Suunto Scuba Diving Equipment SS021646000 User Manual

SUUNTO VYPER NOVO  
USER GUIDE  
 
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1 SAFETY  
Types of safety precautions  
WARNING: - is used in connection with a procedure or situation  
that may result in serious injury or death.  
CAUTION: - is used in connection with a procedure or situation  
that will result in damage to the product.  
NOTE: - is used to emphasize important information.  
TIP: - is used for extra tips on how to utilize the features and  
functions of the device.  
Before you dive  
Make sure that you fully understand the use, displays and  
limitations of your dive instruments. If you have any questions  
about this 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!  
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Safety precautions  
WARNING: ONLY TRAINED DIVERS SHOULD USE A DIVE  
COMPUTER! Insufficient training for any kind of diving, including  
freediving, may cause a diver to commit errors, such as incorrect use  
of gas mixtures or improper decompression, that may lead to  
serious injury or death.  
WARNING: You must read the printed quick guide and online  
user guide for your dive computer. Failure to do so may lead to  
improper use, serious injury or death.  
WARNING: THERE IS ALWAYS A RISK OF DECOMPRESSION  
SICKNESS (DCS) FOR ANY DIVE PROFILE EVEN IF YOU FOLLOW THE  
DIVE PLAN PRESCRIBED BY DIVE TABLES OR A DIVE COMPUTER. NO  
PROCEDURE, DIVE COMPUTER OR DIVE TABLE WILL PREVENT THE  
POSSIBILITY OF DCS OR OXYGEN TOXICITY! An individual’s  
physiological make up can vary from day to day. The dive computer  
cannot account for these variations. You are strongly advised to  
remain well within the exposure limits provided by the instrument  
to minimize the risk of DCS. As an added measure of safety, you  
should consult a physician regarding your fitness before diving.  
WARNING: If you have a pacemaker, we recommend you do not  
scuba dive. Scuba diving creates physical stresses on the body which  
may not be suitable for pacemakers.  
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WARNING: If you have a pacemaker, consult a doctor before  
using this device. The inductive frequency used by the device may  
interfere with pacemakers.  
WARNING: Allergic reactions or skin irritations may occur when  
product is in contact with skin, even though our products comply  
with industry standards. In such event, stop use immediately and  
consult a doctor.  
WARNING: Not for professional use! Suunto dive computers are  
intended for recreational use only. The demands of commercial or  
professional diving may expose the diver to depths and conditions  
that tend to increase the risk of decompression sickness (DCS).  
Therefore, Suunto strongly recommends that the device not be used  
for any commercial or professional diving activities.  
WARNING: USE BACKUP INSTRUMENTS! Ensure that you use  
backup instrumentation, including a depth gauge, submersible  
pressure gauge, timer or watch, and have access to decompression  
tables whenever diving with a dive computer.  
WARNING: For safety reasons, you should never dive alone. Dive  
with a designated buddy. You should also stay with others for an  
extended time after a dive as the onset of possible DCS may be  
delayed or triggered by surface activities.  
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WARNING: PERFORM PRE-CHECKS! Always check that your dive  
computer is functioning properly and has the correct settings  
before diving. Check that the display is working, the battery level is  
OK, tank pressure is correct, and so forth.  
WARNING: Check your dive computer regularly during a dive. If  
there is any apparent malfunction, abort the dive immediately and  
safely return to the surface.  
WARNING: THE DIVE COMPUTER SHOULD NEVER BE TRADED OR  
SHARED BETWEEN USERS WHILE IT IS IN OPERATION! Its  
information will not apply to someone who has not been wearing it  
throughout a dive, or sequence of repetitive dives. Its dive profiles  
must match that of the user. If it is left on the surface during any  
dive, the dive computer will give inaccurate information for  
subsequent dives. No dive computer can take into account dives  
made without the computer. Thus, any diving activity up to four  
days prior to initial use of the computer may cause misleading  
information and must be avoided.  
WARNING: DO NOT EXPOSE ANY PART OF YOUR DIVE  
COMPUTER 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.  
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WARNING: DO NOT DIVE WITH A GAS IF YOU HAVE NOT  
PERSONALLY VERIFIED ITS CONTENTS AND ENTERED THE  
ANALYZED VALUE INTO YOUR DIVE COMPUTER! Failure to verify  
tank contents and enter the appropriate gas values where  
applicable into your dive computer will result in incorrect dive  
planning information.  
WARNING: Using a dive planner software such as in Suunto DM5  
is not a substitute for proper dive training. Diving with mixed gases  
has dangers that are not familiar to divers diving with air. To dive  
with Trimix, Triox, Heliox and Nitrox or all of them, divers must  
have specialized training for the type of diving they are doing.  
WARNING: Do not use Suunto USB Cable in areas where  
flammable gases are present. Doing so may cause an explosion.  
WARNING: Do not disassemble or remodel Suunto USB Cable in  
any way. Doing so may cause an electric shock or fire.  
WARNING: Do not use Suunto USB cable if cable or parts are  
damaged.  
CAUTION: DO NOT allow the connector pins of the USB cable to  
touch any conductive surface. This may short circuit the cable,  
making it unusable.  
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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 to immediately and safely ascend.  
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2 GETTING STARTED  
2.1 Display states and views  
Suunto Vyper Novo has four main modes: TIME, DIVE, PLANNING  
and MEMORY. Change modes by pressing [MODE].  
Unless DIVE mode is turned off, Suunto Vyper Novo automatically  
switches to DIVE mode if you are more than 1.2 m (4 ft) under  
water.  
DIVE  
PLAN  
MEM  
Time and dive modes have different views in the bottom row which  
you can scroll through with [DOWN] and [UP].  
2.2 Icons  
Suunto Vyper Novo uses the following icons:  
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1.  
8.  
9.  
2.  
3.  
4.  
5.  
6.  
10.  
7.  
Icon  
Description  
1
2
3
4
Daily alarm  
Dive alarm  
No-fly  
Safety stop  
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Icon  
5
Description  
Tank pressure (if available)  
Wireless transmission (if available)  
Low battery  
6
7
8
Active water contact  
Diver attention symbol  
Ascent rate  
9
10  
2.3 Set up  
To get the most out of your Suunto Vyper Novo, take some time to  
read this manual and familiarize yourself with the modes and  
settings. Make absolutely sure you have it set up as you want  
before getting into the water.  
To get started:  
1. Wake up the device by keeping any button pressed until the  
display turns on.  
2. Keep [DOWN] pressed to enter General Settings.  
3. Set time. See 3.8.1 Time.  
4. Set date. See 3.8.2 Date.  
5. Set units. See 3.8.3 Units.  
6. Press [MODE] to exit settings.  
The default dive mode is Air. For more information on dive modes,  
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3 FEATURES  
3.1 Activation and pre-checks  
Unless the dive mode turned off, the dive mode activates  
automatically when you dive deeper than 1.2 m (4 ft). However, you  
should switch to dive mode before diving to check altitude and  
personal settings, battery condition and so on.  
Each time your Suunto Vyper Novo enters dive mode, a series of  
automatic checks are performed. All graphical display elements are  
turned ON, and the backlight and the beep are activated. After this,  
your altitude and personal settings are displayed along with the  
maximum operating depth (MOD), gas content, and PO values.  
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Then the battery level is checked.  
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PO  
AO  
21  
1.6  
Between consecutive dives, the automatic checks also show current  
tissue saturation.  
PO  
AO  
21  
1.6  
Before leaving on a dive trip, it is highly recommended that you  
switch to dive mode to make sure everything is functioning  
properly.  
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After the automatic checks, Suunto Vyper Novo enters surface  
mode. At this point, you should perform your manual checks before  
entering the water.  
Ensure that:  
1. Suunto Vyper Novo is in the correct mode and provides complete  
displays.  
2. Altitude setting is correct.  
3. Personal setting is correct.  
4. Deepstops are set correctly.  
5. Unit system is correct.  
6. Correct temperature and depth are shown.  
7. The alarm beeps.  
3.1.1 Wireless Transmitter pre-check  
If the optional wireless tank pressure transmitter is used, check that:  
1. Tank gas and O settings are correct.  
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2. The transmitter is properly installed and the tank valve is open.  
3. The transmitter and Suunto Vyper Novo are paired.  
4. The transmitter is sending data (wireless transmission icon blinks,  
tank pressure is displayed).  
5. There is no transmitter low battery warning.  
6. There is enough air for your planned dive. Check the pressure  
reading against your back-up pressure gauge.  
3.1.2 Battery indicators  
Temperature or internal oxidation can affect the battery voltage. If  
you store your Suunto Vyper Novo for a long period or use it in cold  
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temperatures, the low battery warning may appear even though  
the battery has enough capacity.  
In these cases, re-enter dive mode and check the battery power. If  
the battery is low, the Low Battery warning comes on.  
If the low battery icon appears in surface mode, or if the display  
looks faded, the battery may be too low. Battery replacement is  
recommended.  
NOTE: For safety reasons, the backlight and buzzer (sound)  
cannot be activated when the low battery warning is displayed.  
3.2 Air time  
Air time can only be displayed when a wireless tank pressure  
transmitter is installed and in use.  
To activate air time:  
1. While in a dive mode, keep [DOWN] pressed.  
2. Press [DOWN] to scroll to Air Time.  
3. Press [UP] to turn on the air time reading.  
4. Press [SELECT].  
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5. Press [MODE] to exit.  
3.3 Alarms, warnings and notifications  
Suunto Vyper Novo has audible and visual alarms designed to let  
you know when important limits or presets are being reached.  
The two audible alarm types indicating high or low priority:  
Alarm type  
Sound pattern  
Duration  
2.4 s sound + 2.4 s  
break  
High priority  
0.8 s sound + 3.2 s  
break  
Low priority  
In addition, there are two audible guidance notifications:  
Instructional  
beep  
Sound pattern  
Interpretation  
Ascending  
Start ascending  
Start descending  
Descending  
Suunto Vyper Novo displays information during the alarm breaks in  
order to save battery life.  
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High priority alarms:  
Alarm  
Explanation  
High priority alarm  
followed by 'Start  
ascending' beep,  
repeated for maximum  
three minutes  
PO value greater than the adjusted  
2
value. Current depth is too deep for  
the gas in use. You should immediately  
ascend or change to a lower O % gas.  
2
PO value blinks  
2
High priority alarm  
followed by 'Start  
descending' beep,  
repeated for maximum  
three minutes Er blinks  
and an arrow points  
downwards.  
Decompression ceiling depth  
exceeded. You should immediately  
descend to, or below, the ceiling.  
High priority alarm,  
repeated three times.  
Maximum ascent rate of 10 m/min (33  
ft/min) exceeded. Slow down your  
ascent rate.  
SLOW blinks.  
Low priority alarms:  
Alarm type  
Alarm reason  
Low priority alarm  
followed by 'Start  
No-decompression dive becomes a  
decompression stop dive. Depth is  
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Alarm type  
Alarm reason  
ascending' beep,  
sounded two times.  
below the decompression floor level.  
You should ascend to, or above, the  
floor.  
ASC TIME blinks and an  
arrow points upwards.  
Low priority alarm  
followed by 'Start  
descending' beep.  
Mandatory deepstop violated. You  
should descend to complete the  
deepstop.  
DEEPSTOP blinks and an  
arrow points  
downwards.  
Low priority alarm  
followed by 'Start  
descending' beep,  
repeated for three  
minutes.  
Mandatory safety stop violated. You  
should descend to complete the safety  
stop.  
An arrow points  
downwards.  
Low priority alarm  
followed by two short  
beeps.  
Deepstop depth reached. Make the  
mandatory deepstop for the duration  
shown by the timer.  
DEEPSTOP and timer  
displayed.  
Low priority alarm,  
repeated twice.  
Tank pressure reaches the defined  
alarm pressure or the fixed alarm  
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Alarm type  
Alarm reason  
Tank pressure value  
blinks.  
pressure, 50 bar (700 psi).  
Acknowledge the alarm by pressing  
any button.  
Low priority alarm,  
repeated twice.  
OLF value at 80% or 100% (Nitrox dive  
mode only). Acknowledge the alarm  
by pressing any button.  
OLF% value blinks if PO  
2
value is greater than 0.5  
bar.  
Low priority alarm,  
repeated twice.  
Defined maximum depth or the  
maximum depth of the device  
exceeded. Acknowledge the alarm by  
