Suunto Cobra User Manual page 29

DISPLAY ABOVE THE FLOOR
When you ascend above the fl oor, the ASC TIME display
stops blinking and the upward pointing arrow disappears
(Fig. 3.17.). Decompression will now begin, but is very
slow. You should therefore continue your ascent.
DISPLAY AT THE CEILING ZONE
When you reach the ceiling zone, the display will show
you two arrows pointing at each other (the "hour glass"
icon, Fig 3.18.). Do not ascend above this zone.
During the decompression stop, ASC TIME will count
down towards zero. When the ceiling moves upwards,
you can ascend to the new ceiling. You may surface
only after the ASC TIME and CEILING labels have
disappeared, which means that the decompression stop
and any Mandatory Safety Stop has been completed. You
are advised, however, to stay until the STOP sign has also
gone. This indicates that the three minute Recommended
Safety Stop has also been completed.
DISPLAY ABOVE THE CEILING
If you ascend above the ceiling during a decompression
stop, a downward pointing arrow will appear and a
continuous beeping starts (Fig. 3.19.). In addition, an
error warning Er reminds you that you have only three
minutes to correct the situation. You must immediately
descend to or below the ceiling.
If you continue to violate the decompression, the dive
computer goes into a permanent Error Mode. In this
mode the instrument can only be used as a depth gauge
and timer. You must not dive again for at least 48 hours
(see also section 3.9. "Error Conditions").
m
CEILING
STOP ASC TIME
AIR TIME
C
B
T bar
DIVE TIME
Fig. 3.19. Decompression dive,
above ceiling. Note downward
pointing arrow, Er warning and
an audible alarm. You should
immediately (within 3 minutes)
descend to or below ceiling.
CEILING
3m / 10ft
6m / 18ft
FLOOR
Fig. 3.20. Ceiling and Floor
zone. Recommended and
Mandatory Safety Stop zone
between 6 m and 3 m [20 ft and
10 ft].
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