User's Guide | Mares NEMO AIR User`s guide

NEMO WIDE
User’s Guide
Dive Computer
Puck
Nemo Wide dive computer
• TABLE OF CONTENTS
QUICK GUIDE
NEMO WIDE DIVE COMPUTER
IMPORTANT WARNINGS
Responsible Diving Practices
HOW THE NEMO WIDE DIVE COMPUTER WORKS SETTING PARAMETERS FOR THE NEMO WIDE DIVE COMPUTER
Adjusting the watch: WATCHSET
Adjusting dive parameters: SET DIVE
SET DIVE - DATA SET DIVE - MODE AIR
EAN
BOTTOM TIME
CONTROLLING THE TIME SETTINGS
DIVING WITH NEMO WIDE
PREDIVE - AIR
DIVE – AIR: “NO-DECOMPRESSION” DIVE DIVE – AIR: “DECOMPRESSION STOP” DIVE TIME TO SURFACE (ASC TIME)
DECOMPRESSION STOPS
ASCENT
SAFETY STOP
2
3
3
3
4
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5
5
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6
6
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7
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SURFACING - AIR
SURFACE MODE - AIR
DIVE - EAN MONITORING OF THE GENERAL DIVE PARAMETERS
PREDIVE - EAN
DIVE – EAN: “NO-DECOMPRESSION” DIVE
DIVE – EAN “DECOMPRESSION STOP” DIVE
SURFACING – EAN
SURFACE MODE – EAN
DIVE - BOTTOM TIME (GAUGE)
SURFACE MODE – BOTTOM TIME
BOTTOM TIME WITH BEHAVIOR ERROR
PLANNING: SCROLLING OF NO DECOMPRESSION LIMITS
LOG BOOK
PC MODE OFF MODE
FAQ
MAINTENANCE
TECHNICAL/FUNCTIONAL CHARACTERISTICS
WARRANTY
DISPOSAL OF THE DEVICE
• QUICK GUIDE
1 + button
2 - button
3 ESC button
4 ENTER button
5 DIVE - maximum depth
6 DIVE - depth
7 DIVE - DEEP STOP depth
DIVE - decompression stop depth
DIVE - Minutes remaining for the safety stop
8 DIVE - % CNS
9 DIVE - % oxygen
10 DIVE - no-decompression time remaining
DIVE - duration of the decompression stop
DIVE - DEEP STOP time remaining
11 No-decompression dive indicator (NO DECO)
Decompression-stop diving indicator (DECO)
12 DEEP STOP Indicator
13 Decompression stop indicator
14 Total ascent time
15 Altitude level
16 “No fly” indicator
17 Low battery indicator
18 Personal correction factor
19 Omitted stop indicator
20 Uncontrolled ascent indicator
21 % ascent speed
22 Ascent speed
23 Dive time
24 Display bar:
various types of information are displayed based on usage.
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• NEMO WIDE DIVE COMPUTER
Congratulations!
Your new Nemo Wide Dive Computer is the
result of the latest Mares technology, and has
been designed to guarantee maximum safety,
efficiency, reliability and long life.
Simple and easy to use, it is ideal for all types
of dives.
This manual contains all the instructions for
its use.
Mares thanks you for your choice and urges
you to always practice safe and responsible
diving.
Enjoy!
No part of this document may be reproduced,
stored in a retrieval system, or transmitted
in any form without the written permission of
Mares S.p.A.
Mares adopts a policy of continuing
improvement, and therefore reserves the right
to make changes and enhancements to any of
the products described in this manual without
notice.
Under no circumstances shall Mares be held
responsible for any loss or damage sustained
by third parties deriving from the use of this
instrument.
IMPORTANT WARNINGS
Important:
Any critical information or warnings that might
affect the performance or result in the injury of
the technician, Nemo Wide Computer owner,
or other persons are highlighted with the
following symbols:
 WARNING
Mares recommends scrupulous adherence to
the simple rules of behavior listed below:
In addition to the dive computer, also use
a depth gauge, a submersible pressure
gauge, a timer or watch, and dive tables.
Responsible Diving Practices
 WARNING
Never dive alone, Nemo Wide cannot
replace a diving buddy.
 WARNING
Do not dive if the readings on the
instrument appear irregular or unclear.
 WARNING
The dive computer cannot ensure against
possible decompression sickness. The dive
computer cannot take into account the
physical conditions of the individual diver,
which may vary from one day to the next.
For your safety, have a general medical
check-up before undertaking a dive.
 WARNING
Always check the battery power level
before starting the dive. Do not dive if
the icon indicates that the battery is low.
Replace the battery.
 WARNING
Do not fly within 24 hours of your last dive,
and in any case wait until the Nemo Wide
“no fly” warning disappears.
 WARNING
Indicates a potentially hazardous situation
which, if not avoided, may result in minor
or moderate injury. It may also be used to
alert against unsafe practices.
Recreational divers should not dive deeper
than 40 m (130 ft). Although this computer
will continue to provide information for
compressed-air dives deeper than 40 m
(130 ft.), the risk of nitrogen narcosis and
decompression sickness (DCS) is greatly
increased; therefore this information
should be treated as only approximate.
 WARNING
 WARNING
 caution
Indicates a potentially hazardous situation
which, if not avoided, could result in death
or serious injury.
 DANGER
Indicates an imminently hazardous
situation which, if not avoided, will result in
death or serious injury.
Before diving, make sure you have read and
understood all parts of this manual.
 WARNING
The Nemo Wide dive computer is designed
exclusively for recreational sports use and
not for professional applications.
• Always plan your dives in advance.
• Never exceed the limits of your skill and
experience.
• Go to your deepest planned depth at the
beginning of the dive.
• Check your computer frequently during the
dive.
• Comply with the ascent rate indicated by the
computer.
• Always perform a safety stop between 6 and -3 meters (-20 and -10 ft) for at least
3 minutes.
• After any decompression stops, ascend very
slowly to the surface.
• Avoid yo-yo dives (repeatedly ascending and
descending underwater).
• Avoid strenuous activity during the dive and
for half an hour after surfacing.
• When diving in cold water or after intense
exertion, start ascending well before
reaching the no-decompression limits.
• In the case of a decompression dive, prolong
the decompression stop nearest the surface
for safety.
• Repetitive dives should be separated by a
surface interval of at least 2 hours.
• Your deepest dive should be the first one of the
day.
• Avoid diving until the desaturation time
deriving from the previous dive has elapsed.
• When doing repetitive dives for several
consecutive days, take at least one day
off from diving every week. In the case
of decompression-stop diving, it is
recommended to take one day off from
diving every three days.
• Avoid decompression-stop dives and do not
dive deeper than 40 meters (130 ft) unless
you have been specifically trained in this
type of technical diving.
• Avoid repetitive “square profile” dives (dives
to a single depth) deeper than 18 meters
(60 ft).