pressing any button.  
Maximum depth value  
blinks  
Low priority alarm,  
Defined dive time exceeded.  
repeated twice; dive time Acknowledge the alarm by pressing  
value blinks  
any button.  
Low priority alarm.  
Maximum depth value  
blinks.  
Defined depth reached (Free dive  
mode only). Acknowledge the alarm  
by pressing any button.  
Low priority alarm,  
Duration of surface time until next  
dive (Free dive mode only).  
Acknowledge the alarm by pressing  
any button.  
Surface time value blinks.  
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Visual alarms  
Symbol on display  
Indication  
Attention - extend surface interval  
Violated decompression ceiling or  
bottom time is too long  
ER  
Do not fly  
3.4 Apnea timer  
You can use the apnea timer for interval training when freediving.  
You can adjust the following settings:  
Vent.: ventilation time; this is the starting duration of the time  
your breathing time. The time is increased by the increment time  
for each interval.  
Incr: increment time; this is added to the ventilation time for  
each interval. For example, if your ventilation time is 1:00  
minute and your increment time is 0:30 seconds, the first interval  
ventilation is 1:00, the second is 1:30, the third is 2:00, and so on.  
Repeats: number of intervals  
To adjust apnea timer settings:  
1. While in time mode, keep [UP] pressed to enter the apnea timer  
view.  
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2s  
2. Keep [DOWN] pressed to enter apnea timer settings.  
3. Adjust the ventilation time with [UP] or [DOWN] and confirm  
with [SELECT].  
4. Adjust the increment time with [UP] or [DOWN] and confirm  
with [SELECT].  
5. Adjust the number of intervals with [UP] or [DOWN] and confirm  
with [SELECT].  
To use the apnea timer:  
1. Press [SELECT] to start the first interval. The timer counts down  
the ventilation time. The countdown continues up to -0:30  
seconds beyond the defined ventilation time.  
2. Press [SELECT] to start the apnea cycle. You can start this at any  
time during the ventilation countdown.  
The apnea time is not defined in the watch. It is as long or short  
as you choose.  
3. Press [SELECT] again to start the next ventilation cycle.  
4. Repeat until the end of the defined number of intervals.  
5. Press [MODE] to exit the apnea timer.  
You can reset the apnea timer by keeping [SELECT] pressed.  
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The apnea timer supports up to 20 intervals, but this is dependent  
on the ventilation and increment times. The last ventilation cycle  
cannot be shorter than 0:05 seconds or longer than 20:00 minutes.  
WARNING: Anyone who engages in any form of breath hold  
diving is in danger of shallow-water blackout (SWB), the sudden  
loss of consciousness caused by oxygen starvation.  
3.5 Ascent rate  
The ascent rate is displayed as a vertical bar along the right side of  
the display.  
When the maximum allowed ascent rate is exceeded, the lower  
segment of the bar starts to blink and the top segment stays solid.  
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Continuous ascent rate violations result in mandatory safety stops.  
WARNING: DO NOT EXCEED THE MAXIMUM ASCENT RATE!  
Rapid ascents increase the risk of injury. You should always make  
the mandatory and recommended safety stops if you have exceeded  
the maximum recommended ascent rate. If the mandatory safety  
stop is not completed, the decompression algorithm penalizes your  
next dive(s).  
3.6 Backlight  
To active the backlight in dive mode, press [MODE].  
In other modes, keep [MODE] pressed until the backlight activates.  
You can define how long the backlight stays on when you activate  
it or turn the backlight off altogether.  
To set backlight duration:  
1. While in time mode, keep [DOWN] pressed.  
2. Press [DOWN] to scroll to BACKLIGHT and press [SELECT].  
3. Set duration or turn off with [DOWN] or [UP].  
4. Press [MODE] to save and exit to settings.  
NOTE: When the backlight is off, it does not illuminate when an  
alarm sounds.  
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3.7 Bookmarks  
At any time during a dive, you can add a bookmark to the dive log  
by pressing [SELECT].  
You can view bookmarks when scrolling the dive profile in the  
logbook.  
Each bookmark records present depth, time, water temperature,  
heading (if the compass is enabled), and tank pressure (if available).  
3.8 Calendar clock  
The calendar clock is the default mode of Suunto Vyper Novo .  
3.8.1 Time  
In the time settings, you can set the hours, minutes, seconds, and  
format (12 or 24-hour).  
To set time:  
1. While in time mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Time and press [SELECT].  
3. Set hours with [DOWN] or [UP] and confirm with [SELECT].  
4. Repeat for minutes and seconds.  
Set the format with [DOWN] or [UP] and confirm with [SELECT].  
5. Press [MODE] to exit.  
3.8.2 Date  
The date and weekday are shown in the bottom row of time mode.  
Press [DOWN] to toggle between views.  
To set the date:  
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1. While in time mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Date and press [SELECT].  
3. Set year with [DOWN] or [UP] and accept with [SELECT].  
4. Repeat for month and day.  
5. Press [MODE] to exit.  
3.8.3 Units  
In the units setting, choose whether the units are displayed in the  
metric or Imperial system.  
1. While in time mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Units and press [SELECT].  
3. Press [DOWN] to toggle between Metric and Imperial and  
confirm with [SELECT].  
4. Press [MODE] to exit.  
3.8.4 Dual time  
Dual time allows you to keep track of the time in a second time  
zone. Dual time is shown in the bottom left of the time mode  
display by pressing [DOWN].  
To set dual time:  
1. While in time mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Dual Time and press [SELECT].  
3. Set hours with [DOWN] or [UP] and confirm with [SELECT].  
4. Repeat for minutes.  
5. Press [MODE] to exit.  
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3.8.5 Alarm clock  
Suunto Vyper Novo has a daily alarm which can be set to activate  
once, on weekdays or every day.  
When the daily alarm activates, the screen blinks and the alarm  
sounds for 60 seconds. Press any button to stop the alarm.  
To set the daily alarm:  
1. While in time mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Alarm and press [Select.]  
3. Select alarm activation with [DOWN] or [UP] and confirm with  
[Select].  
The options are OFF, ONCE, WEEKDAYS, or EVERY DAY.  
4. Set hours with [DOWN] or [UP ]and confirm with [SELECT].  
5. Repeat for minutes.  
6. Press [MODE] to exit.  
3.9 Compass  
Suunto Vyper Novo includes a digital compass.  
The tilt-compensated compass gives you accurate readings even if  
the compass is not horizontally level.  
The compass can be activated from either time or dive mode and  
shows the current bearing and depth.  
1. While in TIME or DIVE mode, keep [SELECT] pressed to activate  
the compass.  
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2. Press [MODE] to exit the compass display.  
When in dive mode, the compass display includes additional  
information in the bottom left and right views.  
1. Press [DOWN] to scroll through the bottom left views. (tank  
pressure, max. depth, time)  
2. Press [UP] to scroll through the bottom right views. (dive time,  
temperature, bearing)  
3.9.1 Calibrating compass  
When you first start using Suunto Vyper Novo, the compass needs  
to be calibrated. Suunto Vyper Novo displays the calibration icon  
when you enter the compass.  
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Calibrate the compass by slowly rotating the unit in your hand in  
large figure-8 loops..  
During the calibration process, the compass adjusts itself to the  
surrounding magnetic field.  
If the calibration fails,Try Again appears. If calibration continues to  
fail, move to another location and try again.  
When traveling overseas, it is recommended that you recalibrate  
the compass at the new location before using it.  
To manually start the calibration:  
1. While in the compass view, keep [DOWN] pressed.  
2. Press [DOWN] to scroll to Calibration.  
3. Press [SELECT] to start the calibration.  
3.9.2 Setting declination  
You should always adjust your compass declination for the area  
where you are diving to get accurate heading readings. Check the  
local declination from a trusted source and set the value in Suunto  
Vyper Novo.  
1. While in the compass view, keep [DOWN] pressed.  
2. Press [DOWN] to scroll to DECLINATION and press [SELECT].  
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3. Press [DOWN] to toggle to East or West and confirm with  
[SELECT].  
4. Set Declination Degrees with [DOWN] or [UP].  
5. Press [MODE] to save and exit.  
3.9.3 Setting compass timeout  
You can define how long the compass stays on after you have  
activated it. Reset the timeout with any button press while using  
the compass.  
After the timeout, the Suunto Vyper Novo returns to time or dive  
mode.  
To set the timeout:  
1. While in the compass display, keep [DOWN] pressed.  
2. Press [DOWN] to scroll to Timeout and press [SELECT].  
3. Adjust the timeout time with [DOWN] or [UP].  
4. Press [MODE] to exit.  
3.9.4 Setting bearing lock  
A bearing is the angle between north and your target. In simple  
terms, it is the direction you want to travel. Your heading, on the  
other hand, is your actual direction of travel.  
The default bearing is North.  
You can set a bearing lock to help you orientate yourself  
underwater and ensure you maintain your direction of travel. For  
example, you can set a bearing lock for the direction to a reef  
before leaving the boat.  
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The last locked bearing is stored and available the next time the  
compass is activated. In DIVE mode, the locked bearings are also  
stored in the log. To lock a bearing:  
1. With the compass active, hold the watch in front of you and turn  
yourself towards your target.  
2. Press [SELECT] to lock the current degree displayed on the watch  
as your bearing.  
3. Press [SELECT] to clear the lock.  
If, at any point, your bearing moves outside the compass display,  
right or left arrows appear to show turn direction.  
Suunto Vyper Novo provides help for navigating square and  
triangular patterns, as well as navigating a return heading with the  
following symbols.  
Symbol  
Explanation  
You are traveling towards the locked  
bearing.  
You are 90 (or 270) degrees from the  
locked bearing.  
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Symbol  
Explanation  
You are 180 degrees from the locked  
bearing.  
You are 120 (or 240) degrees from the  
locked bearing.  
3.10 Display contrast  
You can adjust the contrast of the display according to your  
preference or, for example, to suite changing dive conditions.  
1. While in time mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Contrast and press [Select].  
3. Use [DOWN] or [UP] to change the contrast from 0 (lowest) to 10  
(highest).  
4. Press [MODE] to exit.  
3.11 Depth alarm  
By default the depth alarm sounds at 30 m (100 ft). You can adjust  
the depth according to your personal preference or switch it off.  
To adjust the depth alarm:  
1. While in a dive mode, keep [DOWN] pressed to enter settings.  
2. Press [UP] to scroll to Depth Alarm and press [SELECT].  
3. Press [UP] to toggle the alarm on/off and confirm with [SELECT].  
4. Adjust depth with [DOWN] or [UP] and accept with [SELECT].  
5. Press [MODE] to exit.  
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When the depth alarm activates, the backlight blinks and the low  
priority audible alarm pattern sounds. Acknowledge the alarm by  
pressing any button.  
3.12 Dive history  
Suunto Vyper Novo has a detailed logbook and dive history  
available in memory mode.  
The logbook contains a sophisticated dive profile for each recorded  
dive. The time between each data point saved in the log is based on  
the configurable sample rate (see 3.21 Sample rate).  
The dive history is a summary of all recorded dives.  
To access dive history:  
1. Press [MODE] until you see MEM.  
2. Switch between History and Logbook with [DOWN] or [UP].  
3. When you are viewing the history or logbook, you can press  
[MODE] to go back and select the other one. Press [MODE] a  
second time to exit.  
History  
When you have entered the dive history view, you can switch  
between Scuba History and FREE DIVE HISTORY with [DOWN] and  
[UP].  
Scuba dive history shows you a summary of the following:  
Dive hours  
Total number of dives  
Maximum depth  
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The scuba dive history records a maximum of 999 dives and 999  
diving hours. When these limits are reached, the counters reset to  
zero.  
Free dive history shows the following:  
the deepest and the longest dives of all free dives  
the cumulative dive time in hours and minutes  
the total number of dives  
The free dive history records a maximum of 999 dives and 99:59  
diving hours. When these limits are reached, the counters are reset  
to zero.  
Logbook  
To access the logbook:  
1. Press [MODE] three time until you come to MEM mode.  
2. Press [UP] to choose Logbook.  
3. Press [DOWN] or [UP] to scroll to the log you wish to look at and  
press [SELECT].  
4. Press [SELECT] to scroll through the pages.  
5. Press [MODE] to exit.  
Each log has three pages:  
1. Main page  
maximum depth  
35  
 
