SUUNTO Vyper Air - Manual (Page 52)

5.8. Activation and pre-checks
This section describes how to activate the DIVE mode and explains the pre-checks
that it is highly recommended you perform before you get into the water.
5.8.1. Accessing DIVE mode
The Suunto Vyper Air has three diving modes: AIR mode for diving with standard air
only, NITROX mode for diving with oxygen enriched mixtures, and GAUGE mode for
use as a bottom timer and for freediving.
The OFF mode disables the DIVE mode, and allows the TIME mode to be used un-
derwater. 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.
5.8.2. 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 altitude and personal adjustment settings, battery condition, oxygen settings,
and so on.
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