SUUNTO D4 - Manual (Page 42)

When programming the instrument for the correct altitude, you need to select the
correct Altitude Adjustment settings according to Table 5.5, Altitude Adjustment settings.
The dive computer will adjust its mathematical model according to the entered altitude
setting, giving shorter no-decompression times at higher altitudes (see Table 10.1,
No-decompression time limits for various depths (m) and Table 10.2, No-decompression
time limits for various depths (ft) in Section 10.2. RGBM).
Table 5.5. Altitude Adjustment settings
Altitude range Alt. adjustment value
0 - 300 m / 0 - 1000 ft A0
300 - 1500 m / 1000 - 5000 ft A1
1500 - 3000 m / 5000 - 10 000 ft A2
NOTE Section 5.8.5. Setting the personal/altitude adjustments describes
how the Altitude value is set.
WARNING Traveling to a higher elevation can temporarily cause a change
in the equilibrium of dissolved nitrogen in the body. It is recom-
mended that you acclimatize to the new altitude by waiting at
least three hours before diving.
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