Dive at altitude range 4:
no deco data (gauge mode)
In order to assure optimal decompression even at higher altitudes, the 3m (10ft)
decompression stage is divided into a 4m (13ft) stage and a 2m (7ft) stage in altitude ranges
1, 2 and 3. The prescribed decompression stop depths are, in sequence, 2m / 4m / 6m /
9m… (7ft / 13ft / 20ft / 30ft…).
If atmospheric pressure is below 620mbar (8.99psi) (altitude higher than 4100m /
13450ft above sea level), Subgear XP-3G switches automatically to gauge mode and no
decompression data is calculated and displayed.
In addition, the dive planner is not available anymore.