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Before the dive
It is a good idea optimize your FREEDOM for your specific dive goals and needs. You can choose your
decompression strategy in many ways, prepare gases for your dive and set alarms, among many
more parameters.
Salinity
Main menu > Setup > Preferences > Salinity
Choose the salinity mode. Salt water / Fresh water
Decompression
Main menu > Setup > Decompression
Altitude
Main menu > Setup > Decompression > Altitude
The FREEDOM computer does not have its own altimeter so the altitude must be set manually.
Correct setting of altitude is crucial for safe decompression and safe no-fly limits! Check your
altitude setting before each dive and compare it with your current position or altitude of your
target destination!
Use tilting or clicking (depending on the setting) for enter the value.
Gradient factor
Main menu > Setup > Decompression > Altitude
The gradient factor (GF) serves for conservative correction of Bühlmann’s decompression model. GF
determines how far you want to be from M-Value saturation. If GF = 1.0, you are reaching M-Value. If
GF = 0.0, all inert gases are de-saturated and tissue inert pressure is equal to ambient pressure on
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