Oceanic DataMax Pro, Owner'S Manual

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end of a dive. Since Air Time is replaced by Decompression Time when
decompression diving, you cannot rely on this feature, so a different method
of alerting you to a low air situation is used instead.
When Air Time Remaining is within five minutes of required Decompres-
sion Time, the tank pressure numerals will flash and a Double Beep will
sound. This alert means that five minutes of air is all that remains for you to
perform the required decompression. This feature takes into account your
current tank pressure, breathing rate and depth for an extremely accurate
prediction of when the alert should start.
After the initial five minutes has elapsed and remaining air time equals
required decompression time, the Audible Alarm will beep Once Per Second
signaling the need for immediate ascent to the decompression ceiling. In this
manner, the DataMax Pro can help you track their required decompression
and remaining air time simultaneously. This is one of the unique features
encompassed by the Air Time Remaining display (U.S. Patent No. 4,586,136).
CAUTION ZONE – C.Z.
When you learned how to dive, you were taught not to get too close to the
No-decompression limits. The Caution Zone (C.Z.) offers you a way to
consistently monitor how close you are coming to the no-decompression limit.
Oceanic suggests always leaving the water with the Tissue Loading
Bar Graph in the low yellow Caution or green No Decom zone.
Fig. 29c – Triple Dash Display
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