PUck Dive Computer
Puck
User’s Guide
Dive Computer
Puck Dive computer
• TABLE OF CONTENTS
QUICK GUIDE
PUCK DIVE COMPUTER
IMPORTANT WARNINGS
RESPONSIBLE DIVING PRACTICES
HOW THE PUCK DIVE COMPUTER WORKS
SETTING PARAMETERS FOR THE PUCK COMPUTER
ADJUSTING THE WATCH: WATCHSET
ADJUSTING THE GENERAL DIVE PARAMETERS: SET DATA
ADJUSTING THE DIVE PARAMETERS: SET MODE
AIR
EAN
BOTTOM TIME
TIME MODE
DIVING WITH PUCK
PREDIVE - AIR
DIVE – AIR: “NO-DECOMPRESSION” DIVE
DIVE – AIR: “DECOMPRESSION STOP” DIVE
TIME TO SURFACE (ASC TIME)
DECOMPRESSION STOPS
DEEP STOPS
ASCENT
SAFETY STOP
2
3
3
3
4
4
4
5
5
5
6
6
7
7
7
7
7
8
8
8
8
8
SURFACING - AIR
SURFACE MODE - AIR
DIVE - EAN CHECKING 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
LOGBOOK
PLANNING: SCROLLING OF NO DECOMPRESSION LIMITS
SYSTEM
FAQ
MAINTENANCE
TECHNICAL/FUNCTIONAL CHARACTERISTICS
TECHNICAL FEATURES
FUNCTIONAL CHARACTERISTICS
WARRANTY
DISPOSAL OF THE DEVICE
• QUICK GUIDE
1 Button
2 DIVE - maximum depth
3 DIVE - depth
4 DIVE - DEEP STOP depth
DIVE - decompression stop depth
5 DIVE - % CNS
6 DIVE - % oxygen
7 DIVE - no-decompression time remaining
DIVE - duration of the decompression stop
DIVE - DEEP STOP time remaining
DIVE - Minutes remaining for the safety stop
8 No-decompression dive indicator (NO DECO)
Decompression-stop diving indicator (DECO)
9 DEEP STOP Indicator
10 Decompression stop indicator
11 Total ascent time
12 Altitude level
13 "No fly" indicator
14 Low battery indicator
15 Personal factor
16 Omitted stop indicator
17 Uncontrolled ascent indicator
18 % ascent speed
19 Ascent speed
20 Dive time
21 Display bar: various types of information are displayed
based on usage
8
9
9
9
9
9
10
10
10
10
11
11
11
12
12
12
12
13
13
13
13
13
• PUCK DIVE COMPUTER
Congratulations!
Your new PUCK 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, PUCK Computer owner,
or other persons are highlighted with the
following symbols:
 caution
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.
 WARNING
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
Never dive alone; PUCK is no substitute
for 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 PUCK
(“no fly”) indication disappears.
 WARNING
Recreational divers should not dive
deeper than 40 m (130 feet). Although
this computer will continue to provide
information for compressed-air dives
deeper than 40m (130 ft.), the risk of
nitrogen narcosis and decompression
sickness (DCS) is greatly increased;
therefore this information should be
treated as only approximate.
 WARNING
Never dive to depths greater than 40 m
(130 feet), and never take decompression
dives with PUCK 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 PUCK computer is designed
exclusively for recreational use and is not
intended for professional applications.
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.
 WARNING
Mares recommends scrupulous adherence to
the simple rules of behavior listed below:
 WARNING
RESPONSIBLE DIVING PRACTICES
• 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 do a safety stop between -6 and
-3 meters (-20 and -10 feet) 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 computer memory has
cleared from the preceding day’s dive.
• 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, after a dive before flying,
in accordance with the recommendations of
the Divers Alert Network (DAN).
In addition to the dive computer, also use
a depth gauge, a submersible pressure
gauge, a timer or watch, and dive tables.
Puck Dive computer
• HOW THE PUCK DIVE COMPUTER
WORKS
If a low charge level is detected (BATT LO 1
), the battery icon turns on and the display
backlight function is disabled (Figure 3).
Press the button to switch on PUCK, which
starts in PREDIVE - AIR mode (Figure 1).
• ADJ TIME
- Time
- Watch display (12h-24h)
- Date
• CONTRAST
- Display contrast
• KEY BEEP
- Enable/disable the beep that sounds
when the button is pressed
Scroll through the main menu and move to
WATCHSET.
To enter the WATCHSET menu, press and hold
the button. The words ADJ TIME will appear.
