Oceanic GEO 2 Operating Manual - page 113
113
If any portions of the display are missing or appear dim, or if a Low
Battery Condition is indicated, return your GEO 2 to an Authorized Oceanic
Dealer for a complete evaluation before attempting to use it.
ALTITUDE SENSING AND ADJUSTMENT
Altitude (i.e., ambient pressure) is measured upon activation and every 15 minutes until a
dive is made.
> Measurements are only taken when the unit is dry.
> Two readings are taken, the second reading 5 seconds after the first. The readings
must be within 1 foot (30 cm) of each other to record that ambient pressure as the
current Altitude.
> No adjustments are made during any time that the Wet Contacts are bridged.
> When diving in high altitude waters from 3,001 to 14,000 feet (916 to 4,270
meters), the GEO 2 automatically adjusts to these conditions providing corrected
Depth, and reduced No Deco and O2 Times at intervals of 1,000 feet (305 meters).
> When the Conservative Factor is set On, NDLs are calculated based upon the next
higher 3,000 foot (915 meter) Altitude.
> At Sea Level, calculations are based upon an Altitude of 6,000 feet.
> All adjustments for Altitudes greater than 11,000 feet (3,355 meters) are then made
to allowable dive times for 14,000 feet (4,270 meters).
> The GEO 2 will not function as a Dive Computer above 14,000 feet (4,270 meters).