11
When the oxygen toxicity level reaches 100%
the alarm message and the audible signal are
repeated for 5 seconds in one-minute intervals
after the first occurrence and for as long as the
value of CNS stays at or above 100%. Consider
terminating the dive immediately!
WARNING
Diving with oxygen toxicity at levels of 75%
or greater may put you into a potentially
hazardous situation, which could result in
serious injury or death.
3.2.4. MISSED DECOMPRESSION STOP
WARNING
Violating a mandatory decompression
obligation may result in serious injury or
death.
If you ascend above the decompression stop
depth by more than 0.3m (1ft), a downward
pointing triangle appears, an audible alarm
goes off and both the current depth and the
depth of the deco stop start blinking. This
alarm remains active until you return to the
correct depth.
WARNING
- When the missed deco stop alarm is
triggered, desaturation of the simulated
tissue compartments is halted and
resumes only when the diver returns to
the correct stop depth.
- Never ascend above the displayed
decompression stop depth.
3.2.4.1. MISSED DECO STOP MODE
If the stop depth is exceeded by more than 1m
(3ft) for more than three minutes, Smart
considers it a dive violation and the display will
show
.
In this case, if the diver attempts a repetitive
dive after surfacing, Smart will function only as
a depth gauge and timer (bottom timer mode),
and it will display
on the screen.
3.2.5. LOW BATTERY
If Smart detects that the battery power level is
safe for diving but without much reserve left,
it will show the steady battery symbol on the
display and the backlight will be disabled. If
the level of the battery decreases to the point
of making it unsafe to dive, the battery symbol
starts blinking.
NOTE
The behavior of the battery is strongly
influenced by temperature. It is therefore
possible for the battery alarm to appear
and to subsequently disappear again for a
long time.
WARNING
When the blinking battery symbol appears,
you should stop the dive, safely, without
delay.
WARNING
When the blinking battery appears in watch
mode, Smart will not function as a dive
computer.
3.3. DISPLAY INFORMATION
Upon immersion, if Smart was set to pre-
dive, it will immediately start monitoring the
dive. Otherwise, it will turn on automatically
within 20 seconds of having reached a depth of
1.2m/4ft.
The following information is shown:
- current depth
- max depth
- no deco time (or depth and duration of
deepest stop and total ascent time in case of
decompression dives)
- dive time
- temperature
- nitrogen saturation bar graph
By pressing the upper button, you can modify
the information displayed in the top row. At
each button press, the screen cycles through
max depth, average depth, MOD (nitrox only)
and an empty field.
By pressing the lower button, you can modifiy
the information displayed in the bottom row. At
each button press, the screen cycles through
temperature, oxygen percentage, CNS,
stopwatch (in lieu of the dive time) and time
of day (in lieu of the dive time; the latter has a
4-second time out after which the dive time is
displayed again). To reset the stopwatch, press
and hold the upper button while the stopwatch
is displayed.
The depth is given in 10cm resolution until
99.9 meters, after which it is given in 1m
resolution. When the depth is displayed in
feet, the resolution is always 1 foot. At a depth
shallower than 1.2m/4ft, the display shows ---.
Maximum possible depth is 150m/492ft.
The dive time is displayed in minutes. If during
the dive you ascend to the surface, the time
spent on the surface will only be counted
if you descend again below 1.2m/4ft within
3 minutes. This allows for brief periods of
orientation. While on the surface, the time will
not show as progressing but it is running in
the background. As soon as you submerge, the
time will resume, including the time spent on
the surface.
The no deco time is calculated in real time
and updated continuously. Maximum displayed
no deco time is 999 minutes. If you remain at
depth beyond a no deco time of zero minutes,
you will enter into decompression: you can no
longer make a direct ascent to the surface and
Smart displays a MANDATORY decompression
stop. Instead of a no deco time, it shows you
the depth and duration of the deepest stop and
the total ascent time (ASC), which includes
each decompression stop and the time
required to travel the vertical distance to the
surface at a rate of 10m/min / 33ft/min. ASC
includes the duration of deep stops as well.
DEEP, DECO and SAFETY stops:
- A SAFETY stop is generated as soon as the
depth of the dive exceeds 10m / 33ft. It has
a duration of 3 minutes and it is carried
out between depths of 6m / 20ft and 3m /
10ft at the end of a dive prior to surfacing.
Such stop is NOT mandatory but HIGHLY
RECOMMENDED.
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