SUUNTO Gekko - Manual (Page 64)

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9. GLOSSARY
Altitude dive
A dive made at an elevation greater than 300 m
[1000 ft] above sea level.
Ascent rate
The speed at which the diver ascends toward the
surface.
ASC RATE
Abbreviation for ascent rate.
Ascent time
The minimum amount of time needed to reach the
surface on a decompression stop di
ASC TIME
Abbreviation for ascent time.
Ceiling
On a decompression stop dive the shallowest depth
to which a diver may ascend based on computer
nitrogen load.
Ceiling Zone
On a decompression stop dive the zone between the
ceiling and the ceiling plus 1.8 m [6 ft]. This depth
range is displayed with the two arrows pointing
toward each other (the ”hour glass” icon).
CNS
Abbreviation for Central Nervous System toxicity.
Central Nervous
System Toxicity
Toxicity caused by oxygen. Can cause a variety
of neurological symptoms. The most important of
which is an epileptic-like convulsion which can
cause a diver to drown.
CNS%
Central Nervous System toxicity limit fraction. Also
note Oxygen Limit Fraction
Compartment
See “Tissue group”.
DAN
Divers Alert Network.
DCI
Abbreviation for decompression illness.
Decompression
Time spent at a decompression stop or range before
surfacing, to allow absorbed nitrogen to escape natu-
rally from tissues.
Decompression range
On a decompression stop dive the depth range,
between the fl oor and ceiling, within which a diver
must stop for some time during ascent.
Decompression illness
Any of a variety of maladies resulting either directly
or indirectly from the formation of nitrogen bubbles
in tissues or body fl uids, as a result of inadequately
controlled decompression. Commonly called “bends”
or “DCI”.