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A SAFETY stop is generated as soon as the
depth of the dive exceeds 10m / 33ft. It has
a duration of 3minutes and it is carried
out between depths of 6m / 20ft and 3m /
10ft at the end of a dive prior to surfacing.
Such stop is NOT mandatory but HIGHLY
RECOMMENDED. A safety stop is always
shown as a 3-minute countdown in minutes
and seconds.
WARNING
During all dives, perform a safety stop
between 3 and 5 meters/10 and 15 feet for
3minutes, even if no decompression stop
is required.
3.3.1.3. FUTURE DECOMPRESSION
In case of a decompression dive, the
sequence also features ASC+5. The value
shown represents the total ascent time if
you were to remain at the current depth for
an additional 5 minutes. This is very useful
since it allows you to estimate how your
decompression will be affected by remaining at
the current depth a while longer.
It is also very useful because, as the slower
tissues start accumulating nitrogen, you
could find yourself in a situation in which
the decompression time grows very quickly,
so much so that you may find yourself with
insufficient gas to finish the dive.
NOTE
Associated to a large difference between
the current ASC and the ASC+5 value, Icon
will alert you with the RUNAWAY DECO
warning: since the ASC+5 calculation runs
in the background and is permanently
updated, Icon HD monitors this value and,
if it is calculated to be greater than 10
minutes beyond the current ASC, Icon HD
will trigger the alarm RUNAWAY DECO.
This remains on the display until you press
any button to acknowledge having seen it.
NOTE
The prediction of ASC can be set between
3 and 10 minutes in advance via the ASC+X
menu within FUTURE DECO in SET DIVE.
The value of X can be set between 3 and 10
minutes.
Likewise, the trigger point of the
RUNAWAY DECO alarm can be set between
2 and 4 times the value of X. As an
example, if you set the prediction of ASC
to a value of +6 and the RUNAWAY DECO
to a value of 3, the alarm will be triggered
when the difference between the current
ASC and the predicted one 6 minutes later
is 6*3=18 minutes or greater.
3.3.2. DIVE PROFILE
During the dive you can view the depth profile
performed so far by clicking on . The profile
is updated every 20 seconds. The top row now
shows current depth and no deco time (or total
ascent time in case of decompression dives) so
that you can keep the profile on the display and
still have all the major information about the
dive.
With the button you can call up one
additional piece of information but, unlike in
the standard display, you can also remove it (by
clicking through the whole sequence) in case it
overlaps with the dive profile.
NOTE
The display remains in dive profile mode
until you press or until an alarm is
triggered, in which case the display reverts
to the standard display.
3.3.3. COMPASS
During the dive you can access the compass
by pressing . In COMPASS mode, the top
row of the display shows current depth and no
deco time (or total ascent time in the case of
decompression dives), so that you can keep the
compass on the display and still have all the
major information about the dive.
With , you can set a reference bearing. A
dot will appear to indicate the set bearing.
Additional symbols will appear as well:
squares at 90 degrees, triangles at 120
degrees and two parallel lines at 180 degrees,
as an aid in navigation for square, triangular
and reciprocal courses. The number at
the bottom represents the deviation of the
direction you are pointing at with reference to
the set bearing. If you press again, the new
bearing will override the one in memory. If you
press and hold you erase the bearing.
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