date of dive  
type of dive (indicated by first letter of dive mode, such as G  
for Gauge mode)  
dive start time  
dive number – from oldest to newest  
gas percentage(s) of the first used gas mix  
total dive time (in minutes in all modes)  
2. Surface time and warnings page  
maximum depth  
surface time after previous dive  
average depth  
consumed pressure (if enabled)  
warnings  
OLF% (if applicable)  
3. Dive profile graph  
water temperature  
tank pressure (if enabled)  
depth/time profile of the dive  
36  
 
Press [UP] to step through the dive profile graph or keep [UP]  
pressed to auto-scroll.  
The dive profile graph shows point by point dive information such  
as depth, compass heading, decompression info, ceiling and ascent  
time.  
The End of Logs text is displayed between the oldest and most  
recent dive.  
The logbook capacity depends on the sample rate. With the default  
setting (20 s) and without transmitter data the capacity is  
approximately 140 hours. With transmitter data the capacity is  
minimum 35 hours.  
If the memory is full, when new dives are added, the oldest dives  
are deleted.  
The contents of the memory remain when the battery is changed  
(providing that the battery has been replaced according to the  
instructions).  
NOTE: Several repetitive dives are considered to belong to the  
same repetitive dive series if the no-fly time has not ended.  
3.13 Dive modes  
Suunto Vyper Novo has the following dive modes:  
Air: for diving with regular air  
Nitrox: for diving using oxygen-enriched gas mixtures  
Gauge: for using the dive computer as a bottom timer  
Free: for freediving  
37  
 
