SUUNTO VYTEC User Manual
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previous value to saturation at the new
ambient pressure.
HP
Abbreviation for high pressure (= cylinder
pressure).
Multi-level dive
A single or repetitive dive that includes time
spent at various depths and whose
no-decompression limits are therefore not
determined solely by the maximum depth
attained.
NITROX
In sports diving refers to any mix with a
higher fraction of oxygen than standard air.
NOAA
United States National Oceanic and
Atmospheric Administration.
No-decompression time The maximum amount of time a diver may
remain at a particular depth without having
to make decompression stops during the
subsequent ascent.
No-decompression dive Any dive which permits a direct, uninterrupt-
ed ascent to the surface at any time.
NO DEC TIME
Abbreviation for no-decompression time
limit.
OEA = EAN = EANx
Abbreviation for Oxygen Enriched Air Nitrox.
OLF
Abbreviation for Oxygen Limit Fraction.
OTU
Abbreviation for Oxygen Tolerance Unit.
Oxygen Tolerance Unit Is used to measure the Whole-Body-