Switching Gases During a Dive

  1. Start a single-gas, multi-gas, or closed-circuit rebreather (CCR) dive.
  2. Select an option:
    • Press START, select Gas, and select a backup or decompression gas.

      NOTE: If necessary, you can select Add New and enter a new gas.
    • Dive until you reach the Deco PO2 threshold (Setting PO2 Thresholds).

      The device prompts you to switch to the gas with the highest percentage of oxygen.

      NOTE: The device does not switch gases for you automatically. You must select the gas.
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