CCR Data Screens
- Primary data screen
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Displays the main dive data, including your breathing gas and rate of ascent or decent.
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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
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Allows you to view the compass and set a directional heading to aid with underwater navigation (Navigating with the Dive Compass).
- Customizable data screen
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Displays additional dive data and physiological information, including the time of day and battery level. You can edit the gauges and the first five data fields (Customizing the Data Screens).
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The time to surface (TTS) decompression calculation.
Your central nervous system (CNS) oxygen toxicity level.
Green: 0 to 79% CNS oxygen toxicity.
Yellow: 80 to 99% CNS oxygen toxicity.
Red: 100% or greater CNS oxygen toxicity.
Your current oxygen toxicity units (OTU).
Green: 0 to 249 OTU.
Yellow: 250 to 299 OTU.
Red: 300 or greater OTU.
- Transmitters data screen
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Displays information about paired Descent™ T1 transmitters (Viewing Transceiver Data During a Dive).