• Always wait at least 12 hours, and preferably
24 hours, before flying after a dive, in
accordance with the recommendations of
the Divers’ Alert Network.
Never dive to depths greater than 40 m
(130 ft), and never take decompression
dives with Nemo Wide unless you possess
the specific license (IANTD, NAUI,
PADIDSAT, PSA, SSI, TDI, etc.) for deep
scuba diving to depths of more than 40 m
(130 ft) and fully understand the risks and
the skills that this type of dive requires.
This type of dive can entail a greater risk
of decompression sickness, even for the
most qualified and expert divers, and
regardless of the instrumentation or
computer used. Divers attempting these
types of dives must have completed a
specialist course and gained the necessary
experience.
The safety of a dive can only be increased
through adequate preparation and training.
Mares therefore recommends using the dive
computer only after having completed a
specialist diver training course.
Nemo Wide dive computer
• HOW THE NEMO WIDE DIVE
COMPUTER WORKS
The Nemo Wide has 8 operating modes:
1. DIVE
2. WATCHSET
3. TIME
4. PC
5. LOGBOOK
6. PLANNING
7. SET DIVE
8. OFF
Press any button to turn on Nemo Wide; the
word “DIVE” will appear.
At this point you can easily navigate through
the computer functions using the four keys
(Fig. 1).
 WARNING
Temperature can noticeably affect battery
voltage. The icon that signals a low battery
level may appear due to low temperatures,
even if the battery still has sufficient
capacity. In this case, backlighting is
disabled.
If backlighting has been disabled due to low
temperature, you can repeat the battery
status check by entering OFF mode (Fig. 2). If
the battery icon disappears, the backlighting
function has been re-enabled.
 WARNING
We advise that you replace the battery if
you intend to dive in cold water.
AUTOMATIC SWITCH-OFF
If Nemo Wide is switched on but you don’t
press any buttons for a certain period, it will
switch off automatically.
The delay before automatic switch-off varies
depending on the current operating mode.
Fig. 1
The buttons are used the same way in every
operating mode:
• the <+> button moves forward
• the <-> button moves backward
• the <ENTER> button accepts the selection
• the <ESC> button does not accept the
selection, or it exits the current operative
mode to return to the previous menu.
CHECK THE LEVEL OF BATTERY CHARGE
Nemo Wide periodically checks the charge
remaining in the batteries. The charge level
can be viewed in OFF mode (Fig. 2).
• SETTING PARAMETERS FOR THE
NEMO WIDE DIVE COMPUTER
Adjusting the watch:
WATCHSET
The WATCHSET menu, (Fig. 3), is divided into
three submenus, where you can adjust the
following parameters:
ADJ TIME
time
watch display (12h-24h)
date
Key Beep
turn key sounds on or off
Contrast
Display contrast
Fig. 2
If a low charge level is detected (20%), the
battery icon turns on and the display backlight
function is disabled.
When the icon first appears, replace the
battery as soon as possible.
If the charge level drops to the minimum value
(5%), all Nemo Wide functions are disabled,
and only the OFF mode can be accessed.
 WARNING
When the computer has not been used
for a long time, we recommend that you
check the battery status and replace it if
necessary.
BACKLIGHTING
Pressing the <+> button for two seconds will
temporarily turn on the backlight (for about 4
seconds).
Fig. 3
From the main menu, use the <+> or <-> keys
to select WATCHSET mode. Pressing the
<ENTER> button will display the words “ADJ
TIME”.
WATCHSET - ADJ TIME
Pressing the ENTER button will enter this
mode. Use the <+> or <-> buttons to adjust the
values: press and release the button to change
the value by one unit at a time, or hold down
one of the buttons to scroll automatically.
Press the <ENTER> button to save the changes
made and move to the next selection.
The <ESC> button exits to the previous set.
After making our selection we find ourselves
back in the ADJ TIME menu. Use the <+> and
<-> buttons to move to the Key Beep menu.
WATCHSET - Key Beep
Press the ENTER button to access this mode,
where you can use the <+> and <-> buttons to
select whether or not you want to hear a sound
when you press the keys.
Press the <ENTER> button to accept the
selection:
After the changes have been made, the
computer returns to the Key Beep menu. Use
<+> and <-> to move to the Contrast menu.
WATCHSET – Contrast
Pressing the ENTER button will enter this
mode, and it will display the current contrast
value. This can be changed using the <+> or
<-> keys.
Press the <ENTER> button to accept the
selection.
After the changes have been made, the
computer returns to the Contrast menu.
Pressing the <ESC> button will exit this menu
and the computer goes back to the main
WATCHSET menu.
Adjusting dive parameters:
SET DIVE
In this menu you can set the general data and
operational modes for the dive. SET DIVE has
two submenus:
Set dive - Data
Set dive - Mode
In the SET DIVE - DATA mode you can change
the following parameters:
salt / freshwater
meters – degrees Celsius / feet – degrees
Fahrenheit
Clear residual nitrogen
In the Set dive - Mode menu you can change
the following parameters as a function of the
type of dive selected.
Air
Altitude
Personal correction factor
Uncontrolled ascent
Audible alarms
EAN
Percentage O2
Maximum PPO2
Altitude
Personal correction factor
Uncontrolled ascent
Audible alarms
Bottom time
Audible alarms
From Main Menu, use the <+> or <-> buttons
to select SET DIVE mode. Press the <ENTER>
button to display the word “DATA” (Fig. 4).
Fig. 4
Press <ENTER> to enter the set.
SET DIVE - DATA
Set Dive - Data – FRESH / SALT
 WARNING
Before diving, make sure you have
correctly set the units of measurement. An
incorrect setting may give rise to confusion
during the dive, and hence to underwater
behavior errors.
To ensure maximum accuracy, you need to set
Nemo Wide for either fresh water (“Fresh”)
or seawater (“Salt”) as appropriate. Check
this setting often, especially if you use the
instrument in a variety of environments (lake,
sea, swimming pool).
Use the <+> or <-> buttons to adjust the values.
Press the <ENTER> button to save the changes
made and move to the next selection.
The <ESC> button exits to the previous set.
Set Dive - Data - °C Meters / °F Feet
You can select which units of measure you
want to use: metric (°C and m) or Imperial
(°F and ft).
Use the <+> or <-> buttons to adjust the values.
Press the <ENTER> button to save the changes
made and move to the next selection.
The <ESC> button exits to the previous set.
Set Dive - Data - Del Tissue
 WARNING
This option is intended only for highly
experienced divers. Users who clear the
residual nitrogen memory cannot use the
instrument for repetitive dives. After this
operation, do not dive with Nemo Wide if
you have already dived within the previous
24 hours.
This item is used for clearing the residual
nitrogen memory of the tissue compartments.
In Set Dive - Data mode, scroll until the
blinking “DELETE” message appears.
Press <ENTER> to call up the confirmation
option, which will show a blinking “NO”
message. Use the <+> or <-> buttons to change
to “OK”.
