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LUNA 2.0 AI USER MANUAL
8 . 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 Refers to the main gas that is set for the ZH-L16 ADT MB PMG or ZH-L16C+GF PMG
algorithm
GF Gradient Factor. Gradient factors are a way to introduce conservatism to the base
algorithm and they are expressed in % values in format low/high
INT. Surface interval, the time from the moment the dive is closed out
Max depth Maximum depth attained during the dive
MB
Microbubbles: Microbubbles are tiny bubbles that can build up in a diver’s body during and
after a dive
MB-level One of the 6 steps, or levels (L0 to L5), 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
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 DIVE Minimum amount of time the diver should wait before performing another dive
NO FLY Minimum amount of time the diver should wait before taking a plane or ascending to
altitudes higher than 2000m/6562ft
No-stop time
(NST)
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 Prole Dependent Intermediate Stop is an additional deep stop which is suggested by the
dive computer at a depth where the 5th, 6th or 7th compartment starts off-gassing
PMG Predictive Multi-Gas. It lets you carry additional breathing gases in addition to your main
breathing gas
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 denes
the MOD
RBT Remaining Bottom Time. 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
OTU Oxygen Toxicity Unit. It is the degree of pulmonary oxygen toxicity produced by breathing
100% O
2
continuously at a pressure of 1 atmosphere absolute (ATA) for 1 minute
SOS mode The result of having completed a dive without respecting all mandatory decompression
obligations
SURF INT Surface interval. The time that starts at the moment the dive is closed out
Switch point The depth at which the diver plans to switch to a higher oxygen concentration mix while
using the multi-gas option
TAT Total Ascent Time. It is the time it should take the diver to get to the surface from their
present depth
UTC Universal Time Coordinated, refers to time zone changes when traveling
V1.0 – 04/2023Artbook.net 19954
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