 
Off: turns dive mode off completely; the dive computer does not  
automatically switch the dive mode when submerged and dive  
planning mode is hidden  
By default, Air mode is activated when you enter dive mode. You  
can change which mode is activated or turn dive mode off under  
the general settings.  
To change dive modes:  
1. While in time mode, keep [DOWN] pressed.  
2. Press [SELECT] to enter Dive Mode.  
3. Change to the desired mode with [UP] or [DOWN] and confirm  
with [SELECT].  
4. Press [MODE] to exit.  
Each dive mode has its own settings which you need to adjust while  
in the given mode.  
To modify dive mode settings:  
1. While in a given dive mode, keep [DOWN] pressed.  
2. Press [DOWN] or [UP] to scroll through the settings.  
3. Press [SELECT] to enter a setting.  
4. Adjust the setting with [DOWN] or [Up] and confirm with  
[SELECT].  
5. Press [MODE] to exit.  
NOTE: Some settings cannot be changed until five (5) minutes  
have elapsed after the dive.  
38  
 
3.13.1 Air mode  
Air mode is for diving with regular air and has the following  
settings:  
Personal/altitude adjustment (see 3.18 Personal and altitude  
Tank pressure (see 3.26 Tank pressure)  
Tank pressure alarm (see 3.26.4 Tank pressure alarm)  
Depth alarm (see 3.11 Depth alarm)  
Dive time alarm (see 3.16 Dive time alarm)  
Sample rate (see 3.21 Sample rate)  
Air time (see 3.2 Air time)  
3.13.2 Nitrox mode  
NITROX mode is for diving with oxygen-enriched gas mixtures.  
Diving with nitrox allows you to increase bottom times or reduce  
the risk of decompression illness. However, when the gas mix is  
altered or depth increased, the oxygen partial pressure is generally  
increased. Suunto Vyper Novo provides you with information to  
adjust your dive and stay within safe limits.  
NITROX mode has the following settings  
Nitrox (gas mixture): define up to three mixes  
Personal/altitude adjustment (see 3.18 Personal and altitude  
Depth alarm (see 3.11 Depth alarm)  
Dive time alarm (see 3.16 Dive time alarm)  
39  
 
   
Sample rate (see 3.21 Sample rate)  
Air time (see 3.2 Air time)  
In NITROX mode, both the percentage of oxygen in your tank and  
the oxygen partial pressure limit must be entered into Suunto Vyper  
Novo.  
This ensures correct nitrogen and oxygen calculations and the  
correct maximum operating depth (MOD), which is based on your  
entered values.  
The default oxygen percentage (O %) setting is 21% (air) and  
2
oxygen partial pressure (PO ) setting is 1.4 bar (20 psi).  
2
To modify gas mix settings:  
1. While in Nitrox mode, keep [DOWN] pressed.  
2. Press [SELECT] to enter the Nitrox setting.  
3. Scroll to Mix1, Mix2 or Mix3 as desired and press [SELECT].  
4. Define the selected mix as Primary, Secondary or Off with [UP]  
or [DOWN] and confirm with [SELECT].  
5. Adjust the blinking O value with [DOWN] or [UP] to match the  
2
oxygen % of your tank and accept with [SELECT].  
40  
 
6. Adjust the blinking PO (oxygen partial pressure) value with  
2
[DOWN] or [Up] and confirm with [SELECT].  
7. Adjust other mix settings as needed.  
8. Press [MODE] to exit.  
NOTE: If the oxygen content of a mix is set to 22% or above,  
the setting value remains until changed. It does not automatically  
revert back to 21%.  
Changing gases  
When more than one gas mix is defined you can change between  
the defined mixes during a dive.  
1. While in Nitrox mode, keep [DOWN] pressed.  
2. Press [SELECT] to enter the Nitrox setting.  
3. Scroll to Mix1, Mix2 or Mix3 as desired using [UP] or [DOWN]  
and press [SELECT] to select the desired mix.  
4. Define the selected mix as Primary, Secondary or Off with [UP]  
or [DOWN] and confirm with [SELECT].  
5. Adjust the blinking O value with [DOWN] or [UP] to match the  
2
oxygen % of your tank and accept with [SELECT].  
41  
 
6. Adjust the blinking PO (oxygen partial pressure) value with  
2
[DOWN] or [Up] and confirm with [SELECT].  
7. Adjust other mix settings as needed.  
8. Press [MODE] to exit.  
The gas mixes may be tagged as Primary, Secondary or Off. One of  
the gases is always set as Primary and the other gases may have any  
status. The decompression calculation is based on mixes that are  
defines as Primary gases.  
NOTE: It is only possible to change to another gas mix if the gas  
is within the set maximum oxygen partial pressure limit.  
3.13.3 Gauge mode  
With Gauge mode, you can use Suunto Vyper Novo as a bottom  
timer.  
The timer in the center of the display shows dive time in minutes  
and seconds and activates at the start of the dive. The total running  
dive time, in minutes, is in the lower right corner.  
The timer in the center of the display can be used as a stopwatch by  
pressing [SELECT] during the dive.  
Pressing [SELECT] resets the main timer and adds a bookmark to the  
dive log. The previously-timed interval is displayed below the main  
timer.  
42  
 
 
Gauge mode has the following settings  
Depth alarm (see 3.11 Depth alarm)  
Dive time alarm (see 3.16 Dive time alarm)  
Sample rate (see 3.21 Sample rate)  
Gauge mode is a bottom timer only and thus includes no  
decompression information or calculations.  
3.13.4 Free mode  
With Free mode, Suunto Vyper Novo can be used as a freediving  
instrument. The dive time is indicated in minutes and seconds in the  
center of the display.  
The free dive starts at 1.2 m (4 ft) and ends when your depth is less  
than 0.9 m (3 ft).  
Free mode has the following settings:  
Depth notifications (see 13.4.1 Depth notifications)  
Depth alarm (see 3.11 Depth alarm)  
Dive time alarm (see 3.16 Dive time alarm)  
Surface timer (see 3.24 Surface and no-fly time )  
Sample rate (see 3.21 Sample rate)  
43  
 
 
3.13.4.1 Depth notifications  
You can define up to five independent depth notifications for  
freediving, for example, to alert you to start free falling or mouth  
filling. Each notification has a defined depth and can be turned on  
or off.  
When you reach the notification depth, the backlight blinks and the  
low priority audible alarm sounds.  
To define depth notifications:  
1. While in Free mode, keep [DOWN] pressed.  
2. Press [SELECT] to enter the Depth Notify settings.  
3. Scroll through the notifications with [DOWN] or [UP] and enter a  
notification with [SELECT].  
4. Press [DOWN] or [UP] to toggle the notification On/Off and  
confirm with [SELECT].  
5. Adjust the depth with [DOWN] or [UP] and confirm with  
[SELECT].  
6. Scroll to the next notification to modify or press [MODE] to exit.  
3.13.4.2 Surface countdown timer  
While freediving, you can use the surface countdown timer to help  
you prepare yourself for you next dive. Suunto Vyper Novo starts  
the countdown as soon as you reach 1.2 m (4 ft).  
To set the surface countdown timer:  
1. While in Free mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Surf. Time Notify.  
44  
 
 
3. Press [DOWN] or [UP] to toggle the timer on and confirm with  
[SELECT].  
4. Adjust the countdown duration with [DOWN] or [UP] and  
conform with [SELECT].  
5. Press [MODE] to exit.  
3.14 Dive numbering  
If the Suunto Vyper Novo has not counted the no-fly time down to  
zero, then repetitive dives belong to the same dive series.  
Within each series, the dives are given numbers. The first dive of the  
series is DIVE 1, the second DIVE 2, and so on.  
If you start a new dive with less than five (5) minutes at the surface,  
Suunto Vyper Novo treats the new dive as part of the previous dive.  
The dive time continues where it left off.  
After five (5) minutes or more at the surface, any new dives are part  
of a repetitive dive series. The dive counter displayed in the  
planning mode adds one to each new dive in the repetitive series.  
The planning mode allows you to review the no-decompression  
limits on the next dive in a series.  
3.15 Dive planning mode  
The dive planning mode PLAN NoDeco can be used to plan a dive  
that does not require decompression. You enter the depth of your  
upcoming dive, and Suunto Vyper Novo calculates the maximum  
time you can stay at that depth without requiring decompression  
stops.  
45  
 
   
The dive plan takes into account:  
any calculated residual nitrogen  
dive history from the past four days  
To plan dives:  
1. Press [MODE] until you see PLAN NODEC.  
2. The display briefly shows your remaining desaturation time  
before continuing to the planning display.  
3. Press [DOWN] or [UP] to scroll your upcoming dive depths. The  
depth moves in 3 m (10 ft) increments from 9 m – 45 m (30 ft –  
150 ft). The no-decompression time limit for the selected depth  
is shown in the center of the display.  
If you have dived at least once with Suunto Vyper Novo, the  
SURFTIME + field appears. You can adjust the surface time with  
[UP].  
4. Between consecutive dives, you can press [SELECT] to adjust  
surface time.  
5. Press [MODE] to exit.  
NOTE: The dive planning mode is disabled if the dive computer  
dive mode is off or in Gauge mode.  
3.16 Dive time alarm  
The dive time alarm can be activated and used for several purposes  
to add to your diving safety. It is simply a countdown timer in  
minutes.  
46  
 
