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Air Consumption and Depth are continuously monitored and Air
Time Remaining reflects any change in circumstances. For
example, when a buddy starts breathing from your Octopus or
you suddenly find yourself swimming against a strong current
and begin breathing more rapidly, the VT3 will recognize the
change and adjust the ATR accordingly.
ATR is the time you can remain at the present Depth and still
safely surface with the Tank Pressure Reserve that you selected
during setup (End Pressure Alarm Setting).
ATR, identified by the symbols AIR and TIME (Fig. 65a), can be
viewed when an Alternate Display is accessed during dive
modes. It is also displayed digitally on the MAIN screen. In the
event that ATR becomes less than No Deco and O2 Time, it will
be displayed on the Main Display as Dive Time Remaining until
it becomes greater than one or the other.
Air Time Remaining (ATR) Alarm
When ATR decreases to 5 minutes (0:05), the Audible Alarm
will sound and the LED will flash.
If ATR decreases to 0:00, the Audible will sound and the LED
will flash again. The message LOW > AIR > TIME will scroll at
the top of the screen (Fig. 66) until ATR becomes greater than 5
minutes (0:05).
Fig. 65 - NORM DIVE ALT 2
a
Fig. 66 - Low Air Time
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