Single-Gas, Multi-Gas, And Ccr Data Screens - Garmin DESCENT MK1 Owner's Manual

Single-Gas, Multi-Gas, and CCR Data Screens

Primary data screen: Displays the main dive data, including your breathing gas and rate of ascent or decent.
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 descent or ascent.
Green: Good. Ascent is less than 7.9 m (26 ft.) per min.
Yellow: Moderately high. Ascent is between 7.9 and 10.1 m (26 and 33 ft.) per min.
Red: Too high. Ascent is greater than 10.1 m (33 ft.) per min.
Your partial pressure of oxygen (PO2) level.
During a CCR dive, indicates whether closed-circuit (CC) or open-circuit (OC) diving is active.
Dive compass: Allows you to view the compass and set a directional heading to aid with underwater navigation
(Navigating with the Dive Compass, page
Secondary data screen: Displays additional dive data and physiological information, including the time of day
and battery level.
Your current heart rate zone
NOTE: You can view only wrist heart rate monitor data during a dive.
Gray: Zone 1.
10
14).
(About Heart Rate Zones, page 50).
Diving