DESCENT MK3 SERIES Owner’s Manual

Single-Gas and Multi-Gas Data Screens

The primary data screen for single-gas and multi-gas dive modes displays the main dive data, including your breathing gas and rate of ascent or descent. You can press DOWN to scroll through additional data, including time of day and heart rate, and view the dive compass (Navigating with the Dive Compass).

NOTE: The single-gas dive mode has Big Numbers mode enabled by default (Big Numbers Mode).

    

Your partial pressure of oxygen (PO2) level.

Your nitrogen (N2) and helium (He) tissue load level.

Green: 0 to 79% tissue load.

Yellow: 80 to 99% tissue load.

Red: 100% or greater tissue load.

Your rate of ascent.

Green: Good. Ascent is less than 7.9 m (26 ft.) per minute.
Yellow: Moderately high. Ascent is between 7.9 and 10.1 m (26 and 33 ft.) per minute.
Red: Too high. Ascent is greater than 10.1 m (33 ft.) per minute.