Fig. 3
Fig. 1
Press the button to scroll through the main
menu, which offers 9 operating modes
(Figure 2).
• PREDIVE
• SET MODE
• SET DATA
• TIME
• WATCHSET
• PC
• LOGBOOK
• PLANNING
• SYSTEM
When the icon first appears, replace the
battery as soon as possible.
If the level reaches the minimum level
(BATT LO 2), all the PUCK functions will be
disabled, and only SYSTEM mode can be
accessed.
 WARNING
When the computer has not been used
for a long time, we recommend that you
check the battery power, and replace it if
necessary.
BACKLIGHTING
Pressing the button for 4 seconds will
temporarily turn on the backlight (for about
4 seconds).
When the backlight is on, pressing the button will
prolong illumination of the display.
 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 SYSTEM mode.
If the battery icon disappears, the backlighting
function has been re-enabled.
 WARNING
WATCHSET - ADJ TIME
When the words ADJ TIME appear, press and
hold the button.
The minutes number will flash.
Press the button to increase the minutes.
Press and hold the button to save the current
minutes value.
The hour number will flash.
Change and set the number using the same
procedure as for the minutes.
In sequence, the other information displayed
is:
• Minutes
• Hour
• Time Format
• Year
• Month
• Day
Setting the day returns you to the ADJ TIME
menu. Press the button to move to the
CONTRAST menu.
WATCHSET – CONTRAST
Press and hold the button to enter this mode.
The current contrast value will flash. Press
the button to increase the contrast (maximum
value 15).
Press and hold the button to select the desired
value.
WATCHSET - KEY BEEP
Press and hold the button to enter this mode.
The current value, ON or OFF, will flash.
Press the button to change your selection.
Press and hold the button to confirm your
selection.
Press the button to move to the ESC position
(Figure 4).
We advise that you replace the battery if
you intend to dive in cold water.
Fig. 2
The buttons follow the same logic in all
operating modes:
• Press and release to scroll through the
menu items.
• Holding down the button for approximately
2 seconds will enter a specific menu or
confirm the selections you have made.
CHECK THE BATTERY POWER LEVEL
PUCK will periodically check the battery power
level; you can view an indicator in SYSTEM
mode.
There are three power levels:
• BATT OK
• BATT LO 1
• BATT LO 2
AUTOMATIC SWITCH-OFF
If PUCK is turned on but no button is pressed
for a certain period of time, it will turn off
automatically. The delay before automatic
switch-off varies depending on the current
operating mode.
Fig. 4
• SETTING PARAMETERS FOR
THE PUCK COMPUTER
ADJUSTING THE WATCH:
WATCHSET
The WATCHSET menu is divided into three
submenus, where you can adjust the following
parameters:
Press the button to return to the WATCHSET
menu.
Press and hold the button to exit this menu
and return to the main menu.
Note
The ESC position is available in all menus.
When you are in this position, if you press
the button, it takes you to the beginning of
the current menu.
If you press and hold the button, it will exit
the current menu and go back to the main
menu.
ADJUSTING THE GENERAL DIVE
PARAMETERS: SET DATA
In this menu you can adjust the general dive
parameters selected.
• SALT / FRESHWATER
• METERS – DEGREES CELSIUS / FEET –
DEGREES FAHRENHEIT
• CLEAR RESIDUAL NITROGEN
Scroll through the main menu and move to
SET DATA.
To enter the SET DATA menu, press and hold
the button. Either FRESH or SALT will appear.
SET DATA – FRESH / SALT
To ensure maximum accuracy, you need to
set PUCK 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).
Press and hold the button to enter change
settings mode.
Press the button to select the desired mode.
Press and hold the button to confirm your
selection.
Press the button to move to the next selection.
 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.
SET DATA - °C METERS / °F FEET
You can select the units of measure to use:
metric (°C and m) or Imperial (°F and ft).
Press and hold the button to enter change
settings mode.
Press the button to select the desired unit of
measure.
Press and hold the button to confirm your
selection.
Press the button to move to the next selection.
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
Fig. 5
Press and hold to enter; the word NO will
begin to flash.
Press the button to change the selection.
To clear the residual nitrogen memory in the
tissue compartments, press and hold when the
word “YES” appears.
If you do not want to clear the residual nitrogen
memory in the tissue compartments, press
and hold when the word “NO” is displayed.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
ADJUSTING THE DIVE
PARAMETERS: SET MODE
At this point you can choose to keep the
current dive mode or select another.
Press and hold to change the desired dive type.
