Mares rgbm m1 User Manual
CONTENTS
M1 DIVE COMPUTER 24
WARNINGS, CAUTIONS AND SAFETY RULES 24
QUICK GUIDE 27
TECHNICAL/FUNCTIONAL CHARACTERISTICS 28
T
ECHNICAL CHARACTERISTICS 28
F
UNCTIONAL CHARACTERISTICS 28
O
PERATING MODES 29
U
TILITY FUNCTIONS 29
M
ONITORING OF THE BATTERY POWER LEVEL 29
A
UTOMATIC SWITCH-OFF 29
D
ISPLAY BACKLIGHT 29
SETUP OF TECHNICAL PARAMETERS 30
DIVING WITH THE M1 33
A
CTIVATING DIVE MODE 33
A
IR DIVE 33
"N
ITROX" DIVE 37
"B
OTTOM TIME"39
SURFACE MODE 39
POST DIVE SURFACE TIME 39
C
ALENDAR AND CLOCK 40
S
CROLLING OF NO DECOMPRESSION LIMITS 40
D
IVE SIMULATOR 41
L
OGBOOK 41
I
NTERFACING TO A PC 43
FAQ 43
MAINTENANCE 44
R
EPLACING THE BATTERIES 44
DIVE COMPUTER
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24
M1 DIVE COMPUTER
Congratulations. The dive computer which you have
purchased is the result of the latest MARES technology,
and has been designed to ensure maximum safety,
efficiency, reliability and long life.
This computer is further enhanced by certain innovative
features, which place it at the top of the MARES
product range.
New RGBM Mares-Wienke decompression
algorithm with deep stop option.
Operating modes: "Air", "Nitrox", "Bottom Time".
"Bottom Time" with seconds display.
Optical port for uploading data to a PC.
Increased Logbook capacity (approximately 38
hours of profiles, with points at 20 sec intervals).
Timer-controlled or permanent backlighting.
In this manual you will discover all the other functions
that make M1 one of the most complete computers
available on the market today. You will find all the
instructions for learning how to use the M1 computer
and its functions.
MARES thanks you for your choice and urges you to
always practice safe and responsible diving.
WARNINGS, CAUTIONS
AND SAFETY RULES
Important:
Any critical information or warnings that might
affect the performance or result in the injury of the
technician, COMPUTER M1 owner, or other persons
are highlighted with the following symbols:
Before diving, make sure you have read and understood
the entire instruction manual.
!
WARNING
Do not dive in mountain lakes without
having first checked that the appropriate
altitude program is enabled.
!
WARNING
Check the battery power level before
starting your dive.
Do not dive if the <battery> icon indicates
that the battery is low. Replace the batteries.
!
WARNING
Do not dive if the instrument display seems
anomalous or unclear.
!
WARNING
Before the dive, check that the units of
measurement have been set correctly.
Incorrect settings might cause confusion
resulting in underwater behavior errors.
!
WARNING
In addition to the dive computer, also use a
depth gauge, a submersible pressure gauge,
a timer or watch, and dive tables.
!
WARNING
The dive computer cannot prevent possible
decompression problems.
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
The M1 computer is designed exclusively
for recreational sports use and not for
professional applications.
!
DANGER
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury.
!
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death
or serious injury.
!
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.
M1 RGBM.qxd 06/10/2005 15.12 Pagina 24
The safety of a dive can only be assured by adequate
preparation.
MARES recommends taking a specialist training
course before diving with a dive computer.
MARES recommends scrupulous observance of the
simple safe diving rules set out in the paragraph on
"responsible diving practices".
RESPONSIBLE DIVING PRACTICES
Always plan your dives in advance.
Never exceed the limits of your skill and experience.
Go to the 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 at 10 - 16 feet (3 - 5
meters) for at least 3 minutes.
After the safety stop, 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 in the case of a
strenuous dive, start ascending well before
reaching the NO DEC limits.
If it is a decompression dive, prolong the
decompression stop nearest to the surface by
several minutes.
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 planned decompression dives and do not
dive deeper than 130 feet (40 meters) unless
you have been specifically trained in this type of
technical diving.
Avoid repetitive "square profile" dives (dives to a
single depth) deeper than 60 feet (18 meters).
Always wait as long as possible before flying after
a dive (at least 12 and preferably 24 hours), in
accordance with the recommendations of the
Divers' Alert Network.
MARES recommends that divers never exceed the
maximum permitted depth for their qualification.
Diving below 130 feet (40 meters) or outside the nodecompression limits significantly increases the risk
of decompression sickness.
Always ascend several minutes before going into DEC
mode, and allow yourself even more time in the case of
cold water conditions, repetitive dives deeper than 60
feet (18 m), or for any dive involving unusually high
exertion. Failure to do this will increase your risk of
decompression sickness.
