Setting CCR Setpoints

You can configure the high and low partial pressure of oxygen (PO2) setpoints for closed-circuit rebreather (CCR) dives.

1. Select Dive Setup > CCR Setpoints.
2. Select an option:
   • To configure the lower PO2 setpoint, select Low Setpoint.
   • To configure the upper PO2 setpoint, select High Setpoint.
3. Select Mode.
4. Select an option:
   • To automatically change the setpoint based on your current depth, select Auto.

   NOTE: For example, if you descend through the high setpoint depth or ascend through the low setpointdepth, the PO2 threshold switches to the high or low setpoint, respectively. Automatic setpoint depthsmust be at least 6.1 m (20 ft.) apart.

   • To manually change setpoints during a dive, select Manual.

   NOTE: If you manually change setpoints within 1.8 m (6 ft.) of an automatic switch depth, then automaticsetpoint switching is disabled until you are more than 1.8 m (6 ft.) above or below the automatic switchdepth. This prevents unintended setpoint switching.

5. Select PO2, and enter a value.
6. If necessary, select Depth, and enter a depth value for the automatic setpoint change.