1. Introduction to Galileo
15
English
1. Introduction to Galileo
F
NOTE:
- The Smart transmitter has a range
of approximately 1.5m/5ft.
- To maximize the life of the battery,
the transmitter turns itself off when
there is no pressure change for
more than 40
seconds. It also
turns itself off when the pressure is
14bar/200psi or less.
- If a transmitter battery is weak,
Galileo alerts you with a screen
message referencing the tank
designation assigned to the
transmitter in question.
See Chapter 5 for information on how to
replace the battery.
1.12 Gas summary table
Galileo features a
Gas summary table
,
which shows tank pressure, oxygen
concentration, ppO
2
max and MOD for your
tank and, if applicable, the tank pressure of
your buddy. This allows you to have a quick
overview on the surface before starting the
dive.
F
NOTE:
In order to receive tank information,
the pertinent transmitters must be on
and within range (1.5m/5ft) of your
Galileo.
The
Gas summary table
can be reached
from the
Gas integration
menu (see
section 2.8.2) or simply by
pressing and
holding
the middle button (marked “
LOG
”)
while in
time of day
display.
1.13 PDIS
1.13.1 Introduction to PDIS (Profile-
Dependent Intermediate Stop)
The main purpose of a dive computer is to
track your nitrogen uptake and recommend
a safe ascent procedure. Diving within the
so called no-stop limits means that at the
end of the dive you can ascend directly to
the surface, albeit at a safe ascent rate,
while for dives outside of the no-stop limit
(so-called decompression dives), you must
perform stops at certain depths below the
surface and allow time for excess nitrogen
to be expelled from your body before
finishing the dive.
In both cases, it can be beneficial to stop
for a few minutes at an intermediate depth
between the maximum attained depth
during the dive and the surface or, in case
of a decompression dive, the first (deepest)
decompression stop.
An intermediate stop of this kind is beneficial
as soon as the ambient pressure at that
depth is low enough to ensure that your
body is predominantly offgassing nitrogen,
even if under a very small pressure gradient.
In such a situation, you can still cruise along
the reef and enjoy the dive, while your body
gets a chance to slowly release nitrogen.
In recent times, so called “deep” stops have
been introduced in some dive computers
and tables, defined as half the distance
from the maximum reached depth and
the surface (or the lowest decompression
stop). Spending 2 or 15 minutes at
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