Then, once the “OK” message is displayed,
press <ENTER> to clear the residual nitrogen
in the tissue compartments.
If you do not wish to clear the residual nitrogen
memory in the tissue compartments, press
<ENTER> when “NO” is displayed.
The <ESC> button exits to the previous set.
Press the <ENTER> button after the last item
to return to the Set dive - Data menu.
Now we can move to the Set dive - Mode using
the <+> and <-> keys.
Note
If you have completed an EAN dive and
wish to do a repetitive dive with air, set the
computer for “EAN” with O2 at 21%. By so
doing, the calculation of the % CNS will
remain active.
AIR
This section covers dives using compressed
air as the breathing mix. When you see the
word AIR, in Set dive - Mode, press the ENTER
button. First of all, you can adjust the altitude.
Set - Air - Altitude
Altitude programs:
Fig. 6
P0
(0-700 m)(0-2296 ft)
P1
(700-1500 m)(2296-4921 ft)
P2
(1500-2400 m)(4921-7874 ft)
P3
(2400-3700 m)(7874-12139 ft)
When this item is accessed, it displays an
indication of the current altitude program (P0,
P1, P2, P3) (Fig. 5). Use the <+> or <-> buttons
to enter the desired value. Press <ENTER>
to save the changes and advance to the next
setting.
Use the <+> and <-> keys to set the desired
value.
Press <ENTER> to save your selection and
move to the next set.
Set - AIR - Fast Asc
 WARNING
A rapid ascent increases the risk of
decompression sickness.
This function enables or disables the “Stop”
function in case of uncontrolled ascent, to
prevent the dive computer from locking
out after a rapid ascent. The feature can be
particularly useful for instructors who need to
practice emergency ascents.
It displays the current setting (“ON” or “OFF”)
when activated (Fig. 7).
Fig. 5
Note
This setting cannot be changed during the
dive. Therefore, carefully check all settings
before going underwater.
 WARNING
Do not dive in mountain lakes without
having first checked that the appropriate
altitude program is selected.
Set - Air - Personal correction factor
SET DIVE - MODE
Set Dive - Mode is used for setting the general
parameters for the planned type of dive.
Press ENTER to access this menu.
Here you can select the dive you have planned
and adjust the corresponding parameters
accordingly. The last operational mode will
appear selected from among:
• AIR
• EAN
• BOTTOM TIME
Use the <+> and <-> keys to choose the dive
type desired.
The PF 0 program introduces no additional
margin of safety.
This icon, which appears during the dive,
indicates whether a personal correction factor
is enabled, and if so, its level.
The current personal safety factor program
(PF0, PF1, PF2) is displayed when you turn on
the computer (Fig. 6).
Nemo Wide includes a personal correction factor,
which you can set for added safety, to make the
algorithm more conservative. The correction
factor should be used by inexperienced divers,
for strenuous dives or when diving after a
prolonged period of inactivity.
Fig. 7
Use the <+> or <-> buttons to change the
setting.
Press <ENTER> to save the changes and
advance to the next setting.
 WARNING
This function is intended only for highly
experienced divers, who take full
responsibility for the consequences of
disabling the “Stop” on uncontrolled
ascent.
Set - Air - Al Beep
This function enables or disables the audible
alarms.
When the computer is turned on, it displays
the current setting (“ON” or “OFF”).
Use the <+> or <-> buttons to change the
setting.
Press <ENTER> to save and return to
Set – Mode.
The <ESC> button returns you to the main
menu.
Nemo Wide dive computer
Note
The alarm for any deep stops always
remains active.
 WARNING
The audible alarms should only be
disabled by experienced divers, who take
full responsibility for this operation.
EAN
This section addresses dives using EAN as the
breathing mix.
When you see the word EAN in Set dive - Mode,
press the <ENTER> button.
The general parameters for EAN dives are the
same as those for compressed air dives (AIR),
with the addition of settings for the percentage
of oxygen and its maximum partial pressure.
We recommend that you carefully read the “Set
dive - Mode - AIR” section before proceeding
further.
• oxygen percentage (%O2) in the mix;
• maximum O2 partial pressure (PPO2);
• altitude;
• personal correction factor;
• uncontrolled ascent;
• audible alarms.
 WARNING
The use of oxygen rich mixes exposes
the diver to different hazards from those
associated with compressed air. The
diver should be aware of these risks and
understand how to avoid them.
 WARNING
Do not use breathing mixes with an oxygen
percentage greater than 50%.
 WARNING
It is essential to correctly set the oxygen
percentage in the mix to ensure correct
readouts of:
• no decompression time remaining;
• decompression stop times;
• alarm on exceeding the maximum
permitted PPO2.
Set - EAN - %O2
The percentage of oxygen in the mix can be
adjusted within the interval 21% - 50%, in
increments of 1%, (Fig. 8).
Set - EAN - PPO2
Nemo Wide sounds an alarm when the partial
pressure of oxygen reaches a pre-established
limit. This limit can be varied from a minimum
1.2 bar to a maximum of 1.6 bar, in increments
of 0.1 bar.
Use the <+> or <-> buttons to enter the desired
value.
As this value changes, Nemo Wide will show
the maximum dive depth compatible with
the oxygen percentage and maximum partial
pressure that have been programmed (Fig. 9).
From this menu you can also directly access
the setting for adjusting the watch, and
from here you can adjust the time and date.
Hold down the <ENTER> button for two
seconds when the date or time appears.
You can also enter the dive data setting by
pressing <ENTER> for two seconds when the
temperature reading appears.
• DIVING WITH NEMO WIDE
 WARNING
We advise that when diving you always put
Nemo Wide into Predive mode.
Always check that the dive computer is
switched on early in your dive.
Fig. 9
Press <ENTER> to save the value and move on
to the following settings, which are altitude,
personal correction factor, uncontrolled
ascent, and audible alarms covered in the
previous AIR section.
BOTTOM TIME
This section addresses dives using BOTTOM
TIME. You can set the audible alarms here.
When you see the word BOTTOM TIME in Set
dive - Mode, press the <ENTER> button.
Set - BOTTOM TIME - Al Beep
This function enables or disables the audible
alarms. When the computer is turned on, it
displays the current setting (“ON” or “OFF”).
Use the <+> or <-> buttons to change the
setting.
Press <ENTER> to save and return to Set – Mode.
Nemo Wide manages three types of dives:
AIR
EAN
BOTTOM TIME (Gauge)
To help clarify Nemo Wide functions during the
dive, the display screens have been grouped
into four phases:
Predive
Dive
Surfacing
Surface mode
PREDIVE - AIR
This operating mode remains active until
the diver goes below 1.2 meters (4 ft). The
following details are displayed (Fig. 11):
• type of dive (AIR);
• units of measurement (m-°C or ft-°F);
• type of water (Salt, Fresh);
• altitude program (if enabled) and level;
• personal correction factor (if enabled) and
level.
CONTROLLING THE TIME SETTINGS
In this menu you can control the current watch
data, date and temperature.
