Suunto Vyper Air User manual

EN
SUUNTO
VYPER
USER’S GUIDE

QUICK REFERENCE GUIDE
Low Battery Warning
Temperature Week Day Mode Text
Personal Adjustment Mode
Do Not Fly Icon
Bar Graph: - Mode Indicator - Consumed Botton Time - Oxygen Limit Fraction
Bar Graph: - Ascent Rate Indicator - Battery Power Indicator - Logbook Page Indicator
Present Depth Dive Counter
Dive Planning Button Scroll Button (increase value, ascend)
Oxygen Percentage in Nitrox Mode
Current Time Display Surface Interval Time No Flying Time No-Decompression Time Total Ascent Time Safety Stop Time
Arrows: - Decompression Stop at the Ceiling Depth - Mandatory Safety Stop Zone - Ascent Recommended - Must Descend
Dive Time Time Month,Day
The Smart Button: - Activation - Backlight - Mode Operations
Maximum Depth Ceiling Depth on Decompression Mandatory Safety Stop Depth Average Depth on Logbook Oxygen Partial Pressure AM/PM Indicator
Altitude Adjustment Mode
Logbook Symbol
Daily/DiveTime/Depth Alarm On Indicator
Dive Attention Symbol
Indicators for the Smart Button
Indicators for the Scroll Buttons
Time (alternative display) Button Scroll Button (decrease value, descend)
Fast Ascent Warning (SLOW)
Safety Stop Warning Safety Stop Indicator

1
DEFINITION OF WARNINGS, CAUTIONS AND NOTES
Throughout this manual, special references are made when deemed im-
portant. 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, VYPER, Consumed Bottom Time (CBT), Oxygen Limit Frac-
tion (OLF), SUUNTO RGBM, Continuous Decompression and their logos
are all registered or unregistered trademarks of SUUNTO. All rights are
reserved.
Patents have been issued or applied for one or several features of this
product.
CE
The CE mark is used to mark conformity with the European Union EMC
directive 89/336/EEC. The SUUNTO dive instruments fulfill all the required
EU directives.
PREN 13319
PrEN 13319 “Diving accessories - Depth gauges and combined depth and
time measuring devices - Functional and safety requirements, test methods”
is an European diving depth gauge standard draft. The VYPER is designed
to comply with this standard draft.

2
ISO 9001
SUUNTO Oyj’s Quality Assurance System is certified by Det Norske Veritas
to be according to the ISO 9001 in all SUUNTO Oyj’s operations (Quality
Certificate No. 96-HEL-AQ-220).
SUUNTO Oyj 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 VYPER is subject to change
without notice.

3
WARNING!
READ THIS MANUAL! Carefully read this instruction manual in its entirety,
including section 1.1. “Safety Precautions”. Make sure that you fully understand
the use, displays and limitations of the dive computer. Any confusion resulting
from improper use of this device may cause diver to commit errors that may
lead to serious injury or death.
WARNING!
ALWAYS ACTIVATE THE COMPUTER TO CHECK THE NO-FLYING
TIME REMAINING 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. Failure to check the remaining no-flying time prior
to flying can greatly increase the risk of DCS.
WARNING!
IN THE DATATRANSFER MODE THE DIVE MODE IS NOT AUTOMATI-
CALLY ACTIVATED. You must exit this mode before diving.
NOTE!
IT IS NOT POSSIBLE TO CHANGE BETWEEN THE AIR, NITROX AND
GAUGE MODES BEFORE THE INSTRUMENT HAS COUNTED DOWN
THE NO-FLYING TIME.
IF YOU DIVE WITH THE GAUGE MODE, IT IS NOT POSSIBLE TO
CHANGE BETWEEN THE MODES WITHIN 48 HOURS.
WHEN PLANNING SUBSEQUENT AIR AND NITROX DIVES DURING
THE SAME DIVE SERIES, YOU SHOULD HAVE THE DIVE COMPUTER
SET IN THE NITROX MODE AND MODIFY THE GAS MIX
ACCORDINGLY.

