EN
SUUNTO
VYTEC DS
INSTRUCTION MANUAL
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DEFINITION OF WARNINGS, CAUTIONS AND NOTES
Throughout this manual, special references are made when deemed
important. Three classifications are used to separate these references
by their order of importance.
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, VYTEC, Consumed Bottom Time (CBT), Oxygen Limit Fraction
(OLF), SUUNTO Reduced Gradient Bubble Model (RGBM), Continuous
Decompression and their logos are all registered or unregistered trade-
marks of SUUNTO. All rights are reserved.
CE
The CE mark is used to mark conformity with the European Union EMC
directive 89/336/EEC and Personal Protective Equipment directive
89/686/EEC. The SUUNTO dive instruments fulfill all the required EU
directives.
FIOH, Laajaniityntie 1, FIN-01620 Vantaa, Finland, notified body no.0430,
has EC type-examined this type of personal protective equipment.
EN 250 Respiratory equipment - Open circuit self-contained compressed
air diving apparatus – Requirements, testing, marking.
The cylinder pressure gauge and the parts of this product used in meas-
uring the cylinder pressure meet the requirements set in the section of
the European Standard EN 250 that concern cylinder pressure meas-
urements. The instruments must be serviced by an authorized dealer
every second year or after 200 dives (whichever comes first).
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PrEN 13319
PrEN 13319 ”Diving accessories – Depth gauges and combined depth
and time measuring devices – Functional and safety requirements, test
methods” is a European diving depth gauge standard draft. The VYTEC
is designed to comply with this draft standard.
ISO 9001
SUUNTO Oy’s Quality Assurance System is certified by Det Norske
Veritas to be according to the ISO 9001 in all SUUNTO Oy’s operations
(Quality Certificate 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 VYTEC is subject to change
without notice.
WARNING!
READ THIS MANUAL! Carefully read this instruction manual in its
entirety paying close attention to all warnings listed below, including
section 1.1. ”Safety Precautions”. 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 intend-
ed for recreational use only. The demands of commercial or profes-
sional 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 commercial or
professional diving activity.
WARNING!
ONLY DIVERS TRAINED IN THE PROPER USE OF SCUBADIVING
EQUIPMENT SHOULD USEADIVE COMPUTER! No dive computer
can replace the need for proper dive training. Insufficient 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 PROFILE EVEN IF YOU FOLLOW THE DIVE PLAN
PRESCRIBED BY DIVE TABLES ORADIVE COMPUTER. NO PRO-
CEDURE, DIVE COMPUTER OR DIVE TABLE WILL PREVENT THE
POSSIBILITY OF DCI OR OXYGEN TOXICITY!An individual’s physi-
ological 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 fitness 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!
WARNING!
DIVES WITH REQUIRED DECOMPRESSION STOPS ARE NOT
RECOMMENDED. YOU SHOULD ASCEND AND BEGIN DECOM-
PRESSION 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 in-
strumentation including a depth gauge, submersible pressure gauge,
timer or watch, and have access to decompression tables whenever
diving with the dive computer.
WARNING!
PERFORM PRECHECKS! Always activate and check the device be-
fore 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 and personal adjust-
ments are correct. Also, exit the Data Transfer (TR-PC) mode before
diving, as the computer does not automatically revert to Dive mode
from Data Transfer mode.
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WARNING!
YOUAREADVISED TOAVOID FLYINGANY TIME THE COMPUTER
COUNTS DOWN THE NO-FLYING TIME. ALWAYS ACTIVATE THE
COMPUTER TO CHECK THE REMAINING NO-FLY TIME PRIOR TO
FLYING! The computer goes into the stand-by display automatically 5
minutes after the dive has ended. The stand-by display shuts off after
two hours. Flying or traveling to a higher altitude within no-fly time can
greatly increase the risk of DCI. Review the recommendations given
by Diver’s Alert Network (DAN) in chapter 3.6.3. “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, it will give inaccurate
information for subsequent dives. No dive computer can take into ac-
count 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.
WARNING!
DO NOT EXPOSE THE VYTEC´S OPTIONAL PRESSURE TRANS-
MITTER 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 WITHACYLINDER OF ENRICHEDAIR 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.
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WARNING!
THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PER-
CENTAGE 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 calcu-
lations. If there is a desire to adjust the computer to provide more
conservative calculations, use the personal adjustment feature to af-
fect decompression calculations or reduce the PO2 setting to affect
oxygen exposure.
WARNING!
SET THE CORRECTALTITUDEADJUSTMENT MODE! When diving
at altitudes greater than 300 m [1000 ft] theAltitudeAdjustment 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 3000 m [10000 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 MODE! When-
ever 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
PersonalAdjustment setting will result in erroneous dive and planning
data.
NOTE!
It is not possible to change between Air, Nitrox and Gauge modes before
the instrument has counted down the no-flying time.
There is one exception to this: You can change from Air to Nitrox mode
even during the no-flying time. When planning both air and nitrox dives
during the same dive series, you should set the instrument in Nitrox mode
and modify the gas mix accordingly.
In Gauge mode, the no-flying time is always 48 hours.
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TABLE OF CONTENTS
WARNINGS! .................................................................................................... 2
1. INTRODUCTION ......................................................................................... 8
1.1. SAFETY PRECAUTIONS ........................................................................ 9
1.1.1. Emergency Ascents ...................................................................... 9
1.1.2. Dive Computer Limitations........................................................... 10
1.1.3. Nitrox............................................................................................ 10
2. GETTING ACQUAINTED.............................................................................. 10
2.1. FUNCTIONS .......................................................................................... 10
2.2. PUSH BUTTONS ....................................................................................11
2.3. WATER CONTACTS .............................................................................. 12
2.4. WIRELESS PRESSURE TRANSMISSION............................................ 13
2.4.1. Installing the transmitter............................................................... 13
2.4.2. Pairing and code selection........................................................... 14
2.4.3. Transmission data........................................................................ 15
3. DIVING WITH THE VYTEC........................................................................... 17
3.1. BEFORE DIVING ................................................................................... 17
3.1.1. Activation and Prechecks............................................................. 17
3.1.2. Battery indication ......................................................................... 18
3.1.2.1. Battery Power Indicator .................................................. 18
3.1.2.2. Wireless transmitter battery indicator ............................. 20
3.1.3. Dive Planning [PLAN] .................................................................. 20
3.1.4. User Definable Functions and Alarms.......................................... 21
3.2. SAFETY STOPS .................................................................................... 21
3.2.1. Recommended Safety Stop......................................................... 21
3.2.2. Mandatory Safety Stop ................................................................ 22
3.2.3. Deep Stops .................................................................................. 23
3.3. DIVING IN AIR MODE............................................................................ 23
3.3.1. Basic Dive Data ........................................................................... 23
3.3.2. Bookmark..................................................................................... 24
3.3.3. Cylinder Pressure Data................................................................ 24
3.3.4. Consumed Bottom Time (CBT).................................................... 25
3.3.5. Ascent Rate Indicator................................................................... 26
3.3.6. Safety Stops and Deep Stops...................................................... 27
3.3.7. Decompression dives................................................................... 27
3.4. DIVING IN NITROX MODE.................................................................... 30
3.4.1. Before Diving ............................................................................... 30
3.4.2. Oxygen Displays.......................................................................... 31
3.4.3. Oxygen Limit Fraction (OLF)........................................................ 33
3.4.4. Gas Change, Multiple Breathing Gas Mixes................................ 33
3.5. DIVING IN GAUGE MODE..................................................................... 34
3.6. AT THE SURFACE ................................................................................. 35
3.6.1. Surface Interval............................................................................ 35
3.6.2. Dive Numbering ........................................................................... 36
3.6.3. Flying After Diving........................................................................ 37
3.7. AUDIBLE AND VISUAL ALARMS .......................................................... 38
3.8. HIGH ALTITUDE DIVES AND PERSONAL ADJUSTMENT................... 40
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3.8.1. Altitude Adjustment ...................................................................... 40
3.8.2. Personal Adjustment.................................................................... 40
3.9. ERROR CONDITIONS........................................................................... 42
4. MENU BASED MODES ................................................................................ 43
4.1. MEMORIES AND DATA TRANSFER [1 MEMORY]............................... 45
4.1.1. Logbook and Dive Profile Memory [1 LOGBOOK]....................... 45
4.1.2. Dive History Memory [2 HISTORY].............................................. 48
4.1.3. Data Transfer and PC-Interface [3 TR-PC] .................................. 49
4.2. SIMULATION MODE [2 SIMUL]............................................................. 50
4.2.1. Dive Simulator [1 SIMDIVE]......................................................... 50
4.2.2. Dive Planning Simulator [2 SIMPLAN]......................................... 51
4.3. SET MODES [3 SET] ............................................................................. 51
4.3.1. Dive Parameter Settings [1 SET DIVE]........................................ 52
4.3.1.1. Altitude Adjustment, Personal Adjustment and RGBM
Settings and Safety Stop / Deep Stop [1AdJ MODE]................... 52
4.3.1.2. Dive Time Alarm Setting [2 d ALARM] ............................ 53
4.3.1.3. Maximum Depth Alarm Setting [3 MAX DPTH]............... 53
4.3.1.4. Nitrox/Oxygen Settings [4 NITROX] ............................... 53
4.3.2. Setting Time [2 SET TIME]........................................................... 54
4.3.2.1. Adjusting Time [1 AdJ TIME]........................................... 54
4.3.2.2. Adjusting Date [2 AdJ DATE] .......................................... 55
4.3.2.3. Adjusting Daily Alarm [3 T ALARM]................................. 55
4.3.3. Setting Preferences [3 SET PREF].............................................. 55
4.3.3.1. Backlight Setting [1 LIGHT] ............................................ 55
4.3.3.2. Dive Computer Units Setting [2 UNITS].......................... 56
4.3.3.3. Wireless Transmission Settings [3 HP]........................... 56
4.3.3.4. Profile Sample Rate Setting [4 REC].............................. 56
4.3.3.5. Dive Computer Model Setting [5 MODEL]
– AIR/NITROX/GAUGE.................................................. 56
5. CARE AND MAINTENANCE......................................................................... 57
5.1. IMPORTANT INFORMATION................................................................. 57
5.2. CARE OF YOUR DIVE COMPUTER..................................................... 57
5.3. MAINTENANCE ..................................................................................... 58
5.4. WATER RESISTANCE INSPECTION.................................................... 58
5.5. BATTERY REPLACEMENT ................................................................... 59
5.5.1. Computer battery ......................................................................... 59
5.5.2. Wireless transmitter battery replacement .................................... 62
6. TECHNICAL DESCRIPTION......................................................................... 64
6.1. OPERATING PRINCIPLES.................................................................... 64
6.2. SUUNTO REDUCED GRADIENT BUBBLE MODEL (RGBM)............... 66
6.3. OXYGEN EXPOSURE........................................................................... 67
6.4. TECHNICAL SPECIFICATION............................................................... 68
7. WARRANTY ............................................................................................... 71
8. SUUNTOSPORTS.COM ............................................................................... 72
8.1. SYSTEM REQUIREMENTS................................................................... 72
8.2. SUUNTOSPORTS.COM SECTIONS..................................................... 73
8.3. GETTING STARTED.............................................................................. 74
9. GLOSSARY .............................................................................................. 75
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1. INTRODUCTION
Congratulations on your purchase of the SUUNTO VYTEC advanced
dive computer. The Vytec builds on the Suunto tradition of delivering
feature-rich dive computers. The Suunto Vytec provides many new and
enhanced features that cannot be found in other dive computers, such
as gas switching and optional wireless air-integration. Push button con-
trols access a wide selection of choices. The display is optimized for the
dive mode chosen. This air-integrated dive computer is a compact and
sophisticated multipurpose dive instrument, designed to give you years
of trouble-free service.
Choice of Operating Modes and Set-up Options
User options for the Vytec are selected using the push buttons.
Pre Dive configuration and setup options include:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Choice of operating mode – Air / Nitrox / Gauge
Wireless Air Integration on/off
Cylinder alarm setting
Choice of unit – Metric / Imperial
Maximum depth alarm
Dive time alarm
Backlight settings
Clock, calendar, daily alarm
Mix Oxygen fraction % (Nitrox mode only)
Maximum PO2 (Nitrox mode only)
Altitude adjustment
Personal adjustment
RGBM adjustment
Sample rate setting 10, 20, 30 or 60 seconds for dive profile
Multiple breathing gases
The Suunto RGBM/ Deep Stop Algorithm
The Suunto Reduced Gradient Bubble Model (RGBM) utilized in the
Vytec predicts both dissolved and free gas in blood and tissues of divers.
It is a significant 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 profiles.
The Suunto Vytec allows the user to choose between a traditional Rec-
ommended Safety Stop and Deep Stops. Deep Stops are decompres-
sion stops that occur deeper than traditional stops, with the purpose of
minimizing microbubble formation.
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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 specific
dive situation.
To get the most from the safety benefits be sure to read the summary
of the Reduced.
1.1. SAFETY PRECAUTIONS
Do not attempt to use the dive computer 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, certified divers in planning and executing sport dives.
It is NOT A SUBSTITUTE FOR CERTIFIED SCUBA INSTRUCTION,
including training in the principles of decompression.
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 in-
clude possible serious injury or death.
Do not attempt to dive with any gas mix other than standard air without
first receiving certified training in this specialty.
1.1.1. Emergency Ascents
In the unlikely event that the dive computer malfunctions during a dive,
follow the emergency procedures provided by your certified dive training
agency or, alternatively,
STEP 1: Assess the situation calmly and then move promptly to
less than 18 m [60 ft].
STEP 2: At 18 m [60 ft], slow down your ascent rate to 10 m/min
[33 ft/min] and move to a depth between 3 and 6 meters
[10 to 20 ft].
STEP 3: Stay there as long as you assess your air supply will safely
allow. After reaching the surface stay out of the water for
at least 24 hours.
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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.
1.1.3. Nitrox
Diving with nitrox provides the diver with an opportunity to increase bot-
tom times or 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 fire or
explosion hazard. Consult with the manufacturer of your equipment in
regards to its compatibility with nitrox.
2. GETTING ACQUAINTED
2.1. FUNCTIONS
The Suunto VYTEC can be set to function as a regular air dive computer,
a nitrox dive computer or as a depth gauge with timer mode.
The VYTEC multipurpose dive computer is an air integrated computer
featuring three dive computer modes (AIR, NITROX, GAUGE), three
main operating modes (TIME/STAND-BY, SURFACE, DIVING), three
menu based main modes (MEMORY, SIMULATION, SET) and 18 menu
based submodes (review separate Quick Reference Guide). You can
scroll through the modes using the push buttons. The mode indicator at
the left side and the mode text at the bottom of the display indicate the
selected mode.
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The timekeeping display is the default display
of the instrument (Fig. 2.1.). If a button is not
pressed within 5 minutes, the dive computer
beeps and returns to the timekeeping display
automatically (except in Diving and Simula-
tion modes). The timekeeping display shuts
off after two hours, but pressing the PLAN or
TIME button activates it.
Making the Vytec personal
Fig. 2.1. Time keeping
display. Pressing PLAN
or TIME button activates
display.
For best use of the Vytec take some time and
make it YOUR computer.
Setthecorrecttimeanddate. Readthismanual.
Set dive alarms and make all the other settings
listed in the introduction in this manual. Install
the Vytec in your console or fit it on your wrist.
If the Vytec is to be used with the optional wire-
less pressure transmitter install it and enable
the pressure transmission in the Vytec’s set-
tings. Try the pressure transmission.
Use the dive simulator for getting to know the
dive display
Fig. 2.2. Push buttons
of the dive computer.
All this so you know your computer and have
it set up as you want it before getting into the
water.
2.2. PUSH BUTTONS
E
O
P
S
O
E
N
L
C
The dive computer has easy-to-use push
buttons and an advisory display, which guides
the user. The SMART (MODE) button is the
key to the system. The two scroll buttons,
PLAN and TIME, are used for scrolling up
and down the menus and to show the alterna-
tive displays. The dive computer is controlled
with these three push buttons as follows
(see Fig. 2.2.).
