Uwatec Galileo sol, User Manual

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3. Diving with Galileo
59
English
For FULL lay-out, the underlying L0
information is shown in the sequence right
after the
BUDDY tank pressure and before
the CNS O
2
. This is displayed instead of
the MB level no-stop or decompression
information and remains there only for
5 seconds, after which it is replaced again
by the information relative to the active MB
level.
NOTE:
The nitrogen bar graph always
references the underlying L0 calculation.
3.5.4 Cascading MB levels
When diving with an MB level, Galileo
carries out all calculations relating to L0 and
to all MB levels in between the currently
active one and L0. This gives the diver the
fl exibility to start with a given MB level but
to cascade down to a less conservative
level during the dive: if you start the dive
at L4 but decide not to carry out all the
required L4 stops, you can cascade down
through L3, L2, L1 all the way to L0. Only
decompression stops relating to L0 are
mandatory and must be respected at all
times, whereas the level stops calculated
by the MB levels are recommended but not
mandatory. Section 3.5.5 describes how to
cascade to a lower level.
3.5.5 Level stop ignored/MB level
reduced
If a level stop is required and you ascend
1.5m/5ft or more above it, Galileo will
reduce your active MB level to the next one
compatible with the current depth. When
this happens, the new active MB level is
permanently displayed on the screen. It is no
longer possible to fi nish the dive with the MB
level set at the beginning of the dive. When
the level stop depth is the same as the deco
stop depth, ascending 1.5m/5ft above it will
cause Galileo to cascade down to L0.
At the end of the dive, for fi ve minutes after
reaching the surface, the active (reduced)
MB level is shown on the display. After fi ve
minutes Galileo changes to surface mode
and switches back to the MB level set prior
to the dive, but the reduced MB level is
recorded on the fi fth page of the logbook.
3.6 Altitude and the
decompression algorithm
Atmospheric pressure is a function of altitude
and of weather conditions. This is an important
aspect to consider for diving, because the
atmospheric pressure surrounding you has
an infl uence on ongassing and offgassing
of nitrogen. Above a certain altitude, the
decompression algorithm has to change in
order to account for the effect of the change
in atmospheric pressure.
Galileo divides the possible altitude range
in 5 classes:
- class 0 (not indicated on the computer
display): from sea level to approximately
1000m/3300ft (switch point at
905mbar);