SUUNTO Vyper Air - Manual (Page 35)

• maximum depth
• current time
• water temperature
• dive time
• tank pressure
UP BUTTON
TOGGLES
BETWEEN PO
2
,
OLF, DIVE TIME
AND WATER
TEMPERATURE.
DOWN BUTTON
TOGGLES
BETWEEN O
2
,
MAXIMUM DEPTH
TANK PRESSURE
AND CURRENT
TIME.
6.2.3. Oxygen limit fraction (OLF)
If set to NITROX mode, in addition to tracking the diver's exposure to nitrogen, the
instrument tracks the exposure to oxygen. These calculations are treated as entirely
separate functions.
The dive computer calculates separately for Central Nervous System oxygen toxicity (CNS)
and Pulmonary Oxygen toxicity, the latter measured by the addition of Oxygen Toxicity
Units (OTU). Both fractions are scaled so that the maximum tolerated exposure for each
is expressed as 100%.
The Oxygen Limit Fraction (OLF) displays only the value of the higher of the two
calculations. The oxygen toxicity calculations are based on the factors listed in Section 10.3.
Oxygen exposure .
6.2.4. Gas change and multiple breathing gas mixes
The Suunto Vyper
AIR
allows gas changes to enabled gas mixes during the dive. 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.
35