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5.9.1. Accessing DIVE mode
The Suunto D9tx has three diving modes: AIR mode for diving with standard air only,
MIXED mode for diving with oxygen enriched mixtures, and GAUGE mode for use as
a bottom timer and for freediving.
The chosen dive mode is displayed when the DIVE mode is accessed, and you can
toggle between the submodes by pressing the UP/DOWN buttons.
5.9.2. DIVE mode activation
The dive computer activates automatically when submerged deeper than 0.5 m/1.5
ft. However, it is necessary to activate the DIVE mode BEFORE diving to check
the cylinder pressure, altitude and personal adjustment settings, battery condi-
tion, oxygen settings , and so on.
After activation, all graphical display elements are turned ON, and the backlight and
the beep are activated. After this, the selected altitude and personal settings are dis-
played O2% and the PO2 values. A few seconds later the battery power indicator is
shown, as well as the maximum operating depth (MOD, 66.2 m), O2% (21%) and PO2
(1.6) value. A few seconds later the battery power indicator is shown.
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