Suunto None Alarm type Alarm reason, Alarm is activated, Error conditions, Omitted decompression

Alarm type			Alarm reason
Continuous beep series for 24 seconds or until any			Preset alarm time is reached.
button is pressed.
Current time blinks for one minute
Table 5.3. Oxygen alarms in NITROX mode
Alarm type			Alarm reason
Continuous beeps for 3 minutes		Set oxygen partial pressure limit is exceeded. The
and activated backlight		alternative display is replaced with a current blinking PO2
		value. You should immediately ascend above the PO2
		depth limit.
		OLF value reaches 80%. The OLF value will start to
		blink.
		OLF value reaches 100%. The OLF value will blink.
NOTE	When the backlight is turned OFF, it does not illuminate when an
	alarm is activated.

WARNING WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE MAXIMUM LIMIT IS REACHED, YOU MUST IMMEDIATELY TAKE ACTION TO REDUCE OXYGEN EXPOSURE. Failure to take action to reduce oxygen exposure after the warning is given can rapidly increase the risk of oxygen toxicity, injury, or death.

5.6. Error conditions

The dive computer has warning indicators that alert you to react to certain situations that would significantly increase the risk of DCI. If you do not respond to its warnings, the dive computer will enter an Error mode, indicating that the risk of DCI has greatly increased. If you understand the dive computer and operate it sensibly, it is very unlikely you will ever put the instrument into the Error mode.

Omitted decompression

The Error mode results from omitted decompression, i.e. when you stay above the ceiling for more than three minutes. During this three-minute period the Er warning is shown and the audible alarm beeps. After this, the dive computer will enter a permanent Error mode. The instrument will continue to function normally if you descend below the ceiling within this three-minute period.

Once in the permanent Error mode, only the Er warning is shown in the center window. The dive computer will not show times for ascent or stops. However, all the other displays will function as before to provide information for ascent. You should immediately ascend to a depth of 3 to 6 m/10 to 20 ft and remain at this depth until air supply limitations require you to surface.

After surfacing, you should not dive for a minimum of 48 hours. During the permanent Error mode, the Er text will be displayed in the center window and the planning mode will be disabled.

5.7. Air integration

The Cobra3 can be attached to the high-pressure port of the regulator, enabling you to receive cylinder pressure and remaining air time data.

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