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Situations that will sound the Alarm, if it is turned ON (a user setting), include -
Entry into Decompression Mode
PO2 => than the Max PO2 Alarm (a user setting), or => 1.60 ATA.
Descent deeper than the Max Depth Alarm (a user setting).
Nitrogen Bar Graph Alarm (a user setting).
Dive Time Remaining Alarm (a use setting).
Elapsed Dive Time Alarm (a use setting).
O2 Accumulation => allowable per dive limit, or limit for a 24 hour period.
Ascending above a required Decompression stop depth for less than 5 minutes (Condi-
tional Violation).
Ascent rate exceeds 60 feet/minute (18 meters/minute) if greater than 60 feet (18
meters), or 30 feet/minute (9 meters/minute) at 60 feet (18 meters) and shallower.
During the following situations, the beeping tone will be followed by a second
beeping tone that will not turn off when acknowledged, even if it was user Set OFF
-
Ascending above a required Decompression stop depth for more than 5 minutes
(Delayed Violation).
Decompression requires a ceiling stop depth of 70 feet/21 meters or deeper.
Being on the surface for 5 minutes after a Conditional Violation (Permanent Violation).
A single short beep (which cannot be disabled) is emitted for the following -
After the Diagnostic countdown, if everything is okay.
If the unit automatically returns to Surface Mode from Simulator Mode.