B
A
Fig 2.3. Depth sensor
(A), water/data transfer
contacts (B).
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Press the SMART (MODE) button
•
•
•
•
To activate the dive computer.
To change from the Surface Mode to the menu based modes.
To select, confirm or quit a submode (short press).
To immediately exit any submode to the Surface Mode
(long press).
•
•
To activate the electroluminescent backlight (in the Surface
Mode hold down the mode button for more than two (2)
seconds, during a dive for one (1) second).
To activate the gas change mode during a dive hold down the
mode button for more than two (2) seconds.
Press the arrow up scroll (PLAN) button
•
•
•
•
To activate the timekeeping display, if the display is blank.
To activate the Dive Planning in the Surface Mode.
To make a special bookmark in the profile memory during a dive.
To scroll up the options (s, increase).
Press the arrow down scroll (ALTER) button
•
•
•
To activate the timekeeping display, if the display is blank.
To activate the alternative display(s).
To scroll down the options (t, decrease).
The dive computer is controlled with the SMART (MODE/On/Backlight//
Select/OK/Quit) and the s PLAN and TIME t push buttons and with the
water contacts as follows:
Activation
press the SMART (On) button or immerse the
instrument in water for five (5) seconds.
Dive Planning
Menu Modes
in the Surface Mode, press the PLAN (s) button.
press the SMART (MODE) -button.
The display is illuminated in surface mode by holding down the ≤SMART
button for more than two seconds .
2.3. WATER CONTACTS
The water contacts control the automatic activation of the Dive Mode.
The water and data transfer contacts are located on bottom of the case
(Fig 2.3). When submerged the water contacts are connected to the push
buttons (which are the other pole of the water contact) by the conductiv-
ity of the water. The “AC” text (Active Contacts, Fig. 2.4.) will appear on
display. The AC text will be shown until the water contact deactivates or
the dive computer enters the Dive Mode automatically.
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2.4. WIRELESS CYLINDER
PRESSURE TRANSMISSION
The Vytec can be used together with an
optional wireless cylinder pressure transmitter
that can easily be attached to the high-pres-
sure port of the regulator (Fig. 2.5). By using
the transmitter the diver can benefit from cylin-
der pressure and remaining air time data.
In order to use the transmitter the wireless
integration needs to be enabled in the Vytec’s
settings. To enable or disable the wireless
integration refer to chapter 4.3.3.3 Cylinder
pressure settings.
Fig. 2.4. Active water
contacts are indicated
by the text AC.
2.4.1. Installing the Transmitter
Upon purchasing the Vytec, Suunto strongly
recommends you have your dealer attach the
transmitter to the first stage of your regulator.
If you decide to attach it yourself, follow the
steps outlined below:
Fig. 2.5. Vytec’s optional
wireless pressure trans-
mitter.
Remove the high pressure (HP) port plug
on the first stage of your regulator using an
appropriate tool.
Thread the high pressure transmitter of the Vy-
tec into the HP port of your regulator with your
fingers. DO NOT OVERTIGHTEN! Maximum
torque 6 Nm (4.4 ftlbs or 53 inlbs). Sealing is
based on a static o-ring, not force!
Attach the regulator to the scuba cylinder.
Slowly open the valve. Check for leaks by
submerging the regulator first stage in water.
If leaks are detected, check the condition of
the o-ring and sealing surfaces.
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2.4.2. Pairing and Code Selection
In order to receive wireless data the transmitter and the Vytec wrist unit
need to be paired. During the pairing procedure the transmitter and wrist
unit select a common transmission code.
The transmitter turns on when the pressure exceeds 15bar [218 psi] and
it then starts sending pressure data together with a code number. During
the pairing procedure the Vytec stores the above mentioned code number
and starts displaying pressure values that are received with that code.
This coding procedure inhibits data mix up from other divers also using
the Vytec’s transmitter.
When there is no stored code the Vytec will display “SETC” and receive
with lowered sensitivity from a very short distance only (Fig. 2.6 a). By
taking the Vytec close to the transmitter it will store the received code
and start receiving with full sensitivity and display data received with this
code only. The code is held stored for approximately 2 hours, or until the
cylinder pressure goes below 10 bar [145 psi]. The set code can also be
manually erased by the user.
To pair the transmitter and the wrist unit:
1. Make sure that the transmitter is properly attached to the regulators
HP port and that the regulator is properly attached to the cylinder.
2. Ensure that the Vytec is turned on, an that the wireless integration is
enabled in the Vytec’s settings (HP set on, see chapter 4.3.3.3). The
Vytec should display “SETC” in the lower left corner.
3. Slowly open the cylinder valve fully and pressurize the regulator. The
transmitter will start transmitting when the pressure exceeds 15bar
[218 psi].
4. Take the Vytec wrist unit close to the transmitter. The Vytec will now
shortly display the selected code number and then start displaying
the transmitted cylinder pressure.Alightning symbol will be displayed
every time the Vytec receives a valid signal.
WARNING:
In case there are several divers using Vytecs with wireless trans-
mission always ensure that all divers are on different codes before
starting the dive.
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The selected transmission code can later be
verified via the alternative display, by pressing
the “TIME” button twice. If needed, the stored
code can be manually erased in this display
by pressing the “PLAN” (up) button and then
pressing “MODE” (select). The Vytec will now
erase the stored code and start displaying
“SETC” allowing a new pairing with the trans-
mitter.
m
bar
DIVE TIME
The alternative display showing the select-
ed code reverts to the main display after 15
seconds in order to avoid accidental code
changes.
bar
DIVE TIME
The user can manually change the transmit-
ters code by reducing the pressure to less than
10 bar [145 psi] and then immediately (within
10-12s) increasing the pressure above 15 bar
[220 psi]. The transmitter will now select a new
code. The wrist unit must be in SETC mode to
pair on the new code. This procedure can be
used e.g. if your dive buddy has the same code
and you need to change the code.
bar
DIVE TIME
bar
DIVE TIME
NOTE: In order to save battery energy the
transmitter shuts off if the pressure remains
unchanged for more than 5 minutes and it
will continue transmitting with the saved code
when any pressure change is measured.
bar
DIVE TIME
Fig 2.6. Pressure
transmission related
displays.
2.4.3. Transmission Data
After the pairing procedure the Vytec will receive cylinder pressure data
from the transmitter. The pressure is displayed in either bars or psi de-
pending on the unit selection. Any time the Vytec receives an appropri-
ate signal it flashes the lightning figure in the display’s lower left corner.
A pressure reading of over 360 bar [5220 psi] will display as “---“ (Fig.
2.6 b).
If the Vytec is unable to receive a valid signal for more than one minute
it will start displaying “FAIL” intermittently with the latest valid pressure
reading (Fig. 2.6 c).
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In case the transmitter battery is running low, a low battery warning
“LOBT” will be transmitted and displayed intermittently with the pressure
reading on the Vytec (Fig.2.6 d).
If the dive is started without that the Vytec and the transmitter have been
properly paired, the Vytec will indicate that no cylinder data is available
by displaying “OFF” (Fig. 2.6 e).
TABLE 2.1. PRESSURE TRANSMISSION RELATED DISPLAYS
Display Indication
Figure 2.6
SETC
Set Code. No code stored,
wrist unit ready for pairing with transmitter.
a
b
- - -
Pressure reading over 360 bar [5220 psi]
FAIL
Indicates pressure reading has not been
updated in more than 1 minute.
Transmitter is out of range, in power saving
mode or on another channel. Activate the
transmitter by breathing off the regulator,
and recode the wrist unit if necessary.
c
LOBT
OFF
Indicates pressure transmitter battery voltage
is low. Change the transmitter battery!
d
Pairing has not been conducted before
start of dive. No cylinder data available.
e
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3. DIVING WITH THE VYTEC
DIVE
m
ft
CEILING
This section contains instructions on how to
operate the dive computer and interpret its
displays. You will find that this dive computer
is easy to use and read. Each display shows
only the data relevant to that specific diving
situation.
S
L
O
W
AVGPO2MAX
NO
O2%SURF
AIRTIME
STOP
ASC TIME
QUIT
OK
SELECT
NO DEC TIME
OLF
C
B
T
°
F
°
C
bar
psi DIVE TIME
OPTIONS
Fig. 3.1. Startup I.
All segments shown.
3.1. BEFORE DIVING
3.1.1. Activation and Prechecks
The dive computer will activate if submerged
deeper than 0.5 m (1.5 ft). However, it is ne-
cessary to turn on the Dive Mode before diving
to check the cylinder pressure, altitude and
personal adjustment settings, battery condi-
tion, oxygen settings etc. Press the SMART
(Mode) button to activate the instrument.
OK
After activation all display elements will turn
on showing mostly figure 8’s and graphi-
cal elements (Fig. 3.1.). A few seconds later
the battery power indicator is shown and
the backlight and the buzzer are activated
(Fig. 3.2. display a, b, c or d depending on the
battery voltage). If set to Air mode the screen
will enter the Surface mode (Fig. 3.3.). If set to
Gauge mode the text GAUGE is shown (Fig.
3.4.) and if set to Nitrox mode the essential
oxygen parameters are shown with the text NI-
TROX (Fig. 3.21.) before the Surface mode.
At this time, perform your prechecks making
sure that:
QUIT
•
the instrument operates in the correct
mode and provides a complete display
(Air/Nitrox/Gauge modes)
•
•
the low battery indicator is not on
the altitude, personal adjustment,
RGBM and safety/deep stops settings
are correct
Fig. 3.2. Startup II.
Battery power indicator.
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•
•
•
the instrument displays correct units of
measurement (Metric/Imperial)
the instrument displays correct
temperature and depth (0.0 m [0 ft])
m
the buzzer beeps
bar
DIVE TIME
IIf the optional wireless pressure trans-mitter
is used (see chapter 2.4. Wireless pressure
transmission) ensure that:
TIME
°C
•
•
•
the pressure transmitter has been-
properly attached and that the cylinder
valve is open
the transmitter and the wrist unit have
been properly paired on a suitable
code
the pressure transmitter is working
(lightning symbol blinks, cylinder-
pressure is displayed), and that there
is no low battery warningdisplayed
Fig 3.3. Startup III. Sur-
face mode. Depth and
dive time are zero and
cylinder pressure is 300
bar [4350 psi]. Pressing
TIME button activates
alternative display of
temperature and current
time.
•
you have enough air for your
planneddive. You should also check
the pressure reading against your
back-up pressure gauge.
And if set to Nitrox mode (refer to chapter 3.4
Diving in Nitrox mode), make sure that:
•
the correct number of mixes are set
and that the oxygen percentages are
adjusted according to the measured
Nitrox blends in your cylinders
Fig. 3.4. Startup IV. Gauge
mode.
•
the oxygen partial pressure limits are
set correctly.
m
The dive computer is now ready for diving.
bar
DIVE TIME
3.1.2. Battery Indication
3.1.2.1. Battery Power Indicator
Fig. 3.5. Low Battery
Warning. Battery symbol
indicates that the bat-
tery is low and battery
replacement is recom-
mended.
This dive computer has a unique graphic Bat-
tery Power Indicator designed to give you an
advance notice of impending need to change
the battery.
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The Battery Power Indicator can always be seen when 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.
TABLE 3.1. BATTERY POWER INDICATOR
Display
Operation
Figure 3.2
a
BAT + 4 segments + OK
BAT + 3 segments
Normal, full battery.
Normal, battery power is getting
low or the temperature is low.
Battery replacement is
recommended, if you are going
to colder conditions or if you are
planning to make a dive trip.
b
c
LOWBAT +
2 segments +
low battery symbol
Battery power is low and
the battery replacement is
recommended.
The battery symbol is displayed.
The backlight is disabled.
c
LOWBAT +
1 segment + QUIT+
low battery symbol
Change the battery!
d
Returns to the Time display.
Activation and all functions
are disabled.
Temperature or an internal oxidation of the
battery affects the battery voltage. If the in-
strument is stored for a long period, the low
battery warning may be displayed even though
the battery has enough capacity. The low bat-
tery warning may also be displayed at low tem-
peratures, even though the battery has enough
capacity in warmer conditions. In these cases
repeat the battery check procedure.
DIVE
MAX
QUIT
NO DEC TIME
Fig. 3.6. Dive Planning.
Planning mode is indi-
cated by PLAN text. No-
decompression time limit
at 30.0 m [100 ft] is 14
minutes in A0/P1 mode.
After battery check the Low Battery Warning is
indicated by the battery symbol (Fig. 3.5.).
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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.
3.1.2.2. Wireless Transmitter Battery Indicator
The pressure transmitter sends out a lowbat (LOBT) warning when its
battery voltage is getting low. This is shown intermittently instead of the
pressure reading (see chapter 2.4.3, Fig 2.6). When you get this warning
the pressure transmitter battery needs to be replaced.
3.1.3. Dive Planning [PLAN]
To enter Planning Mode, press the PLAN button at any time during Sur-
face Mode.After showing the text “PLAN” (Fig. 3.6.), the display will show
the no-decompression limit for the depth of 9 m [30 ft]. By pressing the
down arrow (t) (TIME) button, the dive computer will calculate and show
the next deeper no-decompression limits in 3 m [10 ft] increments ending
at 45 m [150 ft]. By pressing the up arrow (s) (PLAN) button, the next
shallower depth will be shown again.
The Planning Mode is canceled by pressing the SMART (QUIT) button.
NOTE! The Planning mode is disabled in Gauge mode and in Error mode
(see section 3.9. ”Error Conditions”). The planning mode calculates no
dec times for MIX1 only. If additional mixes are enabled in the Nitrox
mode they do not affect the calculations in PLAN mode.
HigherAltitude and conservative PersonalAdjustment Modes will shorten
the no-decompression time limits. These limits at different Altitude and
Personal Adjustment Mode selections are shown in Table 6.1 and 6.2 in
section 6.1. ”Operating Principles”.
The Planning mode also accounts for the following information from pre-
vious dives:
•
•
•
any calculated residual nitrogen
all dive history for the past four days
oxygen toxicity (Nitrox mode)
The no-decompression times given for different depths will therefore be
shorter than before your first “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-fly time at the beginning of the dive.
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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 also section 3.6.2. “Dive Numbering”).
3.1.4. User Definable Functions and Alarms
This Vytec has several User Definable Functions and depth and time
related alarms that you can set according to your personal preference.
The dive computer model, unit of measurement and backlight prefer-
ences can be set in the MODE- SET- SET PREF submode. The dive time
and the depth alarms can be set in the MODE- SET- SET DIVE submode
and the alarm clock can be set in the MODE- SET- SET TIME submode.
Setting of the user definable functions and alarms are explained in detail
in section 4.3. “Set Modes”.
3.2. SAFETY STOPS
Safety stops are widely considered “good diving practice” and are an
integral part of most dive tables. Reasons to perform a safety stop include
a reduction in sub clinical DCI, microbubble reduction, ascent control, and
orientation before surfacing.
The Vytec displays two different types of safety stops: Recommended
Safety Stop and Mandatory Safety Stop.
The Safety Stops are indicated by:
-
-
-
STOP label, when in the depth range 3 m – 6 m [10 ft - 20 ft] =
Recommended Safety Stop Countdown
STOP+ CEILING label, when in the depth range 3 m – 6 m
[10 ft - 20 ft] = Mandatory Safety Stop Time display
STOP label, when deeper than 6 m = Mandatory Safety Stop
scheduled
3.2.1. Recommended Safety Stop
With every dive over 10 meters the instrument has a three minute count-
down 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. 3.11.).
The Recommended Safety Stop, as the name implies, is recommended.
If it is ignored, there is no penalty applied to the following surface inter-
vals and dives.
