No Decompression Dive Mode - Oceanic DATA PLUS Owner's Manual

NO DECOMPRESSION DIVE MODE

Upon descending deeper than 5 feet (1.5 meters), the DataPlus will enter the No
Decompression Dive Mode (Fig. 37), identified by the No Decompression Dive
icon (Fig. 37b) located to the right of the Main Time display.
Information provided includes Current Depth, Maximum Depth for that dive
(and Max Depth icon), Elapsed Dive Time (and Elapsed Dive Time icon), and No
Decompression Dive Time Remaining for that depth. The Graphic Diver Inter-
face is also active, displaying nitrogen loading (TLBG), ascent rate (VARI), and
oxygen loading (O2 bar graph) if FO2 was set to a value other than 'Air'.
No Decompression Dive Time Remaining is the maximum amount of
time you can stay at your current depth before entering a decompression
situation. The No Decompression Time is calculated based on the amount
of nitrogen absorbed by 12 hypothetical tissue compartments. The rates
each of these compartments absorb and release nitrogen is mathemati-
cally modeled and compared against a maximum allowable nitrogen level.
Whichever one of the 12 is closest to this maximum level is the controlling
compartment for that depth. Its resulting value is displayed numerically
(Fig. 37a) along with the No Decompression Dive icon (Fig.37b), and
graphically as the TLBG (Fig. 37c).
As you ascend from depth following a dive that has approached the no
DataPlus
a
c
FT
FT
MAX
DATA
PLUS
GLO
Fig. 37 - No Decompression
Dive Mode
b
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