Technical data

16
A100 OPERATING MANUAL
© 2002 Design, 2012 Doc. No. 12-7271-r01 (4/25/12)
SAFETY STOP (SS), No Deco only
Upon ascent to 20 FT (6 M) for 1 second on a No Deco dive in which Depth exceeded 30 FT (9 M) for 1 second, a SS to be
taken at 15 FT (4.5 M) will appear on the Main display with a countdown beginning at 3:00 (min:sec).
• In the event that you descend 10 FT (3 M) below the SS Depth for 10 seconds during the countdown, or the countdown
reaches 0:00; the No Deco Main will replace the SS Main which will reappear upon ascent to 20 FT (6 M) for 1 second.
• In the event that you enter Deco during the dive, complete the Deco obligation, then descend below 30 FT (9 M); the SS
Main will appear again upon ascent to 20 FT (6 M) for 1 second.
• If you surface during the SS countdown, the SS will be canceled for the remainder of that dive.
• There is no Penalty if you surface prior to completing the SS or ignore it.
DIVE TIME REMAINING (DTR)
Nitrogen loading and oxygen accumulation are constantly monitored, and whichever time is the least amount available (NDC or
OTR) will be displayed as DTR on the No Deco Dive Main screen.
No Deco DTR (NDC)
NDC is the maximum amount of time that you can stay at your present depth before entering Deco. It is calculated based on the
amount of Nitrogen absorbed by hypothetical tissue compartments.
The rates each of these compartments absorb and release Nitrogen is mathematically modeled and compared against a maxi-
mum allowable level.
Whichever compartment value is closest to this maximum level is in control for that Depth, and the value will be displayed as
NDC time identified by the wave/clock/profile icon (Fig. 37a) and graphically as the TLBG (Fig. 37b).
As you ascend, the TLBG segments will recede as control shifts to slower compartments. This is a feature of the decompression
model that is the basis for multilevel diving, one of the most important advantages that AERIS dive computers offer.
O2 Time Remaining (OTR)
During Nitrox operation, O2 accumulation during a dive, or 24 hour period, is displayed on an Alternate screen as a percent of
O2 saturation allowed per dive or per day (Fig. 38a). Max allowed is 300 OTU (= 100%).
When time remaining before reaching the O2 limit becomes less than NDC, calculations for that Depth will be controlled by O2
and OTR will be displayed as DTR on the Dive Main (Fig. 39a).
b
Fig. 37 - NO DECO MAIN
(NDC is DTR)
a
Fig. 39 - NO DECO MAIN
(OTR is DTR)
a
Fig. 38 - NO DECO ALT 3
(current % O2)
a
DIVE MODE STRUCTURE


B
< 2 sec
Safety Stop
Main
ALTs
B
< 2 sec
ALTs
at 5 FT (1.5 M) for 5 sec
at 2 FT (0.6 M) for 1 sec


at 15 FT (4.5 M)
for 3 min