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3.2.2. Mandatory Safety Stop
m
When the ascent rate exceeds 12 meters/min
[40 ft] momentarily or 10 meters/min [33ft] con-
tinuously the micro-bubble build-up is predicted
to be more than allowed for in the decompres-
sion model. The Suunto RGBM calculation
model responds to this by adding a Mandatory
Safety Stop to the dive. The time of this Manda-
tory Safety Stop will depend on the severity of
the ascent rate excess.
MAX
NO DEC TIME
C
B
T
bar
DIVE TIME
Fig. 3.7. Dive has just begun
and no air time is shown.
First estimate of remaining
air time will be shown after
30-60 seconds.
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. 3.14.).
m
MAX
The Mandatory Safety Stop time always in-
cludes 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.
AIRTIME
bar
NO DEC TIME
DIVE TIME
C
B
T
You must not ascend shallower than 3 m [10 ft]
with the Mandatory Safety Stop warning on. If
you ascend above the Mandatory Safety Stop
ceiling, a downward pointing arrow will appear
and a continuous beeping starts (Fig. 3.15.).
You should immediately descend to, or below,
Fig. 3.8. Diving display. Pres-
ent 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 was
19.8 m [65 ft], elapsed dive the Mandatory Safety Stop ceiling depth. If you
time is 16 minutes.
correct this situation at any time during that dive,
there are no affects on the decompression cal-
culations for future dives.
If you continue to violate the Mandatory Safety
m
Stop, the tissue calculation model is affected
MAX
and the dive computer shortens the available
no-decompression time for your next dive. In
this situation, it is recommended to prolong your
surface interval time before your next dive.
AIRTIME
bar
NO DEC TIME
DIVE TIME
C
B
T
°C
TIME
Fig. 3.9. Diving display. Present cylinder pressure is 210 bar [3045 psi]
and remaining air time 41 minutes. Alternative display of current time and
temperature is shown for 5 seconds after pressing TIME button.
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3.2.3. Deep Stops
The Suunto Vytec allows the user to choose a deep stop algorithm
instead or the traditional recommended safety stop. Deep Stops are
decompression stops that occur deeper than traditional stops, with the
purpose of minimizing microbubble formation and excitation.
The Suunto RGBM model calculates deep stop iteratively, placing the
first stop about halfway between the maximum depth and the ceiling
depth. After the first deep stop has been completed, another deep stop
will be prompted halfway to the ceiling, and so on until the ceiling depth
is reached.
The deep stop length can be set to 1 or 2 minutes.
Enabling the Deep Stops disables the Recommended Safety Stops, but
the Mandatory Safety Stops due to e.g. continuous ascent rate violations
are still prompted.
3.3. DIVING IN AIR MODE
The Vytec has three operating modes: Air mode for diving with standard
air only, Nitrox mode for diving with oxygen enriched (EANx) mixtures and
Gauge mode for use as bottomtimer. TheAir mode is enabled in the MODE-
SET-SET PREF-MODEL submode (see section 4.3. “Set Modes”).
3.3.1. 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. 3.7.).
All information on the display is labeled (Fig. 3.7. and 3.8.). During a no-
decompression stop dive, the following information will be displayed:
•
•
•
your present depth in meters [ft]
the maximum depth during this dive in meters [ft], indicated as MAX
the available no-decompression time in minutes in the center
window as NO DEC TIME and as a bar graph on the left side of
the display. It is calculated based on the five factors described in
section 6.1. ”Operating Principles”.
•
•
the water in temperature in °C [°F] in the lower left corner
the elapsed dive time in minutes, shown as DIVE TIME in the
lower right corner
•
the Altitude Adjustment setting on the left side of the center window
with a wave and mountain symbols (A0, A1, or A2) (see Table 3.4.)
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•
the PersonalAdjustment setting on the
left side of the center window with a
diver symbol and + signs (P0, P1, or
P2) (see Table 3.5.)
m
MAX
•
•
theDiverAttentionSymbolifattenuated
RGBM has been set (see Table 3.3.)
blinking Diver Attention Symbol if
surface interval should be prolonged
(see Table 3.3.)
AIRTIME
bar
NO DEC TIME
C
B
T
DIVE TIME
Fig. 3.10. Bookmark
activation. An annotation,
Bookmark, is placed
in the profile memory during
a dive by pressing PLAN
button. Note the Logbook
symbol.
In addition with the optional wireless transmis-
sion enabled:
•
the Remaining Air-time in the left
center window
•
the cylinder pressure in bar [or psi]
displayed in the lower left corner
Alternative displays by pressing the TIME but-
ton (Fig. 3.9.):
m
•
•
the current time, shown as TIME
the water temperature in °C [°F]
MAX
STOP
AIRTIME
C
B
T
NOTE! In Dive Mode the alternative display switch-
bar
DIVE TIME
es back to the main display after 5 seconds.
3.3.2. Bookmark
Fig. 3.11. A three minute
Recommended Safety
Stop.
It is possible to make special marks in the profile
memory during a dive. These Bookmarks will be
shown as a dive log symbol when scrolling the
profile memory on the computer display. The
Bookmarks will also be shown as annotations
in the PC-software, Suunto Dive Manager. To
make a bookmark on the profile memory during
a dive press the PLAN button (Fig. 3.10.).
m
MAX
AIRTIME
bar
NO DEC TIME
DIVE TIME
C
B
T
3.3.3. Cylinder Pressure Data
When using the optional wireless pressure
transmitter the pressure of your scuba cylinder
in bars [psi] will be shown digitally in the lower
left corner of the display Anytime you enter
into a dive, the remaining air time calculation
begins. After 30 - 60 seconds (sometimes
more, depending on your air consumption),
the first estimation of remaining air time will be
Fig. 3.12. Cylinder pres-
sure warnings. Pressure
has dropped below 50 bar
[725 psi]. Pressure dis-
play is blinking and there
is an audible alarm.
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shown in the left center window of the display. The calculation is always
based on the actual pressure drop in your cylinder and will automatically
adapt to your cylinder size and current air consumption.
The change in your air consumption will be based on constant one
second interval pressure measurements over 30 - 60 second periods.
An increase in air consumption will influence the remaining air time rap-
idly, while a drop in air consumption will increase the air time slowly. Thus
a too optimistic air time estimation, caused by a temporary drop in air
consumption, is avoided.
The remaining air time calculation includes a 35 bar [500 psi] safety
reserve. This means that when the instrument shows the air time to be
zero, there is still about 35 bar [500 psi] pressure left in your cylinder
depending on your air consumption rate. With a high consumption rate
the limit will be close to 50 bar [725 psi] and with a low rate close to 35
bar [500 psi].
NOTE! Filling your BC will affect the air time calculation, due to the tem-
porary increase in air consumption.
NOTE! A change of temperature will affect the cylinder pressure and
consequently the air time calculation.
Low Air Pressure Warnings
The dive computer will warn you with three audible double beeps and a
blinking pressure display when the cylinder pressure reaches 50 bar [725
psi] (Fig. 3.12.). Three double beeps are also heard when the cylinder
pressure goes down to the user selected alarm pressure and when the
remaining air time reaches zero.
3.3.4. Consumed Bottom Time (CBT)
The available no-decompression stop time is also shown visually in the
multi-function bar graph on the left side of the display (Fig. 3.7., 3.8. and
3.9.). When your available no-decompression time decreases below 200
minutes, the first (lowest) bar graph segment appears. As your body
absorbs more nitrogen, more segments start to appear.
White Zone - As a safety precaution Suunto recommends you should
maintain the no-decompression bar graph within the white zone. Seg-
ments start to appear when the available no-decompression time de-
creases below 100, 80, 60, 50, 40, 30 and 20 minutes.
Gray Zone- As the bars reach the gray zone, your no-decompression
stop time is less than 10 or 5 minutes and you are getting very close
to no-decompression limits. At this point, you should start your ascent
towards the surface.
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Red Zone –As all of the bars appear (red zone), your no-decompression stop
time has become zero and your dive has become a decompression stop dive
(for more information see section 3.3.6. “Decompression dives”).
3.3.5. Ascent Rate Indicator
The ascent rate is shown graphically along the right side of the display
as follows:
TABLE 3.2. ASCENT RATE INDICATOR
Ascent Rate
Indicator
The equivalent
ascent speed
Example
in Fig.
No segments
One segment
Two segments
Three segments
Four segments
Below 4 m/min [13 ft/min]
4 - 6 m/min [13 – 20 ft/min]
6 - 8 m/min [20 – 26 ft/min]
8 - 10 m/min [26 – 33 ft/min]
10 - 12 m/min [33 – 39 ft/min]
3.8
3.9
3.10
3.11
3.12
Four segments, the
SLOW segment,
Above 12 m/min [39 ft/min] or
continuously above
blinking depth reading,
the STOP sign and
an audible alarm
10 m/min [33 ft/min]
3.13
When the maximum allowed ascent rate is exceeded, the fifth SLOW
warning segment and the STOP sign appear and the depth reading starts
to blink, indicating that the maximum ascent rate has been exceeded
continuously or that the current ascent rate is significantly above the
allowed rate.
Whenever the SLOW warning segment and the STOP sign appear
(Fig. 3.13.), 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. 3.14.). 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 com-
pleted the decompression model will penalize your next dive(s).
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3.3.6. Safety Stops and Deep Stops
If Deep Stops are not used a 3 minute Recom-
mended Safety Stop is prompted after every
dive to 10m depth (fig. 3.11). Continuous ascent
rate violations will result in Mandatory Safety
Stops (fig. 3.14). When enabled, Deep stops
are calculated. The length of the recommended
Deep Stop is indicated in seconds (fig. 3.15b)
m
S
L
O
W
MAX
STOP
AIRTIME
bar
NO DEC TIME
DIVE TIME
C
B
T
Fig. 3.13. Ascent Rate
Indicator. Blinking depth
reading, 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 m [20 ft].
3.3.7. Decompression dives
When your NO DEC TIME becomes zero, your
dive becomes a decompression stop dive, i.e.
you must perform one or several decompres-
sion stops on your way to the surface. The NO
DEC TIME on your display will be replaced
by an ASC TIME notation and the maximum
depth will be replaced by a CEILING notation
and an upward pointing arrow (Fig. 3.16.).
If you exceed the no-decompression limits on a
dive, the dive computer will provide decompres-
sion information required for ascent.After this, the
instrument will continue to provide subsequent
interval and repetitive dive information.
m
CEILING
MAX
STOP
Rather than requiring you to make stops at
fixed depths, the dive computer lets you to de-
compress within a range of depths (Continu-
ous Decompression).
AIRTIME
C
B
T
bar
DIVE TIME
TIME
°
C
The ascent time (ASC TIME) is the minimum
amount of time needed to reach the surface in
a decompression dive. It includes:
Fig. 3.14. A Mandatory
Safety Stop. You are
advised to make a Man-
datory Safety Stop in
the depth zone between
6 m and 3 m [20 ft and
10 ft]. Pressing TIME
button shows alternative
display.
•
the time needed to ascend to
the ceiling at an ascent rate of
10 m/min [33 ft/min]
plus
•
the time needed at the ceiling. The
ceiling is the shallowest depth to
which you should ascend
plus
•
the time needed at the Mandatory
Safety Stop (if any)
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27
plus
•
the time needed to reach the surface after the ceiling and safety
stops have been completed.
WARNING!
YOUR ACTUAL ASCENTTIME MAYBE LONGERTHAN DISPLAYED
BY THE INSTRUMENT! The ascent time will increase if you:
•
•
•
remain at depth
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.
CEILING, CEILING ZONE, FLOOR AND
DECOMPRESSION RANGE
When in decompression, it is important that you understand the meaning
of ceiling, floor, and decompression range (Fig. 3.20.):
•
•
•
•
The ceiling is the shallowest depth to which you should ascend
when in decompression. 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 floor 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 floor. Within this range, decompression takes place. However, it
is important to remember that the decompression will be very slow
at, or close to, the floor.
The depth of the ceiling and floor will depend on your dive profile. 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 floor and ceiling may change upwards
while you are decompressing.
When conditions are rough, it may be difficult 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
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28
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 air to decompress below the ceil-
ing than at the ceiling.
WARNING!
NEVERASCENDABOVE 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.
DISPLAY BELOW THE FLOOR
The blinking ASC TIME and an upward point-
m
CEILING
ing arrow indicate that you are below the floor
(Fig. 3.16.). You should start your ascent im-
STOP
mediately. The ceiling depth is shown on the
AIRTIME
right top corner and the minimum total ascent
C
B
T
bar
DIVE TIME
time on the right side of the center window.
DISPLAY ABOVE THE FLOOR
When you ascend above the floor, the ASC
TIME display stops blinking and the upward
pointing arrow disappears (Fig. 3.17.). Decom-
pression will now begin, but is very slow. You
should therefore continue your ascent.
Fig. 3.15. Violated
Mandatory Safety Stop.
Downward pointing arrow
and an audible alarm indi-
cate you should descend
to ceiling zone.
DISPLAY AT THE CEILING ZONE
When you reach the ceiling zone, the display
will show you two arrows pointing at each other
(the “hour glass” icon, Fig 3.18.). Do not as-
cend above this zone.
m
CEILING
STOP
AIRTIME
During the decompression stop,ASC TIME will
count down towards zero. When the ceiling
moves upwards, you can ascend to the new
ceiling. You may surface only after the ASC
TIME and CEILING labels have disappeared,
which means that the decompression stop and
any Mandatory Safety Stop has been complet-
ed. 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.
C
B
T
bar
DIVE TIME
Fig. 3.15b Deepstop.
Arrows indicate you are
at the deep stop depth.
There is 59 seconds
left to complete the
deepstop.
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29
DISPLAY ABOVE THE CEILING
m
CEILING
If you ascend above the ceiling during a de-
compression stop, a downward pointing arrow
will appear and a continuous beeping starts
(Fig. 3.19.). 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.
ASC TIME
AIRTIME
bar
C
B
T
DIVE TIME
Fig. 3.16. Decompression dive,
below floor. 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].
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 also
section 3.9. “Error Conditions”).
m
CEILING
3.4. DIVING IN NITROX MODE
3.4.1. Before Diving
ASC TIME
AIRTIME
C
B
T
The Vytec has three operating modes: Air mode for
diving with standard air only, Nitrox mode for diving
with oxygen enriched (EANx) mixtures and Gauge
mode for use as bottomtimer. The Nitrox mode is
enabled in the MODE-SET-SET PREF-MODEL
submode (see section 4.3. “Set Modes”).
bar
DIVE TIME
Fig. 3.17. Decompression
dive, above floor. Upward
pointing arrow has disap-
peared and ASC TIME label
has stopped blinking, which
means that you are in the
decompression range.
If set to the Nitrox mode, the correct oxygen
percentage of the gas in your cylinder must al-
ways be entered into the computer to ensure
correct nitrogen and oxygen calculations. The
dive computer adjusts its mathematical nitro-
gen and oxygen calculation models. 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 under-
stated and will affect decompression calcula-
tions. If there is a desire to adjust the computer
to provide more conservative calculations, use
the personal adjustment feature to affect decom-
pression calculations or reduce the PO2 setting
to affect oxygen exposure according to the en-
tered O2% and PO2 values. Calculations based
m
CEILING
MAX
STOP ASC TIME
AIRTIME
C
B
T
TIME
bar
DIVE TIME
°
C
Fig. 3.18. Decompression
dive, at ceiling zone. Two
arrows point at each other
(“hour glass”). You are in the
optimum ceiling zone at 3.5
m [11 ft] and your minimum
ascent time is 5 minutes.
Pressing TIME button acti-
vates alternative display.
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30
on Nitrox use result in longer no-decompression
times and shallower maximum depths than div-
ing with air.
m
CEILING
STOP ASC TIME
As a safety precaution the oxygen calculations
in the computer are made with an oxygen per-
centage of 1% + setO2% .
AIRTIME
bar
C
B
T
DIVE TIME
When the dive computer is set in Nitrox mode
the Dive Planning and Dive Simulation modes
both calculate with the O2% and PO2 values
that are currently in the computer.
Fig. 3.19. Decompression
dive, above ceiling.
