18
Pre Dive Planning Sequence (PDPS)
The PDPS (Fig. 11) provides a sequence of theoretical dive times
available for depths ranging from 30 feet (9 meters) to 190 feet
(57 meters) in 10 foot (3 meter) increments.
No decompression times (limits), or NDLs, are only displayed for
depths where there is at least 3 minutes of theoretical dive time
available at the depth, taking into account a descent rate of 60
feet (18 meters) per minute.
The PDPS should be reviewed prior to every dive to help you plan
your dive as required to avoid exceeding no decompression
limits. For repetitive dives, it indicates adjusted dive times that
are available for the next dive, based on residual nitrogen
following the last dive and surface interval.
WARNING: The available dive times provided by the
PDPS are only predictions. Depending on cylinder
size and air consumption rate you may have less time
available than indicated because of those or other
limitations.
SET MODE
After gaining access to Set Mode, settings can be made in
sequence one after the other, or you can access a specific item
that you want to set, bypassing others.
Fig. 11 - PDPS
NDLs at Sea Level
(no dive made yet)
Depth
NDL
feet (meters)hours:mins
30 (9)
4:20 (4:43)
40 (12)
2:17 (2:24)
50 (15)
1:21 (1:25)
60 (18)
:57
(:59)
70 (21)
:40
(:41)
80 (24)
:30
(:32)
90 (27)
:24
(:25)
100 (30)
:19
(:20)
110 (33)
:16
(:17)
120 (36)
:13
(:14)
130 (39)
:11
(:11)
140 (42)
:09
(:09)
150 (45)
:08
(:08)
160 (48)
:07
(:07)
170 (51)
:07
(:06)
180 (54)
:06
(:06)
190 (57)
:05
(:05)
