Uwatec Meridian User manual
®
Meridian
2SCUBAPRO MERIDIAN
8. 2011 bz
MERIDIAN DIVING COMPUTER - DESIGNED BY DIVERS
Welcome to SCUBAPRO dive computers and thank you for purchasing the Meridian. You
are now the owner of an extraordinary partner for your dives. This manual provides you
easy access to SCUBAPRO state of the art technology and Meridian’s key features and
functions. Should you wish to know more about SCUBAPRO diving equipment, please visit
our website www.scubapro.com.
WARNING
• Meridian has a depth rating of 120m/394ft.
• If 120m is exceeded, -- will be shown in the depth field and the decompression algorithm does not
calculate correctly.
• Diving at oxygen partial pressures higher than 1.6 bar (corresponding to a depth of 67m/220ft
when breathing compressed air) is extremely dangerous and could lead to serious injury or death.
Merdian dive instrument is a personal protective equipment in compliance with the essential safety requirements of the
European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified
the conformity with the European Standard EN 13319:2000.
EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices - Functional and
safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this
standard is explicitly excluded from its scope.
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SCUBAPRO MERIDIAN
TABLE OF CONTENTS
1. Introduction to Meridian ....................................................................................... 6
1.1 Battery .................................................................................................... 6
2. Meridian as a watch ............................................................................................. 8
2.1.1 Setting the alarm clock ........................................................... 12
2.1.2 Setting the UTC ..................................................................... 12
2.1.3 Setting the time ...................................................................... 12
2.1.4 Set the 12/24h mode ............................................................. 13
2.1.5 Setting the date ..................................................................... 13
2.1.6 Setting the sound to “off ” (silent mode) .................................. 13
2.1.7 Checking the battery status ................................................... 14
2.1.8 Checking the device ID .......................................................... 15
2.1 Menus and functions ............................................................................. 16
2.1.1 Using the Stopwatch .............................................................. 17
2.1.2 Checking the Altitude ............................................................. 17
2.1.3 Planning a dive ....................................................................... 18
2.1.4 Reading the Logbook ............................................................. 19
2.1.5 Dive surface mode display ..................................................... 20
3. Meridian as a dive computer ............................................................................. 21
3.1 Settings at the dive mode ...................................................................... 21
3.1.1 Dive mode at surface ............................................................. 23
3.1.2 Surface interval counter .......................................................... 23
3.2 Gas settings .......................................................................................... 23
3.2.1 Set Gas 1 ............................................................................... 23
3.2.2 Set Gas d ............................................................................... 24
3.2.3 Nitrox reset time ..................................................................... 24
3.2.4 Workload settings (pulse limits) .............................................. 25
3.2.5 Desaturation reset .................................................................. 25
3.3 SCUBA settings .................................................................................... 25
3.3.1 Maximum dive depth alarm ................................................... 25
3.3.2 Maximum dive time alarm ...................................................... 26
3.3.3 Setting the Micro Bubble level ............................................... 26
3.3.4 Setting the Safety stop timer .................................................. 26
3.3.5 Setting the user preferred units .............................................. 26
3.3.6 Selecting the salt (ocean) or fresh water ................................. 27
3.3.7 Setting the Backlight on duration ........................................... 27
3.3.8 Setting audible attention signals on and off ............................ 27
3.3.9 Deactivating the water contacts ............................................. 28
3.4 APNEA Settings .................................................................................... 28
3.4.1 Setting the dual depth alarm .................................................. 28
3.4.2 Setting the depth incremental alarm ....................................... 29
3.4.3 Setting the dive time interval warning ..................................... 29
3.4.4 Setting the surface interval warning ........................................ 29
3.4.5 Setting the low Heart Rate limit alarm ..................................... 29
3.4.6 Setting the Ascent speed alarm ............................................. 30
3.4.7 Setting the water density ........................................................ 30
3.5 Algorithm selection ................................................................................ 31
4SCUBAPRO MERIDIAN
3.6 Diving with Meridian .............................................................................. 32
3.6.1 Display information ................................................................. 32
3.6.2 Display configuration during the dive ..................................... 33
3.7 Altitude diving ........................................................................................ 34
3.7.1 Altitude classes, altitude warning and no-fly time after a dive .. 34
