User Manual

Dive Terminology
Air time remaining (ATR): The time you may remain at the current depth until an ascent at 9 m/min. (30 ft./
min.) would result in surfacing with the reserve pressure.
Pressure-based surface air consumption (PSAC): The change in pressure over time, normalized to 1 ATM.
Respiratory minute volume (RMV): The change in gas volume at ambient pressure over time.
Volumetric surface air consumption (SAC): The change in gas volume over time, normalized to 1 ATM.
Selecting Paired Transmitters to View on Your Dive Data Screens
You can view two paired transmitters at-a-glance on the primary dive data screen. You can customize which
paired transmitters appear on the screen. By default, the first and second transmitters that you pair appear.
1 On the paired Descent dive computer, hold MENU.
2 Select Dive Setup > Air Integration > Display Setup.
3 Select a field to customize.
4 Select a paired transmitter.
Selecting the Gas Consumption Rate Metric
1 On the paired Descent dive computer, hold MENU.
2 Select Dive Setup > Air Integration > Display Setup > Gas Consumption Rate.
3 Select an option.
NOTE: The dive computer can estimate volumetric surface air consumption (SAC) or respiratory minute
volume (RMV) only if the air volume of the tank is entered in the dive computer (Transmitter Settings,
page 6). The dive computer can estimate pressure-based surface air consumption (PSAC) with or without
the air volume of the tank.
Including Transmitters in Gas Consumption Calculations
Gas consumption and air time remaining estimates are calculated using the tank pressure from the included
transmitters. By default, the first transmitter that you pair with your compatible dive computer is included. You
can include additional paired transmitters in gas consumption calculations.
1 On the paired Descent dive computer, hold MENU.
2 Select Dive Setup > Air Integration > Transmitters.
3 Select a paired transmitter.
4 Select the SAC/RMV/ATR toggle switch to include the transmitter in gas consumption calculations.
5 If necessary, repeat steps 2 through 4 to include additional paired transmitters in gas consumption
calculations.
Adding the Transmitters Data Screen to a Dive Mode
You can add the transmitters data screen to the data screen loop for a dive mode.
1 On the paired Descent dive computer, hold MENU.
2 Select Activities & Apps.
3 Select a dive mode, and select the dive mode settings.
4 Select Data Screens > Add New > Transmitters.
Diving
You can use a compatible Descent dive computer paired with your Descent T1 transmitter to start a diving
activity. See the Descent Series Owner's Manual for more information.
Diving 7