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WHEN CEILING AND STOP ARE
DISPLAYED, MAKE A ONE MINUTE
MANDATORY SAFETY STOP IN THE
DEPTH ZONE BETWEEN 6 M AND 3 M.
You must not ascend shallower than 3 m/10 ft with the Mandatory Safety Stop warning
on. If you ascend above the Mandatory Safety Stop ceiling, a downward pointing arrow
will appear and a continuousbeeping starts. You should immediately descend to, orbelow,
the Mandatory Safety Stop ceiling depth. If you correct this situation at any time during
the dive, there are no effects on the decompression calculations for future dives.
WHEN CEILING AND STOP
ARE DISPLAYED, IMMEDIATELY
(WITHIN 3 MINUTES) DESCEND
TO OR BELOW CEILING.
If you continue toviolate the Mandatory Safety Stop, thetissue calculation model is affected
and the dive computer shortens the available no-decompression time for your next dive.
In this situation, it is recommended that youprolong your surface interval time before your
next dive.
5.12. Deep stops
The most significant factor limiting the ascent isthe ceilingdepth. Itis themaximum depth
a diver can ascend to before tissue pressures have decreased low enough. In addtion,
separate safety stops are used. Their purpose is to increase the safety margin even if
decreasing the tissue pressures does not require them. Such stops are safety stop when
surfacing and deep stops.
According to UHMS, deep stops are stops that occur deeper than the traditional decom-
pression model suggests. The purpose of deep stops is to slow down a long continuous
ascent and minimize microbubble formation and excitation.
While the Suunto Technical RGBM model is based on M-values, the use of deep stops
brings the model closer to the full RGBM model. The way of implementing deep stops is
conducted by Dr. Bruce Wienke.
If deep stop is broken it does not cause the dive computer to go into error mode. However
there is penalty applied to the following decompressions.
DURING DESCENT,
YOU ARE SHOWN
THAT A DEEPSTOP IS
NEEDED AT THE
DEPTH OF 25 M.
DURING ASCENT, YOU
ARE ADVISED TO MAKE A
DEEPSTOP AT 25 M FOR THE
DURATION SHOWN BY THE
TIMER (42 SEC. REMAINING).
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