Dive Alerts - Garmin DESCENT G1 Series 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.
Diluent PO2 is low.
Flushing may be
dangerous.
Diving
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 have 10 minutes of no decompression
limit (NDL) time remaining.
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.
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 PO2 of the diluent gas is too low, and
filling the rebreather breathing loop with the
diluent gas may be dangerous.
Watch Action
The decompression stop depth and
time flash for five seconds.
Your PO2 value flashes.
The alert appears every two
minutes, up to three times.
None
None
The alert appears again when you
have 5 minutes of NDL time
remaining.
None
The alert appears when the watch is
below 10% battery power and on the
dive pre-check screen for your next
dive.
The alert appears when the watch 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.
None
The current depth and stop depth
flash.
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.
None
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