SUUNTO HELO2 - Manual (Page 42)

5.8.1. Setting the gases
If set to the MIXED GAS mode, the correct oxygen and helium percentages of the gas
in your cylinders (and additional gases) must always be entered into the dive computer
to ensure correct tissue and oxygen calculation. In addition, the oxygen partial pressure
limit must be set. You can either modify the dive plan with the Suunto Dive Planner
or enter the correct values directly into the dive computer after analyzing the gas mixes
in your cylinders.
ADJUST WITH
UP AND DOWN
BUTTONS.
ACCEPT WITH
SELECT BUTTON.
ADJUST WITH
UP AND DOWN
BUTTONS.
ACCEPT WITH
SELECT BUTTON.
When in the MIXED GAS setting mode, the equivalent maximum operating depth,
based on the chosen setting, is also be displayed.
After entering values for Mix1, you can set additional mixes, Mix2–Mix8, similarly. You
can set them to "PRIMARY", "SECONDARY" or "OFF". Mix1 is always set as a primary
gas.
In order to minimize the risk of error during a dive, it is highly recommended that the
mixes are set in the proper order. This means that as the mix number rises, so does
oxygen content, and this is the order they are usually used during the dive. Before a
dive, only enable the mixes you actually have available and remember to check the
set values to ensure they are correct.
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