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Air Time Remaining (ATR) Display
If the DataMask's Receiver and a Transmitter are active and
properly linked, ATR is displayed on the NOR or GAU Main
Dive display as 1 - - with the ATR icon if > 60 minutes, then in
decrements of 1 minute when it is <= 60 minutes (Fig. 11a).
Time, Date, Temperature Displays
a
Time of Day and NOR/GAU Mode Time displays are shown in
Fig. 11 - NOR DIVE MAIN
hour:minute format (i.e., 1:16 represents 1 hour and 16 minutes,
not 116 minutes). Exception is the No Deco Safety Stop Time
remaining (countdown) which is shown as minutes:seconds
FRE Mode times are shown in minute:second format. Exception is No Deco Dive Time
Remaining which is hour:minute format.
The colon that separates hours:minutes (minutes:seconds) blinks once per second when the
display is indicating real time (e.g., Surface Interval, Elapsed Dive Time), and is solid (nonblinking) when times are calculated projections (e.g., Time to Fly, Plan).
The Times being displayed are identified by icons.
 SI = Surface Interval
 EDT = Elapsed Dive Time
 NDC = No DeCo time remaining
 ATR = Air Time Remaining
 OTR = O2 Time Remaining
 TAT = Total Ascent Time required
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