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Alarm reasonAlarm indication
The selected depth (3 - 120 m / 10 - 394 ft)
is exceeded.
Three beeps with a one second interval for
24 seconds. Maximum depth blinks.
The fixed maximum depth (120 m / 394 ft)
is exceeded.
The selected dive time (1 - 999 min) is ex-
ceeded.
Three beeps with a one second interval for
24 seconds. Dive time blinks.
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 in-
crease the risk of oxygen toxicity, injury, or death.
5.7. 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.
Out of calculation limits
Suunto uses state of the art memory and microprocessors, however, there are limitations
to the memory capacity of decompression calculations. Therefore Suunto must limit the
maximum saturation of tissues on Suunto HelO
2
and limit the maximum bottom times on
dives performed usingthe dive computer. The bottom timesinclude decompression calcu-
lation. While it is highly unlikely that the following bottom times are confronted by open-
circuit divers, it is important to warn you of their possibility.
The same limits areused in the Suunto DivePlanner and so repetitive dives willbe checked
while planning a dive because a dive plan must be created in any case.
Table 5.2. Possible decompression dive times
First deep-
stop
CeilingBottom timeDepthO
2%/He%
Gas mix
46 m33 m250 min60 m20/35Tx
65 m50 m260 min80 m15/50Tx
80 m61 m120 min100 m12/60Tx
96 m73 m90 min120 m10/60Tx
Descent at the rate of 10 m/min is included in the time. The times allow for a safe ascent
using the bottom gas all the way to the surface without exceeding tissue pressures.
If a diver violates these limits, the dive computer goes to an error mode and the rest of
the dive must be conducted using the diveplan on the slate.
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