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• While PO2 is 1.4 or 1.5, the PO2 flag stays continuously lit.
• If PO2 reaches or exceeds 1.6, an audible alarm sounds twice, for three sec-
onds each time, and the PO2 value, PO2 flag, and OLI bar graph (all 8) flash.
Flashing continues until the PO2 falls back to 1.5 or less.
• PO2 warnings are logged.
• If FO2 is 21% (air), neither the PO2 indicator nor the PO2 warning appear.
(15) Oxygen limited indicator warning display
• If the oxygen limited indicator reaches 7, the OLI bar graph (7 bars) flashes for
15 seconds, and an audible alarm sounds twice, for three seconds each time.
• If the oxygen limited indicator reaches 8, an audible alarm sounds twice, for
three seconds each time, and the OLI bar graph (8 bars) stays continuously lit
until the oxygen limit indicator falls back to 7.
• The warning is logged at the point where the oxygen limit indicator reaches 8.
• If the water detection switch comes ON in the surface interval state when the
OLI is either 7 or 8, the respective warnings described above are issued.
(16) Default warning function
• If the E key comes ON and Dive mode accessed when FO2 is in the default
state, an audible alarm sounds twice, for three seconds each time.
• The FO2 values in Dive Demand A are replaced by bars.
• Default warnings are not logged.
(17) Reset function
• A function that clears Dive mode when a change in atmospheric pressure is
detected, such as when aboard an aircraft in flight.
Pressing and holding the C + D keys for approximately 15 seconds when the
depth is 1.5 m or greater and when the water detection switch is OFF initiates
a reset.
Reason: If the atmospheric pressure value falls 1500 m or more when the
water detection switch is ON (for example, when the water detector is turned
ON during flight and stays ON during descent, etc.), the dive computer remains
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