You can access the TIME option from the
main menu using the <+> and <-> keys. Press
<ENTER> to accept the TIME selection.
The current time will be displayed. Press <+>
or <-> to view the temperature and current
date (Fig. 10).
Fig. 11
Note
Before every dive, it is advisable to
enter Set Dive mode and check all the
parameter settings.
DIVE – AIR:
“NO-DECOMPRESSION” DIVE
When the diver descends below 1.2 meters (4
ft) Nemo Wide automatically switches to Dive
Mode and starts displaying the dive data. If
this mode persists for more than 20 seconds,
Nemo Wide will begin recording the dive
details in the Log Book memory.
Fig. 8
Use the <+> or <-> buttons to enter the desired
value.
Press <ENTER> to save the oxygen percentage
and advance to the next setting.
Fig. 10
Press the <ESC> button to return to the main
menu.
The following details are displayed (Fig. 12):
• current depth (in “m” or “ft”);
• no decompression time remaining,
expressed in minutes;
• “No deco” icon;
• icons for the altitude program and personal
correction factor (if enabled).
Fig. 12
The display bar shows you:
• the temperature (in °C or in °F);
• the duration of the dive so far (dive time) in
digits.
In this mode, the keys operate as follows:
<+> button:
• Press this button to display the maximum
depth reached. Press it again to remove the
maximum depth.
• Hold down the button for 2 seconds to
activate the display backlight.
<-> button:
• inactive in this mode.
<ENTER> button:
• temporarily displays (for 10 seconds) the
dive parameter settings, just as they appear
in Predive Mode.
<ESC> button:
• When the <ESC> button is pressed during
the dive, Nemo Wide will temporarily display
the estimated deep stop required. The data
displayed during the ascent may vary as a
result of the diver’s behavior. Divers should
check this data during their ascent for more
precise information on the estimated stop
(Fig. 13).
• “deco” icon”;
• current depth (in “m” or “ft”);
• depth of deepest decompression stop
(in “m” or “ft”);
• duration of the deepest decompression stop;
• icons for the altitude program and personal
correction factor (if enabled).
In this mode, the keys operate as follows:
<+> button:
• Press this button to display the maximum
depth reached. Press it again to remove the
maximum depth.
• Hold down the button for 2 seconds to
activate the display backlight.
<-> button:
by pressing this button you can choose to view
on the display bar:
• the ascent time;
• the temperature (in °C or in °F).
or
• the ascent time;
• the duration of the dive so far (dive time) in
digits
<ENTER> button:
• temporarily displays (for 10 seconds) the
dive parameter settings, just as they appear
in Predive Mode.
<ESC> button:
• When the <ESC> button is pressed during
the dive, Nemo Wide will temporarily display
the estimated deep stop required. The data
displayed during the ascent may vary as a
result of the diver’s behavior. Divers should
check this data during the ascent for more
precise information on the estimated stop.
Note
When the no-decompression time
remaining is one minute, an audible alarm
is sounded to indicate that the diver is about
to exceed the no-decompression limits.
TIME TO SURFACE (ASC TIME)
Fig. 13
DIVE – AIR: “DECOMPRESSION
STOP” DIVE
If the diver does not ascend when the residual
time has expired, Nemo Wide switches to
“decompression stop” mode, indicated by the
appearance of the “deco” message and by an
audible alarm.
The following data are displayed in this mode
(Fig. 14):
The ascent time is given by the sum of:
• duration of the various decompression
stops;
• Time required to ascend at an average
speed of 10 m/min (32 ft/min).
• Any deep stops.
 WARNING
When the omitted deco stop alarms are
triggered, desaturation of the simulated
tissue compartments is halted and
resumes only when the diver returns to
the correct stop depth.
If the decompression stop depth is exceeded by
more than 30 cm (11 inches), the “downward
triangle” icon will flash; if it exceeds 1m (3 ft)
it keeps flashing and an audible alarm will
sound. These warnings remain active until the
diver returns to the correct depth.
 WARNING
Never ascend above the correct
decompression stop depth.
Note
If the deco-stop overshoot exceeds
one meter and lasts more than
three minutes, the computer
switches to “Omitted Stop” mode
and the corresponding icon
appears.
In this case, if the diver attempts
a repetitive dive after surfacing,
Nemo Wide will only function as a
depth gauge and timer (BT mode),
and it will display the errors of the
preceding dive.
DEEP STOPS
To minimize the likelihood of critical bubble
seed formation, in the case of decompression
dives or dives close to the no-deco limit, Nemo
Wide prompts for a series of one-minute deep
stops at different depths depending on the dive
profile. Thus, when the conditions exist during
the dive, Nemo Wide will display a “deep stop”
icon (Fig. 16).
DECOMPRESSION STOPS
Nemo Wide also checks that the
decompression stops are observed; two icons
graphically indicate how the diver must behave
(Fig. 15).
Fig. 16
Fig. 15
Fig. 14
•2 triangles: correct decompression stop
depth;
• upward triangle: diver below decompression
stop depth, ascend!
• downward triangle: diver has ascended
beyond decompression stop depth, descend!
This display is helpful in planning the deep
stop during the ascent. When the diver
approaches a deep stop, Nemo Wide sounds
an audible alarm and the “DEEP STOP”
message appears on the display bar.
At the depth indicated a countdown will appear
indicating the time left in the DEEP STOP
(Fig. 17). There can be more than one deep
stop during a dive. This depends on the dive
profile and on the type of decompression.
Nemo Wide dive computer
SAFETY STOP
Fig. 17
If the maximum depth of a dive exceeds 10
meters, a “Safety Stop” is activated for the
ascent. Nemo Wide suggests that divers take
a 3-minute safety stop between 2.5 and 6 m
in depth (8 - 19 ft), and will display the word
“SAFEST”. A Timer located on the display bar
indicates the time needed to complete the stop
(Fig. 19).
 WARNING
A rapid ascent increases the risk of
decompression sickness.
 WARNING
Disabling the “Stop” on uncontrolled
ascent should only be done by highly
experienced divers, who take full
responsibility for the consequences of this
action.
As the diver ascends, Nemo Wide activates the
ascent rate control algorithm, displaying the
value both in m/min (ft/min) and graphically
(Fig. 18).
Fig. 18
If the diver’s speed exceeds 12 m/min (39
ft/min), the “Slow” message appears on the
display bar and Nemo Wide sounds an audible
alarm that persists until the ascent rate
returns below the maximum permitted limit
(12 m/min - 39 ft/min).
At the same time as the audible alarm is
triggered, the computer begins monitoring an
“Uncontrolled Ascent”. An ascent is considered
“uncontrolled” when the diver exceeds the
maximum rate for a stretch equal to at least
two thirds of the depth at which the audible
alarm was triggered. This criterion only
applies to alarms triggered below a depth of
12 m (39 ft).
