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ALTITUDE DIVING
The atmospheric pressure is lower at high altitudes than at sea level. After traveling
to a higher altitude, the diver will have additional nitrogen in his body, compared to
the equilibrium situation at the original altitude. This "additional" nitrogen is released
gradually in time and equilibrium is reached. It is recommended that you adapt to
the new altitude by waiting at least three hours before making a dive.
Before high altitude diving, the instrument must be set to the Altitude Adjustment
mode to adjust the calculations for the new altitude. The maximum partial pressures
of nitrogen allowed by the mathematical model of the dive computer are reduced
according to the lower ambient pressure.
As a result, the allowed no-decompression stop limits are considerably reduced.
SURFACE INTERVALS
The dive computer requires a minimum surface interval of 5 minutes between dives
in the Air/EAN mode. If a surface interval is shorter than 5 minutes, the next dive is
treated as a continuation of the previous dive. In the Free/Gauge mode this surface
interval is equivalent to the sampling rate.
