User`s guide

Nemo Air Dive computer
8
FIG. 16
Use the <+> or <-> buttons to adjust the values.
Press and release the button to change the
value by one unit at a time, or hold down the
buttons to scroll.
Press the <CENTRAL> button to record the
new setting and move on to the next.
The criteria for changing and recording is
always the same.
After making all of your changes, you return to
the SET WATCH menu.
DIVING WITH NEMO AIR
With Nemo Air you can dive in the following
modes:
• AIR
• EAN
• BOTTOM TIME (Gauge)
To help clarify Nemo Air functions during the
dive, the display screens have been grouped
into four phases:
• PREDIVE
• DIVE
• SURFACING
• SURFACE MODE
To enter PREDIVE mode, press the
<CENTRAL> button when the following text
appears in the graphic section of the screen:
 WARNING
Early in your dive, always check that the
dive computer is switched on.
 WARNING
We advise that when diving you always put
Nemo Air into PREDIVE mode.
BREATHING RATE GAUGE
The breathing rate value is updated every
20 seconds.
The information shown is normalized with
respect to ambient pressure to make it easier
to understand.
For example, if a diver breathing normally
at the surface has an air consumption of
15 liters/min, when breathing at the same
rate at a depth of 10 meters his consumption
would become 30 liters/min, and at 30 meters
it would be 60 liters/min. This kind of reading,
though correct, would not be at all clear.
•
Normalization removes the effect of variations
in depth, so that the data displayed gives a direct
indication of the diver’s actual breathing rate.
With reference to the above example, the
instrument would display a breathing rate of
15 liters/min at every depth.
LOWAIR ALARMS
If the measurement of tank pressure drops
below 100 bar, or the set value (RESERVE H),
a brief audible alarm will sound and the air
pressure value will blink continuously.
If the measurement of tank pressure is lower
than 50 bar, or the set value (RESERVE L), a
continuous alarm will be triggered, and the
word DANGER will appear.
Pressing any button will clear the alarms.
When the tank pressure drops below 30 bar
(450 psi) the alarms will be switched on again.
The alarms can be switched off again by
pressing any button.
DIVE  AIR
PREDIVE  AIR
This operating mode remains active until
the diver goes below 1.2 meters (4 feet). The
following details are displayed (figure 17):
• type of dive (AIR);
• units of measurement (m-°C or ft-°F);
• type of water (SALT, FRESH);
• altitude program (if enabled) and level;
• personal correction factor (if enabled)
and level;
• tank pressure in bar or psi and tank capacity
in liters or cubic feet, alternately.
FIG. 17
To exit this mode and return to the main menu,
press and hold the <CENTRAL> button.
 WARNING
Even if the tank volume is entered under
SET TANK in liters and tenths, the
volume will always be displayed in liters
without the tenths. The air consumption
calculations are performed using the
actual capacity entered.
NOTE
If you remain in PREDIVE mode for longer
than 10 minutes without pressing any
buttons, Nemo Air will switch off.
NOTE
It is advisable to check all parameter
settings before every dive.
DIVE  AIR: “NODECOMPRESSION” DIVE
Once you descend past 1.2 meters (4 feet),
Nemo Air switches to DIVE mode and begins
showing dive data.
Remaining in this mode for more than
20 seconds will make the computer begin
recording the dive details in the LOGBOOK
memory.
The following details are displayed (figure 18):
FIG. 18
• current depth (in “m” or “ft”);
• no-decompression time remaining,
expressed in minutes;
• NO DECO icon;
• DEEPSTOP icon (if active);
• icons for the altitude program and personal
correction factor (if enabled);
• temperature (in °C or in °F);
• total length of the dive (DIVE TIME);
• ascent rate in analog and digital mode;
• tank pressure in bar or psi;
• air time remaining at the current depth;
• breathing rate in liters/min or cubic
feet/min.
In this mode, the <+> and <-> buttons have the
same function: pressing either one will display
the following information for a few seconds
(figure 19):
FIG. 19
• maximum depth reached;
• current time;
• current temperature;
• application of the PLAN DEEPSTOP icon and
the DEEPSTOP level (if activated);
• ascent rate in analog and digital mode;
• tank pressure in bar or psi;
• air time remaining at the current depth;
• breathing rate in liters/min or cubic
feet/min.
NOTE
To activate the display backlight, press the
<CENTRAL> button.
Pressing and holding the <+> or <-> key for a
few seconds will temporarily display the dive
settings.