 
To set the dive time alarm:  
1. While in a relevant dive mode, keep [DOWN] pressed.  
2. Press [DOWN] or [UP] to scroll to ALARM TIME.  
3. Press [UP] to toggle the alarm on and press [SELECT] to confirm.  
4. Adjust the duration with [UP] or [DOWN] and accept with  
[SELECT].  
5. Press [MODE] to exit.  
3.17 Error state (algorithm lock)  
Suunto Vyper Novo has warning indicators that alert you to react to  
certain situations that would significantly increase the risk of DCI. If  
you do not respond to these warnings, Suunto Vyper Novo enters  
an error state and shows Er on the display. This indicates that the  
risk of DCI has greatly increased.  
If you omit decompression stops for longer than three (3) minutes,  
the RGBM algorithm is locked for 48 hours. When the algorithm is  
locked, no algorithm information is available and ER is shown  
instead. Locking the algorithm is a safety feature, highlighting that  
the algorithm information is no longer valid.  
47  
 
 
In such a condition, you should descend back below the ceiling level  
to continue the decompression. If you fail to do so within three (3)  
minutes, Suunto Vyper Novo locks the algorithm calculation and  
displays ER instead, as shown below. Note that the ceiling value is  
no longer present.  
In this state, you significantly increase your risk of decompression  
sickness (DCS). Decompression information is not available for the  
next 48 hours after surfacing.  
It is possible to dive with the device when the algorithm is locked,  
but instead of the decompression information, ER is shown.  
If you dive again in this error state, the algorithm lock time resets to  
48 hours when you surface.  
3.18 Personal and altitude adjustments  
There are several factors that can affect your susceptibility to DCS.  
Such factors vary between divers and from one day to another.  
The personal factors which tend to increase the possibility of DCS  
include:  
exposure to cold water - less than 20°C (68 °F)  
below average physical fitness level  
fatigue  
dehydration  
stress  
obesity  
patent foramen ovale (PFO)  
exercise before or after dive  
48  
 
 
The three-step personal setting can be used to adjust the algorithm  
to fit your DCS susceptibility.  
Personal adjustment  
Explanation  
0
Ideal conditions (default value).  
Conservative. Some risk factors or  
conditions exist.  
1
2
More conservative. Several risk factors  
or conditions exist.  
In addition to the personal setting, Suunto Vyper Novo can be  
adjusted for diving at different altitudes. This adjusts the  
decompression calculation according to the selected altitude  
adjustment.  
Altitude adjustment  
Explanation  
0
1
2
0 – 300 m (0 – 980 ft) (default)  
300 – 1500 m (980 – 4900 ft)  
1500 – 3000 m (4900 – 9800 ft)  
To change the personal and altitude adjustment settings:  
1. While in a dive mode, keep [DOWN] pressed.  
2. Press [SELECT] to enter Personal Altitude settings.  
49  
 
3. Press [UP] to change the Personal adjustment and confirm with  
[SELECT].  
4. Press [UP] to change the Altitude adjustment and confirm with  
[SELECT].  
5. Press [MODE] to exit.  
WARNING: Traveling to a higher altitude can temporarily cause  
changes to the equilibrium of dissolved nitrogen in the body. It is  
recommended that you acclimatize to the new altitude by waiting  
at least three (3) hours before diving.  
3.19 Power save mode  
Suunto Vyper Novo display turns off after 30 minutes of inactivity  
to save battery time. To turn the display back on, press any button.  
3.20 Safety stops and deepstops  
Safety stops are widely considered good diving practice and are a  
critical part of most dive tables. The reasons for performing a safety  
stop include: reducing sub-clinical DCI, microbubble reduction,  
ascent control, and orientation before surfacing.  
Suunto Vyper Novo displays two different types of safety stops:  
recommended and mandatory.  
With every dive over 10 meters (30 feet), there is a three-minute  
countdown for the recommended safety stop. This stop is taken in  
the 3-6 m (10-20 ft) range. Suunto Vyper Novo shows a STOP icon  
and a three-minute countdown.  
50  
 
   
NOTE: When deepstops are enabled, the length of mandatory  
safety stops is indicated in seconds.  
When the ascent rate exceeds 10 m (33 ft) per minute for more than  
five consecutive seconds, the microbubble build-up may be more  
than is allowed for in the decompression model.  
In this situation, Suunto Vyper Novo adds a mandatory safety stop  
to the dive. The time of this stop depends on the speed violation of  
the ascent rate.  
The STOP icon is shown in the display. When you reach the depth  
zone between 6 m and 3 m (18 ft and 9 ft) the following is  
displayed:  
1. CEILING and STOP  
2. Ceiling depth  
3. Safety stop time  
51  
 
Wait at the ceiling until the mandatory safety stop warning  
disappears.  
WARNING: NEVER ASCEND ABOVE THE CEILING! You must not  
ascend above the ceiling during your decompression. In order to  
avoid doing so by accident, you should stay somewhat below the  
ceiling.  
Deepstops activate when you dive deeper than 20 m (65.6 ft).  
If the dive timer is on the screen when deepstop activates, the timer  
is replaced with deepstop.  
After deepstop is over, the user can change between deepstop and  
the timer by long pressing the MODE button.  
Deepstops are presented the same way as safety stops. Suunto  
Vyper Novo notifies you that you are in the deepstop area by  
displaying:  
CEILING in the top  
DEEPSTOP in the center row  
Stop depth  
Countdown timer  
52  
 
Deepstop is on by default in Air and Nitrox modes. To turn  
deepstop off:  
1. While in a dive mode, keep [DOWN] pressed.  
2. Press [DOWN] to scroll to Deepstop and enter with [Select].  
3. Press [UP] to toggle on/off.  
4. Press [MODE] to exit.  
3.21 Sample rate  
The sample rate controls how often information from the dive is  
saved to the active log. The default sample rate is 20 seconds in air  
and nitrox modes, and 2 seconds in free dive mode.  
To change the sample rate:  
1. While in a dive mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Sample Rate and press [SELECT].  
3. Press [DOWN] or [UP] to change the rate and confirm with  
[SELECT].  
4. Press MODE to exit.  
The sample rate options in air and nitrox modes are: 10, 20, 30 and  
60 seconds.  
The sample rate options in free dive mode are: 1, 2 and 5 seconds.  
53  
 
 
3.22 Software version  
You can check the software version and battery status of Suunto  
Vyper Novo under the general settings.  
1. While in time mode, keep [DOWN] pressed.  
2. Press [UP] to scroll to Version and press [SELECT].  
3. The software version is displayed along with the battery voltage.  
3.23 Stopwatch  
The stopwatch can be used to measure elapsed and split times.  
To activate the stopwatch:  
1. While in time mode, scroll through the bottom row view by  
pressing [UP] or [DOWN] until the stopwatch is displayed.  
2. Press [SELECT] to start/stop the stopwatch.  
3. Press [DOWN] to take split times.  
4. Keep [SELECT] pressed to reset the stopwatch.  
After stopping the stopwatch, you can scroll through the split times  
with [DOWN].  
54  
 
   
You can also use the stopwatch while diving for various timing  
purposes. To activate the stopwatch in dive mode, keep [MODE]  
pressed.  
Start and stop the stopwatch by pressing [SELECT].  
NOTE: If a deepstop activates while you are using the  
stopwatch, the timer field is not visible.  
3.24 Surface and no-fly time  
Once back at the surface, Suunto Vyper Novo continues to provide  
post-dive safety information and alarms. If, after your dive, you  
need to wait until flying, the no-fly symbol displays in all modes.  
To access further information about your surface and no-fly times,  
enter dive mode.  
Suunto Vyper Novo shows the time since you surfaced in the Surf t.  
field. The airplane symbol indicates that you should not fly. The  
countdown until you will be safe to fly is shown in the No Fly field.  
55  
 
 
No-fly time is always at least 12 hours and equals desaturation time  
when it is more than 12 hours. For desaturation times shorter than  
70 minutes, the no-fly time is not displayed.  
If decompression is omitted during a dive so that Suunto Vyper  
Novo enters error state (see 3.17 Error state (algorithm lock)), the  
no-fly time is always 48 hours.  
If a dive is done in Gauge mode (bottom timer), the no-fly time is 48  
hours.  
WARNING: YOU ARE ADVISED TO AVOID FLYING ANY TIME THE  
COMPUTER COUNTS DOWN THE NO-FLY TIME. ALWAYS ACTIVATE  
THE COMPUTER TO CHECK THE REMAINING NO-FLY TIME PRIOR TO  
FLYING! Flying or traveling to a higher altitude within the no-fly  
time can greatly increase the risk of DCS. Review the  
recommendations given by Divers Alert Network (DAN). There can  
never be a flying-after-diving rule that is guaranteed to completely  
prevent decompression sickness!  
The Divers Alert Network (DAN) recommends the following on no-  
fly times:  
56  
 