The last operating mode will begin to flash
(Figure 6).
In Set DATA mode, display the word DELETE
(Figure 5).
To change the desired value, press and hold
when the letters PF appear (Figure 8).
Fig. 8
The number next to PF will flash.
If the value selected is PF1 or PF2, an icon will
appear that will remain visible during the dive
to indicate that the personal correction factor
is enabled and at what level (Figure 9).
Fig. 6
Press the button to scroll through the 3 dive
mode options (Figure 7).
 WARNING
Use this function to clear the residual nitrogen
memory.
SET AIR - PERSONAL CORRECTION FACTOR
PUCK allows you to set an additional personal
safety factor to make the computer more
conservative. The correction factor should be
used by inexperienced divers, for strenuous
dives or when diving after a prolonged period
of inactivity. The PF 0 program introduces no
additional margin of safety. When activated,
the current personal correction factor will be
displayed. This can be PF0, PF1, or PF2.
In SET MODE you can define the specific
parameters for the type of dive you intend to
take.
When “SET MODE” appears, press and hold to
enter that menu.
The current setting will be displayed:
• AIR
• EAN
• BOTTOM TIME
SET DATA - DELETE TISSUE
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 PUCK if you
have already dived within the previous
24 hours.
In this mode you can set:
• Personal Correction Factor
• Fast Asc (Uncontrolled ascent)
• Altitude
• Audible alarms
Fig. 7
Fig. 9
Press the button to select the desired safety
factor.
Press and hold the button to record your
selection and move to the next setting.
SET AIR - FAST ASC
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
useful for instructors who need to practice
emergency ascents.
Press and hold the button if you wish to change
this setting (Figure 10).
When the dive type you want is displayed,
press and hold the button. This will save the
selected mode. Press the button to move to
subsequent settings.
Puck Dive computer
 WARNING
Do not dive in mountain lakes without
having first checked that the appropriate
altitude program is selected.
Fig. 10
The current selection (“ON” or “OFF”) will
flash:
• ON indicates that the function is enabled
• OFF indicates that the function is disabled
Press the button to select the chosen function.
Press and hold the button to save your
selection.
 WARNING
A rapid ascent increases the risk of
decompression sickness (DCS).
 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. To set the desired selection, press
and hold the button when the words AL-BEEP
appear.
The word ON or OFF will flash.
Press the button to change the setting.
Press and hold the button to confirm your
selection.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
Note
The alarm for any DEEPSTOPS is always
enabled.
 WARNING
The audible alarms should only be
disabled by experienced divers, who take
full responsibility for this operation.
EAN
SET AIR - ALTITUDE
When this item is accessed, it displays an
indication of the current altitude program (P0,
P1, P2, P3). To set the desired selection, when
the word ALT appears, press and hold the
button (Figure 11).
 WARNING
Altitude programs:
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)
The word ALT and the number corresponding
to the maximum altitude will flash.
Press the button to change the desired
altitude.
Press and hold the button to confirm your
selection.
Press the button to move to the next selection.
Note
This setting cannot be changed during the
dive. Therefore, carefully check all settings
before going underwater.
The oxygen percentage will flash.
Press the button to increase the value.
Press and hold the button to set the selected
value.
Press the button to move to the next setting.
Set - EAN - PPO2
PUCK 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.
As this value changes, PUCK will show the
maximum dive depth compatible with the
oxygen percentage and maximum partial
pressure that have been programmed.
To set the desired value, press and hold
the button when the display reads PPO2
(Figure 13).
In this mode you can set:
• Personal correction factor
• Fast Asc (Uncontrolled ascent)
• Altitude
• Audible alarms
• Oxygen percentage (%O2 ) in the mix
• Maximum O2 partial pressure (PPO2 )
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
Mode - AIR” section before proceeding further.
Fig. 11
Fig. 12
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%. To set the desired value,
press and hold the button when the oxygen
percentage appears (Figure 12).
Fig. 13
The word PPO2 and the number alongside will
flash.
Press the button to select the desired value.
Press and hold the button to confirm the
selected value.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
BOTTOM TIME
In this mode you can set:
• AUDIBLE ALARMS
SET BOTTOM TIME - AL BEEP
This function enables or disables the audible
alarms.
To save the desired setting, press and hold the
button when AL-BEEP appears. The current
setting, ON or OFF, will flash.
Press the button to change your setting.
Press and hold to confirm your selection.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
 WARNING
 WARNING
The audible alarms should only be
disabled by experienced divers, who take
full responsibility for this operation.
