DIVING WITH AIR
3.2.1.1. DIVE PLANNING [PLAN]
It is possible at any time in the Air/EAN Surface Mode to enter the Planning
Mode, simply by pressing the S button. After showing the text PLAN and the
mode indicator (Fig. 3.8.), the display will show the no-decompression limit for
the depth of 9 m [30 ft]. By pressing the + button, the Mosquito will calculate and
show the next deeper no-decompression limits in 3 m [10 ft] increments ending
at 45 m [150 ft] or at the maximum allowed depth in the EAN mode. By pressing
the button the next shallower depth will be shown again-.
The Planning Mode can be canceled by pressing the or the M S button.
NOTE: The Planning mode is disabled in the Air/EAN Error mode (see chapter
3.2.5.).
Higher Altitude and conservative Personal Adjustment Modes will shorten the
no-decompression time limits. These limits at different Altitude and Personal
Adjustment Mode selections are shown in Table 7.1. and 7.2.
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The Planning mode also accounts for the following
information from previous dives:
• any calculated residual nitrogen
• all dive history for the past four days
• oxygen exposure (EAN mode)
The no-decompression times given for different
depths will therefore be shorter than before your fi rst
“fresh” dive.
DIVE NUMBERING SHOWN DURING
DIVE PLANNING
Dives belong to the same repetitive dive series if the
instrument was still counting down the no-fl y time at
the beginning of the dive.
The surface interval must be at least 5 minutes for a
dive to be considered a repetitive dive. Otherwise, it
is considered a continuation of the same dive. The
dive number will not change and the dive time will
continue where it left off (see chapter 3.2.3.3.).
Fig. 3.8. Dive Planning. The
Planning mode is indicated
by the PLAN text and mode
indicators.
Fig. 3.9. Planning. The no-
decompression time limit at
30.0 m [100 ft] is 18 minutes in
P0/A0 mode..
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3.2.1.2. PRESETTING THE DISPLAYS IN
THE AIR MODE
Preset with the - button in the lower left corner of the
display (Fig. 3.4.):
• the maximum depth or
• the temperature.
Preset with the + button in the lower right corner of
the display (Fig. 3.4.):
• the dive time or
• the current time.
3.2.1.3. BASIC DIVE DATA
The dive computer will remain in the Surface mode
at depths less than 1.2 m [4 feet]. At depths greater
than 1.2 m the instrument will go into the Diving
mode (Fig. 3.10.).
Fig. 3.11. Diving display. Present depth
is 19.3 m [63 ft] and no-decompression
stop time limit is 23 minutes in A0/P1
mode. Maximum depth during this dive
has been 19.8 m [65 ft], elapsed dive time
is 16 minutes. Alternative display shows
temperature and current time.
Fig. 3.10. Dive has just begun.
Available no-decompression
time is more than 199 min.
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During a no-decompression stop dive, the following information will be displayed
(Fig. 3.11.):
• your present depth in meters [ft]
• the Altitude Adjustment setting on the right side of the center window
with a wave and mountain symbols (A0, A1, or A2) (see Table 3.3.)
• the Personal Adjustment setting on the right side of the center window
with a diver symbol and + signs (P0, P1, or P2) (see Table 3.4.)
• the available no-decompression time in minutes in the center window as
NO DEC TIME. It is calculated based on the fi ve factors described in
chapter 7.1. ”Operating Principles”.
• the maximum depth during this dive in meters [ft], indicated as MAX or
the temperature in °C [°F] in the lower left corner.
• the elapsed dive time in minutes, indicated as DIVE TIME or the current
time, indicated as TIME in the lower right corner.
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3.2.1.4.1. RECOMMENDED SAFETY STOP
With every dive over 10 meters the instrument has a three minute countdown for
the recommended safety stop, to be taken in the 3 - 6 meter [10 ft - 20 ft] range.
This is shown with the STOP sign and a three-minute countdown in the center
window instead of the no-decompression time (Fig. 3.12.).
