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The Oxygen Limit Fraction (OLF) displays only the value of the higher of the two
calculations. The oxygentoxicity calculationsare basedon thefactors listedin Section
9.3 “Oxygen exposure”.
6.2.4. Gas change and multiple breathing gas mixes
The Suunto D9allows gaschanges toenabled gasmixes during thedive. Gas changes
are made by following the procedure below:
CHANGING GAS MIX. SCROLL
THROUGH ENABLED MIXES BY
PRESSING THE UP OR DOWN
BUTTONS. SELECT NEW MIX BY
PRESSING THE SELECT BUTTON.
NOTE
Mix number, O
2
%, and PO
2
for the mixes are shown when
scrolling. If the set PO
2
limit is exceeded , it will be shown with
the PO
2
value blinking. The dive computer does not allow you to
change to a gas whose set PO
2
is exceeded. In such a case, the
mix is shown but cannot be selected.
NOTE
If no button is pressed in 15 seconds, the dive computer will go
back to the dive display without changing the gas mix. Upon
ascent, the computer prompts you to change gas when the PO
2
level you have set for the next mix allows a gas change.The
prompt is an audible 3 beeps and the current O
2
mix starts to
blink.
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