User manual

49
English
ALADIN SQUARE USER MANUAL
6. GLOSSARY
AVG: Average depth, calculated from the beginning of the dive or from the
time of reset.
CNS O
2
: Central Nervous System oxygen toxicity.
DESAT: Desaturation time. The time needed for the body to completely eliminate
any nitrogen taken up during diving.
Dive time: The time spent below a depth of 0.8m/3ft.
Gas 1, gas d Refers to the main gas (1) and the decompression gas (d) when using
the multi gas option of the ZH-L8 ADT MB PMG algorithm.
Local time: the time in the local time zone.
Max depth: Maximum depth attained during the dive.
MB: Microbubble. Microbubbles are tiny bubbles that can build up in a diver’s
body during and after a dive.
MB level: One of the six steps, or levels, in SCUBAPRO’s customizable algorithm.
MOD: Maximum Operating Depth. This is the depth at which the partial pressure
of oxygen (ppO
2
) reaches the maximum allowed level (ppO
2
max). Diving
deeper than the MOD will expose the diver to unsafe ppO
2
levels.
Multi gas: Refers to a dive in which more than one breathing gas is used (air and/
or Nitrox).
Nitrox: A breathing mix made of oxygen and nitrogen, with the oxygen
concentration being 22% or higher. In this manual, air is considered as
a particular type of Nitrox.
NO FLY: Minimum amount of time the diver should wait before taking a plane.
No-stop time: This is the time that a diver can stay at the current depth and still make a direct
ascent to the surface without having to perform decompression stops.
O
2
: Oxygen.
%O
2
: Oxygen concentration used by the computer in all calculations.
PDIS: Profi le Dependent Intermediate Stop is an additional deep stop which
is suggested by Square at depth where 3rd, 4th or 5th compartment
starts off gassing.
PMG Predictive Multi Gas, refers to the algorithm capable of including up to
two different Nitrox mixes in its decompression calculations.
ppO
2
: Partial pressure of oxygen. This is the pressure of the oxygen in the
breathing mix. It is a function of depth and oxygen concentration. A
ppO
2
higher than 1.6bar is considered dangerous.
ppO
2
max: The maximum allowed value for ppO
2
. Together with the oxygen
concentration it defi nes the MOD.
Press: The act of pressing and releasing one of the buttons.
Press and
hold:
The act of pressing and holding one of the buttons for 1 second before
releasing it.
INT.: Surface interval, the time from the moment the dive is closed.