Setting a Custom Dive Alert
1 Hold MENU.
2 Select Dive Setup.
3 Select an option:
• Select Scuba Alerts.
• Select Apnea Alerts.
4 Select an option:
• Select Add Alert to add a new alert.
• Select the alert name to edit an existing alert.
5 If necessary, enable the alert.
6 Select an option:
NOTE: Not all options are available for all alert types.
• Select Depth to specify the depth that should trigger the alert.
• Select Time to specify the time interval that should trigger the alert.
• Select Speed to specify the vertical speed threshold that should trigger the alert.
NOTE: You can set the alert to trigger when your vertical speed exceeds or drops below the selected
speed.
• Select Interval to specify if the alert should trigger once or at a repeat interval.
• Select Direction to specify if the alert should be enabled for ascending, descending, or both.
• Select Dive Types to specify which dive modes should allow the alert to trigger.
• Select Sound and Vibe to set the alert tone, vibration, or neither.
• Select Pop-up to enable a pop-up notification for the alert.
• Select Preview Alert to see how the alert appears and sounds during a dive.
Setting PO2 Thresholds
You can configure the partial pressure of oxygen (PO2) alert message thresholds, in bar.
1 Hold MENU.
2 Select Dive Setup > PO2.
3 Select an option:
• Select MOD/Deco PO2 to set the maximum operating depth (MOD) and decompression PO2 threshold for
your planned bottom gas before you should begin your ascent and switch to the decompression gas with
the highest percentage of oxygen.
NOTE: The watch does not switch gases for you automatically. You must select the gas.
• Select PO2 Warning to set the threshold for the highest oxygen concentration level that you are
comfortable reaching.
• Select PO2 Critical to set the threshold for the maximum oxygen concentration level that you should
reach.
4 Enter a value.
If you reach the PO2 Critical threshold value during a dive, the watch displays an alert message (Dive Alerts,
page26).
Diving 7
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