We advise that when diving you always put
PUCK into PREDIVE mode.
Early in your dive, always check that the
dive computer is switched on.
TIME MODE
In this menu you can view the watch, date, and
temperature.
Scroll through the main menu to TIME.
Press and hold the button to enter TIME mode;
the current time will appear.
Press the button to display the date.
Finally, press the button to display the
temperature.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
• DIVING WITH PUCK
PUCK manages three different dive types:
• AIR
• EAN
• BOTTOM TIME (GAUGE)
To help clarify how PUCK operates during the
dive, the display screens have been grouped
into four stages:
• Predive
• Dive
• Surfacing
• Surface mode
DIVE – AIR: “NO-DECOMPRESSION”
DIVE
When the diver descends below 1.2 meters
(4 feet) PUCK automatically switches to
Dive Mode and starts displaying the dive
data. Remaining in this mode for more than
20 seconds will make Puck begin recording the
dive details in the Log Book memory.
The following details are displayed (Figure 15):
• Current depth (in “m” or “ft”)
• The duration of the dive so far (dive time) in
numbers
• No decompression time remaining,
expressed in minutes
• “No deco” icon
• The temperature (in °C or °F)
• The DEEPSTOP icon (if the stop is required)
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Note
Hold down the button for 4 seconds to
activate the display backlight.
Note
When the DEEP STOP icon appears,
pressing the button will display the
estimated 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.
DIVE – AIR: “DECOMPRESSION
STOP” DIVE
If the diver does not ascend when the
residual time has expired, PUCK 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
(Figure 17):
• “Deco” icon
• Current depth (in “m” or “ft”)
• Depth of deepest decompression stop
(in “m” or “ft”)
• Duration of the deepest decompression stop
• The DEEPSTOP icon (if the stop is required)
• The Ascent time
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Fig. 15
PREDIVE - AIR
this operating mode remains active until
the diver goes below 1.2 meters (4 feet). The
following details are displayed (Figure 14):
• Type of dive (AIR)
• Units of measurement (m-°C or ft-°F)
• Type of water (Salt, Fresh)
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Pressing the button will display additional
information (Figure 16):
• The maximum depth reached
• The DEEPSTOP if applicable
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Pressing the button again will display:
• Type of dive (AIR)
• Units of measurement (m-°C or ft-°F)
• Type of water (Salt, Fresh)
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Fig. 17
Pressing the button will display additional
information (Figure 18):
• The maximum depth reached
• The DEEPSTOP if applicable
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Fig. 14
Note
Before every dive, you should check that
all parameters have been set correctly.
Note
If you stay in predive for more than 10
minutes without pressing any buttons,
PUCK will turn off.
Fig. 16
Fig. 18
Pressing the button again will display
(Figure 19):
• “Deco” icon
• Current depth (in “m” or “ft”)
Puck Dive computer
• Depth of deepest decompression stop
(in “m” or “ft”)
• Duration of the deepest decompression stop
• The current temperature
• The DEEPSTOP icon (if the stop is required)
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
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 after surfacing the diver
attempts a repetitive dive, PUCK will only
function as a depth gauge and timer (BT
mode), and will display the errors of the
preceding dive.
DEEP STOPS
Fig. 19
Pressing of the button again will display:
• Type of dive (AIR)
• Units of measurement (m-°C or ft-°F)
• Type of water (Salt, Fresh)
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
TIME TO SURFACE (ASC TIME)
The Ascent time is given by the sum of:
• The durations of the various decompression
stops
• Time required to ascend at an average
speed of 10 m/min (32 ft/min)
• Any deep stops.
DECOMPRESSION STOPS
PUCK will also check that the decompression
stops have been observed; two icons
graphically indicate what action the diver
should take.
•2 triangles: correct decompression stop
depth
• Upward triangle: diver below decompression
stop depth, ascend!
• Downward triangle: diver has ascended
beyond decompression stop depth, descend!
 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.
To minimize the likelihood of critical bubble
seed formation, in the case of decompression
dives or dives close to the no-deco limit, PUCK
prompts for a series of one-minute deep stops
at different depths depending on the dive
profile.
Thus, whenever the applicable conditions have
been met, PUCK will display an icon during the
dive that reads DEEPSTOP. This indication is
helpful in planning for your deep stop during
your ascent. Near the deep stop depth, PUCK
will sound an audible alarm, and the word
DEEPSTOP appears.
At the indicated depth, a countdown also
appears that will show you how much time
remains in the DEEPSTOP. There can be
more than one deep stop during a dive. This
depends on the dive profile and on the type of
decompression.