3.7.2 Altitude and the decompression algorithm .............................. 35
3.7.3 Prohibited altitude .................................................................. 35
3.7.4 Decompression dives in mountain lakes ................................. 36
3.8 No-dive warning after a dive .................................................................. 36
3.9 SOS ...................................................................................................... 37
3.9.1 Desaturation reset .................................................................. 37
3.10 Diving with nitrox or with another decompression gas ........................... 37
3.10.1 Diving with two gas mixtures .................................................. 38
3.11 Warnings and alarms ............................................................................. 40
3.11.1 CNS O2 = 75% ....................................................................... 40
3.11.2 No-Stop time = 2 minutes ...................................................... 40
3.11.3 Entering decompression ........................................................ 41
3.11.4 Entering level stops ................................................................ 41
3.11.5 L0 no stop time = 2 minutes when diving an MB level ............ 41
3.11.6 Entering deco when diving an MB level .................................. 41
3.11.7 Ascent rate ........................................................................... 41
3.11.8 MOD/ppO2 ............................................................................ 42
3.11.9 CNS O2 = 100% ..................................................................... 42
3.11.10 Missed decompression stop .................................................. 43
3.11.11 Low battery ............................................................................ 43
3.11.12 Setting bookmarks ................................................................. 43
3.11.13 Safety stop timer .................................................................... 43
3.11.14 Activating the backlight .......................................................... 44
3.11.15 Diving with MB levels ............................................................. 44
3.11.16 Display information ................................................................. 45
3.11.17 Display of underlying L0 decompression information ............. 46
3.11.18 Cascading MB levels .............................................................. 46
3.11.19 Level stop ignored/MB level reduced ...................................... 46
3.11.20 PDI Stops .............................................................................. 46
3.12 GAUGE mode ....................................................................................... 47
3.13 APNEA mode ........................................................................................ 49
4. Meridian accessories ......................................................................................... 50
4.1 HR belt .................................................................................................. 50
4.2 Nylon arm strap ..................................................................................... 50
5. Meridian PC interface ......................................................................................... 51
5.1 Cradle .................................................................................................. 51
5.2 Introduction to SCUBAPRO LogTRAK ................................................... 51
5.2.1 Download dive profiles ........................................................... 51
5.2.2 Change warnings/settings of the Meridian and reading dive
computer info ......................................................................... 52
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SCUBAPRO MERIDIAN
6. Taking care of Meridian ...................................................................................... 53
6.1 Technical information ............................................................................. 53
6.2 Maintenance ......................................................................................... 53
6.3 Replacing the battery in Meridian ......................................................... 54
6.4 Warranty ................................................................................................ 55
7. Glossary ............................................................................................................... 56
8. Index ..................................................................................................................... 58
1. Introduction to Meridian
6SCUBAPRO MERIDIAN
1. Introduction to Meridian
1. INTRODUCTION TO
MERIDIAN
The Meridian User Manual is divided into
the following main sections.
1 Introduction to Meridian. This section
provides an overview of the Meridian dive
computer and describes its operating
modes and functions when on the surface.
2 Meridian as a watch. This section
describes Meridian when it is used as a
watch.
3 Meridian as a dive computer. This
section describes all settings and functions
of Meridian as a dive computer and takes
you underwater with Meridian. It’s about
everything Meridian can and will do to
enhance your safety and fun underwater.
4 Meridian accessories. This section
briefly describes the Meridian extras that
can be purchased as additional options, to
get the most from your dive computer in all
diving conditions.
5 Meridian PC interface. This section is
about personalization and customization.
It describes how to change settings, to
download and manage your logbook.
Meridian is a technologically-advanced
instrument that can accompany you
during your underwater adventures while
providing you with accurate depth, time
and decompression information. On the
surface its size and good looks makes it
an ideal everyday watch. With features
such as wake-up alarm, stop watch, and
altimeter, Meridian can handle almost every
task in your daily activities.
The buttons allow you to operate functions,
access menus and change settings while
on the surface. During the dive buttons set
bookmarks, show additional information on
the dive computer screen and activate the
backlight.
