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mixtures with gas switch at the optimum depth is anticipated in the calculation of the ascent time. If
you want to display the ascent time only with the current mixture, set this option in the menu
Setup/Decompression/Ascent gas = Current.
Diving with the ceiling method
The ceiling is the maximal limit of safe oversaturation. If the diver follows THE decompression ceiling,
he/she achieves the shortest possible decompression with the set parameters. However, the ceiling
method requires a high level diving ability and experience.
The ceiling depth is displayed in the upper left box. The ascent time is shown in the upper right box.
The diver can follow the ceiling depth, but he/she must always stay below this limit. Exceeding the
ceiling represents a huge risk of DCS!
Deep stops
If there is a difference greater than 18 m between the maximum depth and the first regular
decompression stop, the FREEDOM shows the depth of the deep stop in the lower right box (if deep
stops are set). When the diver reaches the deep stop depth, the countdown starts in the lower right
box instead of the deep-stop depth. The deep-stop depth and countdown are shown in blue. The
length of the deep stop depends on your setting.
The deep-stop depth is detected 1.2
m below the actual deep-stop
depth.
Deep stops are not required. When
a diver passes a deep stop (i.e. is
more than two meters above the
deep-stop depth), the time until the
next deep stop or conventional deco
stop is displayed.
If the diver terminates a deep stop and then falls below the depth of last deep stop, then the next
deep stops are overwritten and the maximum depth after the last deep stop is considered to be the
maximum depth for calculation.
Multi-gas decompression dives
Some dives require use of several gas mixes. The FREEDOM makes it possible to use up to 10
different mixtures. One mixture is reserved for the bottom mix and the other nine mixtures can be
used as travel or decompression gases.
WARNING: Diving with additional gases requires relevant training and education from an
accredited agency.