SUUNTO D6 - Manual (Page 65)

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 have been completed. You are
advised, however, to stay until the STOP sign has also disappeared. 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.
DECOMPRESSION DIVE, ABOVE CEILING.
NOTE DOWNWARD POINTING ARROW, ER WARNING
AND ALARM. YOU SHOULD IMMEDIATLY (WITHIN
3 MINUTES) DESCEND TO OR BELOW CEILING.
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 will go 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 Section 5.7. Error conditions).
6.2. Diving in NITROX mode (DIVEean)
NITROX mode (DIVEean) is the second dive mode available in Suunto D6 and is used
when using oxygen- enriched gas mixtures.
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