SUUNTO Stinger - Manual (Page 60)

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3.3. FREE / GAUGE MODE
3.3.1. BEFORE DIVING IN THE FREE/GAUGE MODE
If set to Free/Gauge mode, the dive computer can be used for freediving or diving
with technical diving mixed gases. If you are trained for free or technical diving and
you plan to use Free/Gauge mode on a regular basis, it may be preferable to disable
the Air/EAN mode to set the instrument permanently to its Free/Gauge mode (see
chapter 4.3.).
The default sampling interval for the logbook profile memory in the Free/Gauge
mode is 4 seconds, but it can be set to 2, 10, 20, 30 or 60 seconds. This can be done
in the Free setting mode (see chapter 4.4). It is advisable to use the short sampling
rates for freediving but the longer ones (10 to 60s) for Scuba diving. Shorter intervals
enable more accurate stored dive profiles. If your sampling rate is less than 10 seconds,
your maximum dive time is 200 minutes.
The Dive Time display in the center window can be changed during a dive to become
a stopwatch. When this stopwatch option is used the center display cannot be reset to
Dive Time during the current dive. Using the stopwatch function has no effect on
another Dive Time setting which can be preset or called up in the user definable
display.