In case of an uncontrolled ascent, upon
surfacing Nemo Wide disables the AIR and
EAN functions of Dive Mode, and will only
function as a timer and depth gauge (BOTTOM
TIME).
The other operating modes remain active.
The “Stop” on uncontrolled ascent function can
be disabled in Set Dive mode.
 WARNING
Do not fly or travel to high altitudes while
the no-fly indication remains active.
SURFACE MODE - AIR
Note
When the <ESC> button is pressed during
the dive, Nemo Wide will temporarily
display the estimated deep stop required.
The data displayed during the ascent may
vary as a result of the diver’s behavior.
Divers should check this data during the
ascent for more precise information on the
estimated stop.
ASCENT
Note
The buttons in surfacing mode are
disabled.
When the dive is considered finished, Nemo
Wide switches from Dive mode to Time mode,
indicating the desaturation time in the display
bar as well as the NO FLY icon (Fig. 21).
Fig. 19
If the diver moves outside the afore-mentioned
depth range, the safety stop timer is halted.
When the diver re-enters the correct depth
range, the safety stop timer resumes from
where it left off.
If the diver returns to a depth below 10 m
(32 ft), the safety stop timer will ignore the
previously aborted stop and will start over
from scratch. In the case of a decompressionstop dive, the safety stop extends the duration
of the decompression stop at 3 m (10 ft) by an
additional 3 minutes, displaying the safety stop
information as described previously.
SURFACING - AIR
When the measured depth is less than 1 m
(3 ft), Nemo Wide considers the dive to be
suspended (“Surfacing”) and halts the dive
timer. If the diver does not return below 1.2 m
(4 ft) within the next 3 minutes, Nemo Wide
considers the dive to be finished and records its
data in the log book memory. If the diver does
re-descend within 3 minutes, the dive continues
and the dive timer resumes from where it left
off.
Data displayed in Surface mode (Fig. 20):
• duration of the dive;
• maximum depth;
• icons for any mistakes made during the
dive(omitted stop, uncontrolled ascent).
Fig. 20
 WARNING
If an AIR or EAN dive ends with an
uncontrolled ascent or an omitted stop,
Nemo Wide will restrict Dive - AIR and Dive EAN modes for 24 hours and will only allow
the BOTTOM TIME operation mode.
Fig. 21
In addition, Nemo Wide displays the icons for
any errors made during the dive (omitted stop,
uncontrolled ascent).
You can also use the <+> and <-> keys to
view the no-fly time, the time, date, and
temperature.
The <ESC> button returns you to the main
menu.
DIVE - EAN
Due to the lower percentage of nitrogen in the
breathing mix, oxygen-rich mixtures make it
possible to extend the no-decompression limits,
as compared with the same dive with air.
However, the higher oxygen content in the mix
exposes the diver to oxygen toxicity hazards
which are not generally encountered in
recreational dives with compressed air.
In EAN mode, Nemo Wide computes oxygen
toxicity on the basis of the dive time, the depth
and the oxygen percentage setting, providing
indications that enable the diver to remain
within the safe limits for oxygen exposure.
To do a EAN dive, you must select the EAN
mode in the Set Dive - Mode menu.
Nemo Wide handles EAN dives in a similar
manner to compressed air dives. That means
that you will have the same functions and
procedures for selecting the Dive mode.
The only differences in managing the two
types of dives concern the settings for general
parameters for EAN dives and the of display
these parameters in addition to the normal air
dive parameters (discussed in the preceding
section).
This section will examine the general
parameters for EAN dives monitored by Nemo
Wide and the differences in how the data are
displayed.
 WARNING
It is essential to correctly set the oxygen
percentage in the mix to ensure correct
readouts of:
• no decompression time remaining;
• decompression stop times;
• alarm on exceeding the maximum
permitted PPO
.
 WARNING
Before the dive, make sure you have
correctly set up all the EAN dive parameters:
percentage of oxygen in the mix and limit
for the partial pressure of oxygen, which
together determine the maximum depth of
the dive.
Effects on Central Nervous System
Oxygen toxicity exposure is monitored by means
of a CNS (Central System Calculation), based
on currently accepted recommendations for
exposure limits.
This toxicity is expressed as a percentage
value which ranges from 0% to 100%. The
percentage CNS value is shown on the display.
An alarm is triggered when it exceeds 75%,
signaled by blinking of the value.
PREDIVE - EAN
This operating mode remains active until the
diver goes below 1.2 meters (4 ft).
The following details are displayed (Fig. 22):
• type of dive (EAN);
• units of measurement (m-°C or ft-°F);
• type of water (Salt, Fresh);
• altitude program (if enabled) and level;
• personal correction factor (if enabled) and
level;
• icon for %O2.
The use of oxygen rich mixes exposes
the diver to different hazards from those
associated with compressed air. The
diver should be aware of these risks and
understand how to avoid them.
Nemo Wide should only be used for diving
with oxygen rich mixes (EAN) by divers
who have the necessary certification. Lack
of appropriate diver training may result in
possibly serious injury.
 WARNING
The user is advised to carefully read the
section on compressed air diving before
reading the section on EAN dives.
MONITORING OF THE GENERAL
DIVE PARAMETERS
Oxygen Partial Pressure
When the diver reaches a depth at which the
PPO2 exceeds the maximum limit entered in
the corresponding parameter, (from 1.2 to 1.6
ATM), Nemo Wide triggers an alarm condition
signaled by:
• blinking depth indicator;
• audible alarm.
The alarm persists until the diver ascends
enough for the PPO2 to return within the
programmed limit.
 WARNING
When the max PPO2 alarm goes off, ascend
immediately until the alarm turns off.
Note
The procedure for scrolling the items on
the display is identical to that described in
the section on diving with compressed air.
Note
The functions of the buttons are identical
to those described in the section on diving
with compressed air.
 WARNING
 WARNING
Fig. 23
Fig. 22
Note
If Predive Mode persists for more than 10
minutes without any button being pressed,
Nemo Wide will revert to Time mode.
Note
Before every dive, it is advisable to
enter Set Dive mode and check all
the parameter settings and the EAN
parameters in particular.
 WARNING
We advise that when diving you always put
Nemo Wide into Predive mode.
Always check that the dive computer is
switched on early in your dive.
DIVE – EAN:
“NO-DECOMPRESSION” DIVE
When the diver descends below 1.2 meters (4
ft) Nemo Wide automatically switches to Dive
Mode and starts displaying the dive data.
If this mode persists for more than 20 seconds,
Nemo Wide will begin recording the dive
details in the Log Book memory.
The following details are displayed (Fig. 23):
• current depth (in “m” or “ft”);
• no decompression time remaining,
expressed in minutes;
• “no deco” icon;
• icons for the altitude program and personal
correction factor (if enabled).
• the % O2;
• the % CNS.
In this mode the buttons function as follows:
<+> button:
• Press this button to display the maximum
depth reached. Press it again to remove the
maximum depth.