Note downward pointing
arrow, Er warning and
an audible alarm. You
should immediately (with-
in 3 minutes) descend to
or below ceiling.
To set the Nitrox mixes refer to chapter 4.3 Set
Modes.
DEFAULT NITROX SETTINGS
In Nitrox mode the Vytec allows the user to set
1-3 nitrox mixes containing 21-99% oxygen.
In the Nitrox mode, the default setting for MIX1
is standard air (21% O2). It remains in this setting
until the O2% is adjusted to any other percentage of
oxygen (22% - 100%). The default setting for maxi-
mum oxygen partial pressure is 1.4 bar, however
you are able to set it in the range of 0.5 - 1.6 bar.
CEILING
3m / 10ft
6m / 18ft
FLOOR
Fig. 3.20. Ceiling and
Floor Zones. The Recom-
mended and Manadatory
Safety Stop zone lies
between 6m and 3m [20 ft
and 10ft].
If unused, the computer will retain the manually
entered values for the oxygen percentage and
maximum oxygen partial pressure for MIX1 for
about two hours, after which it will revert to the
default settings.
MIX2 and MIX3 are by default set to OFF. To
set MIX2 and MIX 3 refer to chapter 3.4.4 Gas
change and multiple breathing mixes. Oxygen
percentages and maximum oxygen partial pres-
sures for MIX2 and MIX3 are stored permanent-
ly. If MIX2 and MIX3 are set OFF, the computer
will retain the manually entered values for the
oxygen percentage and maximum oxygen par-
tial pressure for MIX1 for about two hours, after
which it will revert to the default settings.
m
PO2
O2%
OLF
Fig. 3.21. Nitrox display.
Maximum depth based
on set O2% (21%) and
PO2 (1.4 bar) is 54.1 m
[177 ft].
3.4.2. Oxygen Displays
If set to Nitrox mode the NITROX display,
with all labeled oxygen information and the
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31
label NITROX, is shown after activation. In
Dive Planning mode the Nitrox display shows
(Fig. 3.21.):
m
MAX
•
•
•
•
the oxygen percentage, labeled with
O2%, is shown in the left side of the
center window
the set oxygen partial pressure limit,
labeled with PO2, is shown in the
upper right display
the maximum allowed depth based on
the set oxygen percentage and partial
pressure limit
the current oxygen toxicity exposure
shown with an Oxygen Limit Fraction
(OLF) bar graph along the left side of
the display (instead of the CBT).
O2%
NO DEC TIME
OLF
bar
DIVE TIME
Fig. 3.22. Diving in
Nitrox mode. The O2%
is set to 32%.
m
MAX
In the Dive modes, the oxygen percentage la-
beled with O2% and the current oxygen toxicity
exposure shown with an Oxygen Limit Frac-
tion (OLF) bar graph are shown (Fig. 3.22.
and Fig. 3.23.). If the wireless transmission
is enabled the O2% is shown until the remain-
ing air time is less than 30 minutes. After this,
the remaining air time is displayed in its place.
During a dive, the oxygen partial pressure, la-
beled with PO2, is also shown instead of the
maximum depth in the upper right display, if
the partial pressure is greater than 1.4 bar or
the set value (Fig. 3.24.).
AIRTIME
bar
NO DEC TIME
DIVE TIME
OLF
Fig. 3.23. Diving in Nitrox
mode. After air time is
less than 30 minutes O2%
is substituted by Air Time
display.
m
PO2
O2%
By pressing the TIME button during a nitrox
dive, the alternative display appears, which
includes (Fig. 3.25.):
NO DEC TIME
OLF
bar
DIVE TIME
•
•
•
•
current time
temperature
Consumed Bottom Time
maximum depth (during decom-
pression stop dive).
remaining air time when remaining air
time is over 30min
oxygen percentage when remaining
air time less than 30 min
Fig. 3.24. Oxygen partial
pressure and OLF displays.
There is an audible alarm
as oxygen partial pressure
is greater than 1.4 bar or
set value, and/or the OLF
has reached 80% limit.
•
•
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32
After five seconds the display will automatically
revert to the original display.
m
MAX
O2%
3.4.3. Oxygen Limit Fraction
(OLF)
In addition to tracking the diver’s exposure to
nitrogen, the instrument tracks the exposure to
oxygen, if set to Nitrox mode. These calculations
are treated as entirely separate functions.
NO DEC TIME
C
B
T
°
C
TIME
Fig. 3.25. Alternative
display. Pressing TIME
button displays current
time, maximum depth,
temperature, CBT and
O2%, if Air Time is less
than 30 minutes.
The dive computer calculates separately for
Central Nervous System oxygen toxicity (CNS)
and Pulmonary Oxygen toxicity, the latter mea-
sured by the addition of Oxygen Toxicity Units
(OTU). Both fractions are scaled so that the
maximum tolerated exposure for each is ex-
pressed as 100%.
m
The Oxygen Limit Fraction (OLF) has 11 seg-
ments, each representing 10%. 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 ad-
dition 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
section 6.3. “Oxygen Exposure”.
MAX
AIRTIME
bar
NO DEC TIME
DIVE TIME
OLF
Fig. 3.26. The lowest bar
graph blinks to indicate
that the OLF value shown
relates to OTU.
3.4.4. Gas Change, Multiple
Breathing Gas Mixes
m
The Vytec has as a special feature the possibil-
ity to set two additional nitrox mixes to be used
during the dive. This feature can be activated
by setting the MIX2 and/or MIX3 “ON” and
entering other parameters in the same way
as on the primary gas (See chapter 4.3.1.4
Nitrox/Oxygen settings). Mix 2 and 3 settings
are held until you change them (they will not
return to default settings automatically). Cyl-
inder pressure data is available for one wire-
less transmitter only. A dive is always started
with MIX1, during the dive the Vytec lets you
change to any enabled mix, which is within the
PO2
O2%
OK
Fig. 3.27 Changing gas
mix. Current gas mix is MIX1
(21%). Scroll though enabled
mixes by pressing PLAN or
TIME button. Select new
mix by pressing MODE (OK)
button.
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33
set maximum oxygen partial pressure. Tissue calculation during dive is
based on the mix you have selected.
The Vytec allows gas change to enabled gas mixes during the dive. Gas
change is made by the following procedure:
•
Press the MODE button until the Vytec starts to show blinking
“MIX” instead of temperature/cylinder pressure in the lower left
display (Fig. 3.27).
•
•
Scroll between enabled mixes with PLAN and TIME buttons
Mix number, O2% and PO2 for the mixes are shown when
scrolling. If set PO2 is exceeded it will be shown with the value
blinking and upward pointing arrow
•
•
Select mix by pressing MODE.
If no button is pressed in 15 seconds the Vytec will go back to
dive display without changing gas mix. The Vytec does not allow
change to a gas when set PO2 is exceeded. In such a case the
mix is shown but cannot be selected (“select” text is not shown).
Upon ascent the Vytec prompts you to change gas when the PO2 level
you have set for next mix is allowing a gas change. The prompt is an
audible three beeps and the current mix O% starts to blink.
NOTE: The Vytec will not let you switch to gases which maximum PO2
levels are exceeded.
3.5. DIVING IN GAUGE MODE
If set to Gauge mode, the dive computer can be used as a bottom timer
for diving with technical diving mixed gases. If you are trained for techni-
cal diving and you plan to use Gauge mode on a regular basis, it may
be preferable to set the instrument permanently to its Gauge mode. The
Gauge mode is enabled in the MODE-SET-SET PREF-MODEL submode
(see section 4.3. “Set Modes”).
If set to Gauge mode the text GAUGE is shown after activation (Fig. 3.4.).
In the Gauge mode the total Dive Time is always displayed in minutes
in the lower right corner. In addition a Dive Timer in the center window
displays time in minutes and seconds. The center window Dive Timer is
activated at the start of the dive and it can be reset during the dive and
used as a stopwatch by pressing the PLAN button.
When the PLAN button is pressed during the dive:
•
•
A special mark, bookmark is written in the profile memory.
The Dive Timer shown in the center window is stopped, reset and
started again.
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34
Tank pressure and ascent rate indicator are
also displayed during the dive (Fig. 3.28.).
Remaining Air Time, temperature and current
time are shown in the alternative display when
the TIME button is pressed.
m
MAX
NOTE! If you dive with the Gauge mode, it is
not possible to change between the modes
within 48 hours.
bar
DIVE TIME
Fig. 3.28. Diving in
Gauge mode. Current
dive time is 30 minutes
21 seconds.
3.6. AT THE SURFACE
3.6.1. Surface Interval
An ascent to any depth shallower than 1.2 m [4
ft] will cause the DIVING display to be replaced
by the SURFACE display, giving the following
information (Fig. 3.29.):
m
•
maximum depth of last dive in me-
ters [ft]
MAX
NO
•
•
present depth in meters [ft]
no-flying warning indicated by an air-
bar
DIVE TIME
plane icon (Table 3.3)
•
•
•
Altitude Adjustment setting
Personal Adjustment setting
Diver attention symbol indicates
attenuated RGBM model has been
set
Flashing Diver attention symbol
indicates surface interval time should
be prolonged (Table 3.3)
STOP label for 5 min, if the Mandatory
Safety Stop was violated
Er, if the decompression ceiling was
violated (= Error Mode) (Fig. 3.32,
Table 3.3)
Cylinder pressure in bars [psi] (if “on”,
if “off” temperature is shown)
Fig. 3.29. Surface dis-
play. 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].Airplane symbol
indicates that you should
not fly and blinking Diver
Attention Symbol
•
•
•
indicates that you should
prolong your surface
interval time because of
excess micro-bubbles.
•
•
dive time of last dive in minutes, shown
as DIVE TIME.
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35
Or when the TIME button is pressed once or
twice:
m
•
•
•
the current time, shown as TIME
instead of the DIVE TIME
the current temperature with °C for
Centigrade [or °F for Fahrenheit]
the surface time in hours and minutes
(separated by a colon), telling the
duration of the present surface interval
(Fig. 3.30.)
the desaturation/no-flying time in
hours and minutes is shown next to
the airplane in the center window of
the display (Fig. 3.31.).
MAX
NO
SURF
TIME
°C
TIME
Fig 3.30. Surface interval, Sur-
face time display. Pressing TIME
button once will show surface
time display.
•
m
If set to Nitrox mode, the following information
will also be shown:
MAX
NO
•
the oxygen percentage labeled with
O2% is shown on the left side of the
center window
°
C
TIME
•
the current oxygen toxicity exposure
shown with an Oxygen Limit Fraction
(OLF) bar graph along the left side of
the display.
Fig. 3.31. Surface interval,
no-flying time. Pressing
TIME button twice will
show no-flying time,
indicated by an airplane
symbol.
3.6.2. Dive Numbering
Several repetitive dives are considered to be-
long to the same repetitive dive series when
the dive computer has not counted the no-fly-
ing time to zero. Within each series, the dives
are given individual numbers. The first dive of
the series will be numbered as DIVE 1, the
second as DIVE 2, the third as DIVE 3, etc.
m
MAX
NO
°
C
DIVE TIME
If you start a new dive with less than 5 minutes
of surface interval time, the dive computer in-
terprets 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 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
Fig. 3.32. Surface Mode
after a violated decom-pres-
sion dive. Er symbol indi-
cates that you have violated
the ceiling for
more than three minutes.
You must not dive again
for at least 48 hours.
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36
in the Planning Mode will increment to the next higher number if another
dive is made.
TABLE 3.3. WARNING SYMBOLS
3.6.3. Flying After Diving
The no-flying 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-flying time.
NOTE! The airplane symbol is not shown on the stand-by display. You
should always activate the dive computer and check that the airplane
symbol is not displayed prior to flying.
The no-flying 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 and Gauge mode the no-flying time is 48
hours.
Divers Alert Network (DAN) recommends the following on no-flying
times:
•
Aminimum 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 flight. Further, the Undersea and Hyperbaric
Medical Society (UHMS) suggests divers using standard air
cylinders and exhibiting no symptoms of decompression illness
wait 24 hours after their last dive to fly in an aircraft with cabin
pressure up to 2400 m [8000 ft]. The only two exceptions to this
recommendation are:
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37
•
•
•
If a diver had less than 2 hours total accumulated dive time in
the last 48 hours, then a 12 hour surface interval before flying is
recommended.
Following any dive that required a decompression stop, flying
should be delayed for at least 24 hours, and if possible, for 48
hours.
Suunto recommends that flying is avoided until all the DAN and
UHMS guidelines and the dive computer wait to fly conditions
are satisfied.
3.7. AUDIBLE AND VISUAL ALARMS
The dive computer features audible and visual alarms to advise when
important limits are approached or to acknowledge preset alarms.
A short single beep occurs, when:
•
•
the dive computer is activated.
when the dive computer automatically returns to the TIME
mode.
Three double beeps occur, when:
•
the cylinder pressure reaches 50 bar [725 psi]. The cylinder
pressure display will start to blink (Fig. 3.12.).
•
•
the cylinder pressure reaches the selected alarm pressure.
the calculated remaining air time reaches zero.
Three single beeps with a two second interval and the backlight
activated for 5 seconds occur, when:
•
the no-decompression dive turns into a decompression stop
dive. An arrow pointing upwards and the blinking ascent warning
ASC TIME will appear (Fig. 3.16.).
•
Gas change is prompted
Continuous beeps and the backlight activated for 5 seconds oc-
cur, when:
•
•
•
the maximum allowed ascent rate, 10 m/min [33 ft/min], is
exceeded. SLOW and STOP warnings will appear (Fig. 3.13.).
the Mandatory Safety Stop ceiling is exceeded. A downward
pointing arrow will appear (Fig. 3.15.).
the decompression ceiling depth is exceeded.An error warning Er
and a downward pointing arrow appear. You should immediately
descend to, or below, the ceiling. The instrument will otherwise
enter a permanent Error Mode within three minutes, indicated
by a permanent Er (Fig. 3.19.).
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38
You are able to preset alarms before the actual dive. The user program-
mable alarms can be set for maximum depth, dive time and time. The
alarms activate when:
•
The preset maximum depth is reached
•
continuous beep series for 24 seconds or until any button is
pressed.
•
the maximum depth blinks as long as the present depth value
exceeds the adjusted value.
•
•
The preset dive time is reached
•
continuous beep series for 24 seconds or until any button is
pressed.
•
the dive time blinks for one minute, if no button is pressed.
The preset alarm time is reached
•
•
the current time is shown.
continuous beep series for 24 seconds or until any button is
pressed.
•
the current time blinks for one minute, if no button is pressed.
OXYGEN ALARMS IN NITROX MODE
Three double beeps and the backlight activated for 5 seconds
occur, when:
•
the OLF bar graph reaches 80%. The segments exceeding the
80% limit start to blink (Fig. 3.24.)
•
the OLF bar graph reaches 100%.
The blinking of the segments exceeding 80% will stop, when the OLF is
not loading anymore. At that point the PO2 is less than 0.5 bar.
Continuous beeps for 3 minutes and the backlight activated
for 5 seconds occur, when:
•
the set oxygen partial pressure limit is exceeded. The maximum
depth is replaced with a current blinking PO2 value. You should
immediately ascend above the PO2 depth limit (Fig. 3.24.).
NOTE! When the backlight is turned OFF, it does not illuminate when an
alarm is activated.
WARNING!
WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE MAXI-
MUM LIMIT IS REACHED, YOU MUST IMMEDIATELYASCEND UNTIL
THE WARNING STOPS BLINKING! Failure to take action to reduce
oxygen exposure after the warning is given can rapidly increase the
risk of oxygen toxicity and the risk of injury or death.
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39
3.8. HIGH ALTITUDE DIVES AND PERSONAL
ADJUSTMENT
The dive computer can be adjusted both for diving at altitude and also to
increase the conservatism of the mathematical nitrogen model.
3.8.1. Altitude Adjustment
When programming the instrument for the correct altitude, you need to
select the correct Altitude Mode according to Table 3.4. The dive com-
puter will adjust its mathematical model according to the entered altitude
mode, giving shorter no-decompression times at higher altitudes (see
Section 6.1. ”Operating Principles”, Table 6.1. and 6.2.).