!
WARNING
Recreational divers should NOT dive deeper
than 40m (130 ft). 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
Before starting a "Nitrox" dive, check that
the dive computer is set to "Nitrox" mode,
then check the composition of the
breathing mix you will be using and enter
its oxygen percentage in the appropriate
SET function.
Entering an incorrect oxygen percentage
will lead to errors in the readouts for:
- no-decompression time remaining;
- decompression stop times;
- alarm for exceeding the maximum
permitted O
2 partial pressure.
!
WARNING
The use of oxygen-rich mixtures exposes the
diver to different hazards from those
associated with compressed air. The diver
must be aware of these risks and understand
how to avoid them.
!
WARNING
M1 may be used with oxygen-rich
mixtures (nitrox) ONLY by suitably trained
and certified divers. Attempting to dive
without adequate nitrox training might
result in serious injury.
DIVE COMPUTER
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26
Do not compress your M1 computer in a hyperbaric
chamber. The instrument can be seriously damaged
if it is not submerged in water.
!
WARNING
Never fly within 24 hours of your last dive,
or in any case wait until the M1 <no-fly>
indication disappears.
!
WARNING
NEVER use your COMPUTER or any other
dive computer for repetitive "square profile"
dives (dives to the same or nearly the same
depth) deeper than 60 feet (18 m). This is
an unsafe diving practice which will greatly
increase your risk of DCS, regardless of what
your COMPUTER reads.
!
WARNING
NEVER dive alone. M1 cannot replace the
assistance provided by a diving buddy.
!
WARNING
NEVER dive deeper than 130 feet (40 m) or
do planned decompression dives with the
COMPUTER unless you are a trained and
certified technical diver (IANTD, TDI, ANDI,
PSA, etc.) familiar with the skills and risks of
deep air diving, and licensed at least to the
level of Deep Air diving for depths beyond
130 feet (40 m). Even with this level of
certification and experience, this type of
technical dive entails a much higher risk of
DCS, regardless of the dive table or
computer used. You must be aware of and
willing to accept these risks before
attempting such a dive.
M1 RGBM.qxd 06/10/2005 15.12 Pagina 26
QUICK GUIDE
1 <MODE> BUTTON.
2 <-> BUTTON.
3 DIVE - dive time.
DIVE - temperature.
CLOCK - year.
LOGBOOK - dive n°.
4 DIVE - depth.
DIVE - maximum depth.
CLOCK - month.
5 DIVE - no decompression time remaining.
DIVE - duration of the specified.
decompression stop.
DIVE - total ascent time.
CLOCK - date.
Bottom Time indicator, "Bt".
6 Decompression stop depth.
CLOCK - hour.
7 DIVE - % CNS O
2.
DIVE - % O
2.
CLOCK - minutes.
6+7 SURF - surface time.
SURF - "no fly" time.
SURF - desaturation time.
Stop Mode indication, "StoP".
8 % ascent rate.
9 Decompression stop depth indicators.
10 Omitted decompression stop indicator.
11 Uncontrolled ascent indicator.
12 Max % CNS O
2 error indicator.
13 Low battery indicator.
14 "No fly" indicator.
15 "Desat" indicator.
16 Altitude level.
17 Unit of depth measurement.
18 Unit of temperature measurement.
19 Fresh / seawater program selection.
20 Nitrox dive indicator.
21 Active mode indicator.
DIVE COMPUTER
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TECHNICAL/FUNCTIONAL
CHARACTERISTICS
TECHNICAL
CHARACTERISTICS
DEPTH MEASUREMENT:
Maximum displayed depth: 150 m (495 ft).
Measurement resolution: 10 cm in the 0-100 m
range / 1 m in the 100-150 m range.
Temperature compensation of the measurement.
Measurement accuracy: from 0 to 80 m, ±1% of
full scale.
Calibration in fresh water.
Difference in sea water: 2.5%.
TEMPERATURE MEASUREMENT:
Measurement range: -10 / +50 °C (14/122°F).
Measurement resolution: 1°C.
Measurement accuracy: ±2°C (±2°F).
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 multi-day diving.
Deep stop.
10 m/min ascent rate.
Display backlight: timer-controlled and permanent
Power supply: 2 alkaline 1.5 V batteries (type AAA)
easily replaceable by the user.
Battery life:
Approximately 12 months with 50 dives and
occasional use of the backlight.
Approximately 10 dives with the backlight
always on.
Operating temperature: from -10 to +50°C
(14/122°F).
Storage temperature: from -20 to +70°C
(-4 /+158°F).
FUNCTIONAL
CHARACTERISTICS
Operating modes:
“Air”.
"Nitrox".
"Bottom Time".
