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User documentation - describe the dive profile

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Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Miika Turkia 2013-02-25 16:18:53 +02:00 • committed by Dirk Hohndel
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Documentation/user-manual.txt
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@ -70,6 +70,56 @@ The screen is divided in 3 area's (shown below with test dives loaded):
image::images/main_window.png["The Main Window",align="center"]
[[S_DiveProfile]]
Dive Profile and Included information
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The dive profile show on main screen is loaded with information.
However, a great effort is given to keep the profile simple, yet
informative.
The main information of the dive profile is the depth graph. On top of
the obvious information of the depth it shows also the ascent and
descent rate compared to average (or recommendation). This information
is given using different colors. Dark red means the ascent or descent
rate is faster than average, dark green means slower than average and
yellow / light green is close to average. The depth graph includes also
depth readings for the peaks in the graph. Thus you should see the
depth of the deepest point and other peaks. Average depth is marked with
a horizontal red line.
The air consumption graph displays the tank pressure and its change
during the dive. The air consumption takes depth into account so that
even when manually entering the start and end pressures the graph is not
a straight line. Similarly to the depth graph the tank pressure
gives you information of the SAC rate when using air integrated dive
computer. Same color coding is used with dark red being faster and dark
green slower air consumption than average.
Water temperature is displayed with its own blue line with degree
markings placed adjacent to significant changes.
It is also possible to zoom in the profile graph. This is done by the
left mouse button and zoom area can be changed by moving the mouse while
the button is pressed down. There is also a toggle zoom under the 'Log'
menu that changes the scale of the dive to fill the whole area, useful
especially for free divers.
[[S_TecDiveProfile]]
Tec Information in Dive Profile
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The dive profile can include Tec settings. Enabling these is described
in chapter <<S_SettingUpPreferences,Setting up Preferences>>. Basically
you can include graphs of accumulated pO2, pN2, pHe. These graphs are
added below the profile data. On top of the profile the currently used
gradient factors are shown (e.g. GF 35/75).
The graph can also include both the dive computer reported ceiling and
our calculated ceiling. Because of the differences in used algorithms it
is unlikely that both of these are the same. It is even quite common
that Subsurface calculates ceiling for non-decompression dives when the
dive computer was not in deco mode during the dive.
[[S_ImportNewDives]]
Import New Dives from your Dive Computer