Warning Indications - Cochran commander+ Owner's Manual

oxygen exposure management. The OTU Dose is an exponential function of oxygen
partial pressure and time.
The time-dependent limit varies with length of time (days) that the diver continues to
dive without full recovery to zero OTU. The Mission OTU Clock tracks the OTU, which
is a running clock that tracks long-term Oxygen exposure. This clock may run for
several weeks if frequent dives are made using high levels of PO2. The current Mission
Clock, CNS, and OTU can be seen via the Analyst
The recovery portion of the OTU algorithm is a linear reduction of OTU over time. The
Mission OTU clock is reset to 0:00 when the OTU Dose reaches zero.
Should the OTU Dose reach 50% of the maximum allowable, the audible alarm will
sound and the "MAX DEPTH" left digit will be replaced with an "O" followed by the two
digit OTU Dose percentage. All three of these digits and the "WARNING" legend will be
flashing. Symptoms of Pulmonary Oxygen Toxicity include burning in the throat and
chest, coughing, and shortness of breath. Discontinue diving and consult a Physician
should any of these, or other, symptoms appear.
WARNING INDICATIONS: Failure to observe audible and/or visual warnings and take
corrective action may result in injury or death.
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If the diver is ascending faster than the selected maximum ascent rate, then the
hollow bar of the ascent bargraph will flash and the "WARNING" legend will
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PC interface.
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