Note
During the dive, when the button is
pressed, PUCK will 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
 WARNING
A rapid ascent increases the risk of
decompression sickness (DCS).
This criterion only applies to alarms triggered
below a depth of 12 m (39 ft). In case of an
uncontrolled ascent, upon surfacing PUCK
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 DATA mode.
SAFETY STOP
If the maximum depth of a dive exceeds 10
meters, a “Safety Stop” is activated for the
ascent. PUCK 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
“SAFE”. A timer indicates the time needed to
complete the stop.
If the diver moves outside the depth range
mentioned above, 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 zero. In the case of a decompression-stop
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), Puck 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, Puck considers the dive
to be finished and records its data in the
LOGBOOK. 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 (Figure 20):
• Duration of the dive
• Max depth
• Icons for any mistakes made during the
dive(omitted stop, uncontrolled ascent)
• Coldest logged temperature
 WARNING
Disabling the “Stop” on an uncontrolled
ascent should only be done by highly
experienced divers, who take full
responsibility for the consequences of this
action.
As soon as the depth decreases, PUCK
activates the ascent rate control algorithm,
displaying the value both in m/min (ft/min)
and graphically; when the ascent rate exceeds
12 m/min (39 ft/ min) the bar appears with
the word “Slow”, and PUCK emits an audible
alarm that continues until the ascent rate
returns to within the maximum allowable 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.
Fig. 20
 WARNING
If an AIR or EAN dive ends with an
uncontrolled ascent or an omitted stop,
PUCK will restrict AIR and EAN modes for
24 hours and will only allow the BOTTOM
TIME operation mode.
Note
The backlight function is operational in
surface mode.
 WARNING
 WARNING
Do not fly or travel to high altitudes while
the no-fly indication remains active.
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.
SURFACE MODE - AIR
When PUCK considers the dive to be
concluded, it moves from Dive mode to TIME
mode, showing the desaturation time and the
NO FLY icon.
In addition, PUCK displays the icons for any
errors made during the dive (omitted stop,
uncontrolled ascent).
Press the button to display the NO FLY time
and the SURF TIME.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
 WARNING
PUCK 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.
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 to 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, PUCK 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 dive with an EAN mix, you must select the
EAN mode in the Set Mode menu.
PUCK 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
lie in setting the general parameters for EAN
dives and in the display of these parameters
in addition to the normal air dive parameters
(discussed in the preceding section).
This section will examine the general
parameters that are specific to EAN dives
monitored by PUCK 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 PPO2
 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.
CHECKING 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), Puck triggers an alarm condition
signaled by:
• blinking depth indication
• audible alarm
The alarm continues until the diver ascends
enough to bring the PPO2 back to within the
programmed limit.
 WARNING
When the MAX PPO2 alarm is triggered,
ascend immediately until it deactivates.
EFFECTS ON THE 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%. When the
CNS percentage value shown on the display
exceeds 75%, an alarm is triggered and the
figure will flash.
Fig. 21
Note
If you stay in predive for more than
10 minutes without pressing any buttons,
PUCK will turn off.
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
PUCK into PREDIVE mode.
Early in your dive, always check that the
dive computer is switched on.
DIVE - EAN: “NO-DECOMPRESSION”
DIVE
When the diver descends below 1.2 meters
(4 feet) PUCK automatically switches to Dive
Mode and starts displaying the dive data.
Remaining in this mode for more than
20 seconds will make Puck begin recording the
dive details in the Log Book memory.
The following details are displayed (Figure 22):
• Current depth (in “m” or “ft”)
• No decompression time remaining,
expressed in minutes
• “No deco” icon
• Altitude program and level (if enabled)
• Personal correction factor and level (if
enabled)
• The % CNS
• The duration of the dive so far (dive time) in
numbers
• The DEEPSTOP icon (if the stop is required)
PREDIVE - EAN
This operating mode remains active until the
diver goes below 1.2 meters (4 feet).
