SUUNTO Cobra3 - Manual (Page 29)

Low Air Pressure Warnings
The dive computer will warn you with three audible double beeps and a blinking pressure
display when the cylinder pressure reaches 50 bar/725 psi.
Three double beeps are also heard when the cylinder pressure goes down to the
user-selected alarm pressure and when the remaining air time reaches zero.
6.1.4. Ascent rate indicator
The ascent rate is shown graphically along the right hand side. When the maximum allowed
ascent rate is exceeded, the lower segments start to blink with the top segment staying
solid, indicating that the maximum ascent rate has been exceeded continuously or that
the current ascent rate is significantly above the allowed rate.
NORMAL
ASCENT
RATE.
ACTIVATED BACKLIGHT,
ALARM AND A BLINKING ASCENT
RATE BAR GRAPH INDICATE YOU
ARE ASCENDING FASTER THAN 10
M/MIN. YOU ARE ADVISED TO
MAKE A MANDATORY SAFETY
STOP WHEN YOU REACH A
DEPTH OF 6 M.
WARNING DO NOT EXCEED THE MAXIMUM ASCENT RATE! Rapid ascents
increase the risk of injury. You should always make the Mandatory
and Recommended Safety Stops after you have exceeded the
maximum recommended ascent rate. If this Mandatory Safety Stop
is not completed, the decompression model will penalize your next
dive(s). Continuous ascent rate violations will result in Mandatory
Safety Stops. When Recommended Deep Stop is enabled, the length
is indicated in seconds.
6.1.5. Safety Stops
A 3 minute Recommended Safety Stop is prompted after every dive to over 10m.
6.1.6. Decompression dives
When your NO DEC TIME becomes zero, your dive becomes a decompression dive so
you must perform one or more decompression stops on your way to the surface. The NO
DEC TIME on your display will be replaced by an ASC TIME, and a CEILING notation will
appear. An upward pointing arrow will also prompt you to start your ascent.
If you exceed the no-decompression limits on a dive, the dive computer will provide the
decompression information required for ascent. After this, the instrument will continue to
provide subsequent interval and repetitive dive information.
Rather than requiring you to make stops at fixed depths, the dive computer lets you
decompress within a range of depths (continuous decompression).
The ascent time (ASC TIME) is the minimum amount of time needed to reach the surface
in a decompression dive. It includes:
•
the time needed to ascend to the ceiling at an ascent rate of 10 m/33 ft per minute.
The ceiling is the shallowest depth to which you should ascend
• the time needed at the ceiling
• the time needed at the Mandatory Safety Stop (if any)
• the time needed to reach the surface after the mandatory decompression dives have
been completed
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