The Recommended Safety Stop, as the name implies, is recommended. If it is
ignored, there is no penalty applied to the following surface intervals and dives.
3.2.1.4.2. MANDATORY SAFETY STOP
When the ascent rate exceeds 12 meters/min [40 ft] momentarily or 10 meters/min
[33ft] continuously the micro-bubble build-up is predicted to be more than allowed
for in the decompression model. The Suunto RGBM calculation model responds
to this by adding a Mandatory Safety Stop to the dive. The time of this Mandatory
Safety Stop will depend on the severity of the ascent rate excess.
The STOP sign will appear in the display and when you reach the depth zone
between 6 m to 3 m [20 ft to 10] also the CEILING label, ceiling depth and
the calculated Safety Stop time appear in the display. You should wait until the
Mandatory Safety Stop warning disappears (Fig. 3.13.).
The Mandatory Safety Stop time always includes the three minute Recommended
Safety Stop time. The total length of the Mandatory Safety Stop time depends on
the seriousness of the ascent rate violation.
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3.2.1.5. ASCENT RATE INDICATOR
The ascent rate is shown graphically along the left side of the display as follows:
TABLE 3.2. ASCENT RATE INDICATOR
When the maximum allowed ascent rate is exceeded, the SLOW warning and the
STOP sign appear, indicating that the maximum ascent rate has been exceeded
continuously or that the current ascent rate is signifi cantly above the allowed
rate.
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38
Whenever the SLOW warning segment and the STOP
sign appear (Fig. 3.15.), you should immediately slow
down your ascent. When you reach the depth zone
between 6 m to 3 m [20 ft to 10 ft] the STOP and
CEILING depth labels will advise you to make a
Mandatory Safety Stop. Wait until the warning
disappears (Fig. 3.13.). You should not ascend
shallower than 3 m [10 ft] with the Mandatory Safety
Stop warning on.
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 after you have exceeded the
maximum recommended ascent rate. If this
Mandatory Safety Stop is not completed the
decompression model will penalize your next
dive(s).
Fig. 3.15 Ascent Rate Indicator.
Blinking SLOW and four
segments are shown together
with an audible alarm: ascent
rate is more than 10 m/min
[33 ft/min]. This is a caution
to slow down! STOP sign
means that you are advised to
make a Mandatory Safety Stop
when you reach a depth of 6
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3.2.1.6. DECOMPRESSION DIVES
When your NO DEC TIME becomes zero, your dive becomes a decompression
stop dive, i.e. you must perform one or several decompression stops on your way
to the surface. The NO DEC TIME on your display will be replaced by a CEILING
and blinking ASC TIME notation and an upward pointing arrow (Fig. 3.17.).
If you exceed the no-decompression limits on a dive, the dive computer will
provide 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 fi xed depths, the dive computer gives
you the option to decompress with a more gradual and natural series of mini steps
within the decompression range (continuous decompression).
Fig. 3.16. Ceiling, ceiling zone,
fl oor and decompression range.
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40
The ascent time (ASC TIME) is the minimum amount of time needed to reach the
surface in a decompression dive. It includes:
• time needed to ascend to the ceiling at an ascent rate of 10 m/min [33
ft/min] plus
• time needed at the ceiling. The ceiling is the shallowest depth where
decompression could be made plus
• time needed at the Mandatory Safety Stop (if any) plus
• 3 minute Recommended Safety Stop plus
• time needed to reach the surface after the ceiling and safety stops have
been completed.
WARNING
Your ascent time may increase if you:
- ascend slower than 10 m/min [33 ft/min] or
- make your decompression stop deeper than at the ceiling.
These factors will also increase the amount of air required to reach the surface.
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CEILING, CEILING ZONE, FLOOR AND DECOMPRESSION RANGE
When in decompression, it is important that you understand the meaning of
ceiling, fl oor, and decompression range (Fig. 3.16.):
• The ceiling is the shallowest depth where decompression could be made.
