You can enter up to twelve gases for each gas dive mode. Decompression calculations include your decompression gases, but do not include your backup gases.
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Hold
MENU.
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Select
.
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Select a dive mode.
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Select the first gas in the list.
For single-gas or multi-gas dive modes, this is the bottom gas. For the closed-circuit rebreather (CCR) dive mode, this is the diluent gas.
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Select
Oxygen, and enter the oxygen percentage of the gas blend.
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Select
Helium, and enter the helium percentage of the gas blend.
The device calculates the remaining percentage as the nitrogen content.
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Press
BACK.
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Select an option:
NOTE:
Not all options are available for all dive modes.
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Select
Add Backup, and enter the oxygen and helium percentage for your backup gas.
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Select
Add New, enter the oxygen and helium percentage, and select
Mode to set the intended use for the gas, such as decompression or backup.
NOTE:
For the multi-gas dive mode, you can select
Set as Travel Gas to set a decompression gas as your intended gas for descending.