SUUNTO Cobra3 - Manual (Page 28)

UP BUTTON TOGGLES
BETWEEN DIVE TIME AND
WATER TEMPERATURE.
6.1.2. Bookmark
It is possible to record bookmarks in the profile memory during a dive. These bookmarks
are displayed when scrolling the profile memory on the display. The bookmarks will also
be shown as annotations in the downloadable Suunto Dive Manager PC software.
The bookmark logs the depth, time, and water temperature, as well as compass heading
(if the compass has been enabled).
To make a bookmark in the profile memory during a dive, press the SELECT button. A
brief confirmation will be given.
A BOOKMARK IS PLACED
IN THE PROFILE MEMORY
DURING A DIVE BY PRESSING
THE SELECT BUTTON.
6.1.3. Tank 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 consumption.
The change in your air consumption will be based on constant one second interval pressure
measurements over 30 - 60 second periods. An increase in air consumption will influence
the remaining air time rapidly, while a drop in air consumption will increase the air time
slowly. In this way, an over optimistic air time estimation, caused by a temporary drop in
air consumption, is avoided.
The remaining air time calculation includes a 35 bar/500 psi safety reserve. This means
that when the instrument shows the air time to be zero, there is still about 35 bar/500 psi
of pressure left in your cylinder, depending on your air consumption rate. With a high
consumption rate, the limit will be closer to 50 bar/725 psi and with a low rate closer to 35
bar/500 psi.
NOTE Filling your BC affects the air time calculation due to the temporary
increase in air consumption.
NOTE A change of temperature will affect the cylinder pressure and
consequently the air time calculation.
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