The following details are displayed: (Figure 21):
• Type of dive (EAN)
• Units of measurement (m-°C or ft-°F)
• Type of water (Salt, Fresh)
• Altitude program and level (if enabled)
• Personal correction factor and level (if
enabled)
• Icon for %O2
Fig. 22
Pressing the button will display:
• The maximum depth reached
• The DEEPSTOP if applicable
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Pressing the button again will display:
• Current depth (in “m” or “ft”)
• No decompression time remaining,
expressed in minutes
Puck Dive computer
• “No deco” icon
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
• The temperature (in °C or °F)
Pressing the button again will display:
• Type of dive (EAN)
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
• Units of measurement (m-°C or ft-°F)
• Type of water (Salt, Fresh)
• The %O2
• “Deco” icon
• Current depth (in “m” or “ft”)
• Depth of deepest decompression stop
(in “m” or “ft”)
• Duration of the deepest decompression stop
• The current temperature
• The DEEPSTOP icon (if the stop is required)
• Altitude program and level (if enabled)
• Personal correction factor and level (if
enabled)
Fig. 26
Note
The backlight function is operational in
surface mode.
Note
Hold down the button for 4 seconds to
activate the display backlight.
SURFACE MODE – EAN
DIVE - EAN: “DECOMPRESSION
STOP” DIVE
If the diver does not ascend when the
residual time has expired, PUCK 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 (Figure 23):
• “Deco” icon
• Current depth (in “m” or “ft”)
• Depth of deepest decompression stop
(in “m” or “ft”)
• Duration of the deepest decompression stop
• The DEEPSTOP icon (if the stop is required)
• The Ascent time
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
• The % CNS
• The duration of the dive so far (dive time) in
numbers
Fig. 25
Pressing the button again will display:
• Type of dive (EAN)
• Altitude program and level (if enabled)
• Personal correction factor and level (if
enabled)
• Units of measurement (m-°C or ft-°F)
• Type of water (Salt, Fresh)
• The %O2
Note
During the dive, when the button is
pressed, PUCK will 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.
Fig. 23
Pressing the button will display (Figure 24):
• The maximum depth reached
• DEEPSTOP icon
• The DEEPSTOP if applicable
• Altitude program and level (if enabled)
• Personal correction factor and level
(if enabled)
Fig. 24
Pressing the button again will display
(Figure 25):
10
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.
When PUCK considers the dive to be concluded,
it moves from Dive mode to TIME mode, showing
the desaturation time and the NO FLY icon.
In addition, PUCK displays the icons for any
errors made during the dive (omitted stop,
uncontrolled ascent).
Press the button to display the NO FLY time,
the SURF TIME, and the %CNS.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
DIVE - BOTTOM TIME (GAUGE)
In this mode PUCK 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 no-decompression 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 displayed in Dive mode are
(Figure 27):
• Dive time
• Current depth
• Ascent rate
SURFACING – EAN
When the measured depth is less than 1 m
(3 ft), Puck 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, Puck considers the dive
to be finished and records its data in the
LOGBOOK. 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 (Figure 26):
• Duration of the dive
• Max depth
• Icons for any mistakes made during the
dive(omitted stop, uncontrolled ascent)
• Display of % CNS
Fig. 27
Pressing the button will display (Figure 28):
• Temperature (in °C or in °F)
• The maximum depth reached
Fig. 28
Pressing the button again will display
(Figure 29):
• Type of dive (BT)
• Units of measurement (m-°C or ft-°F)
• Type of water (Salt, Fresh)
operation in BOTTOM TIME mode only, and will
continue to display the error committed during
the previous dive.
Pressing the button will display the
information for the dives stored (the first dive
displayed is the most recent one).
PC MODE
Using a special interface unit and a dedicated
Windows software application, you can
transfer all the data from the PUCK Log Book
to a personal computer.
Puck and the computer communicate through
a special USB interface module (optional).
Scroll through the main menu to PC
(Figure 31).
Press and hold the button to select the ESC
position. In this position, press and hold the
button to return to the main menu.
From the first LOGBOOK screen, pressing the
button takes you to the information about the
most recent dive stored.
Fig. 29
 WARNING
We advise that when diving you always
put PUCK into predive mode. Early in your
dive, always check that the dive computer
is switched on.
Fig. 33
Fig. 31
Note
After a dive in “BT” mode, the transition
to “AIR” or “EAN” mode will be disabled
for 24 hours (you can bypass this block by
resetting the residual nitrogen in the tissue
compartments in the SET DATA menu).
Press and hold the button to enter PC mode.
The letters “PC” will appear in the middle of
the screen (Figure 32).
LOGBOOK - DIVE #
The dives are numbered in order, from the
most recent to the oldest.
The following details are displayed:
• type of dive (AIR, EAN, BOTTOM TIME)
• sequential dive number
• alternating dive start date and time
 WARNING
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
clearing the residual nitrogen memory,
do not dive with PUCK if you have already
dived within the previous 24 hours.
Note
Hold down the button for 4 seconds to
activate the display backlight.
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 Nitrox
dives (Figure 30).
