12
based upon the diver’s previous dive profiles. The PDPS automatically
replaces Surface Mode once each minute. The information displayed is
Previous Dive #, Depth, No-decompression Dive Time, Tank Pressure, and
the Tank Pressure Bar Graph.
WARNING: The PDPS predicts only no-decompression times for
subsequent dives. Depending on tank size and air consumption, you
may have less time available than shown on the PDPS because of air or
other limitations.
PDPS no-decompression times are displayed up to depths where there is
less than one minute available. This takes into account a descent rate of 75
feet per minute. Before a “clean” dive (no dives in 24 hours) the PDPS no-
decompression limits are those found on page 56 in the Reference section.
4. NO-DECOMPRESSION DIVE MODE
No-decompression Dive Mode appears when the diver descends deeper
than five feet (Fig. 11). It can be recognized by the “AIR” or “NO DEC”
Mode Label under the Dive Time Remaining display. No-decompression Dive
Mode numerically displays Dive #, Depth, Tank Pressure, and NO DEC or
AIR Dive Time Remaining (whichever is less). The Graphic Diver Interface
is also active, displaying the TLBG, VARI, and Tank Pressure Bar Graph.
Fig. 10 – Pre Dive
Planning Sequence
®
DataMax
PRO
®
N
O
D
E
C
O
M
C
Z
.
.
1
0
F
T
S
T
O
P
2
0
F
T
3
0
5000 40003000
T
I
M
E
T
A
N
K
A
S
C
E
N
T
4
0
#
#
PLAN
PLAN
DEPTH
DEPTH
NO DEC
NO DEC
PSI
PSI
FT
FT
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