Dive Computer
User Manual
Liquivision Products, Inc
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Revision 3.2 Software 2.58
If you follow a different schedule – e.g., you spend all your bottom phase on the “Low” setpoint – you
should turn Auto Switch “Off”.
Even when you turn your Auto Switch “Off”, you should make sure to configure your “On Descent”
and “On Ascent” depths. Here is how they will affect ascent schedule:
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When the ascent schedule calculation starts, it considers your current setpoint, whatever it is.
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If your depth is at least the “On Descent” or deeper, the setpoint used to calculate your schedule
will be High. This means that, if you are using the “Low” setpoint during your bottom phase,
your XEO assumes that after you start your ascent, you will manually switch to High.
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When your depth on the schedule becomes equal or less than the “On Ascent” value, the
setpoint on your schedule will be changed to Low.
If you choose your Auto Switch to be “On”, it will switch your setpoint to:
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“High” if your current setpoint is Low (but not any custom setpoint), and the depth you are at is
more than or equal to the “On Descent” depth.
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Low if your current setpoint is High (again, not any custom setpoint), and the depth you are at is
less than or equal to the “On Ascent” depth.
In the
Gas settings
Gases
submenu, you can configure up to 10 different gases to be used
during your dives. For each of these gases, you can specify the following:
oxygen content, helium content, as well as a “Mode”. The “Mode” setting
defines how you plan to use this gas during the dive. Available modes are:
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Dive
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Deco
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Backup
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Off
Setting a gas to “Off” means that you do not plan to use this gas at all during your current dive, but it
gives you the option to easily turn it “On” in the future. The other gas modes are described below,
together with few other labels XEO uses with respect to gases:
Best Gas
– your XEO uses a “Best Gas” concept to determine the gas you ought to be breathing at a
specific depth, both during Dive Planning and during Auto Switching while diving. To determine the
“Best Gas”, your XEO first reviews all the “Dive” and “Deco” gases you have set up for this dive (with
the exception of any “Lost” gases). Then it chooses a subset of gases that are breathable at this depth –
based on your min / max PO2 / END settings. Finally, it chooses one that has the highest content of
oxygen among those gases – that is your “Best Gas”.
Default Gas
– the gas you set as “Default” is the gas your XEO will assume you are breathing the
moment you begin the dive. You can later switch to other gases during your dive.
Default Gas Rules:
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Only one gas can be configured as the “Default Gas”
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There always has to be a “Default Gas”
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The “Default Gas” will always be a Dive Gas
