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CCR Data Screens
Primary data screen: Displays the main dive data, including your breathing gas and rate of ascent or decent.
Indicates whether closed-circuit (CC) or open-circuit (OC) diving is active.
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 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.
Dive compass: Allows you to view the compass and set a directional heading to aid with underwater navigation
(Navigating with the Dive Compass, page 17).
12 Diving
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