Press and hold the button to view additional
information.
Fig. 32
Lay Puck so the display faces down, and insert
the interface into the special port.
More detailed information is available in the
software needed to communicate with PUCK.
For more information about options for
interaction between PUCK and the PC, check
the special section of the www.mares.com web
site.
You can download the dedicated software and
any updates from the web site.
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
LOGBOOK
Fig. 30
BOTTOM TIME WITH BEHAVIOR
ERROR
The following errors can occur during an air or
EAN dive:
• Uncontrolled ascent
• Omitted deco stop
In this case, PUCK will inhibit the Dive - AIR
and Dive - EAN modes for 24 hours, allowing
Note
For more extensive data storage,
management and viewing functionality, use
a PC with a USB interface (optional).
LOGBOOK 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 of approximately 40 hours
of diving with profile points at twenty second
intervals.
Scroll through the main menu to LOGBOOK.
Press and hold the button to enter the LOGBOOK.
The first page of the LOGBOOK contains the
history of the dives saved (Figure 33):
• maximum depth reached;
• total dive time (hours)
• total number of dives done;
• coldest logged temperature
LOGBOOK - TECH DATA
This mode displays the summary details of
each individual dive:
• Maximum depth reached
• Maximum ascent rate reached
• “Uncontrolled ascent” icon
• Omitted deco stop (only Air, EAN)
• “deco” icon for decompression-stop dives
(only Air, EAN)
• Omitted deco stop (only Air, EAN)
• Selected personal correction factor (only Air,
EAN)
• “No deco” icon for no-decompression dives
(only Air, EAN)
• Selected altitude program (only Air, EAN)
• duration of the dive
• coldest logged temperature
Pressing the button will display:
• %O2 in the breathing mix (EAN only)
• %CNS maximum (EAN only)
Press and hold the button to return to the first
screen of information about the current dive.
Press the button to scroll through the dives to
the end. Press the button again to move to the
ESC position.
Press and hold the button to exit this menu
and return to the main menu.
Note
For dives in BOTTOM TIME mode, the
uncontrolled ascent and omitted deco stop
icons refer to errors committed during the
preceding dive.
11
Puck Dive computer
PLANNING: SCROLLING OF NO
DECOMPRESSION LIMITS
This function allows the user to scroll through
the no decompression limits, automatically
taking into consideration the residual nitrogen
level in the tissue compartments from a
previous dive.
The times displayed take into account all the
settings under SET MODE.
Scroll through the main menu to PLANNING.
Press and hold the button to enter PLANNING
(Figure 34).
Fig. 34
Pressing the button increases the depth shown
by three meters each time, up to a maximum
of 48 m (157 ft).
For each depth, the display shows the
corresponding no decompression time
expressed in minutes.
If “EAN” mode is selected, the display also shows
the programmed oxygen percentage value.
The maximum depth allowed in this case
varies as a function of the % O2 and maximum
PPO2 that have been entered.
Upon reaching the maximum depth, pressing
the button again moves to ESC mode.
Press and hold the button to return to the main
menu.
Note
The Plan function will only be active after
having selected AIR or EAN mode in SET
DIVE.
Note
To switch to ESC mode and easily exit the
PLANNING function, simply press and
hold down the button at any point during
scrolling.
SYSTEM
Scroll through the main menu to SYSTEM.
Press and hold the button to enter SYSTEM.
Here you can view:
• The serial number
• Firmware Version
• The number of times the battery has been
replaced
• The charge level of the battery, with three
possible levels:
- BATT OK
- BATT LO 1
- BATT LO 2
Press the button to move to the ESC position.
Press and hold the button to exit this menu
and return to the main menu.
12
Note
When the battery charge level is displayed,
press and hold the button to run an instant
battery check.
• FAQ
Q: What happens if I replace the battery after
a dive, before the desaturation time has gone
to zero?
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 PUCK is
still in SYSTEM mode?
A: If left in SYSTEM mode when you begin the
dive, PUCK will still activate DIVE mode within
20 seconds of descending past 1.2 m (4 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: After the dive, PUCK switches automatically
to “Stop”. Only BOTTOM TIME mode will
remain operational.
Q: What indicates that “Bottom Time” mode
was chosen by the user, rather than forced as
a result of diver errors during the preceding
dive?
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.
Q: If AIR or EAN mode is selected after
completing a dive in “BOTTOM TIME” mode,
how will the new dive be managed?
A: PUCK does not allow you to do an AIR or
EAN dive in the 24 hours immediately following
a BOTTOM TIME dive.