4
TABLE OF CONTENTS
WARNINGS ....................................................................................3
1. INTRODUCTION .......................................................................6
1.1. SAFETY PRECAUTIONS ............................................................6
1.1.1. Emergency Ascents .....................................................................8
1.1.2. Dive Computer Limitations ........................................................9
1.1.3. Enriched Air and Safety ..............................................................9
2. GETTING ACQUAINTED ....................................................... 10
2.1. FUNCTIONS ...............................................................................10
2.2. PUSH BUTTONS ........................................................................10
2.3. WATER CONTACTS...................................................................12
3. DIVING WITH THE DIVE COMPUTER................................ 13
3.1. BEFORE DIVING .......................................................................13
3.1.1. Activation and Prechecks ..........................................................13
3.1.2. Battery Power Indicator and Low Battery Warning..................15
3.1.3. Dive Planning [PLAN] .............................................................16
3.1.4. User Definable Functions and Alarms ......................................17
3.2. DIVING WITH AIR.....................................................................18
3.2.1. Basic Dive Data ........................................................................18
3.2.2. Consumed Bottom Time (CBT)................................................19
3.2.3. Safety Stop Displays .................................................................20
3.2.4. Ascent Rate Indicator ................................................................21
3.2.5. Decompression dives ................................................................23
3.3. DIVING WITH ENRICHED AIR NITROX ...............................27
3.3.1. Before Diving............................................................................27
3.3.2. Oxygen Displays.......................................................................29
3.3.3. Oxygen Limit Fraction (OLF)...................................................30
3.4. GAUGE MODE ...........................................................................31
3.5. AT THE SURFACE......................................................................32
3.5.1. Surface Interval.........................................................................32
3.5.2. Dive Numbering........................................................................33
3.5.3. Flying After Diving...................................................................34
3.6. AUDIBLE AND VISUAL ALARMS ..........................................35
3.7. HIGH ALTITUDE DIVES AND PERSONAL ADJUSTMENT.37
3.7.1. Altitude Adjustment ..................................................................37
3.7.2. Personal Adjustment .................................................................38
3.8. ERROR CONDITIONS ...............................................................40

5
4. MENU BASED MODES........................................................... 41
4.1. MEMORIES AND DATA TRANSFER [1 MEMORY] ..............43
4.1.1. Logbook and Dive Profile Memory [1 LOGBOOK]................43
4.1.2. Dive History Memory [2 HISTORY] .......................................46
4.1.3. Data Transfer and PC-Interface [3 TR-PC]...............................46
4.2. SIMULATION MODE [2 SIMUL]..............................................48
4.2.1. Dive Simulator [1 SIM DIVE]..................................................48
4.2.2. Dive Planning Simulator [2 SIM PLAN]..................................49
4.3. SET MODES [3 SET]..................................................................50
4.3.1. Dive Parameter Settings [1 SET DIVE] ...................................50
4.3.1.1. Altitude Adjustment and Personal Adjustment
Settings [1 AdJ MODE] .............................................50
4.3.1.2. Dive Time Alarm Setting [2 d ALARM] ...................51
4.3.1.3. Maximum Depth Alarm Setting [3 MAX DPTH] .....52
4.3.1.4. Nitrox/Oxygen Setting [4 NITROX] .........................52
4.3.2. Setting Time [2 SET TIME]......................................................53
4.3.2.1. Adjusting Time [1 AdJ TIME] ...................................53
4.3.2.2. Adjusting Date [2 AdJ DATE] ...................................53
4.3.2.3. Adjusting Daily Alarm Setting [3 T ALARM]...........54
4.3.3. Setting Preferences [3 SET PREF] ...........................................54
4.3.3.1. Backlight Setting [1 LIGHT] .....................................54
4.3.3.2. Dive Computer Units Setting [2 MODEL] ................55
4.3.3.3. Dive Computer Model Setting [3 MODEL] ..............55
5. CARE AND MAINTENANCE ................................................. 56
5.1. IMPORTANT INFORMATION...................................................56
5.2. CARE OF YOUR DIVE COMPUTER........................................57
5.3. MAINTENANCE.........................................................................58
5.4. WATER RESISTANCE INSPECTION .......................................58
5.5. BATTERY REPLACEMENT ......................................................59
6. TECHNICAL DESCRIPTION .................................................. 63
6.1. OPERATING PRINCIPLES ........................................................63
6.2. REDUCED GRADIENT BUBBLE MODEL, SUUNTO RGBM65
6.3. OXYGEN EXPOSURE ...............................................................66
6.4. TECHNICAL SPECIFICATION .................................................67
7. WARRANTY............................................................................. 70
8. GLOSSARY............................................................................... 71

