SUUNTO D9 User Manual
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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 naturally
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”.