At this depth, or below, you must perform all stops.
• The ceiling zone is the optimum decompression stop zone. It is the zone
between the minimum ceiling and 1.8 m [6 ft] below the minimum
ceiling.
• The fl oor is the deepest depth at which the decompression stop time will
not increase. Decompression will start when you pass this depth during
your ascent.
• The decompression range is the depth range between the ceiling and
fl oor. Within this range, decompression takes place. However, it is
important to remember that the decompression will be very slow at, or
close to, the fl oor.
The depth of the ceiling and fl oor will depend on your dive profi le. The ceiling
depth will be fairly shallow when you enter the decompression mode, but if you
remain at depth, it will move downward and the ascent time will increase. Likewise,
the fl oor and ceiling may change upwards while you are decompressing.
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When conditions are rough, it may be diffi cult to
maintain a constant depth near the surface. In this
case it will be more manageable to maintain an
additional distance below the ceiling, to make sure
that the waves do not lift you above the ceiling.
Suunto recommends that decompression takes place
deeper than 4 m [13 ft], even if the indicated ceiling
is shallower.
NOTE: It will take more time and more gas to
decompress below the ceiling than at the ceiling.
WARNING
Never ascend above the ceiling! You must
not ascend above the ceiling during your
decompression. In order to avoid doing so by
accident, you should stay somewhat below the
ceiling.
Fig. 3.17. Decompression dive,
below fl oor. Upward pointing
arrow, blinking ASC TIME
label and an audible alarm tell
you to ascend. Minimum total
ascent time including safety
stop is 7 minutes. Ceiling is at
3 m [10 ft].
Fig. 3.18. Decompression dive, above fl oor.
Upward pointing arrow has disappeared and
ASC TIME label has stopped blinking, which
means that you are in the decompression range.
44
Fig. 3.20. Decompression dive,
above ceiling. Note downward
pointing arrow, Er warning and
an audible alarm. You should
immediately (within 3 minutes)
descend to or below ceiling.
only after the ASC TIME and CEILING labels have
disappeared, which means that the
decompression stop
and any Mandatory Safety Stop has been completed.
You are advised, however, to stay until the STOP sign
has also gone. This indicates that the three minute
Recommended Safety Stop has also been completed.
DISPLAY ABOVE THE CEILING
If you ascend above the ceiling during a decompression
stop, a downward pointing arrow will appear and a
continuous beeping starts (Fig. 3.20.). 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 goes 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 chapter 3.2.5.).
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3.2.2. DIVING WITH EAN (NITROX)
3.2.2.1. BEFORE DIVING
This dive computer can be set for diving with standard air only (Air mode) or it
can be set for diving with Enriched Air Nitrox (EAN mode).
If set to the EAN 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
calculation models according to the entered O
2% value (Fig. 3.21.). Calculations
based on Nitrox result in longer no-decompression times and shallower maximum
depths.
The EAN mode is set using the SET DIVE function (See Chapter 4.3 Dive Mode
Settings)
DEFAULT NITROX SETTINGS
In the EAN mode, the default setting is for standard air (21% O
2). It remains in this
setting until the O2% is adjusted to any other percentage of oxygen (22% - 50%).
If a dive is started within 2 hours Mosquito retains this value until the dive series
is fi nished. If unused, the computer will retain the manually entered value for the
selected oxygen percentage for about two hours, after which it will revert to the
default setting of 21% O2.
The default setting for maximum oxygen partial pressure is 1.4 bar, however you
are able to set it in the range of 1.2 - 1.6 bar.
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Fig. 3.21. Nitrox display.
Maximum depth based on set
O2% (21%) and PO2 (1.4 bar)
is 54.1 m [177 ft].
Fig. 3.22. Diving in EAN mode.
The O2% is set to 32%. PO2 is
0.9. Alternative displays are
maximum depth, temperature,
dive time and time.
