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POSEIDON M28 USER MANUAL
Mouthpiece position
Directly to the right of the PO2 value the mouthpeice position is communicated:
- “CC” (mouthpiece is in the Closed Circuit position)
- “OC” (mouthpiece is in the Open-Circuit position)
- “NC” (mouthpiece is not fully in either position), or “UN” (mouthpiece position
is unknown).
Descend arrow
In the unlikely event that a diver incurs a decompression obligation (i.e., the
Decompression Ceiling Alert is displayed), and the diver then ascends above
the depth at which the Decompression Stop Alert is displayed, the Descend
arrow will ash. In this situation, simply descend gradually until the Descend
arrow no longer ashes, and remain at that depth until the Decompression
Stop Alert no longer displays.
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