User`s guide

Nemo Wide dive computer
6
NOTE
The alarm for any deep stops always
remains active.
 WARNING
The audible alarms should only be
disabled by experienced divers, who take
full responsibility for this operation.
EAN
This section addresses dives using EAN as the
breathing mix.
When you see the word EAN in Set dive - Mode,
press the <ENTER> button.
The general parameters for EAN dives are the
same as those for compressed air dives (AIR),
with the addition of settings for the percentage
of oxygen and its maximum partial pressure.
We recommend that you carefully read the “Set
dive - Mode - AIR” section before proceeding
further.
• oxygen percentage (%O
2
) in the mix;
• maximum O
2
partial pressure (PPO
2
);
• altitude;
• personal correction factor;
• uncontrolled ascent;
• audible alarms.
 WARNING
The use of oxygen rich mixes exposes
the diver to different hazards from those
associated with compressed air. The
diver should be aware of these risks and
understand how to avoid them.
 WARNING
Do not use breathing mixes with an oxygen
percentage greater than 50%.
 WARNING
It is essential to correctly set the oxygen
percentage in the mix to ensure correct
readouts of:
• no decompression time remaining;
• decompression stop times;
• alarm on exceeding the maximum
permitted PPO
2
.
SET  EAN  %O
2
The percentage of oxygen in the mix can be
adjusted within the interval 21% - 50%, in
increments of 1%, (Fig. 8).
Fig. 8
Use the <+> or <-> buttons to enter the desired
value.
Press <ENTER> to save the oxygen percentage
and advance to the next setting.
SET  EAN  PP
O
2
Nemo Wide sounds an alarm when the partial
pressure of oxygen reaches a pre-established
limit. This limit can be varied from a minimum
1.2 bar to a maximum of 1.6 bar, in increments
of 0.1 bar.
Use the <+> or <-> buttons to enter the desired
value.
As this value changes, Nemo Wide will show
the maximum dive depth compatible with
the oxygen percentage and maximum partial
pressure that have been programmed (Fig. 9).
Fig. 9
Press <ENTER> to save the value and move on
to the following settings, which are altitude,
personal correction factor, uncontrolled
ascent, and audible alarms covered in the
previous AIR section.
BOTTOM TIME
This section addresses dives using BOTTOM
TIME. You can set the audible alarms here.
When you see the word BOTTOM TIME in Set
dive - Mode, press the <ENTER> button.
SET  BOTTOM TIME  AL BEEP
This function enables or disables the audible
alarms. When the computer is turned on, it
displays the current setting (“ON” or “OFF”).
Use the <+> or <-> buttons to change the
setting.
Press <ENTER> to save and return to Set – Mode.
CONTROLLING THE TIME SETTINGS
In this menu you can control the current watch
data, date and temperature.
You can access the TIME option from the
main menu using the <+> and <-> keys. Press
<ENTER> to accept the TIME selection.
The current time will be displayed. Press <+>
or <-> to view the temperature and current
date (Fig. 10).
Fig. 10
Press the <ESC> button to return to the main
menu.
From this menu you can also directly access
the setting for adjusting the watch, and
from here you can adjust the time and date.
Hold down the <ENTER> button for two
seconds when the date or time appears.
You can also enter the dive data setting by
pressing <ENTER> for two seconds when the
temperature reading appears.
DIVING WITH NEMO WIDE
 WARNING
We advise that when diving you always put
Nemo Wide into Predive mode.
Always check that the dive computer is
switched on early in your dive.
Nemo Wide manages three types of dives:
AIR
EAN
BOTTOM TIME (Gauge)
To help clarify Nemo Wide functions during the
dive, the display screens have been grouped
into four phases:
Predive
Dive
Surfacing
Surface mode
PREDIVE  AIR
This operating mode remains active until
the diver goes below 1.2 meters (4 ft). The
following details are displayed (Fig. 11):
• type of dive (AIR);
• units of measurement (m-°C or ft-°F);
• type of water (Salt, Fresh);
• altitude program (if enabled) and level;
• personal correction factor (if enabled) and
level.
Fig. 11
NOTE
Before every dive, it is advisable to
enter Set Dive mode and check all the
parameter settings.
DIVE  AIR:
“NODECOMPRESSION” DIVE
When the diver descends below 1.2 meters (4
ft) Nemo Wide automatically switches to Dive
Mode and starts displaying the dive data. If
this mode persists for more than 20 seconds,
Nemo Wide will begin recording the dive
details in the Log Book memory.
The following details are displayed (Fig. 12):
• current depth (in “m” or “ft”);
• no decompression time remaining,
expressed in minutes;
• “No deco” icon;
• icons for the altitude program and personal
correction factor (if enabled).
•