34
2. Menus, settings and functions
you can set the sensitivity of the workload
calculation to changes in breathing pattern
(if
WORKLOAD
is set to anything other
than
HEART
, see section 2.9.5) and you
can choose to replace the oxygen bar
graph with a graphic representation of the
tank pressure (
CLASSIC
and
FULL
only).
From this menu you can also call up the gas
summary table described in section 1.12.
The RBT (remaining bottom time) is the
time you can spend at the current depth
and still have enough gas supply to make a
safe ascent and reach the surface with the
tank reserve. The RBT calculation is based
on your current breathing rate, accounts for
any existing and upcoming decompression
obligation and for any temperature gradient
in the water. It assumes an ascent at the
ideal ascent rate (defi ned in section 3.2.1).
A higher value of the tank reserve is more
conservative, but limits your diving time. A
lower value gives you more diving time but
the risk of running out of gas supply before
reaching the surface increases.
When diving with one gas mixture only,
RBT = 0 minutes triggers an alarm that
cannot be turned off (described in section
3.2.5): Galileo has computed that if you
start your ascent now you will arrive at the
surface with just the tank reserve, and any
further delay increases the risk that you
run out of gas supply before reaching the
surface. On the other hand, if you carry
additional tanks with you (TD and/or T2),
given the additional gas you can choose
for RBT = 0 minutes to be a warning only,
with audible sequence and visual message
lasting only 12 seconds. Please refer to
section 3.7 for information on diving with
more than one gas mixture.
The sensitivity of the workload calculation
to changes in breathing pattern can be
adjusted in 25 steps: this has an effect on
how the algorithm accounts for changes
in breathing pattern in the decompression
calculation (it has no effect if the
WORKLOAD
setting in section 2.9.5 is set
to
HEART
or
OFF
).
The oxygen bar graph can be replaced
with a graphic representation of the tank
pressure (
CLASSIC
and
FULL
only). If
you turn
ON
this feature, the label of the
bar graph changes from
O
2
to
TNK
. To use
this feature, you must defi ne a value of the
pressure when the tank is full. Each segment
in the left bar graph then represents one
tenth of the full value. For instance, if the
pressure of the full tank is 200bar/3000psi,
each segment will correspond to 20bar/
300psi. As you consume the gas in the
tank, the segments will gradually turn off.
Содержание Galileo sol
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