TABLE 3.4. ALTITUDE ADJUSTMENT RANGES
Altitude
mode
Symbol
on display
Altitude
range
A0
A1
A2
0 - 300 m [0 - 1000 ft]
300 - 1500 m [1000 - 5000 ft]
1500 - 3000 m [5000 - 10000] ft]
The entered Altitude Adjustment Mode is indicated by mountain symbols
(A0, A1 = one mountain, or A2 = two mountains). Section 4.3.1.1. ”Al-
titude Adjustment and Personal Adjustment Setting” 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.
3.8.2. Personal Adjustment
There are adverse personal factors for DCI which divers can predict
in advance and input into the decompression model. Factors that may
affect susceptibility to decompression illness vary between divers and
also for the same diver from one day to another. The three-step Personal
Adjustment Mode is available, if a more conservative dive plan is desired.
For very experienced divers, a two step adjustment for RGBM effect on
repetitive dives is available.
The personal factors which tend to increase the possibility of DCI include,
but are not limited to:
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40
•
•
•
•
•
•
•
cold exposure - water temperature less than 20 °C [68 °F]
the diver is below average physical fitness level
diver fatigue
diver dehydration
previous history of DCI
stress
obesity
The Personal Adjustment Mode is indicated by a diver symbol and plus
signs (P0 = a diver, P1 = diver +, or P2 = diver ++). Section 4.3.1.1. ”Al-
titude Adjustment and Personal Adjustment Setting” describes how the
Personal Mode is adjusted.
This feature should be used to adjust the computer to be more conserva-
tive, according to personal preference, by entering the suitable Personal
Adjustment Mode with the help of Table 3.5. In ideal conditions, retain
the default setting, P0. If conditions are more difficult or other mentioned
factors which tend to increase the possibility of DCI exist, select P1 or
even the most conservative P2. As a result the dive computer adjusts
its mathematical model according to the entered Personal Adjustment
Mode, giving shorter no-decompression times (see section 6.1. ”Operat-
ing Principles”, Table 6.1 and 6.2).
TABLE 3.5. PERSONAL ADJUSTMENT RANGES
The Vytec also allows experienced divers who are willing to accept a
greater level of risk to adjust the RGBM model. The default setting is
RGB100 which gives full (100%) RGBM effect. Suunto strongly advises
to use full RGBM effect. Statistically very experienced divers have less
incidents with DCI. The reason for this is unknown, but it is possible that
some level of physiological and or psychological accommodation can
take place when you are very experienced as a diver. Thus for certain
divers and diving conditions you may want to set attenuated (50%) RGBM
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41
mode (RGB50). See Table 3.6. To advise the diver that attenuated RGBM
has been set, the Diver Attention Symbol is constantly displayed (Table
3.3.)
TABLE 3.6. RGBM MODEL SETTINGS
3.9. ERROR CONDITIONS
The dive computer has warning indicators that alert the user to react
to certain situations that would significantly increase the risk of DCI.
If you do not respond to its warnings, the dive computer will enter an
Error Mode, indicating that the risk of DCI has greatly increased. If you
understand and operate the dive computer sensibly, it is very unlikely
you will ever put the instrument into the Error Mode.
OMITTED DECOMPRESSION
The Error Mode results from omitted decompression, i.e. when you stay
above the ceiling for more than three minutes. During this three-minute
period the Er warning is shown and the audible alarm beeps. After this,
the dive computer will enter a permanent Error Mode. The instrument
will continue to function normally if you descend below the ceiling within
this three-minute period.
Once in the permanent Error Mode only the ER warning is shown in
the center window. The dive computer will not show times for ascent or
stops. However, all the other displays will function as before to provide
information for ascent. You should immediately ascend to a depth of 3
to 6 m [10 to 20 ft] and remain at this depth until air supply limitations
require you to surface.
After surfacing, you should not dive for a minimum of 48 hours. During
the permanent Error Mode, the Er text will be displayed in the center
window and the Planning Mode will be disabled.
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42
4. MENU BASED MODES
To make yourself familiar with the menu based
functions, please use your Quick Reference
Guide supplied with the Vytec together with
the information in this chapter.
QUIT
OPTIONS
The main menu based functions are grouped
under 1) memory, 2) dive simulation and 3)
setting modes.
Fig. 4.1. Main menu based
Mode options. [3 MODE].
THE USE OF THE MENU BASED
FUNCTIONS
1. Activate the menu based modes by press-
ing once the SMART (MODE) button in the
Dive Mode (Fig. 4.1.).
SELECT
2. Scroll the mode options by pressing the
arrow up/down buttons. When scrolling
the options, the label and an equivalent
number are shown on the display (Fig. 4.2.
– 4.4.).
Fig. 4.2. Memory option.
[1 MEMORY].
3. Press the SMART (Select) button once to
select the desired option.
4. Scroll the submode options by pressing
the arrow up/down buttons. When scroll-
ing the options, the label and an equivalent
number are shown on the display.
SELECT
5. Select the desired option by pressing once
the SMART (Select) button. Repeat the
procedure, if there are more submodes.
Fig. 4.3. Simulation op-
tion. [2 SIMUL].
6. Depending on the mode, you are now able
to have a look at the memories, simulate
a dive, or make desired settings (use the
the arrow up/down buttons). The SMART
button is used to Quit or to confirm the set-
tings (OK).
SELECT
If you do not press any of the buttons for 5
minutes while in a Menu based mode, the in-
strument beeps and returns to the timekeeping
display. In the Simulation Mode, however, the
equivalent time is 60 minutes.
Fig. 4.4. Set option.
[3 SET].
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43
EXIT / QUIT!
By pressing the SMART button for more than 1 second, any menu based
function or submode can be quit and the dive computer will return directly
to the Dive Mode.
THE LIST OF THE MENU BASED MODES
1. MEMORIES AND DATA TRANSFER [1 MEMORY]
1. Logbook and Dive Profile Memory [1 LOGBOOK]
2. Dive History Memory [2 HISTORY]
3. Data Transfer and PC-Interface [3 TR-PC]
2. SIMULATION MODE [2 SIMUL]
1. Dive Simulator [1 SIMDIVE]
2. Dive Planning Simulator [2 SIMPLAN]
3. SET MODES [3 SET]
1. Dive Parameter Settings [1 SETDIVE]
1. Altitude Adjustment and Personal Adjustment Settings
[1 AdJ MODE]
2. Dive Time Alarm Setting [2 d ALARM]
3. Maximum Depth Alarm Setting [3 MAX DPTH]
4. Nitrox/Oxygen Settings [4 NITROX]
2. Setting Time [2 SET TIME]
1. Adjusting Time [1 AdJ TIME]
2. Adjusting Date [2 AdJ DATE]
3. Adjusting Daily Alarm [3 T ALARM]
3. Setting Preferences [3 SET PREF]
1. Backlight Setting [1 LIGHT]
2. Dive Computer Units Setting (Metric/Imperial) [2 UNITS]
3. Wireless Transmission Settings [3 HP]
4
Profile Recording Interval Setting [4 REC]
5. Dive Computer Model Settings (Air/Nitrox/Gauge)
[5 MODEL]
NOTE! The menu based modes cannot be activated until 5 minutes
after the dive.
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44
4.1. MEMORIES AND DATA
TRANSFER [1 MEMORY]
The memory options (Fig. 4.5.) for this dive
computer include the combined Logbook and
Dive Profile Memory (Fig. 4.6. – 4.12.), Dive
History Memory (Fig. 4.13. – 4.14.) and the
Data Transfer and PC-Interface functions (Fig.
4.15.).
QUIT
OPTIONS
The dive entry time and date is registered in
the Logbook memory. Always check before
diving that the time and date are correctly set,
especially after traveling between different
time zones.
Fig. 4.5. Memory options.
[3 MEMORY].
4.1.1. Logbook and Dive Profile
Memory [1 LOGBOOK]
SELECT
This instrument has a very sophisticated high
capacity Logbook and Profile Memory, with a
default data recording interval of 20 seconds.
Dives shorter than the recording interval are
not registered. You have the possibility to set
the recording interval to 10, 20, 30 or 60 sec-
onds (See Setting Preferences).
Fig. 4.6. Logbook option.
[1 LOGBOOK].
To enter the Logbook Memory Mode select
MODE- 1 MEMORY- 1 LOGBOOK.
For each dive there are four pages of logbook
dive information. Use the scroll buttons to
scroll the display between Logbook pages I,
II, III and IV. The data of the most recent dive
is shown first.
page 1
DIVE
SELECT
TIME
The logbook dives can be scrolled through
displaying only the first page of each dive,
or scrolling through the 4 different pages of a
dive.
Fig. 4.7. Logbook, page
I. Scroll different pages of
specific dive.
When at the first page of a dive use the MODE
button to change the scroll sequence. When
the arrow icon is next to the Mode button the
scroll button will scroll through the first page
only of each dive.
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45
When Select is displayed next to the mode but-
ton the scroll buttons will scroll through the four
pages of the selected dive.
page 2
DIVE
S
L
O
W
MAX
STOP ASC TIME
QUIT
O2%
The END text is displayed between the oldest
and most recent dive. (Fig. 4.12.)
OLF
°
C
DIVE TIME
Note that chronological sequence in the log-
book is determined by the date, not by the dive
number.
Fig. 4.8. Logbook, page II.
Main dive related data.
The following information will be shown on four
pages:
Page I, main display (Fig. 4.7.)
•
•
dive number in the dive series
dive entry time and date.
page 3
DIVE
Page II (Fig. 4.8.)
AVG
SURF
QUIT
•
•
dive number in the dive series
maximum depth
TIME
bar
(NOTE! Due to lower resolution, the reading
may differ from the maximum depth reading of
the Dive History up to 0.3 m [1 ft].)
•
•
•
total dive time
temperature at the maximum depth
Altitude Adjustment setting (not dis-
played in Gauge mode)
Personal Adjustment setting (not dis-
played in Gauge mode)
SLOW label, if the diver has violated
the maximum ascent rate
STOP label, if the Mandatory Safety
Stop was violated
ASC TIME label, if the dive was a
decompression stop dive
Diver attention symbol, if the symbol
was displayed when dive was started
downward pointing arrow, if the ceiling
was violated
oxygen percentage (in Nitrox mode for
primary gas MIX1)
maximum OLF during the dive (only in
Nitrox mode).
Fig. 4.9. Logbook, page
III. Surface interval time,
average depth and
consumed air indicated
by ÄP.
•
•
•
•
•
•
•
•
DIVE
QUIT
DIVE TIME
page 4
Fig. 4.10. Logbook, page
IV. Profile of specific dive.
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46
Page III (Fig. 4.9.)
•
•
•
•
dive number in the dive series
average depth
surface interval time before the dive
DP describing Cylinder pressure drop
during the dive (if wireless trans-
mission enabled (HP on)).
DIVE
SELECT
TIME
Page IV (Fig. 4.10.)
•
•
dive number in the dive series
the profile of the dive, automatic
scrolling during which:
logbook symbol blinks at the point
when the user has pressed the PLAN
button for Bookmark
O2% during the dive profile (in Nitrox
mode, O2% will change with gas
change)
Fig. 4.11. Logbook, page
I. Press SMART (Select)
button once to be able to
scroll between different
dives.
•
•
QUIT
•
•
blinking SLOW label when registered
blinking ASC TIME label when the
dive became a decompression dive.
Press the SMART (Select) button once to
change the scroll buttons to scroll the differ-
ent dives forward and backward (Fig. 4.11.).
Press the SMART (>Select) button again to
change function of the scroll buttons back
to scroll the different pages of the selected
dive. When searching the dives, only the
page 1 is shown. The END text is displayed
between the oldest and the most recent dive
(Fig. 4.12.).
Fig. 4.12. Logbook, end
of the memory. END text
is displayed between
oldest and the most
recent dive.
The memory will retain approximately the last
36 hours of dive time. After that, when new
dives are added, the oldest dives are deleted.
The contents of the memory will remain when
the battery is changed (assuming that the
replacement has been done according to the
instructions).
SELECT
Fig. 4.13. Dive History
Memory Mode.
[2 HISTORY].
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47
DIVE PROFILE MEMORY [PROF]
The scrolling of the profile will start automati-
cally when the Logbook page IV (PROF) is
entered.
DIVE
MAX
QUIT
With the default setting, the dive profile is re-
corded and displayed in 20-second increments
with each display being shown for about three
seconds. The depths shown are the maximum
values of each interval.
DIVE TIME
Fig. 4.14. Dive History
information. Total number
of dives, dive hours and
maximum depth.
Pressing any button stops the scrolling of the
profile.
NOTE! Several repetitive dives are consid-
ered to belong to the same repetitive dive se-
ries if the no-flying time has not ended. See
”Dive Numbering” in section 3.6.2. for further
information.
4.1.2. Dive History Memory
[2 HISTORY]
SELECT
The Dive History is a summary of all the dives
recorded by the dive computer. To enter the
Dive History Memory Mode select MODE- 1
MEMORY- 2 HISTORY (Fig. 4.13.).
Fig. 4.15. Data Transfer
mode. [3 TR-PC].
The following information will be shown on the
display (Fig. 4.14.):
•
•
the maximum depth ever reached
the total accumulated dive time in
hours
•
the total number of dives.
The Dive History Memory can hold a maximum
of 999 dives and 999 diving hours. When these
maximum values are reached, the counters will
start again from zero.
QUIT
OPTIONS
NOTE! The maximum depth can be reset to
0.0 m [0 ft] using the optional PC-Interface unit
and Suunto Dive Manager software.
Fig. 4.16. Dive Simulation
options. [2 SIMUL].
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48
4.1.3. Data Transfer and PC-Interface [3 TR-PC]
The instrument can be connected to an IBM compatible personal com-
puter (PC), using the optional PC-Interface and software. With the PC-
Interface unit, dive data from the dive computer can be downloaded to
a PC. The PC software can be used for educational and demonstration
purposes, for planning dives, and for keeping a complete record of your
dive history with the instrument. Additional Logbook data can also be
added. Paper copies of your dive log and profiles can easily be printed.
The data transfer is carried out using the connector on the bottom of the
unit. The following data is transferred to the PC:
•
•
•
•
•
•
depth profile of the dive
dive time
preceding surface interval time
dive number
Altitude and Personal adjustment settings
oxygen percentage settings and maximum OLF (in Nitrox
mode)
•
•
tissue calculation data
temperature at the beginning of the dive, maximum depth and
end of the dive
•
•
dive entry time (year, month, day and time)
additional dive information (e.g. SLOW and Mandatory Safety
Stop violations, Diver Attention Symbol, Bookmark, Surfaced
Mark, Decompression Stop Mark, Ceiling Error Mark,gas
change)
•
•
•
dive computer serial number
personal 30 character information
cylinder pressure at the beginning and at the end of the dive (i.e.
pressure drop DP during dive)
•
surface air consumption.
Using the PC software, you are able to enter setup options such as:
•
input a personal, 30 character field into the Vytec (i.e. your
name)
•
reset the Dive History’s max depth to zero.
It is also possible to manually add comments and other personal informa-
tion to the PC based dive data files. The PC-Interface package comes
complete with the interface unit, the software and an installation guide.
To enter the Data Transfer mode select MODE- 1 MEMORY- 3 TR – PC
(Fig. 4.15.).
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49
NOTE! While in the Data Transfer mode, the
connector/water contacts are used only for the
data transfer. The Dive Mode IS NOT automati-
cally activated if the contacts are submerged.
SELECT
After you have finished the data transfer, press
the SMART (Quit) to exit Data Transfer mode.
If a button is not pressed or no data is trans-
ferred within 5 minutes, the instrument beeps
and returns to the timekeeping display auto-
matically.
Fig. 4.17. Dive Simulator
mode. [1 SIMDIVE].
