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• Exceeding the max. ascent rate may lead to decompression sickness which
in turn can lead to serious injury or death. Never exceed the optimal and
maximum ascent rates recommended by the diving federation with whom you
completed your diving courses, regardless of the readings of the speed indica-
tor (VSI) displayed by the BLACK EANX.
• Never leave your BLACK EANX within the reach of children and under no cir-
cumstances let the children play with it. Child may choke on small parts, the de-
vice can be damaged and its settings can be changed without your knowledge.
• If you observe incorrect operation of your device or any errors in its soft-
ware, under no circumstance should you use it for diving, instead immediately
contact the producer.
• Never use software from sources other than the website of the producer to
update the device. Such software may contain errors leading to incorrect use
of the device, which may result in injury or even death.
• The BLACK EANX computer is not designed for professional use but only for
recreational purposes. The characteristics of commercial or professional dives
were not considered during the design of the BLACK EANX computer and its use
for such dives may lead to high risk of decompression sickness (DCS) or oxygen
toxicity.
READ BEFORE USE 4/4
The BLACK EANX diving computer calculates no-decompression time (NDL) and
decompression stops using the Buhlmann ZHL16-C algorithm with conservatism
mechanisms based on Gradient Factor. ZHL16-C algorithm was developed by
Prof. Albert A. Bühlmann in Laboratory of Hyperbaric Physiology at the Uni-
versity Hospital in Zürich after over 30 years of research and is recognized by
many experts as the best tested decompression algorithm in technical diving,
including dives at record-breaking depths. The algorithm is based on simulation
of 16 types of tissues of half times from 5.0 to 635.0 minutes for nitrogen and
from 1.88 to 240.03 minutes for helium.
In order to improve safety in repeated and multi-day dives, the BLACK EANX
computer has implemented an algorithm for automatically adjusting the level of
conservatism which shortens the no-decompression limit and extends decom-
pression stops in particular situations, decreasing the risk of decompression
sickness (DCS). The BLACK EANX computer will also activate additional recom-
mended and required stops if it detects that during the dive the rate of ascent
was exceeded. The time limit for those stops depends on the exceeded value.
DECOMPRESSION ALGORITHM 1/3
Attention! Overweight, poor physical condition, cardiovascular
disorders, patent foramen ovale, age above 40 years and other
factors and diseases may lead to increasing the risk of decom-
pression sickness (DCS), despite obeying the principles of correct
diving. No matter if these factors are present or not, before the
dive it is necessary to consult the doctor specializing in diving
medicine, and if needs be, to shorten no-decompression limits
and/or increase the conservatism according to the doctor’s
recommendations.