6
1. INTRODUCTION
Congratulations on your choice of the SUUNTO VYPER advanced dive computer.
This dive computer is a compact and sophisticated multipurpose dive instrument
that will give you years of trouble-free and joyful diving.
1.1. SAFETY PRECAUTIONS
Do not attempt to use the dive computer without reading this instruction manual in
its entirety, including all the warnings below. 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 standard and multi-level sport
dives within the described no-decompression limits. It is NOT A SUBSTITUTE
FOR CERTIFIED SCUBA INSTRUCTION including training in the principles
of decompression.
WARNING!
ONLY DIVERS TRAINED IN THE PROPER USE OF SCUBA EQUIPMENT
SHOULD USE THE DIVE 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.
WARNING!
NOT FOR PROFESSIONAL USE! SUUNTO dive computers are intended
for recreational use only. The demands of commercial or professional diving
often expose the diver to depths and prolonged exposures including multiday
exposures that tend to increase the risk of decompression sickness. Therefore,
SUUNTO specifically recommends that the device be not used for commercial
or other severe diving activity.
WARNING!
PERFORM PRECHECKS! Always activate and check the device before div-
ing in order to ensure that all LCD segments are completely displayed, that
the device has not run out of battery power, and that the oxygen, altitude and
personal adjustments are correct.

7
WARNING!
NO PROCEDURE, DIVE COMPUTER OR DIVE TABLE WILL PRE-
VENT THE POSSIBILITY OF DECOMPRESSION SICKNESS (DCS) OR
OXYGEN TOXICITY! You must understand and accept that there is no pro-
cedure, dive computer or dive table that will totally prevent the possibility of
a decompression accident or that oxygen toxicity will not occur, even within
accepted limits. For example, the individual physiological make up can vary
within an individual from day to day. The dive computer cannot account for
these variations. As an added measure of safety, you should consult a physician
regarding your fitness before diving with the dive computer. Decompression
sickness can cause serious injury or death.
DIVING WITH ENRICHED AIR MIXTURES (NITROX) EXPOSES THE
USER TO RISKS DIFFERENT FROM THOSE ASSOCIATED WITH DIVING
WITH STANDARD AIR. THESE RISKS ARE NOT OBVIOUSAND REQUIRE
TRAINING TO UNDERSTAND AND AVOID. RISKS INCLUDE POSSIBLE
SERIOUS INJURY OR DEATH.
DO NOT ATTEMPT TO DIVE WITH ANY GAS MIX OTHER THAN STAN-
DARD AIR WITHOUT FIRST RECEIVING CERTIFIED TRAINING IN THIS
SPECIALTY.
WARNING!
USE BACK-UP INSTRUMENTS! Make sure that you use back-up instru-
mentation including a depth gauge, submersible pressure gauge, timer or
watch, and have access to decompression tables whenever diving with the
dive computer.
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 account dives made without the com-
puter. Thus any diving activity 48 hours prior to initial use of the computer
may give misleading information, which may substantially increase the risk
of decompression sickness and must be avoided.

8
WARNING!
SET THE CORRECT ALTITUDE ADJUSTMENT MODE! When diving at
altitudes greater than 300 m [1000 ft] the Altitude Adjustment feature must
be correctly selected in order for the computer to calculate no-decompression
status. Failure to properly select the Altitude Adjustment Mode correctly will
result in erroneous data and can greatly increase the risk of DCS.
WARNING!
THE DIVE COMPUTER IS NOT INTENDED FOR USE AT ALTITUDES
GREATER THAN 3000 m [10000 ft]! Diving at altitudes above this limit may
significantly increase the risk of DCS.
WARNING!
SET THE CORRECT PERSONAL ADJUSTMENT MODE! The diver
should use this option to make the calculations more conservative, whenever
it is believed that factors, which tend to increase the possibility of DCS exist.
Failure to properly select the Personal Adjustment Mode correctly will result
in erroneous data and can greatly increase the risk of DCS.
CAUTION!
ENSURE THE WATER RESISTANCE OF THE DEVICE! Always check
the water resistance of the battery compartment when replacing the battery.
Moisture inside the device or battery compartment will seriously damage the
unit. Only an authorized SUUNTO dealer or distributor should do service
activities.
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 your air supply will safely allow. After reaching
the surface stay out of the water at least 24 hours.

9
1.1.2. Dive Computer Limitations
While the dive computer is based on current decompression research and technol-
ogy, 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 a theoretical math-
ematical models, which are intended to serve as a guide to reduce the probability
of decompression sickness.
1.1.3. Enriched Air and Safety
Diving with enriched air provides the diver an opportunity to reduce the risk of
decompression sickness 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 op-
erational considerations to be addressed when handling altered breathing mixes.
Elevated concentrations of oxygen present a fire or explosion hazard and you are
advised to consult the manufacturer of the diving equipment you will be exposing
to enriched air with regard to limitations.
WARNING!
IF YOUR DIVE COMPUTER IS INSTALLED IN A CONSOLE, DO NOT
EXPOSE THE PRESSURE GAUGE TO ANY GAS MIX CONTAINING
MORE THAN 40% OXYGEN! Enriched air with greater oxygen content may
present a risk of fire or explosion and serious injury or death.

