Diving In Bottom Timer Mode; Entering The Water - DEEPBLU COSMIQ+ User Manual

Central Nervous System (CNS) oxygen toxicity danger
If your COSMIQ calculates a CNS oxygen toxicity level of 80%, the letters CNS will
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flash on the screen along with an arrow indicator instructing you to ascend to a
shallower depth. The alarm will increase in frequency if you fail to do so and as the
toxicity level reaches 85%. In case of a CNS alarm, conduct a safety stop and end the
dive immediately.
Maximum Operating Depth (MOD) exceeded
If you have exceeded your MOD during a dive, your COSMIQ
the letters PO2 will flash on screen along with an arrow indicator instructing you to
ascend to a shallower depth. The alarm will continue to sound until you ascend above
the MOD. In case of an MOD alarm, ascend to a shallower depth and consider ending
the dive.
Safe ascent rate exceeded
Your COSMIQ considers an ascent rate slower than 12 m (40 ft) per minute to be
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safe. If you exceed this rate, the alarm will sound until you slow your ascent. The
ascent rate bar operates according to the table below.
Bar Indicator
No bars
1 bar
2 bars
3 bars
4 bars
5 bars

5.3 Diving in Bottom Timer Mode

No decompression calculations are done in Bottom Timer Mode; only depth, time
and temperature are measured. Use this mode when you use your COSMIQ
secondary dive computer or as a depth gauge and timer only.

5.3.1 Entering the water

Just like diving in Scuba Mode, there are two ways to start a dive in Bottom Timer
Dive Computer
COSMIQ
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Ascent Rate
Slower than 4 m (13 ft) per minute
4–6 m (13–20 ft) per minute
6–8 m (20–26 ft) per minute
8–10 m (26–33 ft) per minute
10–12 m (33–40 ft) per minute
Faster than 12 m (40 ft) per minute
will sound an alarm and
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