Dive Alerts - Garmin DESCENT MK1 Owner's Manual

Dive Alerts

Alert Message
None
None
%1 OTU accumulated. End
your dive now.
250 OTU accumulated.
Approaching Deco Stop
Approaching NDL
Ascending too fast. Slow
your ascent.
Battery critically low. End
your dive now.
Battery is low.
CNS toxicity at %1%. End
your dive now.
CNS toxicity at 80%.
Decompression Cleared
Descend below deco
ceiling.
Descend to complete
safety stop.
Do not dive. Failed to read
depth sensor.
20
Cause
You completed the decompression stop.
Your partial pressure of oxygen (PO2)
value is above the specified warning
value.
Your oxygen toxicity units are above the
safe limit. During a dive, "%1" is replaced
with the number of units accumulated.
Your oxygen toxicity units (OTU) are at
250 units, and you are nearing the safe
limit of 300 units.
You are within one stop interval (3 m or
9.8 ft.) of the decompression stop depth.
You are at 80% of your tissue load.
You are ascending faster than 9.1 m/
min. (30 ft./min.) for more than 5
seconds.
Less than 10% battery power remains.
Less than 20% battery power remains.
Your CNS oxygen toxicity is too high.
During a dive, "%1" is replaced with your
current CNS percentage.
Your central nervous system (CNS)
oxygen toxicity is at 80% of the safe
limit.
You completed all decompression stops. None
You are more than 0.6 m (2 ft.) above the
decompression ceiling.
You are more than 2 m (8 ft.) above the
safety stop ceiling.
The device has invalid or missing depth
sensor data before you start a dive
activity.
Device Action
The decompression stop depth and
time flash blue for five seconds.
Your PO2 value flashes yellow.
The alert appears every two minutes,
up to three times.
None
None
None
None
The alert appears when the device is
below 10% battery power and on the
dive pre-check screen for your next
dive.
The alert appears when the device is
below 20% battery power and on the
dive pre-check screen for your next
dive.
The alert appears every two minutes,
up to three times.
The alert appears during a dive and on
the dive pre-check screen for your next
dive.
The current depth and stop depth flash
red.
If you remain above the decompres­
sion ceiling for more than three
minutes, the decompression lockout
feature goes into effect.
The current depth and stop depth flash
yellow.
Do not start a dive. Call Garmin
Product Support.
Diving