10
2. GETTING ACQUAINTED
2.1. FUNCTIONS
The VYPER multipurpose dive computer features three dive computer models
(AIR, NITROX, GAUGE), three main operating modes (TIME/STAND-BY,
SURFACE, DIVING), three menu based main modes (MEMORY, SIMULATION,
SET) and 15 - 17 menu based submodes (see figure in the back cover). 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.
You can select the dive computer model between the Regular Air Dive
Computer, Enriched Air Dive Computer and Depth Gauge and Timer modes.
The timekeeping display is the primary display of the instrument (Fig. 2.1).
In other Modes (except in the Diving or Simulator Modes), if no button is
operated within 5 minutes, the dive computer beeps and returns to the time-
keeping display automatically. The timekeeping display shuts off after two
hours, but pressing the PLAN or TIME button activates it.
When diving, the dive entry time and date is registered in the Logbook Memory.
Remember always to check before diving that the time and date are correctly set,
especially when traveling to different time zones. To set the time and date, refer
to section 4.3.2. “Setting Time”.
2.2. PUSH BUTTONS
The dive computer has easy-to-use push buttons and an advising display, which
guides the user. The SMART (MODE) button is the key of the system. The two
scroll buttons, PLAN and TIME, are used for scrolling up and down the menus
and to get the alternative displays visible. The dive computer is controlled with
these three push buttons as follows (see Fig. 2.2).
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).

11
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 mark in the profile
memory during a dive.
• To scroll up the options (s, increase).
Press the arrow down scroll (TIME) button
• To activate the timekeeping display, if the
display is blank.
• To activate the Time display(s) and/or
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
PLAN sand TIME tpush 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 in the Dive Mode, press the PLAN
(s) button.
Menu Modes press the SMART (MODE)
button.
The display is illuminated by holding down the
SMART button for more than two seconds.
Fig. 2.1 The time keeping
display. Pressing the PLAN
or TIME button activates the
display.
Fig. 2.2 The push buttons of the
dive computer.
The SMART button
The PLAN, TIME and
SCROLL buttons

12
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 conductivity of the water and an 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.
Contamination or dirt on the water contacts or push
buttons may prevent their automatic operation. It
is therefore important that the water contacts and
push buttons are kept clean. If the water contacts of
the dive computer 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 therefore important
that the instrument 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. Sometimes it might be necessary
to remove the instrument from the protective boot
for cleaning.
Fig. 2.4 Active water contacts
are indicated by the text AC.
Fig 2.3 The depth sensor (A),
the water/data transfer contacts
(B).
C
L
O
S
E
O
P
E
N
A
B

13
° F
° C
ft
MAXAVGPO2
NO DEC TIME
STOP
TIME
TIME
SURF
DIVE
O2%
ASC TIME
CEILING
OK
QUIT
SELECT
OPTIONS
NO
S
L
O
W
T
C
B
OLF
DIVE
m
3. DIVING WITH THE DIVE
COMPUTER
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. The instrument’s dive
functions are operated in the Dive Mode.
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 necessary to turn
on the Dive Mode before diving to check the altitude
and personal adjustment settings, battery warning,
oxygen adjustments, etc. Press the SMART (On)
button to activate the instrument.
After activation all display elements will turn on
showing mostly figure 8’s and graphical 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 (default)
the screen will enter the Surface Mode (Fig. 3.4).
If set to GAUGE Mode the text GAUGE is shown
(Fig. 3.3) and if set to NITROX Mode the essential
oxygen parameters are shown with the text NITROX
(Fig. 3.20) before the Surface Mode.
Fig. 3.2 Startup II. The battery
power indicator.
d)
b)
c)
a)
OK
QUIT
Fig. 3.1 Startup I. All segments
shown.