• Hold down the button for 2 seconds to
activate the display backlight.
<-> button:
by pressing this button you can choose to view
on the display bar:
• the % O2;
• the % CNS.
Or
• the temperature (in °C or in °F);
• the duration of the dive so far (dive time) in
digits.
<ENTER> button:
• hold down this button to display the dive
settings with the same window as the Predive
mode.
<ESC> button:
• When the <ESC> button is pressed during
the dive, Nemo Wide will temporarily display
the estimated deep stop required. The data
displayed during the ascent may vary as a
result of the diver’s behavior. Divers should
check this data during the ascent for more
precise information on the estimated stop.
DIVE –
EAN “DECOMPRESSION STOP” DIVE
The data displayed for decompression-stop
diving with EAN are as follows (Fig. 24):
• “deco” icon;
• current depth (in “m” or “ft”);
• depth of deepest decompression stop
(in “m” or “ft”);
• duration of the deepest decompression stop;
• icons for the altitude program and personal
correction factor (if enabled).
Nemo Wide dive computer
• maximum depth;
• icons for any mistakes made during the
dive(omitted stop, uncontrolled ascent)
• display of % CNS
Fig. 27
Fig. 25
Fig. 24
In this mode the buttons function as follows:
<+> button:
• Press this button to display the maximum
depth reached. Press it again to remove the
maximum depth.
• Hold down the button for 2 seconds to
activate the display backlight.
<-> button:
by pressing this button you can choose to view
on the display bar:
• total time to surface;
• the % CNS.
Or
• the temperature (in °C or in °F);
• the duration of the dive so far (dive time) in
digits.
<ENTER> button:
• temporarily displays (for 10 seconds) the
dive parameter settings, just as they appear
in Predive Mode.
<ESC> button:
• When the <ESC> button is pressed during
the dive, Nemo Wide will temporarily display
the estimated deep stop required. The data
displayed during the ascent may vary as a
result of the diver’s behavior. Divers should
check this data during the ascent for more
precise information on the estimated stop.
 WARNING
To fully understand how to perform
decompression with EAN, the user should
also carefully read the corresponding
section for compressed-air deco stop dives.
Note
If you have completed an EAN dive and
wish to do a repetitive dive with air, set the
computer for “EAN” with O2 at 21%. By so
doing, the calculation of the %CNS will
remain active.
SURFACING – EAN
When the measured depth is less than 1 m
(3 ft), Nemo Wide considers the dive to be
suspended (“Surfacing”) and halts the dive
timer. If the diver does not return below 1.5 m
(5 ft) within the next 3 minutes, Nemo Wide
considers the dive to be finished and records its
data in the log book memory. If the diver does
re-descend within 3 minutes, the dive continues
and the dive timer resumes from where it left
off.
Data displayed in Surface mode (Fig. 25):
• duration of the dive;
10
SURFACE MODE – EAN
The data displayed in Surface - EAN mode
is the same as that for Surface - AIR mode,
except for the addition of the % CNS value
(Fig. 26).
 WARNING
We advise that when diving you always put
Nemo Wide into Predive mode. Always
check that the dive computer is switched
on early in your dive.
Note
After a dive in “BT” mode, the transition to
“AIR” or “EAN” mode will be disabled for
24 hours. (This lockout can be disabled by
clearing the residual nitrogen memory in
Set Dive - Data mode).
 WARNING
Fig. 26
DIVE - BOTTOM TIME (GAUGE)
In this mode Nemo Wide functions as an
electronic timer and depth gauge, but does not
perform any calculations for no-deco limits or
for deco-stop times.
Responsibility for planning the nodecompression limits or an adequate
decompression therefore lies entirely with the
user.
The details displayed in Predive and Surfacing
mode are the same as those already described
for air or EAN dives.
The data shown in Dive mode however are the
following (Fig. 27):
• dive time,
• current depth;
• ascent rate;
• temperature (in °C or in °F);
• the primary time.
In this mode the buttons function as follows:
<+> button:
• Press this button to display the maximum
depth reached. Press it again to remove the
maximum depth.
• Hold down the button for 2 seconds to
activate the display backlight.
<-> button:
• this button is not enabled in this mode.
<ENTER> button:
• temporarily displays (for 10 seconds) the
dive parameter settings, just as they appear
in Predive Mode.
<ESC> button:
• this button is not enabled in this mode.
This option is intended only for highly
experienced divers. Users who clear the
residual nitrogen memory cannot then
use the instrument for repetitive dives.
After this operation, do not dive with Nemo
Wide if you have already dived within the
previous 24 hours.
SURFACE MODE – BOTTOM TIME
The desaturation time and the delay before
flying or traveling to high altitudes are
displayed in the same way as for Air or EAN
dives.
BOTTOM TIME WITH BEHAVIOR
ERROR
The following errors can occur during an air or
EAN dive:
• Uncontrolled ascent
• Omitted deco stop
In this case, Nemo Wide will inhibit the
Dive - AIR and Dive - EAN modes for 24 hours,
allowing operation in BOTTOM TIME mode only,
and will continue to display the underwater
behavior error in question.
The corresponding error icons are displayed in
Dive, Time and Logbook mode.
PLANNING: SCROLLING OF NO
DECOMPRESSION LIMITS
This function allows the user to scroll through
the no decompression limits, automatically
taking into account the current residual
saturation of the tissue compartments from a
preceding dive.
The times shown during the scrolling of no
decompression limits take into account all
the Set Dive parameters, such as the Mode,
Altitude, Personal Correction Factor and, in
the case of EAN dives, the values for oxygen
percentage and its maximum permitted partial
pressure.
To enter Plan mode, scroll through the
Main Menu until the “PLANNING” message
appears on the display bar, and then press the
<ENTER> button.
Repeatedly press the <+> button to increase
the depth by three meters each time, up to a
maximum of 48 m (157 ft).
Press the <-> button to decrease the depth
indicated in three-meter increments, down to
0 m (0 ft).
For each depth, the display shows the
corresponding no decompression time
expressed in minutes.
If EAN mode is enabled, the oxygen percentage
set is also shown (Fig. 28).
• total diving time (hours and minutes);
• total number of dives done;
• coldest logged temperature.
Pressing the <ENTER> button will display the
individual dives.
Fig. 29
Note
For more extensive data storage,
management and viewing functionality,
use a PC with a USB interface (optional).
Log Book - Dive #
When viewing the details of the individual
dives, these are numbered sequentially in
reverse chronological order.
The following data are displayed (Fig. 30):
• type of dive (AIR, EAN, BOTTOM TIME).
• sequential dive number;
• alternating dive start date and time.
Press the <-> button to choose to view one of
the following on the display bar:
• % O2 in the breathing mix (EAN only);
• % CNS maximum (EAN only).
Or
• lowest logged temperature,
• duration of the dive.
Or
• type of water (Salt, Fresh);
Press the <ENTER> button to review the profile
of the dive.
