SUUNTO Vyper - Manual (Page 57)

Figure 6.3. Diving display. An annotation, Bookmark, is done in the profile memory
during a dive by pressing the PLAN button. Note the Logbook symbol.
6.1.3. Consumed Bottom Time (CBT)
The available no-decompression time is also shown visually in the multi-function bar
graph on the left side of the display. When your available no-decompression time de-
creases below 200 minutes, the first (lowest) bar graph segment appears. As your
body absorbs more nitrogen, more segments start to appear.
Green Zone– As a safety precaution Suunto recommends you should maintain the
no-decompression bar graph within the green zone. Segments start to appear when
the available no-decompression time decreases below 100, 80, 60, 50, 40, 30, and
20 minutes.
Yellow Zone– As the bars reach the yellow zone, your no-decompression stop time
is less than 10 or 5 minutes and you are getting very close to no-decompression limits.
At this point, you should start your ascent towards the surface.
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