14
°C
TIME
DIVE
m
TIME
At this time, perform your precheck making sure
that:
• the instrument operates in the correct
mode and provides a complete display
• the low battery indicator is not on
• the altitude and personal adjustment
settings are correct (AIR and NITROX
Modes)
• the instrument displays correct units
• the instrument displays correct tempera-
ture and depth (0.0 m [0 ft])
• the buzzer beeps.
And if set to NITROX mode, make sure that:
• the oxygen percentage is adjusted accord-
ing to the measured enriched air blend in
your cylinder
• the partial pressure limit of oxygen is set
correctly.
The dive computer is now ready for diving.
NOTE! The surface interval time is not shown
before the first dive.
After activation of the Dive Mode or after the dive
has ended, the instrument will automatically switch
to show the time keeping display within 5 minutes to
conserve the battery power, if you do not press any
buttons or if you don’t start a dive.
Fig 3.4 Startup IV. The Surface
Mode: The depth and dive time
are zeros (as no dives have yet
been made), and the tempera-
ture is 20°C [68°F].
Fig. 3.3 Startup III. The Gauge
Mode.
Fig. 3.5 Low Battery Warning.
The battery symbol indicates
that the battery is low and
battery replacement is recom-
mended.
° C
TIME
DIVE
m

15
3.1.2. Battery Power Indicator and Low Battery
Warning
This dive computer has a unique graphic Battery Power Indicator designed to give
you an advance notice of impending need to change the battery.
The Battery Power Indicator can always be seen, when the Dive Mode is acti-
vated. 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
NOTE! Temperature or an internal oxidation of the battery affects the battery
voltage. If the instrument is stored for a long period, the low battery warning
may be displayed even though the battery has enough capacity. The low
battery warning may also be displayed at low temperatures, even though
the battery has enough capacity in warmer conditions. In these cases repeat
the battery check procedure.
In all the other modes the Low Battery Warning is indicated by the battery
symbol.
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
the battery replacement is recommended.
NOTE! For safety reasons the backlight can not be activated when the low
battery warning is indicated by the battery symbol.
Display Operation Figure 3.2
BAT + Normal, full battery. a)
4 segments + OK
BAT + Normal, battery power is getting low or the b)
3 segments temperature is low.
Battery replacement is recommended if you
are going to colder conditions or if you are
planning to make a dive trip.
LOWBAT + Battery power is low and the battery c)
2 segments + replacement is recommended.
low battery symbol The battery symbol is displayed
The backlight is disabled.
LOWBAT + Change the battery! d)
1 segment + Returns to the Time display. Activation and
QUIT+ all functions are disabled.
low battery symbol

16
3.1.3. Dive Planning [PLAN]
It is possible at any time in the Surface Mode to enter the Planning Mode, simply
by pressing the PLAN button. 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 arrow down TIME (t) 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 arrow up PLAN (s) button the next shallower depth
will be shown again.
The Planning Mode can be canceled by pressing the SMART (QUIT) button.
NOTE! The Planning Mode is disabled in GAUGE mode and in the Error
Mode (see section 3.8. “Error Conditions”).
Higher Altitude or Personal Adjustment 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”.
Planning Mode also accounts for the following information from previous
dives:
• calculated residual nitrogen or
• surface intervals up to four days between the dives.
The no-decompression times given for different depths will therefore be shorter
than before your first “fresh” dive.
DIVE NUMBERING SHOWN DURING DIVE PLANNING
Repetitive dives belong to the same repetitive dive series if the instrument still
has been counting no-flying time.
When the surface time is less than 5 minutes, the dives are considered to be one
and the same. The dive number will not change for the second part of such a dive
and the dive time will continue where it left off (see also section 3.5.2. “Dive
Numbering”).

17
3.1.4. User Definable Functions
and Alarms
This dive computer has several User Definable Func-
tions and depth and time related alarms to be preset
according to your personal preference.
The dive computer model, units and backlight on time
preferences 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”.
Fig. 3.6 Dive Planning. The
Planning mode is indicated by
the PLAN text. The no-decom-
pression time limit at 30.0 m
[100 ft] is 14 minutes in A0/P1
mode.
QUIT
DIVE
NO DEC TIME
MAX

18
3.2. DIVING WITH AIR
3.2.1. 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 dive, the following information will be displayed:
• your present depth in meters [ft]
• the Altitude Adjustment setting on the left side of the center window
with a wave and a mountain symbols (A0, A1, or A2) (see Table 3.3)
• the Personal Adjustment setting on the left side of the center window
with a diver symbol and + signs (P0, P1, or P2) (see Table 3.4)
• the maximum depth during this dive in meters [ft], indicated as MAX
• the water temperature followed by °C for Centigrade [or °F for Fahren-
heit] in the lower left corner
• the elapsed dive time in minutes, shown as DIVE TIME in the lower
right corner
• 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 listed in Section 6.1. “Operating
Principles”.
Alternative displays by pressing the TIME button in the lower right corner
(Fig. 3.8):
• the current time, shown as TIME.
NOTE! The TIME display automatically changes back to DIVE TIME display
in the Diving Mode.
BOOKMARK
It is possible to make special marks in the profile memory during a dive. These
bookmarks will be shown as a blinking 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. 3.9).