Design Aeris, Reference Manual

Page: 9 / 40

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DIVE COMPUTER PERFORMANCE
• Algorithm - Pelagic DSAT.
• No Deco Limits - closely follow PADI RDP.
• Altitude corrections and Oxygen limits - based on NOAA tables
.
DSAT* has been the standard used by AERIS in all of its dive computers until this time. It
features NDLs that are based on exposures and test data which also formed validation for
the PADI RDP. Data consists primarily of No Deco, multi level, repetitive dives at sea level.
It imposes restrictions for repetitive Deco dives, considered more risky.
*DSAT - published and protected by Diving Science and Technology (subsidiary of PADI).
ALTITUDE DIVING
Atmospheric pressure decreases as Altitude increases above sea level. Weather systems
and ambient temperature also affect barometric pressures. Consequently, Depth reading
instruments that do not compensate for the decrease in ambient pressure indicate Depth
readings shallower than the Depth they are actually at.
AERIS dive computers automatically compensate for decreased ambient pressures for
Altitudes between 3,000 (915 meters) and 14,000 feet (4,270 meters). Their programs
compensate for high altitudes by reducing No Decompression and Oxygen Exposure Lim-
its (times), thus adding a larger zone of caution.