4.2. SIMULATION MODE
[2 SIMUL]
The Simulation mode can be used to acquaint
yourself with the features and displays of the
instrument before diving, to plan dives in ad-
vance, for demonstration or education purpos-
es, or just for pleasure.
m
QUIT
bar
DIVE TIME
The dive computer has two simulation modes
(Fig. 4.16.):
•
•
The DIVE SIMULATOR (Fig. 4.17.)
The DIVE PLANNING SIMULATOR
(Fig. 4.19.).
Fig. 4.18. Selected
Dive Simulator mode.
Descend by pressing
the arrow down (TIME)
button and ascend by
pressing the arrow up
(PLAN) button.
In Simulation Mode, time moves four times
faster than real time (when diving), i.e., 15s
= 1min.
4.2.1. Dive Simulator
[1 SIMDIVE]
The Dive Simulator mode is an excellent tool
for becoming familiar with the dive computer
and planning your dives. Suunto recommends
using the dive simulator to run through different
dive scenarios. The Dive Simulator will allow
you to “perform” dive profiles of your choice
and see what the display would look like during
an actual dive. This includes basic dive infor-
mation, as well as audible and visual warn-
ings. Cylinder pressure drop is simulated with
a constant, depth dependent consumption. If
SELECT
Fig. 4.19. Dive Planning
Simulator mode.
[2 SIMPLAN].
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50
multiple gas mixes are set they will be changed
as soon as allowed maximum depth is reached
upon ascent and in the order of: MIX1, MIX2
and MIX3
SURF
TIME
OK
To enter the Dive Simulator mode select
MODE- 2 SIMUL- 1 SIMDIVE (Fig. 4.17. and
4.18.).
4.2.2. Dive Planning Simulator
[2 SIMPLAN]
Fig. 4.20. Selected Dive
Planning Simulator
mode. Add desired
surface interval incre-
ment (to present shown
surface interval) by
pressing TIME and PLAN
buttons. This display is
only shown
The Dive Planning Simulator mode shows you
the present no-decompression limits. In this
mode, you are also able to add the desired
surface interval increment to present surface
interval time, which allows you to plan your
dives in advance.
for repetitive dives.
This mode is also used to add the desired
surface intervals for dive simulations. Add the
desired surface interval increment to present
surface interval by pressing the arrow down
(TIME) and arrow up (PLAN) buttons.
DIVE
MAX
QUIT
NO DEC TIME
NOTE! This display is only shown for repeti-
tive dives.
To enter the Dive Planning Simulator mode
select MODE- 2 SIMUL- 2 SIMPLAN (Fig.
4.19.).
Fig. 4.21. Dive Planning
Simulation.
NOTE! The Dive Planning Simulator mode is
disabled in Gauge mode and in Error mode
(see section 3.9. ”Error Conditions”).
4.3. SET MODES [3 SET]
QUIT
The Set Modes (Fig. 4.22.) are divided into
three submodes for setting the dive-related
parameters, time-related parameters and your
personal preferences.
OPTIONS
Fig. 4.22. Setting Op-
tions. [3 SET].
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51
4.3.1. Dive Parameter Settings
[1 SET DIVE]
To enter the Dive Parameter Setting Mode
select MODE- 3 SET- 1 SET DIVE. The Dive
Parameter Setting mode has two to four op-
tions depending on the dive computer mode.
In Gauge mode there are two options, in Air
mode three options and in Nitrox mode four
options.
OK
Fig. 4.23. Setting
Altitude adjustment.
Press scroll buttons to
change altitude mode.
4.3.1.1 Altitude Adjustment,
Personal Adjustment, RGBM Set-
tings and Safety Stop/ Deep Stop
[1 AdJ MODE]
The current Altitude and Personal Adjustment
modes are shown when diving and at the sur-
face. If the mode does not match the altitude
or personal conditions (see section 3.8. “High
Altitude Dives and Personal Adjustment”), it
is imperative that you enter the correct selec-
tion before diving. Use the Altitude Adjustment
to select the correct altitude mode. Use the
Personal Adjustment to add an extra level of
conservatism.
OK
Fig. 4.24 Setting
Personal adjustment.
Press scroll buttons to
change personal mode.
For certain divers and diving conditions you
may want to set attenuated RGBM mode When
this selection is made it is indicated with a con-
tinuously displayed Diver Attention Symbol.
The options are full RGBM effects (RGB100),
and attenuated RGBM (RGB50).
The deepstop setting allows the user to choose
between traditional safety stops or deep stops.
If deep stops are set to OFF, traditional safety
stop calculation is used. If set to ON itera-
tive Deepstops will be prompted instead. The
length of the individual deepstops can be set
to 1 or 2 minutes.
OK
To enter the Altitude Adjustment, Personal Ad-
justment and RGBM effect Setting mode, se-
lect MODE- 3 SET- 1 SET DIVE- 1AdJ MODE.
Fig. 4.25 Setting RGBM
adjustment. Press scroll
buttons to change setting.
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52
Now you are able to select from the three alti-
tude modes (Fig. 4.23.) and the three personal
modes (Fig. 4.24.) and the two RGBM effect,
full normal or limited attenuated, modes (Fig.
4.25.) and safety stop/deepstop 1 or 2 minutes
(Fig. 4.25b).
4.3.1.2. Dive Time Alarm Setting
[2 d ALARM]
Fig. 4.25b. Setting Safe-
tystop/Deepstop. Press
scroll buttons to change
safety/deep stop
The instrument has one Dive Time Alarm Set-
ting, which can be used for several purposes
to add to your diving safety. The alarm can
be set, for example, to your planned bottom
time.
To enter the Dive TimeAlarm Setting Mode se-
lect MODE- 3 SET- 1 SET DIVE- 2 d ALARM.
The Dive Time alarm can be set on or off and
the time from 1 to 999 minutes.
OK
DIVE TIME
4.3.1.3. Maximum Depth Alarm
Setting [3 MAX DPTH]
You can set one depth alarm in the dive com-
puter.
Fig. 4.26. Setting Dive
Time Alarm. Press scroll
buttons to change alarm
on/off and to set dive time
value.
To enter the Maximum Depth Alarm Setting
select MODE- 3 SET- 1 SET DIVE- 3 MAX
DEPTH .
The depth alarm is set to 40 m [131 ft] at the
factory, but you are able to adjust it according
your personal preference or switch it off. The
depth range can be set from 3.0 m to 100 m
[9 ft to 328 ft] (Fig. 4.27.).
m
MAX
OK
4.3.1.4. Nitrox/Oxygen Settings
[4 NITROX]
If set to the Nitrox mode, the correct oxygen
percentage of the gas in your cylinder (and
additional gases) must always be entered
into the computer to ensure correct nitrogen
and oxygen calculations.Also, in Nitrox mode,
the oxygen partial pressure limit must be set.
Fig. 4.27. Setting Maxi-
mum Depth Alarm. Press
scroll buttons to change
alarm on/off and to set
maximum depth value.
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53
When in the Nitrox Setting mode the equiva-
lent allowed maximum depth based on the
chosen setting will also be displayed. Settings
for additional mixes (MIX2, MIX3) are made
similarly but with the selection of “ON” or “OFF”
for these.
m
PO2
O2%
OK
In order to minimise risk of error during the dive
it is highly recommended that the mixes are set
with proper order. This means that as the mix
number rises so does oxygen content and this
is the order they are usually used during the
dive. Before a dive set “on” only the mixes you
actually have available and remember to check
the set values so they are correct.
Fig. 4.28. Setting primary
gas mix (MIX1). Oxygen
percentage is 32%, oxy-
gen partial pressure limit
is 1.4 bar. The equivalent
maximum depth is
displayed as 32.8 m [107
ft]. Press scroll buttons to
change oxygen percent-
age and to set oxygen
partial setting value. Ac-
cept settings by pressing
MODE (OK).
To enter the Nitrox/Oxygen Setting Mode se-
lect MODE- 3 SET- 1 SET DIVE- 4 NITROX.
The default oxygen percentage (O2%) setting
is 21% (air) and oxygen partial pressure (PO2)
setting 1.4 bar (Fig. 4.28.).After entering values
for MIX1 you can enable/disable and set addi-
tional gas mixes MIX2 and MIX3 (Fig. 4.29).
NOTE! If only MIX 1 is enabled (MIX2/3 set OFF
and set to 21%), MIX1 will revert to default set-
tings (21% O2 and PO2 1.4 bar) after approxi-
mately 2 hours. If either MIX2 or MIX3 have
oxygen content greater than 21% or are set ON,
settings for all mixes are stored until changed.
OK
4.3.2. Setting Time [2 SET TIME]
To enter the Time Setting Mode select MODE-
3 SET- 2 SET TIME. The Time Setting mode
has three options: 1 Time, 2 Date and 3 Daily
Time Alarm.
Fig. 4.29. Setting additional
gas mixes (MIX2, MIX3).
MIX 2 is turned off. Press
scroll buttons to enable/dis-
able MIX2. Press MODE
(OK) to accept settings.
4.3.2.1. Adjusting Time
[1 AdJ TIME]
To enter the Time Setting Mode select MODE-
3 SET- 2 SET TIME- 1AdJ TIME.After entering
this mode you are able to select between 12 h
and 24 hour time formats and set the correct
time by using the SMART (MODE) and scroll
buttons (Fig. 4.30.).
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54
4.3.2.2. Adjusting Date
[2 AdJ DATE]
To enter the Date Setting Mode select MODE-
3 SET- 2 SET TIME- 2 AdJ DATE. After enter-
ing this mode you are able to set the correct
year, month and day in this order (Fig. 4.31.).
OK
NOTE!
•
The day of the week is automatically
calculated in accordance with the date.
Fig. 4.30. Adjusting Time.
•
The date can be set within the range
of Jan 1, 1990 to Dec. 31, 2089.
4.3.2.3. Adjusting Daily Alarm
[3 T ALARM]
You can set one daily alarm in the dive com-
puter. When the daily alarm activates, the
time symbol blinks for 1 minute and the alarm
sounds for 24 seconds. The alarm is given at
the preset time each day. Press any button to
stop the audible alarm, after it has activated.
OK
Fig. 4.31. Adjusting Date.
To enter the DailyAlarm Setting Mode to adjust
the alarm select MODE- 3 SET- 2 SET TIME-
3 T ALARM. After entering this mode you are
able to set the desired alarm time (Fig. 4.32.).
4.3.3. Setting Preferences
[3 SET PREF]
OK
To enter the Setting Preferences Mode select
MODE- 3 SET- 3 SET PREF. The Setting Pref-
erences mode has five options: 1 Light, 2Units,
3 HP, 4 REC and 5 Model.
4.3.3.1. Backlight Setting
[1 LIGHT]
Fig. 4.32. Adjusting
Daily Alarm.
In the Backlight Setting mode the backlight can
be turned off or on and the on time can be set
to be 5 to 30 seconds (Fig. 4.33.).
To enter the Backlight Setting Mode select
MODE- 3 SET- 3 SET PREF- 1 LIGHT.
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55
NOTE! When the backlight turned OFF, it does
not illuminate when an alarm is given.
4.3.3.2. Dive Computer Units
Setting [2 UNITS]
OK
TIME
To enter the Dive Computer Units Setting
mode, select MODE- 3 SET- 3 SET PREF- 2
UNITS. This will enable you to choose between
metric and imperial units (Fig. 4.34.).
Fig. 4.33. Setting
Backlight On Time. Press
scroll buttons to change
backlight on/off and to set
time value.
4.3.3.3. Wireless Transmission
Settings [3 HP]
The wireless transmission can be set “ON” or
“OFF” depending on if the optional wireless
pressure transmitter is used or not. No cylinder
pressure related data is shown or data recep-
tion made when this selection is “off”.
ft
m
You can set the secondary cylinder pressure
alarm point. The 50 bar alarm is fixed and can-
not be changed. The 35 bar secondary alarm
pressure can be set in the range 10 –200bar.
To set the wireless transmission settings select
MODE- 3 SET- 3 SET PREF- 3 HP
OK
°
C
°
F
Fig. 4.34. Setting Metric/
Imperial units.
4.3.3.4. Profile Sample Rate
Setting [4 REC]
You can set dive profile sample rate to 10, 20,
30 or 60 seconds. To adjust the sampling rate
select MODE- 3 SET- 3 SET PREF- 4 REC.
The factory default setting is 20 seconds.
4.3.3.5. Dive Computer Model
Setting [5 MODEL] –
OK
AIR/NITROX/GAUGE
In the Dive Computer Model Setting mode the
dive computer can be set to be an AIR computer,
NITROX computer or a depth GAUGE with a timer
(Fig. 4.35.).
Fig. 4.35. Setting Dive
Computer model.
To enter the Dive Computer Model Setting mode
select MODE- 3 SET- 3 SET PREF- 5 MODEL.
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5. CARE AND MAINTENANCE
This SUUNTO dive computer is a sophisticated precision instrument.
Though designed to withstand the rigors of scuba diving you must treat
it with proper care and caution as any other precision instrument.
5.1. IMPORTANT INFORMATION
WATER CONTACTS AND PUSH BUTTONS
Contamination or dirt on the water contacts/connector or push buttons
may prevent the automatic activation of the Dive Mode and cause prob-
lems during the data transfer. Therefore, it is important that the water
contacts and push buttons are kept clean. If the water contacts of the
instrument are active (AC-text remains on display) or the Dive Mode
activates on its own, the reason for this is probably contamination or
invisible marine growth that may create an unwanted electric current
between the contacts. It is important that the dive computer is carefully
washed in fresh water after the day’s diving is completed. The contacts
can be cleaned with fresh water and, if necessary, a mild detergent and
a soft brush. Sometimes it might be necessary to remove the instrument
from the protective boot for cleaning.
5.2. CARE OF YOUR DIVE COMPUTER
•
NEVER try to open the case of the dive computer.
•
Service your dive computer every two years or after 200 dives
(whichever comes first) by an authorized dealer or distributor.
This service will include a general operational check, replacement
of the battery, and water resistance check. The service requires
special tools and training. Therefore, it is advisable to contact an
authorized SUUNTO dealer or distributor for biennial service. Do
not attempt to do any service that you are not sure about how to
do.
•
•
•
•
Should moisture appear inside the case or battery compartment
have the instrument checked immediately by your SUUNTO
dealer or distributor.
Should you detect scratches, cracks or other such flaws on the
display that may impair its durability, have it replaced immediately
by your SUUNTO dealer or distributor.
Check the spring bars holding the strap and the buckle for flaws. If
the flexibility of the spring bars has reduced, have them replaced
immediately by your SUUNTO dealer or distributor.
Wash and rinse the unit in fresh water after every use.
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57
•
Protect the unit from shock, extreme heat, direct sunlight,
and chemical attack. The dive computer cannot withstand the
impact of heavy objects like scuba cylinders, nor chemicals like
gasoline, cleaning solvents, aerosol sprays, adhesive agents,
paint, acetone, alcohol etc. Chemical reactions with such agents
will damage seals, case and finish.
•
•
Store your dive computer in a dry place when you are not using it.
The dive computer will display a battery symbol as a warning
when the power gets too low. When this happens, the instrument
should not be used until the battery has been replaced (see also
section 3.1.1. ”Activation and Prechecks”).
•
Do not fasten the strap of your dive computer too tightly. You
should be able to insert your finger between the strap and your
wrist. Shorten the strap by cutting it, if you do not expect to need
the extra length of it.
5.3. MAINTENANCE
The instrument should be soaked, thoroughly rinsed with fresh water,
then dried with a soft towel after each dive. Make sure that all salt crystals
and sand particles have been flushed out.
Check the display and the transparent battery compartment cover for
possible moisture or water. DO NOT use the dive computer, if you de-
tect any moisture or water inside. In order to limit corrosion damage
remove the battery and moisture from the battery compartment. Contact
an authorized Suunto dealer for battery replacement or other needed
service.
CAUTION!
•
•
Do not use compressed air to blow water off the unit.
Do not use solvents or other cleaning fluids that might cause
damage.
