It is not possible to change between AIR, MIXED and GAUGE
NOTE
modes before the instrument has counted down the no-fly time.
There is one exception to this: You can change from AIR to MIXED
mode even during the no-fly time.
When planning both air and nitrox dives during the same dive
series, you should set the instrument in MIXED mode and modify
the gas mix accordingly.
In GAUGE mode the no-fly time is always 48 hours.
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