Note
For dives in BOTTOM TIME mode, the
uncontrolled ascent and omitted deco stop
icons refer to errors committed during the
preceding dive.
Log Book - Profile
In Profile mode you can review the profile
points of a dive, spaced at 20 second intervals.
Press the <+> button once to advance to the
next profile point, or hold it down to scroll
automatically.
The details displayed in Profile mode are the
following (recorded at the end of the time
interval) (Fig. 32):
• current depth;
• fastest ascent rate;
• duration of the dive.
As well as any icons such as:
• “deco” icon for decompression-stop dives
(AIR, EAN only);
• omitted deco stop icon (AIR, EAN only);
• personal correction factor (AIR, EAN only);
• “no deco” icon for no-decompression dives
(AIR, EAN only);
• selected altitude program (AIR, EAN only).
Fig. 28
The maximum depth allowed in this case
varies as a function of the % O2 and maximum
PPO2 that have been entered.
The <ESC> button returns you to the main
menu.
Note
The Plan function will only be active after
having selected AIR or EAN mode in Set
Dive.
LOG BOOK
Log Book mode is used for viewing the details
of past dives on the display.
The dives are organized as in the pages of a
“log book”, with the number “1” assigned to
the most recent dive, “2” to the preceding dive
and so forth, until the memory is full.
If the memory is full, when the user dives
again the oldest record is deleted to free up
memory for the new dive.
Maximum capacity is approximately 40 hours
of diving with profile points at twenty second
intervals.
To enter Log Book mode, scroll through the
Main Menu until the “LOGBOOK” message
appears on the display bar, and then press the
<ENTER> button.
Log Book
The first page of the log book contains a
summary history of dives with the following
information (Fig. 29):
• maximum depth reached;
Fig. 30
Press the <+> or <-> buttons to advance from one
dive to the next.
Press the <ESC> button to return to the
preceding menu.
Press the <ENTER> button to view the details of
the selected dive.
Log Book - Tech Data
This mode displays the summary details of
each individual dive (Fig. 31):
• Type of dive: AIR, EAN, BOTTOM TIME.
• Maximum depth reached.
• Maximum ascent rate reached.
• “Uncontrolled ascent” icon.
• Omitted deco stop (AIR, EAN only).
• “Deco” icon for decompression-stop dives
(AIR, EAN only).
• Deco stop violation (AIR, EAN only).
• Selected personal correction factor
(AIR, EAN only).
• “No deco” icon for no-decompression dives
(AIR, EAN only).
• Selected altitude program (AIR, EAN only).
Fig. 32
Press the <ESC> button to return to the
preceding menu at any time.
The <ENTER> button is disabled.
• PC MODE
Using a special interface unit and a dedicated
Windows software application, you can transfer
all the data from the Nemo Wide log book to
a personal computer. Nemo Wide and the PC
communicate through a special USB interface
module (optional).
To transfer data to the computer, set Nemo
Wide to PC mode:
• Use the <+> or <-> buttons to select “PC” in
the display bar.
• press the <ENTER> button.
Position Nemo Wide with the display facing
upward and plug the interface into the special
port.
More detailed information is available in the
special software required to communicate with
Nemo Wide.
Fig. 31
For more information about options for
interaction between Nemo Wide and the PC we
11
Nemo Wide dive computer
invite you to consult the special section of the
www.mares.com web site. You can download
the dedicated software and any updates from
the web site.
A: In the latter case, during the dive and in
surface mode, the pertinent error icons are
displayed along with the standard “Bottom
Time” indications.
• OFF MODE
Q: If I select “AIR” or “EAN” mode after
completing a dive in “Bottom Time” mode, how
will the new dive be managed?
A: Nemo Wide does not allow you to do
an “AIR” or “EAN” dive in the 24 hours
immediately following a “Bottom Time” dive.
You can access OFF mode from the main menu
by pressing <ESC>.
In this menu, using the <+> and <-> buttons
you can view the following information
(Fig. 33):
• the serial number
• the charge level of the battery
• the software version
• the number of times the battery has been
replaced
press <ENTER> to turn off the computer.
press <ESC> to return to the Main Menu.
Q: Why is the PLANNING mode disabled
sometimes?
A: This happens if you end a dive with an
omitted stop or an uncontrolled ascent. If this
happens, Nemo Wide switches to BOTTOM
TIME and prevents use of the Dive - AIR and
Dive - EAN for 24 hours.
Q: What is the purpose of “OFF” mode?
A: By placing Nemo Wide in “OFF” you
can display the specifications of your dive
computer.
Q: Where can I find the product serial number?
A: In OFF mode.
Q: If I already own the Iris interface, can I use it
with Nemo Wide?
A: No.
Q: Sometimes the temperature indication is
too high in time mode.
A: The thermometer was calibrated for use
underwater; out of the water Nemo Wide is
affected by your body temperature. Therefore
if you want a more accurate temperature
reading, we suggest that you take the Nemo
Wide off your wrist and leave it for a few
minutes on a surface that is not influenced by
other temperatures.
Fig. 33
Note
When the battery charge status is displayed,
pressing the ENTER button will run an
instant battery check.
• FAQ
Q: What happens if I replace the battery after a
dive, before the desaturation time has run out?
A: The residual nitrogen memory will be cleared,
and the RGBM calculations for any previous
dives will be aborted. The diver who used the
computer in the previous dive must not dive for
at least 24 hours.
Q: What happens if I start a dive while Nemo
Wide is still in OFF mode?
A: If left in OFF mode when you begin the dive,
Nemo Wide will still activate DIVE mode within
20 seconds of descending past 1.5 m (5 ft).
Q: When I replace the battery, will my Log Book
dive data be lost?
A: No.
Q: What happens if there is an uncontrolled
ascent or omitted decompression stop during
an “AIR” or “EAN” dive?
A: Nemo Wide automatically switches to
“Stop” mode at the end of the dive. The only
Scuba mode that remains active in this case is
“Bottom time”.
Q: What indicates that “Bottom Time” mode
was chosen by the user, rather than forced as
a result of underwater behavior errors during
the preceding dive?
12
Q: Are the 3 minutes of the safety stop included
in the ASC time?
A: The 3 minutes of the safety stop are not
included in the ASC time.
Q: What is a DEEP STOP?
A: To minimize the likelihood of critical bubble
seed formation, in case of decompression dives
or dives close to the no-deco limit, Nemo Wide
prompts for a series of one-minute Deep Stops
at different depths depending on the dive profile.
This is one of the special characteristics of the
RGBM Mares-Wienke Algorithm. For more
information visit: www.rgbm.mares.com
Q: If I ascend above the depth for the DEEP
STOP can I go back down to do the stop?
A: If you surpass the stop by more than a meter
(3 ft), the stop is canceled.
Q: Why doesn’t the DEEP STOP icon appear
during the dive?
A: The DEEP STOP only appears for
decompression dives or dives close to the deco
limit.
Q: If I start my DEEP STOP and then go back
down what happens?
