Dive Computer
User Manual
Liquivision Products, Inc
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25
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Revision 3.2 Software 2.58
Ex: “Multi-Level” Profile
You already have a waypoint set up at 20m for 20 mins breathing 32% nitrox. Instead of selecting
“Compute Deco”, you “Add” a waypoint at 30m for an additional 10 mins. Then select “Compute
Deco”. Your XEO suggests a switch to O2 at 7m and a total dive time of 32:59.
If you plan to dive a multi-level dive with different mixes for each level, you will need to set a
“Switch” waypoint to tell your XEO to plan a gas switch. Let’s say that after 20m for 20 mins
breathing 32% nitrox, you would like to spend 10 minutes at 40m (ca. 130 ft) and would like to breathe
Air there. Then you would set up two “Normal” waypoints, and add a “Switch” waypoint:
As you can see, in this last example, your XEO provides a dive plan where you breathe 32% during
your dive leg at 20m, then descent to 40m and switch to Air. Once you begin your ascent, it
recommends that you switch to 32% nitrox at 35m and then to O2 at 7m. Your total dive time is 34:18.
A few things to keep in mind…
Your XEO assumes your first waypoint is depth “0” and time “0”.
When preparing your dive plan, your XEO uses the ascent/descent rates configured in the
Ascent
Rate
/
Descent Rate
submenu of the
Alarms
menu. For example, if your first waypoint is 20 minutes at
30m (ca. 100ft), and your Descent Rate Alarm is set to the default of 30 mpm, then your XEO will
assume you spend the first minute of your dive traveling to your target depth, and only spend 19
minutes at the target depth.
If you have recently been diving, and are still saturated from those dives, there will be an additional
item in the Runtime submenu, which is “Remain. SI”, or “Remaining Surface Interval”. Here you can
configure the number of hours and minutes that you plan to stay at the surface, before going on the dive
that you are planning.
Keep in mind that the gas or setpoint switches configured in this submenu have little to do with XEO
gas or setpoint switch suggestions (or automatic switches, if your Auto Switch feature is On). The latter
are based on the Best Gas concept (see
Gas settings
), or the pre-programmed On Descent and On
Ascent values (see
Dive Setup settings
above).
