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ENGLISH
CCR Diving
Max Operating
Depth MOD
Change the O
2
% mix by
(+) and
(–)
ppO
2
max
3. Change the oxygen fraction in increments of 1% by pushing
or
. Subgear XP-3H will
display the current fraction of oxygen, the maximum partial pressure limit (ppO
2
max) and the MOD.
4. Confirm the selected percentage with
.
Change the ppO
2
max by
(+) and
(–)
5. By pushing
or
you can change the ppO
2
max for the chosen fraction of oxygen down
to 1.0bar. Subgear XP-3H will now display the corresponding MOD for the new ppO
2
max.
6. Confirm your ppO
2
max settings with
.
4.11.3 Functions during a CCR dive
WARNING
During dives with several gas mixtures, always make sure you are breathing from the tank you intended to breath
from. Mark all your tanks and regulators, so they can under no circumstances be mixed up! Before every dive
and after changing a tank, make sure that each gas mixture is set to the correct value for the corresponding tank.
Predictive decompression prognosis
The calculation of decompression data is based on the assumption that the SP1 / SP2 change(s) of gas
mixture(s) will be performed at the previously selected switch depth(s) (setpoint 1/2). If a diver ignores a
required change or changes the SP1 / SP2 belatedly, Subgear XP-3H will readjust the decompression
calculation accordingly. In case of an ignored switch the dive computer will then base its calculations on
the assumption that the diver will ascend to the surface with the currently selected SP1 / SP2.