•
Do not test or use the dive computer in pressurized air.
5.4. WATER RESISTANCE INSPECTION
Water resistance of the unit must be checked after replacement of the
battery or after other service operations. The check requires special
equipment and training.
You must frequently check the transparent battery compartment cover
and the display for any sign of leaks. If you find moisture inside your dive
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58
computer, there is a leak.Aleak must be corrected without delay, as mois-
ture will seriously damage the unit, even beyond repair. SUUNTO does
not take any responsibility for damage caused by moisture in the dive
computer, if the instructions of this manual are not carefully followed.
In case of a leak, immediately take the dive computer to an authorized
SUUNTO dealer or distributor.
5.5. BATTERY REPLACEMENT
5.5.1. Computer battery
NOTE! It is advisable to contact an authorized Suunto dealer for bat-
tery replacement. It is imperative that the change is made in a proper
manner to avoid any leakage of water into the battery compartment or
computer.
CAUTION!
Defects caused by improper battery installation are not covered by
the warranty.
CAUTION!
When the battery is changed all nitrogen and oxygen uptake data is
lost. Therefore, the no-flying time shown by the computer should have
reached zero or you must wait for 48 hours or preferably even 100
hours between dives before you may dive again.
All history and profile data, as well as the altitude, personal and alarm set-
tings, will remain in the dive computer memory after the battery change.
However, the clock time and time alarm setting is lost. In the NITROX
Mode the Nitrox settings are also reverted back to default settings (MIX1
21 % O2, 1.4 bar PO2, MIX2/MIX3 off).
When working with the battery compartment, cleanliness is extremely
important. Even the smallest dirt particles may cause a leakage when
you dive.
BATTERY KIT
The battery kit includes a 3.0 V coin type lithium cell battery and a lubri-
cated O-ring. When handling the battery do not make contact with both
of the poles at the same time. Do not touch the surfaces of the battery
with your bare fingers.
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59
TOOLS REQUIRED
•
•
•
A flat 1.5 mm screwdriver or a special tool for spring bars (K5857).
Soft cloth for cleaning.
Needlenose pliers or large screwdriver for turning securing ring.
BATTERY REPLACEMENT
The battery and the buzzer are located in the back of the instrument in
a separate compartment, the parts of which are shown in Fig. 5.1. To
change the battery, follow the procedure below:
1. Remove the computer from the console or boot.
Wrist model:
•
Pull off the boot. Remove it first from the front end with the longer
part of the strap.
•
Disassemble the shorter part of the strap with a flat 1.5 mm
screwdriver or a special tool for spring bars. The longer part of the
strap may stay on but removing it may ease the work later on.
Console model:
Remove the dive computer from the console according the
instructions of the console.
•
2. Thoroughly rinse and dry the computer.
3. Open the securing ring of the battery compartment lid by pushing it
down and rotating it clockwise. You may use a pointed nose pliers
or a small screwdriver as an aid in the rotating. Put the pliers ends
into the holes of the securing ring or the screwdriver onto the side
of the right tooth on the ring (Fig. 5.2) and turn the ring clockwise.
Care should be taken not to damage any of the parts.
4. Remove the ring.
5. Carefully remove the lid with the beeper attached to it. The lid can be
removed by pressing with your finger on the outermost edge of the
lid while at the same time pulling with your nail at the opposite side.
Do not use sharp metal objects as they might damage the O-ring or
the sealing surfaces.
6. Remove the O-ring and the battery retainer.
7. Carefully remove the battery. Do not damage the electrical contacts
or the sealing surface.
Check for any traces of flooding, particularly between the beeper and
the lid, or for any other damage. In case of a leak or any other damage,
bring the dive computer to an authorized SUUNTO dealer or distributor
for check and repair.
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60
8. Check the condition of the O-ring; a defective O-ring may indicate
sealing or other problems. Dispose the old O-ring, even if it seems
to be in good condition.
9. Check that the battery compartment, battery holder and lid are clean.
Clean with soft cloth if necessary.
10. Gently insert the new battery in the battery compartment. Check the
polarity of the battery: the “-” mark should point toward the bottom
of the compartment and the “+” mark upwards.
11. Reinstall the battery retainer in its correct position.
12. Check that the new lubricated O-ring is in good condition. Put it in
the right position on the battery compartment. Be very careful not to
get any dirt on the o-ring or its sealing surfaces.
13. Carefully press the lid onto the battery compartment with your thumb.
It is better to press down the lid down one side first, this minimizes
entrapped air and it is thus easier to hold down the lid. Make sure
that the O-ring is not at any point protruding out on the edge.
14. Put your other thumb through the locking ring. Press this thumb
firmly against the lid and release the other one. Make sure that the
lid is pressed completely down!
15. Turn the locking ring counterclockwise with your free thumb and
fingers until it snaps into its locked position.
16. The dive computer should now active it’s timekeeping mode and
show time 18:00 [6:00 PM] and date SA 01,01. Activate the instru-
ment. Check that:
•
•
•
•
All display segments work.
The low battery warning is off.
The buzzer beeps and backlight works.
All the settings are correct. Reset if necessary.
17. Install the dive computer back into the console or boot and reas-
semble the strap. The instrument is now ready for use.
Wrist model:
•
Assembling into the boot: First insert the longer strap in its hole in
the front of the boot and then the dive computer into its cavity in the
boot starting at the back end. Then snap also the long strap end of
the instrument into the boot. Stretch the boot as needed.
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61
•
Assemble the shorter part of the strap. Use the spring bar tool or
small screwdriver to compress the spring bars. Make sure that the
spring bars get fully seated so they will not come off their holes.
Console model:
Refit the dive computer in the console according the instructions of
the console.
•
CAUTION!
Check after the first dives for possible moisture under the transparent
battery compartment lid, indicating a leak.
Complete Strap
(V5841)
Securing Ring
(V5844)
Short Strap with
buckle (V 5841)
Battery Compartment
Lid with buzzer (V5843)
Spring Bar
(K5588)
O-Ring
(K5664)
Battery Retainer
(V5842)
Long Strap
(K5592)
Battery
(K5597)
Vytec Boot K5534
Fig. 5.1 Instrument parts.
The code after the name stands for spare part order number.
Fig. 5.2 Opening of the securing ring.
5.5.2. Wireless Transmitter Battery Replacement
NOTE! It is advisable to contact an authorized Suunto dealer for trans-
mitter battery replacement. It is imperative that the change is made in a
proper manner to avoid any leakage of water into the transmitter.
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62
CAUTION!
Defects caused by improper battery installation are not covered by
the warranty.
BATTERY KIT
The transmitter battery kit includes a 3.0 V CR ˚ AA lithium cell battery
and a lubricated O-ring. When handling the battery do not make contact
with both of the poles at the same time. Do not touch the metal surfaces
of the battery with your bare fingers.
TOOLS REQUIRED
•
•
A Phillips head screwdriver
Soft cloth for cleaning.
TRANSMITTER BATTERY REPLACEMENT
To change the transmitter battery, follow the procedure below:
1. Remove the transmitter from the regulator HP port
2. Unscrew and remove the four Phillips screws on the back of the
transmitter
3. Pull off the transmitter cover
4. Carefully remove the o-ring. Be careful not to damage the sealing
surfaces.
5. Carefully remove the battery. Do not touch the electrical contacts or
the circuit board
Check for any traces of flooding, or for any other damage. In case of a
leak or any other damage, bring the transmitter to an authorized SU-
UNTO dealer or distributor for check and repair.
6. Check the condition of the O-ring; a defective O-ring may indicate
sealing or other problems. Dispose the old O-ring, even if it seems
to be in good condition.
7. Check that the o-ring groove and the sealing surface of the cover
the are clean. Clean with soft cloth if necessary.
8. Gently insert the new battery in the battery compartment. Check the
polarity of the battery: the “+” mark should point toward the top of
the compartment and the “-” mark towards the bottom.
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63
NOTE! It is imperative to wait at least 30 seconds before re-installing
the transmitter battery.
When the battery is re-installed the transmitter sends an overpressure
(“---“) signal on code 12 for 10 seconds, after which it goes to normal
operation, and shuts down after 5min.
9. Check that the new lubricated O-ring is in good condition. Put it in
the right position in the o-ring groove. Be very careful not to get any
dirt on the o-ring or its sealing surfaces.
10. Carefully put the transmitter cover into place. Note that the cover
will only fit in one position. Match the three slots on the inside of the
cover with the three ledges below the battery.
11. Screw the four screws back into place.
Fig. 5.3 Wireless transmitter parts. The code stands for spare part order number.
6. TECHNICAL DESCRIPTION
6.1. OPERATING PRINCIPLES
NO-DECOMPRESSION LIMITS
The no-decompression limits displayed by the dive computer for the first
dive to a single depth (see Table 6.1. and Table 6.2.), are slightly more
conservative than those permitted by the U.S. Navy tables.
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64
TABLE 6.1. NO-DECOMPRESSION TIME LIMITS (MIN) FOR VARI-
OUS DEPTHS (M) FOR THE FIRST DIVE OF A SERIES
Personal Mode / Altitude Mode
Depth
P0/A0 P0/A1 P0/A2 P1/A0 P1/A1 P1/A2 P2/A0 P2/A1 P2/A2
[m]
9
12
15
18
21
24
27
30
33
36
39
42
45
- -
124
72
52
37
29
23
18
13
11
9
163
89
57
39
29
24
18
14
11
9
130
67
43
30
23
19
15
12
9
8
6
5
5
163
89
57
39
29
24
18
14
11
9
130
67
43
30
23
19
15
12
9
8
6
5
5
96
54
35
25
20
16
12
9
8
6
5
4
130
67
43
30
23
19
15
12
9
8
6
5
5
96
54
35
25
20
16
12
9
8
6
5
4
75
45
29
21
15
12
9
7
6
5
4
8
6
5
7
6
5
7
6
4
3
4
4
TABLE 6.2. NO-DECOMPRESSION TIME LIMITS (MIN) FOR VARI-
OUS DEPTHS [FT] FOR THE FIRST DIVE OF A SERIES
Personal Mode / Altitude Mode
Depth
P0/A0 P0/A1 P0/A2 P1/A0 P1/A1 P1/A2 P2/A0 P2/A1 P2/A2
[ft]
30
40
50
60
70
- -
120
69
51
36
28
22
17
13
10
9
160
86
56
38
29
23
18
14
11
9
127
65
41
29
23
19
15
11
9
8
6
5
4
160
86
56
38
29
23
18
14
11
9
127
65
41
29
23
19
15
11
9
8
6
5
4
93
53
34
25
20
15
11
9
7
6
5
4
127
65
41
29
23
19
15
11
9
8
6
5
4
93
53
34
25
20
15
11
9
7
6
5
4
73
43
28
20
15
11
9
7
6
5
4
80
90
100
110
120
130
140
150
7
6
5
7
6
5
7
6
4
3
4
4
ALTITUDE DIVING
The atmospheric pressure is lower at high altitudes than at sea level.
After traveling to a higher altitude, the diver will have additional nitrogen
in his body, compared to the equilibrium situation at the original altitude.
This “additional” nitrogen is released gradually in time and equilibrium
is reached. It is recommended that you acclimate to the new altitude by
waiting at least three hours before making a dive.
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Before high altitude diving, the instrument must be set to the Altitude
Adjustment mode to adjust the calculations for the new altitude. The
maximum partial pressures of nitrogen allowed by the mathematical
model of the dive computer are reduced according to the lower ambient
pressure.
As a result, the allowed no-decompression stop limits are considerably
reduced.
SURFACE INTERVALS
The dive computer requires a minimum surface interval of 5 minutes
between dives. If a surface interval is shorter than 5 minutes, the next
dive is treated as a continuation of the previous dive.
6.2. SUUNTO REDUCED GRADIENT BUBBLE
MODEL (RGBM)
The Suunto Reduced Gradient Bubble Model (RGBM) is a modern algo-
rithm for predicting both dissolved and free gas in the tissues and blood
of divers. It was developed in a co-operation between Suunto and Bruce
R. Wienke BSc, MSc. PhD. It is based on both laboratory experiments
and diving data, including data from DAN.
It is a significant advance on the classical Haldane models, which do not
predict free gas (microbubbles). The advantage of Suunto RGBM is ad-
ditional safety through its ability to adapt to a wide variety of situations.
Suunto RGBM addresses a number of diving circumstances outside the
range of just dissolved gas models by:
•
•
•
•
Monitoring continuous multiday diving
Computing closely spaced repetitive diving
Reacting to a dive deeper than the previous dive
Adapting for rapid ascents which produce high micro-bubble
(silent-bubble) build-up
•
Incorporating consistency with real physical laws for gas
kinetics.
Suunto RGBM Adaptive decompression
The SUUNTO RGBM algorithm adapts its predictions of both the effects
of micro-bubble build-up and adverse dive profiles in the current dive
series. It will also change these calculations according to the personal
adjustment you select.
The pattern and speed of decompression at the surface is adjusted
according to micro-bubble influence.
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Also on repetitive dives adjustment may be applied to the maximum al-
lowable nitrogen overpressure in each theoretical tissue group.
Depending on circumstances Suunto RGBM will adapt the decompres-
sion obligations by doing any or all of the following:
•
•
•
•
Reducing no-decompression stop dive times
Adding Mandatory Safety Stops
Increasing decompression stop times
Advising an extended surface interval (Diver Attention symbol).
DiverAttention Symbol –Advice to Extend Surface Interval. If attenuated
RGBM (RGB50) has been set, the Diver Attention Symbol will also be
shown to indicate it.
Some patterns of diving cumulatively add a higher risk of DCI, e.g. dives
with short surface intervals, repetitive dives deeper than earlier ones,
multiple ascents, substantial multiday diving. When this is detected in ad-
dition to adapting the decompression algorithm the Suunto RGBM model
will in some circumstances also advise, with the Diver Attention Symbol
(review chapter 3.6) that the diver extend the surface interval.
6.3. OXYGEN EXPOSURE
The oxygen exposure calculations are based on currently accepted expo-
sure time limit tables and principles. In addition to this the dive computer
uses several methods to conservatively estimate the oxygen exposure.
These include for example:
•
•
•
•
the displayed oxygen exposure calculations are upped to the
next higher percentage value
for recreational scuba diving, the recommended upper limit of
1.4 bar PO2 is used as a default
the CNS% limits up to 1.6 bar are based on 1991 NOAA Diving
Manual limits
the OTU monitoring is based on the long-term daily tolerance
level and the recovery rate is reduced
Oxygen related information displayed by the dive computer is also de-
signed to ensure all warnings and displays in the appropriate phases of
a dive. E.g. the following information will be shown before and during a
dive, when the computer is set in Nitrox mode:
•
•
•
the selected O2%
the color-coded OLF% bar graph for either CNS% or OTU%
audible alarms are given and the OLF bar graph starts to blink
when the 80% and 100% limits are exceeded
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67
•
•
•
the blinking of the bar graph stops, when the PO2 is below 0.5
bar
audible alarms are given and the actual PO2 value blinks when
it exceeds the preset limit
in dive planning the maximum depth according to the O2% and
maximum PO2 selected.
6.4. TECHNICAL SPECIFICATION
Dimensions and weight:
Vytec:
•
•
•
Diameter:
Thickness:
Weight:
61mm [2.4in].
28mm [1.1in].
68g [2.4 oz].
Transmitter:
•
•
•
•
Max. diameter: 40 mm [1.57 in].
Length:
Weight:
80mm [3.15 in].
118g [4.16 oz].
Rated working pressure: 300 bar [4000 psi], maximum
allowed pressure 360 bar [5000 psi].
•
Display resolution:1 bar [1 psi].
Depth Gauge:
•
•
Temperature compensated pressure sensor.
Salt water calibrated, in fresh water the readings are about 3%
smaller (calibrated complying with prEN 13319).
•
•
Maximum depth of operation: 80 m [262 ft] (complying with
prEN 13319).