A minimum surface interval of 12 hours would be required in  
order to be reasonably assured a diver will remain symptom free  
upon ascent to altitude in a commercial jetliner (altitude up to  
2,400 m (8,000 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 a flight. Further, the Undersea and Hyperbaric Medical  
Society (UHMS) suggests divers using standard air cylinders and  
exhibiting no symptoms of decompression sickness wait 24 hours  
after their last dive to fly in an aircraft with cabin pressure up to  
2,400 m (8,000 ft). The only two exceptions to this  
recommendation are:  
If a diver has less than two (2) hours total accumulated dive  
time in the last 48 hours, 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, as well as the dive computer’s no-fly conditions,  
are satisfied.  
3.25 Suunto RGBM  
Suunto's decompression model development originates from the  
1980s when Suunto implemented Bühlmann's model based on M-  
57  
 
 
values in Suunto SME. Since then research and development has  
been ongoing with the help of both external and internal experts.  
In the late 1990s, Suunto implemented Dr. Bruce Wienke's RGBM  
(Reduced Gradient Bubble Model) bubble model to work with the  
earlier M-value based model. The first commercial products with the  
feature were the iconic Suunto Vyper and Suunto Stinger. With  
these products the improvement of diver safety was significant as  
they addressed a number of diving circumstances outside the range  
of dissolved-gas-only models by:  
Monitoring continuous multiday diving  
Computing closely spaced repetitive diving  
Reacting to a dive deeper than the previous dive  
Adapting to rapid ascents which produce high microbubble  
(silent-bubble) build-up  
Incorporating consistency with real physical laws for gas kinetics  
The Suunto RGBM predicts both dissolved and free gas in the blood  
and tissues of divers. It is a significant advancement on the classic  
Haldane models, which do not predict free gas. The Suunto RGBM  
provides additional safety through its ability to adapt to a variety of  
situations and dive profiles.  
3.25.1 Diver Safety  
Because any decompression model is purely theoretical and does  
not monitor the actual body of a diver, no decompression model  
can guarantee the absence of DCS. Experimentally it has been  
shown that the body adapts to decompression to some degree  
when diving is constant and frequent. Personal adjustment settings  
58  
 
 
are available for divers who dive constantly and are ready to accept  
greater personal risk.  
CAUTION: Always use the same personal and altitude  
adjustment settings for the actual dive and for the planning.  
Increasing the personal adjustment setting from the planned  
setting as well as increasing the altitude adjustment setting can  
lead to longer decompression times deeper and thus to larger  
required gas volume. You can run out of breathing gas underwater  
if the personal adjustment setting has been changed after dive  
planning.  
3.25.2 Altitude diving  
The atmospheric pressure is lower at high altitudes than at sea  
level. After traveling to a higher altitude, you will have additional  
nitrogen in your body, compared to the equilibrium situation at the  
original altitude. This 'additional' nitrogen is released gradually  
over time and equilibrium is restored. It is recommended that you  
acclimatize to a new altitude by waiting at least three hours before  
making a dive.  
Before high-altitude diving, you need to adjust the altitude settings  
of your dive computer so that the calculations take into account the  
high 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.  
59  
 
 
WARNING: SET THE CORRECT ALTITUDE SETTING! When diving  
at altitudes greater than 300 m (1000 ft), the altitude setting 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 setting or diving above the maximum altitude limit  
will result in erroneous dive and planning data.  
3.25.3 Oxygen exposure  
The oxygen exposure calculations are based on currently accepted  
exposure time limit tables and principles.  
The dive computer calculates separately the Central Nervous System  
oxygen toxicity (CNS) and the Pulmonary Oxygen toxicity, the latter  
measured by the addition of Oxygen Toxicity Units (OTU).  
Both fractions are scaled so that the diver’s maximum tolerated  
exposure for each is 100%.  
Suunto Vyper Novo does not display CNS% or OTU% but instead  
displays the larger of the two in the OLF% field. OLF% value is the  
Oxygen limit fraction or Oxygen Toxicity Exposure.  
For example, it the diver’s maximum tolerated exposure for CNS% is  
85% and the maximum tolerated exposure for OUT% is 80% the  
OLF% displays the largest scaled value, here 85%.  
Oxygen related information displayed by the dive computer is also  
designed to ensure that all warnings and displays occur at the  
appropriate phases of a dive.  
60  
 
 
WARNING: WHEN THE OXYGEN LIMIT FRACTION INDICATES  
THAT THE MAXIMUM LIMIT IS REACHED, YOU MUST IMMEDIATELY  
TAKE ACTION TO REDUCE OXYGEN EXPOSURE. Failure to take  
action to reduce oxygen exposure after a CNS%/OTU warning is  
given can rapidly increase the risk of oxygen toxicity, injury, or  
death.  
3.26 Tank pressure  
When using the optional Suunto Wireless Transmitter, the pressure  
of your tank is shown in the lower left of the display.  
Whenever you start a dive, the remaining air time calculation  
begins. After 30-60 seconds, the first estimation of remaining air  
time is shown in the left center of the display.  
The calculation is always based on the actual pressure drop in your  
tank and automatically adapts to your tank size and current air  
consumption.  
The change in your air consumption is based on constant one  
second interval pressure measurements over periods of 30–60  
61  
 
 
seconds. An increase in air consumption decreases the remaining air  
time rapidly, while a drop in air consumption increases the air time  
slowly. In this way, an overly optimistic air time estimate, 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 a small reserve.  
NOTE: Filling your BCD affects the air time calculation due to  
the temporary increase in air consumption.  
The remaining air time is not displayed when either deepstops or  
the decompression ceiling has been activated. You can check  
remaining air time by keeping [DOWN] pressed.  
Temperature changes affect the tank pressure and consequently the  
air time calculation.  
Low air pressure warnings  
The dive computer warns you with two (2) audible double beeps  
and a blinking pressure display when the tank pressure reaches 50  
bar (700 psi).  
Two (2) double beeps sound when the tank pressure reaches the  
defined alarm pressure and when the remaining time reaches zero.  
3.26.1 Wireless transmission  
To enable wireless transmission of tank pressure data to Suunto  
Vyper Novo requires:  
62  
 
 
1. Installation of Suunto Wireless Transmitter onto your regulator.  
2. Pairing the transmitter to your Suunto Vyper Novo.  
3. Enabling the wireless integration in your Suunto Vyper Novo  
settings.  
The transmitter enters power saving mode with slower data  
transmission rate if the tank pressure remains unchanged for more  
than five (5) minutes.  
The optional transmitter sends out a low battery (batt) warning  
when its battery voltage is getting low. This is shown intermittently  
instead of the pressure reading. When you get this warning, the  
tank pressure transmitter's battery needs to be replaced.  
3.26.2 Installing and pairing transmitter  
When purchasing the Suunto Wireless Transmitter, we strongly  
recommend that you have your Suunto representative attach the  
transmitter to the first stage of your regulator.  
The unit needs to be undergo a pressure test after installation and  
typically this requires a trained technician.  
In order to receive wireless data, the transmitter and the Suunto  
Vyper Novo need to be paired.  
The wireless transmitter activates when the tank pressure exceeds  
15 bar (300 psi). The transmitter then starts sending pressure data  
together with a code number.  
When your Suunto Vyper Novo is within 0.3 m (1 ft) of the  
transmitter, it receives and stores that code. The transmitter and  
Suunto Vyper Novo are now paired. Suunto Vyper Novo will then  
display the pressure data it receives with this code. This coding  
63  
 
 
procedure prevents data mix-up from other divers also using a  
Suunto Wireless Transmitter.  
NOTE: The pairing procedure normally only needs to be done  
once. You may need to redo the pairing procedure if another diver  
in your group uses the same code.  
To assign a new transmitter code:  
1. Slowly open the tank valve fully to pressurize the system.  
2. Immediately close the tank valve.  
3. Quickly depressurize the regulator so that the pressure is  
reduced to less than 10 bar (145 psi).  
4. Wait about 10 seconds, and slowly open the tank valve again to  
re-pressurize above 15 bar (300 psi).  
The transmitter assigns a new code automatically. To re-pair the  
transmitter with your Suunto Vyper Novo:  
1. While in a dive mode other than Free or Gauge, keep [DOWN]  
pressed to enter the settings.  
2. Press [DOWN] to scroll to Tank Press Pairing and press SELECT.  
3. Make sure TANK PRESS PAIRING is set to ON and press [SELECT].  
4. A code number is displayed. Press [UP] to clear the code.  
5. Press [SELECT].  
6. Press [MODE] to exit.  
With the system pressurized to above 15 bar (300 psi), bring your  
Suunto Vyper Novo close to the transmitter. When pairing is  
completed, the dive computer displays the new code number and  
the transmitted tank pressure.  
64  
 
