3
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PLANNING YOUR DIVE
Surface mode shows the Surface Display Icon, the number of the most
recent dive you have made, surface interval, and residual nitrogen. After 20
seconds, then once every minute, it alternates with another mode called the
“Pre Dive Planning Sequence” (Fig. 2) signified by the Pre Dive Planning
Identification Icon (Fig. 2a). When planning your next dive, the Pre Dive
Planning Sequence (PDPS) provides adjusted no-decompression limits based
upon previous dives made. The PDPS shows depths from 30 to 160 feet (9 to
48 meters) in 10 foot (3 meter) intervals and the available no-decompression
time for each. This makes dive planning extremely simple because you know
exactly how much time you can spend at each depth without making any
table calculations.
MAKING A DIVE
Once you enter the water and descend to a depth below 5 feet (1.5
meters), the PRODIGY changes to the “No-decompression Dive Mode” (Fig.
3) signified by the No Decompression Identification Icon (Fig. 3a). This mode
displays current depth, elapsed dive time (and Elapsed Dive Time Icon), no-
decompression time remaining, maximum depth for this dive (and Max
Depth Icon), nitrogen loading (and Tissue Loading Bar Graph) and ascent
rate (and Variable Ascent Rate Indicator).
Fig. 2 – Pre Dive
Planning Sequence
a.
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