Accuracy: ± 1% of full scale or better from 0 to 80 m [262 ft] at
20°C [68°F] (complying with prEN 13319).
•
•
Depth display range: 0 … 150 m [492 ft].
Resolution: 0.1 m from 0 to 100 m [1 ft from 0 to 328 ft].
Temperature display:
•
•
•
Resolution:
Display range:
Accuracy:
1°C [1.5°F].
-9 ... +50°C [-9 ... +122°F].
± 2°C [± 3.6°F] within 20 minutes of
temperature change.
Calendar Clock:
•
•
Accuracy:
12/24 h display.
± 25 s/month (at 20°C [68°F]).
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Other displays:
•
Dive time:
0 to 999 min, counting starts and stops
at 1.2 m [4 ft] depth.
•
•
•
•
•
•
Surface time:
Dive counter:
No-decompression time: 0 to 199 min (- - after 199).
Ascent time:
Ceiling depths:
Air time:
0 to 99 h 59 min.
0 to 99 for repetitive dives.
0 to 99 min (- - after 99).
3.0 to 100 m [10 to 328 ft].
0 to 99 min (- - after 99).
Displays only in Nitrox mode:
•
•
Oxygen%: 21 - 99.
Oxygen partial pressure display: 1.2 - 1.6 bar depending on the
limit setting.
•
Oxygen Limit Fraction: 1 - 110% with 10% resolution (bar
graph).
Logbook/Dive Profile Memory:
Recording interval: 20 seconds (the recording interval can be set to
10s, 30s or 60s with the optional PC-interface unit and software),
records the maximum depth of each interval.
•
Memory capacity: approximately 36 hours of diving with 20
seconds recording interval.
•
Depth accuracy: 0.3 m [1 ft].
Operating Conditions
•
•
•
Normal altitude range: 0 to 3000 m [10000 ft] above sea level.
Operating temperature: 0°C to 40°C [32°F to 104°F].
Storage temperature: -20°C to +50°C [-4°F to +122°F].
It is recommended that the instrument be stored in a dry place at room
temperature.
NOTE! Do not leave the dive computer in direct sunlight!
Tissue Calculation Model
•
Suunto Deep Stop RGBM algorithm (developed by SUUNTO and
Bruce R. Wienke, BS, MS and PhD).
•
9 tissue compartments
•
Tissue compartment halftimes: 2.5, 5, 10, 20, 40, 80, 120, 240
and 480 minutes (on gassing). The off gassing halftimes are
slowed down.
•
Reduced gradient (variable) “M” values based on diving habit
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69
and dive violations. The “M” values are tracked up to 100 hours
after a dive.
•
The EAN and oxygen exposure calculations are based on
recommendations by R.W. Hamilton, PhD and currently
accepted exposure time limit tables and principles.
Battery
Vytec:
•
One 3 V lithium battery: CR 2450 (K5597) and O-ring 1,78 mm
x 31,47 mm 70 ShA (K5664).
•
•
Battery storage time (shelf life): Up to three years.
Replacement: Every two years or more often depending on
dive activity.
•
•
•
•
Life expectancy at 20°C [68°F].
0 dives/y
-> 2 years
-> 1,5 years
-> 1 year
100 dives/y
300 dives/y
The following conditions have an affect on the expected battery
lifetime:
•
•
The length of the dives.
The condition in which the unit is operated and stored (e.g.
temperature/cold conditions). Below 10°C [50°F] the expected
battery lifetime is about 50-75% of that at 20°C [68°F].
•
•
The use of the backlight and audible alarms.
The quality of the battery (some lithium batteries may exhaust
unexpectedly, which cannot be tested in advance).
•
The time the dive computer has been stored until it gets to the
customer. The battery is installed into the unit at the factory.
Transmitter:
•
One 3 V lithium battery: 1/2AA (K5546) and
O-ring 2,00 mm x 25,00 mm (K5538).
Battery storage time (shelf life): Up to three years.
Replacement: Every two years or more often depending on
dive activity.
•
•
•
•
•
•
Life expectancy at 20°C [68°F]:
0 dives/y
-> 3 years
-> 2 years
-> 1 year
100 dives/y
400 dives/y
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The following conditions have an affect on the expected battery
lifetime:
•
•
The length of the dives.
The condition in which the unit is operated and stored (e.g.
temperature/cold conditions). Below 10°C [50°F] the expected
battery lifetime is about 50-75% of that at 20°C [68°F].
•
•
The use of the backlight and audible alarms.
The quality of the battery (some lithium batteries may exhaust
unexpectedly, which cannot be tested in advance).
•
The time the dive computer has been stored until it gets to the
customer. The battery is installed into the unit at the factory.
NOTE! Low temperature or an internal oxidation of the battery may cause
the battery warning even though the battery has enough capacity. In this
case, the warning usually disappears when the Dive Mode is activated
again.
7. WARRANTY
NOTE! The warranty arrangements are different in different countries.
The dive computer packaging contains information regarding the war-
ranty benefits and requirements applicable to your purchase.
This Suunto dive computer is warranted against defects in workmanship
and materials for a period of two years after purchase to the original
owner subject to and in accordance with the terms and conditions set
forth below:
The dive computer should be serviced or repaired only by an authorized
Suunto dealer or distributor.
This warranty does not cover damage to the product resulting from im-
proper usage, improper maintenance, neglect of care, alteration or un-
authorized repair. This warranty will automatically become void if proper
preventive maintenance procedures have not been followed as outlined
in the use and care instructions for this product.
If a claim under this or any other warranty appears to be necessary,
return the product, freight prepaid, to your Suunto dealer or distribu-
tor or qualified repair facility. Include your name and address, proof of
purchase and/or service registration card, as required in your country.
The claim will be honored and the product repaired or replaced at no
charge and returned in what your Suunto dealer or distributor determines
a reasonable amount of time, provided all necessary parts are in stock.
All repairs made, not covered under the terms of this warranty, will be
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71
made at the owner’s expense. This warranty is non-transferable from
the original owner.
All implied warranties, including but not limited to the implied warranties
of merchantability and fitness for a particular purpose, are limited from
date of purchase and in scope to the warranties expressed herein. Su-
unto shall not be liable for loss of use of the product or other incidental
or consequential costs, expenses or damage incurred by the purchase.
All warranties not stated herein are expressly disclaimed.
Some states do not allow the exclusion or limitation of implied warranties
of consequential damages, so the above exclusions or limitations may
not apply to you. This warranty gives you specific legal rights, and you
may also have other rights that vary from state to state.
This warranty does not cover any representation or warranty made by
dealers or representatives beyond the provisions of this warranty. No
dealer or representation is authorized to make any modifications to this
warranty or to make any additional warranty.
Battery replacement is not covered by this warranty.
This Instruction Manual should be kept with your dive computer.
8. SUUNTOSPORTS.COM
SuuntoSports.com is an international free web community where you can
refine and share the data that you have measured with your personal
Suunto instrument and analyzed with the sport-specific PC interface.
SuuntoSports.com offers you a number of features that help you to get
the most out of your sport and your Suunto Vytec.
If you already own a personal Suunto sports instrument you can access
all sport-specific functions through registration. If you do not yet have
an instrument you may either log in as a guest or register yourself. As a
guest you can view and read, but registration gives you the right to use
other functions and participate to discussions.
8.1. SYSTEM REQUIREMENTS
SuuntoSports.com has the following system requirements:
•
•
•
•
Internet Connection
Modem: recommended 56k or faster
Browser: IE 4.0 or better, Netscape 4.7x or newer
Resolution: minimum 800 x 600, best viewed with 1024 x 768
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72
8.2. SUUNTOSPORTS.COM SECTIONS
SuuntoSports.com includes three sections with several functions. The
following paragraphs describe only the basic functions of SuuntoSports.
com. You can find detailed descriptions of all the site functions and ac-
tivities and step-by-step instructions for using them from the site Help.
The Help is available on each page and its icon is located on the right
side of the bar dividing the screen. The Help is frequently updated as
the site develops.
SuuntoSports.com offers several possibilities for searching the informa-
tion on site. In addition to the free search, you can search, for example,
for groups, users, resorts, logs and sports.
The information published on the SuuntoSports.com contains internal
links so that you do not always have to search for the information from
the very beginning. For example, if you view a description of a resort,
you can follow the links and view the resort information sender’s personal
information, logs related to the resort and charts created from the logs, if
the sender has agreed to this information being made public.
My Suunto
The My Suunto section of the site is meant for your personal information.
You can store information about yourself, your wristop computer, your
sporting and training activities, etc. When you upload your personal logs
to SuuntoSports.com they are displayed in your personal information.
Here you can also manage them and decide if they can be presented to
all other community users or just to limited groups.
When you have uploaded logs to SuuntoSports.com, you can create
charts from the dive related data in the logs. You can also publish your
logs and compare them with other users’ logs.
The My Suunto section also contains a personal calendar that you can
use to mark personal events and other useful information.
Communities
In the Communities section, SuuntoSports.com users can form or search
groups and manage their own groups. For example, you can create a
group for all your diving friends, and share information about each other’s
trips, give advice and discuss where and when you could go diving to-
gether. Groups can be either open or closed—closed groups mean that
you have to apply for a membership and be accepted, before you can
participate in group activities.
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73
All groups have a home page that displays information about group
events and includes news, noticeboard and other information. Group
members can also use group-specific bulletin boards, chat rooms and
group calendars, and add links and create group activities.
Sport Forums
SuuntoSports.com has its own forum for each Suunto sport. The basic
features and functions are the same for all sport forums—sport-specific
news, bulletin boards and chat rooms. Users can also suggest links to
sports-related sites and tips regarding the sport and equipment to be
published on the site, or publish their own travel reports.
Sport forums include presentations of the resorts that are related to the
sport. Users can rank the resorts with comments and the results are
published next to the resort information.Aranking list can also be created
for other things—for example, where are the best diving sites, what group
has most members, who has uploaded most logs, and so on.
8.3. GETTING STARTED
To join the SuuntoSports.com community, connect to the Internet, open
page appears, click the Register icon and register yourself and your Su-
unto sports instrument. You can change and update your personal and
equipment profiles in My Suunto section afterwards.
After the registration you will automatically enter the SuuntoSports.com
home page that introduces the site structure and functional principles.
Note!
SuuntoSports.com is continuously developed further and its
content is subject to change.
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74
9. GLOSSARY
Air Time
The amount of dive time remaining, based on
a calculation of cylinder pressure and
ambient pressure and present air consump-
tion.
Altitude dive
Ascent rate
A dive made at an elevation greater than
300 m [1000 ft] above sea level.
The speed at which the diver ascends toward
the surface.
ASC RATE
Ascent time
Abbreviation for ascent rate.
The minimum amount of time needed to
reach the surface on a decompression stop
dive.
ASC TIME
Ceiling
Abbreviation for ascent time.
On a decompression stop dive the shallow-
est depth to which a diver may ascend
based on computer nitrogen load.
Ceiling Zone
On a decompression stop dive the zone
between the ceiling and the ceiling plus 1.8
m [6 ft]. This depth range is displayed with
the two arrows pointing toward each other
(the ”hour glass” icon).
CNS
Abbreviation for Central Nervous System
toxicity.
Central Nervous System Toxicity
Toxicity caused by oxygen. Can cause a
variety of neurological symptoms. The most
important of which is an epileptic-like
convulsion which can cause a diver to
drown.
CNS%
Central Nervous System toxicity limit fraction.
Also note Oxygen Limit Fraction
Compartment
DAN
See “Tissue group”.
Divers Alert Network.
DCI
Abbreviation for decompression illness.
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75
Decompression
Time spent at a decompression stop or range
before surfacing, to allow absorbed nitrogen
to escape naturally from tissues.
Decompression range
On a decompression stop dive the depth
range, between the floor and ceiling, within
which a diver must stop for some time during
ascent.
Decompression illness Any of a variety of maladies resulting either
directly or indirectly from the formation of
nitrogen bubbles in tissues or body fluids, as
a result of inadequately controlled decom-
pression. Commonly called “bends” or “DCI”.
Dive series
A group of repetitive dives between which
the dive computer indicates some nitrogen
loading is present. When nitrogen loading
reaches zero the dive computer deactivates.
Dive time
DP
Elapsed time between leaving the surface to
descend, and returning to the surface at the
end of a dive.
Delta P, describing the Cylinder Pressure
drop during the dive; difference in cylinder
pressure between beginning and end of dive.
EAD
Abbreviation for equivalent air depth.
Abbreviation for enriched air nitrox.
EAN
Enriched Air Nitrox
Also called Nitrox or Enriched Air = EANx.
Air that has some oxygen added. Standard
mixes are EAN32 (NOAA Nitrox I = NN I)
and EAN36 (NOAA Nitrox II = NN II).
Equivalent Air Depth
Floor
Nitrogen partial pressure equivalent table.
The deepest depth during a decompression
stop dive at which decompression takes
place.
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76
Half-time
After a change in ambient pressure, the
amount of time required for the partial
pressure of nitrogen in a theoretical
compartment to go half-way from its
previous value to saturation at the new
ambient pressure.
HP
Abbreviation for high pressure (= cylinder
pressure).
Multi-level dive
A single or repetitive dive that includes
time spent at various depths and whose
no-decompression limits are therefore not
determined solely by the maximum depth
attained.
NITROX
NOAA
In sports diving refers to any mix with a
higher fraction of oxygen than standard air.
United States National Oceanic and
Atmospheric Administration.
No-decompression time The maximum amount of time a diver may
remain at a particular depth without having
to make decompression stops during the
subsequent ascent.
No-decompression dive Any dive which permits a direct,
uninterrupted ascent to the surface at any
time.
NO DEC TIME
OEA = EAN = EANx
OLF
Abbreviation for no-decompression time limit.
Abbreviation for Oxygen Enriched Air Nitrox.
Abbreviation for Oxygen Limit Fraction.
Abbreviation for Oxygen Tolerance Unit.
OTU
Oxygen Tolerance Unit Is used to measure the Whole-Body-Toxicity.
Oxygen Limit Fraction
A term used by SUUNTO for the values
displayed in the Oxygen Toxicity bargraph.
The value is either the CNS% or the OTU%.
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77
O2%
Oxygen percentage or oxygen fraction in
the breathing gas. Standard air has 21%
oxygen.
Oxygen partial pressure Limits the maximum depth to which the
used Nitrox mixture can safely be used. The
maximum partial pressure limit for enriched
air diving is 1.4 bar. The contingency partial
pressure limit is 1.6 bar. Dives beyond this
limit have the risk for immediate oxygen
toxicity.
PO2
Abbreviation for oxygen partial pressure.
RGBM
Abbreviation for Reduced Gradient Bubble
Model.
Reduced Gradient Bubble Model
Modern algorithm for tracking both dissolved
and free gas in divers.
Repetitive dive
Any dive whose decompression time limits
are affected by residual nitrogen absorbed
during previous dives.
Residual nitrogen
The amount of excess nitrogen remaining in
a diver after one or more dives.
SURF TIME
Abbreviation for surface interval time.
Surface interval time
Elapsed time between surfacing from a dive
and beginning a descent for the subsequent
repetitive dive.
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78
Tissue group
Theoretical concept used to model bodily tis-
sues for the construction of decompression
tables or calculations.
Whole-Body Toxicity
Another form of oxygen toxicity, which is
caused by prolonged exposure to high
oxygen partial pressures. The most com-
mon symptoms are irritation in the lungs, a
burning sensation in the chest, coughing and
reduction of the vital capacity. Also called
Pulmonary Oxygen Toxicity. See also OTU.
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79
DISPOSAL OF THE DEVICE
Please dispose of the device in an appropriate way,
treating it as electronic waste. Do not throw it in the
garbage. If you wish, you may return the device to your
nearest Suunto dealer.
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80
M A I N M O D E
M E N U B A S E D
S U B M O D E 1
S U B M O D E 2
E D
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Printed in Finland 08.2005 / Esa Print Oy / 151047
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Made in Finland
© Suunto Oy 01 / 2004, 08 / 2005
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