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MANTIS USER MANUAL
4.8.9.1 CNS O
2
= 75%
MANTIS tracks your oxygen uptake via
the CNS O
2
clock. If the calculated value
of CNS O
2
reaches 75%, MANTIS will
emit a sequence of audible beeps for 12
seconds and the % symbol will be blinking
in the bottom right corner. The blinking will
continue until the value of CNS O
2
drops
under 75%.
4.8.9.2 No-Stop time = 2 minutes
If you wish to avoid unintentionally
performing a decompression dive, MANTIS
can activate a warning when the no-stop
time reaches 2 minutes. This applies to
current selected MB level no-stop time
(see chapter Diving with MB levels for more
information on MB level diving). It gives you
the opportunity to start ascending before
incurring a decompression stop or a level
stop obligation.
MANTIS emits a sequence of audible
beeps for 12 seconds and the no-stop time
will blink. The blinking will continue until
you ascend sufficiently for the no-stop time
to increase to 6 minutes, or until MANTIS
enters into decompression.
4.8.9.3 Entering decompression
MANTIS can activate a warning when
the first mandatory decompression stop
appears. This alerts the diver to the fact
that a direct ascent to the surface is no
longer possible.
When the no-stop time ends and a
mandatory stop is required before reaching
the surface, MANTIS emits a sequence
of audible beeps and the DECO STOP
symbol blinks, both for 12 seconds.
4.8.9.4 MB LEVEL ignored
When you have set MB level higher than
L0 and you reach a depth shallower than
the deepest required MB level stop, this
warning will be activated. MANTIS emits
a sequence of audible beeps and the MB
level stop symbol, MB level depth and MB
level time will blink for 12 seconds.
Alarms
can not be turned off because
they represent situations that do require
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