A: If you begin the DEEP STOP and then
descend, the countdown stops. It resumes
when you return to the DEEP STOP depth.
• MAINTENANCE
After diving in seawater it is recommended
that you rinse Nemo Wide with fresh water to
remove any salt residues.
Do not use chemical products; just put the
Nemo Wide under running water.
Note
If signs of moisture are observed on the
inside of the mineral glass, take your Nemo
Wide to an authorized Mares service center
immediately. In any case, Mares declines
responsibility for any water seepage that
results from errors in replacing the battery.
 WARNING
The mineral glass is not exempt from
scratches resulting from improper use.
Replacing the battery
Replacing the battery is a delicate operation,
and requires close attention.
We suggest that you visit an authorized Mares
center. Mares declines all responsibility for any
damage caused by replacing the battery.
Unscrew the waterproof cover located on the
back of the Nemo Wide, turning it counterclockwise (Fig 34).
Fig. 34
Remove the battery
Note
Do not discard the old battery in the
environment.
Mares respects the environment, and
urges use of the appropriate separated
waste collection service.
Insert a new battery, Lithium CR 2450, making
sure the polarity is correct.
 WARNING
Inspect the O-ring carefully, checking for
any signs of damage, tearing or warping.
If necessary, replace it with a new O-ring
(Mares spare part Code 44200723).
Position the gasket in the cover
Set the cover on the Nemo Wide, making sure
that the icons are positioned correctly (Fig. 35).
Q: Why doesn’t Nemo Wide turn off after a
dive?
A: If the no-fly period has not expired, after a
dive Nemo Wide switches to TIME mode and
shows information about the most recent dive.
If you want to turn off the Computer, use the
OFF command.
Fig. 35
Turn clockwise, pressing the cover until the
icons are aligned (Fig. 36).
* Note
Data refer to calculations performed with
the following parameters:
• Average length of every dive 45 min
• 12 months of OFF-MODE.
• Battery life is affected by the operating
temperature.
• At lower temperatures the battery life
decreases.
• The life of the battery will vary
depending on use.
Fig. 36
STRAP
You can adapt the length of the strap to your
wrist by cutting it to size along the special
grooves (Fig. 37).
Fig. 37
Algorithm
• RGBM Mares-Wienke, the result of a
collaboration between Dr. Bruce R. Wienke
and the Mares Research and Development
Center.
• 10 tissue compartments.
• Reduction of permissible gradient (M
factors) in case of repetitive dives, deeperthan-previous dives or multi-day diving.
• Deep decompression stops.
• Safety stop.
• Ascent rate: 10 m/min.
• Altitude programs:
• P0 from 0 to 700 meters ASL (0-2296 ft);
• P1 from 700 to 1500 meters ASL
(2296-4921 ft);
• P2 from 1500 to 2400 meters ASL
(4921-7874 ft);
• P3 from 2400 to 3700 meters ASL
(7874-12139 ft).
• Personal correction factor for added safety.
TECHNICAL/FUNCTIONAL
CHARACTERISTICS
Mechanical characteristics
• Mineral glass.
• 4 buttons.
TECHNICAL FEATURES
FUNCTIONAL CHARACTERISTICS
Depth measurement
• Maximum displayed depth: 150 m (492 ft).
• Measurement resolution:
• 10 cm (3.95 in) in the 0-100 m (0-328 ft)
range;
• 1 m (3.28 ft) in the 100-150 m (328-492 ft)
range.
• Temperature compensation of the
measurement between -10 and +50 °C
(14/122 °F).
• Measurement accuracy from 0 to 80 m
(0-262 ft): ±1% of full scale.
• Depth display: meters (m) / feet (ft).
• Manual fresh/seawater selection.
• Difference between fresh/seawater: 2.5%.
Temperature measurement
User Interface
• 4-button easy access.
• Measurement range: -10/+50 °C (14/122 °F).
• Measurement resolution: 1°C (1°F).
• Measurement accuracy: ±2 °C (±4 °F).
• Temperature display: Celsius (°C)/
Fahrenheit (°F).
• Operating temperature: from -10 to +50 °C
(14/122 °F).
• Storage temperature: from -20 to +70 °C
(‑4/+158° °F).
Battery
Backlighting
• Temporary.
• Lithium 3V CR 2450 battery.
• Life: over 170 dives*.
DIVE operating mode
• AIR.
• EAN.
• BOTTOM TIME.
possible to upgrade your computer by updating
the software. The Nemo Wide software can be
updated using the USB interface (optional) and
downloading the software from the Mares site.
• WARRANTY
Mares products are guaranteed for a period of
two years subject to the following limitations
and conditions:
• the warranty is non-transferable and applies
strictly to the original purchaser.
• Mares products are warranted free from
defects in materials and workmanship:
upon serious technical inspection, any
components that are found to be defective
will be replaced free of charge.
• Mares S.p.A. declines all responsibility
for accidents of any kind that result from
tampering or incorrect use of its products.
VALIDATION OF THE WARRANTY
To validate the warranty, the first purchaser
must mail this certificate complete with the
vendor’s stamp to Mares S.p.A. within 10 days
of the date of purchase. Any products returned
for overhaul or repairs under warranty, or
for any other reason, must be forwarded
exclusively via the vendor and accompanied
with a proof of purchase slip. Products travel
at the risk of the sender.
WARRANTY EXCLUSIONS
• Damage caused by water infiltration resulting
from improper use (e.g. dirty seal, battery
compartment closed incorrectly, etc.).
• Rupture or scratching of the case, glass or
strap as a result of violent impact or blows.
• Damage resulting from excessive exposure
to elevated or low temperatures.
HOW TO FIND THE PRODUCT CODE
To view the product code, go to the OFF menu
by pressing <ESC> from the main menu.
The display bar will show the computer’s
serial number (Fig. 38). You should note this
number on the warranty certificate inside the
packaging. The serial number can also be
found on the Nemo Wide packaging.
Scrolling of no decompression limits
• From 12 to 48 m (39 -157ft).
Log Book
• Log book.
• All dives are stored with profile points at 20
second intervals, for a total of max 40 hours.
Audible alarms
• Omitted decompression stop.
• Excessive ascent rate.
• No decompression limit reached.
• Deep stop.
• Maximum depth in relation to the max PPO2
setting.
PC INTERFACE
USB (optional).
Fig. 38
• DISPOSAL OF THE DEVICE
Dispose of this device as electronic waste. Do
not throw it away with regular rubbish. If you
prefer, you can return the device to your local
Mares dealer.
SOFTWARE UPGRADE
If Mares produces new functional
characteristics for the Nemo Wide, it will be
13
cod. 44200580 - 04/08 - ArtBooK 3729/08
Algorithm
Deep Stop
Mares S.p.A. - Salita Bonsen, 4 - 16035 RAPALLO - ITALY - Tel. +39 01852011 - Fax +39 0185669984
www.mares.com