3.2.2.2. PRESETTING THE DISPLAYS IN
THE EAN MODE
When entering the EAN mode the oxygen percentage
and partial pressure are always the default displays in
the lower part of the display.
Preset with the - button in the lower left corner of the
display (Fig. 3.22.):
• oxygen percentage (default)
• the maximum depth or
• the temperature.
Preset with the + button in the lower right corner of
the display (Fig. 3.22.):
• current oxygen partial pressure
• the dive time or
• the current time.
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Fig. 3.23. Oxygen partial
pressure and OLF displays.
There is an audible alarm and
the last segment of the bar graph
starts to blink as oxygen partial
pressure is greater than 1.4 bar
or set value, and/or the OLF has
reached 80% limit. When OLF
has reached 100%, all segments
starts to blink. If the OTU value
is higher than the CNS value, the
lowest segment blinks.
3.2.2.3. OXYGEN DISPLAYS
If set to EAN mode the NITROX display, with all
labeled oxygen information, is shown immediately after
activation. The nitrox display shows (Fig. 3.21.):
• oxygen percentage, labeled with O
2%, is
shown in the left side of the lower display
• set oxygen partial pressure limit, labeled
with PO2, is shown in the right side of the
lower display
• maximum allowed depth based on the set
oxygen percentage and partial pressure limit
• current oxygen toxicity exposure shown
with an Oxygen Limit Fraction (OLF) bar
graph along the right side of the display.
In the Dive mode the current oxygen toxicity exposure
is always shown with an Oxygen Limit Fraction
(OLF) bar graph and the oxygen percentage labeled
with O2%. The current oxygen partial pressure labeled
with PO2is also shown, if selected (Fig. 3.22.). During
a dive, the oxygen partial pressure, labeled with PO
2,
is always shown instead of the preselected display, if
the partial pressure is greater than 1.4 bar or the set
value (Fig. 3.23.).
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3.2.2.4. OXYGEN LIMIT FRACTION (OLF)
In addition to tracking the diver’s exposure to nitrogen, the instrument tracks the
exposure to oxygen. These calculations are treated as entirely separate functions.
The dive computer calculates separately for Central Nervous System oxygen
toxicity (CNS) and Pulmonary Oxygen toxicity, the latter measured by the addition
of Oxygen Toxicity Units (OTU). Both fractions are scaled so that the maximum
tolerated exposure for each is expressed as 100%.
The Oxygen Limit Fraction (OLF) bar graph has 7 segments, each representing
12,5% (from 1 to 50%) or 15% (from 50% to 80%). The OLF bar graph displays
only the value of the higher of the two calculations. When the OTU value meets
and exceeds the CNS value then in addition to displaying its percentage the lowest
segment blinks to indicate that the value shown relates to OTU. The oxygen
toxicity calculations are based on the factors listed in chapter 7.3. “Oxygen
Exposure”.
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3.2.3. AT THE SURFACE
3.2.3.1. SURFACE INTERVAL AFTER AN AIR/EAN DIVE
An ascent to any depth shallower than 1.2 m [4 ft] will cause the DIVING display
to be replaced by the alternating SURFACE displays, giving the following
information (Fig. 3.24. and 3.25.):
• maximum depth of most recent dive in meters [ft]
• present depth in meters [ft]
• the surface time in hours and minutes (separated by a colon), telling the
duration of the present surface interval
• the desaturation/no-fl ying time in hours and minutes is shown next to
the airplane in the center window of the display
• no-fl ying warning indicated by an airplane icon
• Altitude Adjustment setting
• Personal Adjustment setting
• Diver Attention symbol indicates if you should prolong your surface
interval time
• STOP label for 5 min, if the Mandatory Safety Stop was violated
• ASC TIME, if the decompression ceiling was violated (= Error Mode)
(Fig. 3.26.)
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50
Fig. 3.24. Surface display.
You have surfaced from a 18
minute dive, which maximum
depth was 20.0 m [66 ft]. The
present depth is 0.0 m [0 ft]
and surface interval time is 0.
