Safety Stops And Deepstops - Suunto DX User Manual

3.19 Safety stops and deepstops

Safety stops are widely considered good diving practice and are a
critical part of most dive tables. The reasons for performing a safety
stop include: reducing sub-clinical DCI, microbubble reduction,
ascent control, and orientation before surfacing.
Suunto DX displays two different types of safety stops:
recommended and mandatory.
With every dive over 10 meters (30 feet), there is a three-minute
countdown for the recommended safety stop. This stop is taken in
the 3-6 m (10-20 ft) range. Suunto DX shows a STOP icon and a
three-minute countdown.
NOTE: When deepstops are enabled, the length of mandatory
safety stops is indicated in seconds.
When the ascent rate exceeds 10 m (33 ft) per minute for more than
five consecutive seconds, the microbubble build-up may be more
than is allowed for in the decompression model.
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