SUUNTO D9 - Manual (Page 36)

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5. BEFORE DIVING
5.1. ACTIVATION AND PRECHECKS
The Suunto D9 has three diving modes: Air mode (Fig 5.1a)
for diving with standard air only, Nitrox mode (Fig 5.1b) for
diving with oxygen enriched mixtures and Gauge mode (Fig
5.1c) for use as bottomtimer and for freediving. The Off mode
(Fig 5.1d) disables the dive mode, and allows the watch mode
to be used underwater. The chosen dive mode is displayed
when the DIVE mode is accessed.
5.1.1. DIVE MODE ACTIVATION
The dive computer will activate if submerged deeper than 0.5
m (1.5 ft). However, it is necessary to activate the Dive Mo-
de before diving to check the cylinder pressure, altitude and
personal adjustment settings, battery condition, oxygen set-
tings etc. Press the Mode button to switch to the default DI-
VE mode. To change the DIVE mode press Up or Down but-
ton. The chosen dive mode is activated after a few seconds,
or by pressing Select.
After activation all display elements will turn on showing most-
ly fi gure 8’s and graphical elements, and the backlight and the
buzzer are activated (Fig. 5.2.). After this the selected altitude
Fig. 5.1 Dive Modes
c) Gauge Mode
b) Nitrox Mode
a) Air mode