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Dive Modes
The Descent device supports six dive modes. Each dive mode has four phases: dive pre-check, surface display,
in-dive, and post-dive. During the pre-dive check, you can confirm the dive settings before you start diving (Dive
Setup, page 8). The surface phase shows the data screens for the dive mode (Dive Data Screens, page 10).
The in-dive phase shows data about the dive in progress, and other watch features, such as GPS, are disabled
(Going Diving, page 16). During the post-dive review, you can view a summary of the completed dive (Viewing
the Dive Log Widget, page 21).
Single-Gas: This mode allows you to dive with a single gas blend. You can set up to 11 additional gases as
backup gases.
Multi-Gas: This mode allows you to configure multiple gas blends and switch gases during your dive. You can
set the oxygen content from 5–100%. This mode supports one bottom gas, and up to 11 additional gases as
decompression or backup gases.
NOTE: Backup gases are not used in no-decompression limit (NDL) and time to surface (TTS)
decompression calculations until you activate them during a dive.
CCR: This mode for closed-circuit rebreather (CCR) diving allows you to configure two partial pressure of
oxygen (PO2) setpoints, closed-circuit (CC) diluent gases, and open-circuit (OC) decompression and backup
gases.
Gauge: This mode allows you to dive with basic bottom timer features.
NOTE: After diving in gauge mode, the device can only be used in gauge or apnea mode for 24 hours.
Apnea: This mode allows you to free dive with apnea-specific dive data. This mode has a higher data refresh
rate.
Apnea Hunt: This mode is similar to the Apnea dive mode, but tuned specifically for spearfishers. This mode
disables start and stop tones.
Using the Pool Dive Mode
When the device is in pool dive mode, the tissue load and decompression lockout features function normally,
but dives are not saved to the dive log.
1 Hold LIGHT to view the controls menu.
2 Select .
The pool dive mode turns off automatically at midnight.
Diving 7
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