Airplane symbol indicates that
you should not fl y and diver
attention symbol indicates that
you should prolong your surface
interval time because of excess
micro-bubbles.
Fig. 3.25. Surface display.
Alternating display showing
the no-fl ying time.
Or in the lower display according the selection and
mode:
• dive time of most recent dive in minutes
labeled with DIVE TIME.
• the current time labeled with TIME
• oxygen partial pressure labeled with PO
2 (if
set to EAN mode)
• maximum depth labeled with MAX
• the current temperature with °C for
Centigrade [or °F for Fahrenheit]
• oxygen percentage setting labeled with O
2%
(if set to EAN mode)
If set to EAN mode, the current oxygen toxicity
exposure is shown with an Oxygen Limit Fraction
(OLF) bar graph along the right side of the display.
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Fig. 3.26. Surface Mode after
a violated decompression dive.
ASC TIME symbol indicates
that you have violated the ceiling
for more than three minutes. The
alternating display shows you
that you must not dive again for
at least 48 hours.
3.2.3.2. DIVER ATTENTION SYMBOL
The Diver Attention Symbol is an advice to extend
surface interval. Some patterns of diving, in particular
multiday diving with many dives and short surface
intervals, cumulatively add a higher risk of DCI.
When this is detected in addition to adapting the
decompression algorithm, the Diver Attention
Symbol is shown.
3.2.3.3. DIVE NUMBERING
Several repetitive dives are considered to belong to the
same repetitive dive series when the dive computer
has not counted the no-fl ying time to zero. Within
each series, the dives are given individual numbers.
The fi rst dive of the series will be numbered as DIVE
1, the second as DIVE 2, the third as DIVE 3, etc.
If you start a new dive with less than 5 minutes of
surface interval time, the dive computer interprets this
as a continuation of the previous dive and the dives
are considered to be the same. The diving display will
return, the dive number will remain unchanged, and
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the dive time will begin where it left off. After 5 minutes on the surface, subsequent
dives are, by defi nition, repetitive. The dive counter displayed in the Planning
Mode will increment to the next higher number if another dive is made.
3.2.3.4. FLYING AFTER DIVING
The no-fl ying time is shown in the center window next to the airplane image.
Flying or travelling to a higher altitude should be avoided at any time the computer
counts down the no-fl ying time.
The no-fl ying time is always at least 12 hours or equivalent to the so-called
desaturation time (if longer than 12 hours).
In the permanent Error mode the no-fl ying time is 48 hours.
Divers Alert Network (DAN) recommends the following on no-fl ying times:
• A minimum surface interval of 12 hours would be required in order to
be reasonably assured a diver will remain symptom free upon ascent to
altitude in a commercial jetliner (altitude up to 2400 m [8000 ft]).
• Divers who plan to make daily, multiple dives for several days, or make
dives that require decompression stops, should take special precautions
and wait for an extended interval beyond 12 hours before fl ight. Further,
the Undersea and Hyperbaric Medical Society (UHMS) suggests divers
using standard air tanks and exhibiting no symptoms of decompression
illness wait 24 hours after their last dive to fl y in an aircraft with cabin
pressure up to 2400 m [8000 ft]. The only two exceptions to this
recommendation are:
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TABLE 3.3. ALTITUDE ADJUSTMENT RANGES
The entered Altitude Adjustment Mode is indicated by mountain symbols (A0,
A1 = one mountain, or A2 = two mountains). Also, the maximum altitudes are
displayed for each Altitude group (see Table 3.3.). Chapter 4.6. describes how the
Altitude Mode is adjusted.
Traveling to a higher elevation can temporarily cause a change in the equilibrium
of dissolved nitrogen in the body. It is recommended that you acclimate to the new
altitude by waiting at least three hours before making a dive.
67
Produkt Specifikationer
| Mærke: | Suunto |
| Kategori: | Dykkercomputer |
| Model: | MOSQUITO |
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