SUUNTO COBRA User Guide - Manual (Page 57)

Figure 6.4. Bookmark activation. An annotation, Bookmark, is placed in the profile
memory during a dive by pressing PLAN button. Note Logbook symbol.
6.1.3. Cylinder pressure data
The pressure of your scuba cylinder in bars (or psi) is shown digitally in the lower left
corner of the alternative display. Whenever you start a dive, the remaining air time
calculation begins. After 30–60 seconds (sometimes more, depending on your air
consumption), the first estimation of remaining air time will be shown in the left center
window of the display. The calculation is always based on the actual pressure drop
in your cylinder and will automatically adapt to your cylinder size and current air con-
sumption.
The change in your air consumption is based on constant one second interval pressure
measurements over 30–60 second periods. An increase in air consumption influences
the remaining air time rapidly, while a drop in air consumption increases the air time
slowly. In this way, an over optimistic air time estimation, caused by a temporary drop
in air consumption, is avoided.
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