Q: Why is the PLANNING mode sometimes
disabled after a dive?
A: This happens if you end a dive with an
omitted stop or an uncontrolled ascent. If this
happens, Puck switches to BOTTOM TIME and
prevents use of the Dive - AIR and Dive - EAN
for 24 hours.
Q: What is SYSTEM mode for?
A: Putting PUCK into SYSTEM mode allows you
to view specific information about your dive
computer.
Q: Where can I find the product serial number?
A: In SYSTEM mode.
Q: If I already own the Iris interface, can I use it
with PUCK?
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 PUCK is affected
by your body temperature. Therefore if you
want a more accurate temperature reading, we
suggest that you take the PUCK off your wrist
and leave it for a few minutes on a surface that
is not influenced by other temperatures.
Q : Are the 3 minutes of the safety stop included
in the Ascent time?
A: The 3 minutes of the safety stop are not
included in the Ascent time.
Q: What is a DEEP STOP?
A: To reduce the chances of micro-bubbles
forming and growing, during decompressionstop dives or dives very close to the nodecompression limits, Puck will prompt for a
series of deep stops of a minute each at variable
depths, as a function of 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 DEEP 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.
Q: Why doesn’t PUCK turn off after a dive?
A: If the no-fly period has not expired, after a
dive PUCK switches to TIME mode and shows
information about the most recent dive.
• MAINTENANCE
After diving in seawater it is recommended
that you rinse PUCK with fresh water to
remove any salt residues.
Do not use chemical products. Simply hold
PUCK under running water.
Note
If you notice signs of moisture on the
inside of the plastic lens, take your PUCK
to an authorized Mares service center
immediately. In any case, Mares declines
responsibility for any water seepage
resulting from an incorrect battery
replacement procedure.
 WARNING
The plastic lens is not immune to
scratches caused by improper use.
 WARNING
The plastic lens is protected by a plastic
lens cover that is easily replaceable
(Mares spare part Code 44200617).
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.
Note
Do not discard the old battery in the
environment. Mares adopts a policy of
respect for the environment, and urges
use of the appropriate separated waste
collection service.
 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 Cod. 44200654).
Unscrew the waterproof cover on the back of
PUCK, rotating counter-clockwise.
Lift the cover, prying in the two grooves.
Remove the battery, paying close attention to
the proper polarity.
Insert a new battery, Lithium CR 2450, making
sure the polarity is correct.
Check the gasket in the cover.
Insert the cover onto PUCK so that the icons
are correctly positioned.
Press the cover inward.
Turn clockwise, pressing the cover until the
icons are aligned.
STRAP
The adjust the length of the strap to your
needs (for PUCK with a strap), grooves have
been provided at points in which it can be cut.
 WARNING
Mares reserves the right to refuse to
provide service under the warranty if the
maintenance instructions are not followed.
• TECHNICAL/FUNCTIONAL
CHARACTERISTICS
TECHNICAL FEATURES
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
• 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
• Lithium 3V CR 2450 battery
• Life: over 170 dives*
* Note
Data refer to calculations performed with
the following parameters:
•Average length of each dive 45 min
•12 months of SWITCH-OFF Mode
•Battery life is affected by the operating
temperature
•Battery life decreases at lower
temperatures
•The life of the battery will vary depending
on use
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,
deeper-than-previous dives or dives on
multiple consecutive days.
• 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
Mechanical characteristics
• Plastic lens
• Plastic lens cover
• 1 button
FUNCTIONAL CHARACTERISTICS
DIVE operating mode
• AIR
• EAN
• BOTTOM TIME
Scrolling of no decompression limits
• From 12 to 48 m (39 -157ft)
LOGBOOK
• History
• All dives are stored with profile points
at 20 second intervals, for a total of max
40 hours.
• 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 seepage 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, enter the SYSTEM
menu.
The product serial number is indicated here.
You should note this number on the warranty
certificate inside the packaging. The serial
number can also be found on the PUCK
packaging.
• 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.
Backlighting
• Temporary
Audible alarms
• Omitted decompression stop
• Excessive ascent rate
• No-decompression limit reached
• Deep stop
• Maximum depth allowed by
the max PPO2 setting
PC INTERFACE
USB (optional)
13
cod. 44200657 - 04/08 - ArtBooK 3744/08
Algorithm
Deep Stop
Mares S.p.A. - Salita Bonsen, 4 - 16035 RAPALLO - ITALY - Tel. +39 01852011 - Fax +39 0185669984
www.mares.com
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