Stop Mode: lockout in case of omitted stop and/or
uncontrolled ascent (unless disabled by the user).
Depth display: meters/feet.
Temperature display: °C/°F.
Fresh/sea water selection: manual.
Altitude programs:
P0 (0-700 m) (0-2300 ft).
P1 (700-1500 m) (2300-4900 ft).
P2 (1500-2400) (4900-7900 ft).
P3 (2400-3700 m / 7900- 12100 ft).
Decompression stops: up to 24 meters (79 feet).
Audible alarms, which can be disabled:
Low battery.
Deco stop depth violation.
Excessive ascent rate.
No decompression limits reached.
Maximum permitted depth for the
programmed value of max PPO2.
Simulator mode.
Scrolling of no-decompression limits: from 12 to
48 meters (39 to 157 feet).
Calendar clock: Year, month, date, hour, minutes
(leap year management).
PC Interface: Optical, with RS232 serial adapter.
User programmable parameters (via the buttons or
the PC interface):
"Air"/"Nitrox"/"Bottom Time".
Percentage Oxygen in Breathing Mix (from
21% to 50% in increments of 1%).
Max PPO2 (from 1.2 to 1.6 bar) (from 17.4 to
23.2 psi).
Altitude program.
Temperature measurement unit: °C / F.
Depth measurement unit: meters / feet.
Fresh/sea water.
Audible alarms (on/off).
Stop mode on uncontrolled ascent (on/off).
Calendar clock settings.
Clear residual nitrogen memory.
History:
Total number of dives logged.
Total dive hours and minutes logged.
Greatest depth logged.
Coldest temperature logged.
Dives stored in logbook: 50 with profile for a
maximum of approximately 38 hours.
Profile point interval: 20 Sec.
Data stored in logbook:
Start date and time of the dive (year, month,
date, hour and min).
Dive settings:
Operating mode: "Air", "Nitrox", "Bottom
Time".
Salt/Fresh.
Altitude program.
% O2 in the breathing mix.
Maximum permitted O2 partial pressure
setting (PPO2 max).
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Technical data:
Dive duration.
Max depth (resolution 10 cm).
Min temperature.
% CNS O2 at start of dive.
% CNS O2 at end of dive.
Underwater behavior errors:
Temporary overshoot of deco stop.
Omitted deco stop.
Excessive ascent rate.
Uncontrolled ascent.
Exceeded maximum permitted partial
pressure of O2.
Exceeded max permitted % CNS O2.
Profile points at 20 second intervals:
max depth reached within each interval
(resolution 10 cm).
excessive ascent rate.
omitted deco stop.
Deco / no deco.
OPERATING MODES
The nine operating modes of the M1 dive computer
are listed below:
1. OFF mode.
2. DIVE mode.
3. SURF mode.
4. SET mode.
5. CLOCK mode.
6. PLAN mode.
7. SIMUL mode.
8. LOGBOOK mode.
9. PC mode.
As shown in Fig. A, it is possible to advance from
one mode to the next by pressing <Mode>, or to go
back to the preceding mode by pressing <->.
UTILITY FUNCTIONS
M
ONITORING OF THE BATTERY
POWER LEVEL
The M1 periodically monitors the battery power level.
If the battery power is found to be low (level 1), an
audible alarm is sounded, the battery icon appears
and the display backlight function is disabled.
If battery power level 1 is reached during a dive, the
battery icon appears but the audible alarm is
inhibited.
From the time when the battery icon first appears, it
is possible to do 5 more dives (see chapter FAQ).
When the battery reaches its lowest power level
(level 2), the "off bAt" message appears, Fig. 1, and
the M1 is disabled.
FIG. 1
Even if the dive computer is not used, the batteries
should be replaced at least every 12 months.
AUTOMATIC SWITCH-OFF
If the M1 is ON but no buttons are pressed for a
certain amount of time, it will automatically switch
itself OFF. The delay before automatic switch-off varies
depending on the current operating mode.
DIVE - PreDive 10 min
DIVE - Dive NEVER
SIMUL - Dive, PostDive and Surface 15 min
LOGBOOK - automatic scrolling of the profile 10 min
Under all other conditions 3 min
The switch-off delay timer is cleared whenever a
button is pressed, and in PC mode it is cleared at each
transmission.
After a dive, if the no-fly time is not zero, the M1
switches to OFF mode but the display remains active,
showing some information. When the no-fly time goes
to zero the display switches off.
DISPLAY BACKLIGHT
The illumination of the backlight is enabled in DIVE
Mode and can be activated in two ways:
PREDIVE
15 sec timer-controlled: press the <-> button for
approximately 2 sec.
DIVE
15 sec timer-controlled: press and release the
<-> button.
Always on: press the <-> button for approximately
2 sec; the backlight can then be switched off by
pressing the <-> button again.