The wireless transmitter indicator is displayed every time a valid  
signal is received.  
3.26.3 Transmitted data  
After pairing, your Suunto Vyper Novo receives tank pressure data  
from the transmitter.  
Any time the Suunto Vyper Novo receives a signal, one of the  
following symbols is shown in the lower left corner of the display.  
Display  
Cd:--  
Indication  
No code stored, the dive computer is ready  
for pairing with the transmitter.  
Current code number. Code number can be  
from 01 to 40.  
Cd:10  
- - -  
The flash symbol is blinking. Pressure  
reading exceeds allowed limit (over 360 bar  
(5220 psi)).  
no conn  
Text no conn is displayed when the unit  
receives no data from the transmitter.  
The pressure reading has not been updated  
for over a minute. The last received  
pressure blinks on and off. The flash  
symbol is not displayed.  
This state may be caused by the :  
65  
 
 
Display  
Indication  
1. Transmitter being out of range (>1.2 m  
(4 ft))  
2. Transmitter is in power saving mode  
3. Transmitter is on another channel. To  
correct this:  
batt  
Pressure transmitter battery voltage is low.  
Change the transmitter battery!  
3.26.4 Tank pressure alarm  
There are two tank pressure alarms. The first is fixed at 50 bar (700  
psi) and cannot be changed.  
The second is user configurable. It can be turned on or off and can  
be used for a pressure range of 10–200 bar (200-3000 psi).  
To set the tank pressure alarm value:  
1. While in a dive mode, keep [DOWN] pressed to enter settings.  
2. Press [DOWN] to scroll to Tank Press Alarm and press [SELECT].  
3. Press [UP] to turn the alarm on and confirm with [SELECT].  
4. Adjust the pressure level with [UP] or [DOWN] and confirm with  
[SELECT].  
5. Press [MODE] to exit.  
3.27 Tones  
Device tones can be turned on or off. When tones are off, there are  
no audible alarms.  
66  
 
   
To set tones:  
1. While in time mode, keep [DOWN] pressed.  
2. Press [DOWN] or [UP] to scroll to Tones and press [SELECT].  
3. Press [DOWN] or [UP] to toggle on/off and confirm with  
[SELECT].  
4. Press [MODE] to exit.  
3.28 Water contact  
The water contact is located on the side of the case. When  
submerged, the water contact poles are connected by the  
conductivity of the water. Suunto Vyper Novo switches to dive state  
when water is detected and the depth gauge senses water pressure  
at 1.2 m (4 ft).  
AC  
The AC is shown until the water contact deactivates. It is important  
to keep the water contact area clean. Contamination or dirt can  
prevent automatic activation/deactivation. See 4.1 Handling  
67  
 
 
NOTE: Moisture build-up around the water contact may cause  
the dive mode to activate. This can happen, for example, when  
washing your hands or sweating. To save battery power, deactivate  
the water contact by cleaning it and/or drying it with a soft towel.  
68  
 
4 CARE AND SUPPORT  
4.1 Handling guidelines  
The Suunto Vyper Novo dive computer is a sophisticated precision  
instrument. Although it is designed to withstand the rigors of  
diving, you must treat it with the same proper care and caution as  
any other precision instrument.  
Handle the unit with care – do not knock or drop it.  
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.  
After use, rinse it with fresh water, mild soap, and carefully clean  
the housing with a moist soft cloth or chamois.  
Use only original Suunto accessories - damage caused by non-  
original accessories is not covered by warranty.  
Keep the water contact and depth sensors areas on the sides of the  
watch clean using fresh water and a soft brush, such as a  
toothbrush.  
Never try to open the case of the dive computer. Have your Suunto  
Vyper Novo serviced every two years or after 200 dives (whichever  
comes first) by an authorized Suunto service center.  
This service includes a general operational check, replacement of  
the battery, and water resistance check. The service requires special  
tools and training. Do not attempt to do any servicing yourself.  
69  
 
   
Should moisture appear inside the case or battery compartment,  
immediately have the instrument checked by your Suunto service  
center.  
The optional scratch guard for Suunto Vyper Novo is designed to  
help prevent the display from getting scratched. Scratch guards can  
be purchased separately from your authorized Suunto dealer.  
Should you detect scratches, cracks or other such flaws on the  
display that may impair its durability, immediately contact your  
authorized Suunto dealer.  
Protect the unit from shock, extreme heat, direct sunlight, and  
chemicals.  
Store your dive computer in a dry place when you are not using it.  
4.2 Battery replacement  
Suunto Vyper Novo displays a battery symbol as a warning when  
the power gets too low. When this happens, your Suunto Vyper  
Novo should not be used for diving until the battery has been  
replaced.  
Contact an authorized Suunto service center for battery  
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.  
Defects caused by improper battery installation are not covered by  
the warranty.  
70  
 
 
All history and logbook data, as well as the altitude, personal and  
alarm settings, remain in the dive computer memory after the  
battery change. Other settings revert back to default values.  
4.3 Changing strap to bungee  
Use the optional bungee adapter to change between wrist strap  
and bungee cord as needed.  
To install the bungee:  
1. Turn the dive computer over.  
2. Remove each strap by depressing one end of the spring bar with  
a small flat-head screwdriver or spring bar removal tool.  
3. Attach the bungee adapters to each side of the case with the  
spring bars. Ensure the spring bars are firmly in position by  
pushing down on each end of the bar.  
4. Thread the bungee cord through the adapters and securely tie  
the ends.  
5. Pull hard on the bungee to ensure the adapters are in position  
and the cord knot is tight.  
Watch the video on YouTube.  
71  
 
 
5 REFERENCE  
5.1 Technical specifications  
Dimensions and weight (with boot and display shield)  
Length: 71.2 mm (2.8 in)  
Width: 71.2 mm (2.8 in)  
Height: 31.3 mm (1.2 in)  
Weight: 133.9 g (4.7 oz)  
Operating conditions  
Water resistance: 80 m (262 ft) (complying with EN 13319)  
Normal altitude range: 0 to 3,000 m (0 to 10,000 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)  
Maintenance cycle: 200 hours of diving or two years, whichever  
comes first  
Depth gauge  
Temperature compensated pressure sensor  
Accurate to 80 m (262 ft) complying with EN 13319  
Depth display range: 0 to 300 m (0 to 984 ft)  
Resolution: 0.1 m from 0 to 100 m (1 ft from 0 to 328 ft)  
Temperature display  
Resolution: 1 °  
Display range: -20 °C to +50 °C (-4 °F to +122 °F)  
72  
 
   
Accuracy: 2 °C ( 3.6 °F) within 20 minutes of temperature  
change  
Nitrox mode  
Oxygen: 21–50%  
Partial pressure of oxygen (pO2): 0.2 – 3.0  
Oxygen Limit Factor: 0–200% with 1% resolution  
Gas mixtures: up to 3  
Other displays  
Dive time: 0 to 999 min  
Surface time: 0 to 99 h 59 min  
Dive counter: 0 to 99 for repetitive dives  
No-decompression time: 0 to 99 min (-- after 99)  
Ascent time: 0 to 999 min (-- after 999)  
Ceiling depths: 3.0 to 150 m (10 to 492 ft)  
Calendar clock  
Accuracy: 25 s/month (at 20 °C/68 °F)  
12/24 h display  
Compass  
Accuracy: +/- 15°  
Resolution: 1°  
Max. tilt: 45 degrees  
Balance: global  
Stopwatch  
Accuracy: 1 second  
Display range: 0’00 – 99’59  
73  
 
Resolution: 1 second  
Logbook  
Sample rate in air and nitrox modes: default 20 seconds  
Sample rate in free diving mode: default 2 seconds  
Memory capacity: approximately 140 hours with 20-second  
recording interval and without transmitter data. In free dive  
mode, maximum capacity is 35 hours.  
Tissue calculation model  
Suunto RGBM  
Maximum depth of operation: 120 m (393 ft)  
5.2 Compliance  
5.2.1 CE  
Suunto Oy hereby declares that this product is in compliance with  
the essential requirements and other relevant provisions of  
Directive 1999/5/EC.  
5.2.2 EN 13319  
EN 13319 is a European diving depth gauge standard. Suunto dive  
computers are designed to comply with this standard.  
5.2.3 EN 250 and FIOH  
The tank pressure gauge and dive instrument parts used in  
measuring the tank pressure meet the requirements set in the  
section of the European Standard EN 250 that concern tank pressure  
74  
 
       
measurements. FIOH, notified body no.0430, has EC type-examined  
this type of personal protective equipment.  
5.3 Trademark  
Suunto Vyper Novo, its logos, and other Suunto brand trademarks  
and made names are registered or unregistered trademarks of  
Suunto Oy. All rights are reserved.  
5.4 Patent notice  
This product is protected by pending patent applications and their  
corresponding national rights: US 5,845,235, US 7,349,805, US  
8,660,826. Additional patent applications may be filed.  
5.5 Warranty  
Suunto warrants that during the Warranty Period Suunto or a  
Suunto Authorized Service Center (hereinafter Service Center) will,  
at its sole discretion, remedy defects in materials or workmanship  
free of charge either by a) repairing, or b) replacing, or c)  
refunding, subject to the terms and conditions of this Limited  
Warranty. This Limited Warranty is only valid and enforceable in the  
country of purchase, unless local law stipulates otherwise.  
Warranty Period  
The Limited Warranty Period starts at the date of original retail  
purchase. The Warranty Period is two (2) years for Products unless  
otherwise specified.  
75  
 
