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English
M2 USER MANUAL
8.
GLOSSARY
AVG:
Average depth, calculated from the beginning of the dive or from the time of reset.
CCR:
Closed Circuit Rebreather.
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-L8 ADT MB algorithm.
Local time:
The time in the local time zone.
Max depth:
Maximum depth reached 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 dive computer in all calculations.
PDIS:
Profile Dependent Intermediate Stop is an additional deep stop which is
suggested by the M2 at depth where the 3rd or 4th compartment starts off-
gassing.
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
defines 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. Elapsed time since your last dive ended.
SOS mode:
The result of having completed a dive without respecting all mandatory
decompression obligations.
Stopwatch:
A stopwatch. To time certain steps of the dive.
UTC:
Universal Time Coordinated, refers to time zone changes when traveling.
Summary of Contents for M2
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