DIVE COMPUTER
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SETUP OF TECHNICAL
PARAMETERS
SET mode can be accessed, as shown in Fig. A, by
pressing the <Mode> button from DIVE or SURF mode,
or by pressing the <-> button from CLOCK mode.
SET mode is subdivided into five function groups,
SET1.... SET5, as shown in Fig. B. It is possible to
navigate through the different SET function groups in
the following manner:
To enter a given SET function group, press the
<Mode> button for approximately 2 sec.
Alternatively, press and immediately release the
<Mode> button to skip to the next SET function.
Press and immediately release the <-> button to
go back to the preceding SET function.
From SET5, pressing the <Mode> button saves any
changes made to the settings and goes on to CLOCK
mode. The parameters within a given SET function
group are modified using the <-> button.
SET 1 - SETUP OF "AIR", "NITROX",
"BOTTOM TIME" OPERATING
MODE AND ASSOCIATED
PARAMETERS
The display initially shows the following parameters,
(fig. 2):
"Nitrox" icon.
"Air".
"Bt".
FIG. 2
To enter SET1 press the < Mode > button for
approximately 2 sec.
Alternatively, to advance to SET2, press and immediately
release the <Mode> button .
OPERATING MODE SETUP: "AIR",
"NITROX", "BOTTOMTIME"
The display shows the currently active operating
mode. Press the <-> button to change the setting.
If 'Nitrox' mode is selected, pressing the <Mode>
button will advance to the setup of % O2 and
then of max PPO2. Otherwise, if "Air" or "Bt"
mode is selected, pressing the <Mode> button
advances to SET2.
"NITROX" BREATHING MIX SETUP
The percentage of O2 in the breathing mix can be
entered in the range between 21% - 50%, in
increments of 1% (fig. 3). Press the <-> button to
increase the percentage. Press the <Mode> button
to save the percentage value and advance to the
next parameter.
FIG. 3
!
WARNING
It is essential to correctly set the oxygen
percentage in the breathing mix to ensure
correct readouts of:
- no decompression time remaining;
- decompression stop times;
- alarm for exceeding maximum permitted
PPO
2.
!
WARNING
Do not use mixes with an O2% greater
than 50%.
!
WARNING
If you have completed a NITROX dive and
are planning a repetitive dive using
compressed air, set your dive computer for
NITROX mode with a % O2 of 21%. In this
way, the monitoring of the % CNS O
2 will
remain active.
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MAXIMUM O2 PARTIAL PRESSURE SETUP
The maximum partial pressure of O2, which
triggers an alarm if exceeded, can be
programmed between a minimum of 1.2 bar (17.4
psi) and a maximum of 1.6 bar (23.2 psi) in
increments of 0.1 bar (1.45 psi) (fig. 4).
Increase the value by pressing the <-> button.
Press the <Mode> button to save the changes
made and advance to SET2.
FIG. 4
SET 2 - MAIN PARAMETER SETUP
The display initially shows the various parameters
which can be programmed in the SET2 function group
(fig. 5):
Altitude program.
"°C" or "°F" temperature units.
"m" or "ft" depth units.
"salt" or "fresh" water.
FIG. 5
To enter SET2 press the < Mode > button for
approximately 2 sec.
To skip to SET3 press and immediately release the
<Mode> button.
To go back to SET1 press and immediately release
the <-> button.
ALTITUDE PROGRAM
On entering this setup, the currently selected
altitude program (P0, P1, P2, P3) is displayed;
press the <-> button to select the next altitude
program. Press the <Mode> button to skip to
the next parameter.
TEMPERATURE UNIT SETUP
On entering this setup, the currently selected unit
of measurement will start blinking; use the <->
button to change the setting. Press the <Mode>
button to skip to the next parameter.
DEPTH UNIT SETUP
On entering this setup, the currently selected unit
of measurement will start blinking; use the <->
button to change the setting. Press the <Mode>
button to skip to the next parameter.
FRESH/SEA WATER SETUP
On entering this setup, the currently selected
option (fresh or seawater) will start blinking. Use
the <-> button to change the setting. Press the
<Mode> button to skip to SET3.
SET 3 - OPTIONAL PARAMETER SETUP
The display initially shows the indications of the
parameters which can be programmed in the SET3
function group (fig. 6):
"BEEP".
Ascent rate icons.
To enter SET3, press the <Mode> button for
approximately 2 sec.
To skip to SET4, press and immediately release the
<Mode> button.
To go back to SET2, press and immediately release
the <-> button.
FIG. 6
BEEPER SETUP
This function is used for inhibiting or enabling
the audible alarms.
On entering this setup, the 'beep' message appears
together with the current setting (ON or OFF).
DIVE COMPUTER
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