     
The Warranty Period is one (1) year for accessories including but not  
limited to wireless sensors and transmitters, chargers, cables,  
rechargeable batteries, straps, bracelets and hoses.  
Exclusions and Limitations  
This Limited Warranty does not cover:  
1. a) normal wear and tear such as scratches, abrasions, or  
alteration of the color and/or material of non-metallic straps, b)  
defects caused by rough handling, or c) defects or damage  
resulting from use contrary to intended or recommended use,  
improper care, negligence, and accidents such as dropping or  
crushing;  
2. printed materials and packaging;  
3. defects or alleged defects caused by use with any product,  
accessory, software and/or service not manufactured or supplied  
by Suunto;  
4. non-rechargeable batteries.  
Suunto does not warrant that the operation of the Product or  
accessory will be uninterrupted or error free, or that the Product or  
accessory will work with any hardware or software provided by a  
third party.  
This Limited Warranty is not enforceable if the Product or accessory:  
1. has been opened beyond intended use;  
2. has been repaired using unauthorized spare parts; modified or  
repaired by unauthorized Service Center;  
3. serial number has been removed, altered or made illegible in  
any way, as determined at the sole discretion of Suunto; or  
76  
 
4. has been exposed to chemicals including but not limited to  
sunscreen and mosquito repellents.  
Access to Suunto warranty service  
You must provide proof of purchase to access Suunto warranty  
service. For instructions how to obtain warranty service, visit  
retailer, or call Suunto Contact Center.  
Limitation of Liability  
To the maximum extent permitted by applicable mandatory laws,  
this Limited Warranty is your sole and exclusive remedy and is in  
lieu of all other warranties, expressed or implied. Suunto shall not  
be liable for special, incidental, punitive or consequential damages,  
including but not limited to loss of anticipated benefits, loss of  
data, loss of use, cost of capital, cost of any substitute equipment or  
facilities, claims of third parties, damage to property resulting from  
the purchase or use of the item or arising from breach of the  
warranty, breach of contract, negligence, strict tort, or any legal or  
equitable theory, even if Suunto knew of the likelihood of such  
damages. Suunto shall not be liable for delay in rendering warranty  
service.  
5.6 Copyright  
Copyright © Suunto Oy. All rights reserved. Suunto, Suunto product  
names, their logos and other Suunto brand trademarks and names  
are registered or unregistered trademarks of Suunto Oy. This  
document and its contents are proprietary to Suunto Oy and are  
77  
 
 
intended solely for the use of clients to obtain knowledge and  
information regarding the operation of Suunto products. Its  
contents shall not be used or distributed for any other purpose  
and/or otherwise communicated, disclosed or reproduced without  
the prior written consent of Suunto Oy. While we have taken great  
care to ensure that information contained in this documentation is  
both comprehensive and accurate, no warranty of accuracy is  
expressed or implied. This document content is subject to change at  
any time without notice. The latest version of this documentation  
5.7 Terms  
Term  
What it means  
A dive made at an elevation greater than 300 m  
(1000 ft) above sea level.  
Altitude dive  
The speed at which the diver ascends toward the  
surface.  
Ascent rate  
Ascent time  
The minimum amount of time needed to reach  
the surface on a decompression stop dive.  
On a decompression stop dive, the shallowest  
depth to which a diver may ascend based on  
computed inert gas load.  
Ceiling  
CNS  
Central nervous system toxicity. Toxicity is caused  
by oxygen. Can cause a variety of neurological  
78  
 
 
Term  
What it means  
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.  
Compartment See "Tissue group".  
Suunto DM5 with Movescount, a software for  
DM5  
managing your dives.  
Time spent at a decompression stop, or range,  
Decompression before surfacing, to allow absorbed nitrogen to  
escape naturally from tissues.  
On a decompression stop dive, the depth range  
Decompression  
between the floor and the ceiling within which a  
range  
diver must stop for some time during ascent.  
Decompression sickness/illness. Any of a variety  
of maladies resulting either directly or indirectly  
DCS  
from the formation of nitrogen bubbles in tissues  
or body fluids, as a result of inadequately  
controlled decompression.  
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 series  
79  
 
Term  
What it means  
Elapsed time between leaving the surface to  
descend, and returning to the surface at the end  
of a dive.  
Dive time  
The deepest depth during a decompression stop  
dive at which decompression takes place.  
Floor  
He%  
Helium percentage or helium fraction in the  
breathing gas.  
Maximum operating depth of a breathing gas is  
the depth at which the partial pressure of  
MOD  
oxygen (PO ) of the gas mix exceeds a safe limit.  
2
A single or repetitive dive that includes time  
spent at various depths and whose no  
Multi level dive decompression limits are therefore not  
determined solely by the maximum depth  
attained.  
In sports diving, refers to any mix with a higher  
Nitrox (Nx)  
fraction of oxygen than standard air.  
No deco (No  
Any dive which permits a direct, uninterrupted  
decompression  
ascent to the surface at any time.  
stop time)  
No dec time  
OC  
Abbreviation for no decompression time limit.  
Open-circuit. Scuba that exhausts all exhaled gas.  
80  
 
Term  
What it means  
Oxygen limit fraction. The diver’s current oxygen  
toxicity exposure.  
OLF%  
Oxygen percentage or oxygen fraction in the  
breathing gas. Standard air has 21% oxygen.  
O %  
2
Limits the maximum depth to which the nitrox  
mixture can be safely used. The maximum partial  
Partial pressure pressure limit for enriched air diving is 1.4 bar (20  
of oxygen (O2) psi). The contingency partial pressure limit is 1.6  
bar (23 psi). Dives beyond this limit risk  
immediate oxygen toxicity.  
Reduced  
gradient  
Modern algorithm for tracking both dissolved  
bubble model and free gas in divers.  
(RGBM)  
Any dive whose decompression time limits are  
Repetitive dive affected by residual nitrogen absorbed during  
previous dives.  
Residual  
nitrogen  
The amount of excess nitrogen remaining in a  
diver after one or more dives.  
Scuba  
Self-contained underwater breathing apparatus.  
Elapsed time between surfacing from a dive and  
beginning a descent for the subsequent dive.  
Surface time  
81  
 
Term  
What it means  
Theoretical concept used to model bodily tissues  
for the construction of decompression tables or  
calculations.  
Tissue group  
A breathing gas mix of helium, oxygen and  
nitrogen.  
Trimix  
82  
 
INDEX  
Date, 26  
A
decompression, 57, 59  
Decompression  
Safety, 58  
Activation  
pre-checks, 14  
Air mode, 39  
Alarm, 28  
deepstop  
safety stop, 50  
Depth alarm, 33  
display, 11  
Alarms, 18  
Altitude adjustment, 48  
Apnea timer, 22  
Ascent rate, 24  
Display  
contrast, 33  
Dive history  
Memory mode, 34  
Dive modes, 37  
Air, 39  
Free, 43  
Gauge, 42  
Nitrox, 39  
B
Backlight, 25  
Battery, 70  
indicators, 16  
Bearing, 31  
Bookmarks, 26  
Bungee, 71  
Dive numbering  
Plan, 45  
Dive planning, 45  
Dive time alarm, 46  
Diving mode  
Air, 17  
C
Calendar clock, 26  
Compass, 28, 31  
Calibrate, 29  
declination, 30  
timeout, 31  
E
D
83  
 
 
Error State  
Er, 47  
Notifications, 18  
O
F
Oxygen toxicity, 60  
Free mode, 43  
P
Depth notifications, 44  
surface countdown timer, 44  
Personal adjustment, 48  
R
G
RGBM, 57  
Gauge mode, 42  
Glossary, 78  
S
safety stop, 24  
Sample rate, 53  
save battery, 50  
Set up, 13  
software version, 54  
Stopwatch, 54  
Surface time, 55  
H
handling  
care, 69  
high-altitude diving, 59  
I
Icon, 11  
L
T
Logbook, 34  
Tank pressure, 61  
Wireless transmission, 62  
Tank pressure alarm, 66  
Time, 26  
M
modes  
change modes, 11  
Modes  
Dual time, 27  
Time mode, 26  
Tones, 66  
Dive, 37  
N
U
Nitrox mode, 39  
No-fly time, 55  
units, 27  
84  
 
W
Warnings, 18  
Water contact  
AC symbol, 67  
Wireless transmitter  
installing, 63  
pairing, 63  
transmitted data, 65  
Wireless Transmitter, 16  
85  
 
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