We hope you will enjoy getting to know
your new dive computer and we wish you
many wondrous dives with the Meridian.
1.1 Battery
Meridian uses a CR2032 lithium battery,
available from your authorized SCUBAPRO
dealer. To reduce the risk of fire or
burns, follow the battery manufacturers
recommendations when replacing,
recycling or disposing the battery.
Meridian will alert you when the battery is
approaching a critical value by displaying
the battery symbol. In addition, you can
verify the status of the battery on the main
menu.
When the battery symbol appears, this
means that the battery is in fact low,
although with some reserve remaining. In
dive mode the backlight will not activate or
work when the battery is low and the battery
symbol is shown. If the battery symbol
flashs the battery level is dangerously low
and neither the backlight nor the alarm
tones will be activated, and therefore diving
1. Introduction to Meridian
1. Introduction to Meridian
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SCUBAPRO MERIDIAN
is not recommended before changing the
battery.
Battery symbol
WARNING
Starting a dive when the battery symbol is
flashing can cause the dive computer to fail
during the dive! Replace the battery before
any diving activity if the flashing battery
symbol appears.
When the ‘do not dive symbol’ appears with
the battery symbol, Meridian can not be used
for diving before replaced with a new battery.
Do not dive symbol
Please refer to chapter 2.1.7 Checking
the battery status for details how to
check your Meridian battery status.
WARNING
Replacing the battery requires opening the
electronic compartment of Meridian. You
must take extreme care when performing
the battery change operation in order to
ensure the water seal of the watch. Failing
to do so will cause Meridian to flood during
your next dive and permanently damage the
dive computer. Damage to Meridian due to an
improper battery replacement is not covered
by warranty. We strongly recommend having
the battery change operation be carried out by
your authorized SCUBAPRO dive retailer.
See chapter 6.3 Replacing the battery in
Meridian for more information on how to
replace the battery.
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2. Meridian as a watch
SCUBAPRO MERIDIAN
2. Meridian as a watch
Button LIGHT, Top Left : Short press = backlight
Button +/UP, Top Right: +/UP = adds numerical values, scrolls up in the
menus
Button –/DOWN, Bottom
Right:
–/DOWN = subtracts numerical values, scrolls down
in the menus
Button SEL/ESC, Bottom
Left:
• Short press = select,
• Long press = escape (return to previous menu) or
• cancel the setting
The diagram below shows the watch menu logic in a graphic form. The diving functions are
described in detail in section 3 Meridian as a dive computer.
2. MERIDIAN AS A
WATCH
Meridian is more than just a watch. It
features:
• a wake-up alarm-clock function
• a stopwatch with lap time and 99 hours
run time
• an altimeter for tracking excursions to
the mountains.
• a thermometer
F NOTE: Considering that the metal
housing is a good heat conductor,
the temperature reading will be
warmer than reality when wearing
Meridian directly on the wrist exposed
to your skin. This does not happen
underwater as usually it is worn over
a wetsuit.
The functions of the buttons when on the
surface are summarized in the table below
and explained in detail in the following
sections.
LIGHT +/UP
–/DOWNSEL/ESC
2. Meridian as a watch
2. Meridian as a watch
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SCUBAPRO MERIDIAN
TIME & DATE
SET Sound
off
CHECK
battery state
Unit ID
SET alarm
clock STOP watch STOP watch
function
SET time Planner Planner
pages
SET 12/24h
mode LOG Logbook
pages
SET date DIVE mode
UTC Altitude meter
+/UP +/UP
+/UP
+/UP
+/UP
+/UP
+/UP
+/UP
SEL +/UP
+/UP
+/UP
+/UP
SEL
SEL
SEL
SEL Dive settings
& menus
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2. Meridian as a watch
SCUBAPRO MERIDIAN
2. Meridian as a watch
The reference point for any description of
Meridian as a watch is the main time of
day display. This is the display in which the
current time is shown in the middle row.
The upper display row shows the date.
For example the diagram below shows
Saturday, 23rd of November and the time
is one second past 10 o’clock.
24h mode
12h mode
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