Suunto Vyper User Manual download pdf (Page 32)

By pressing the TIME button during a nitrox dive,

the alternate display appears, which includes (Fig.

3.24):

• the current time

• Consumed Bottom Time

• maximum depth (during decompression

display)

After ﬁ ve seconds the display will automatically

revert to the original display.

3.3.3. Oxygen Limit Fraction,

OLF

In addition to tracking diver’s exposure to nitrogen,

the instrument tracks the exposure to oxygen, if set

to NITROX Mode. These calculations are treated as

entirely separate functions.

The Oxygen Limit Fraction (OLF) is a combination

of two methods tracking the oxygen toxicity: the

Central Nervous System Toxicity (CNS) and Oxygen

Tolerance Unit (OTU). Both fractions are scaled so

that the maximum exposure is expressed as 100%.

Each of the 11 segments represents 10%. The frac-

tion closest to the maximum limit is displayed. When

OTU% reaches the CNS% limit the lowest segment

starts to blink (Fig. 3.25). The OLF is calculated

based on the factors listed in chapter 6.1. “Operating

Principles”.

Fig. 3.25 The lowest bar

graph blinks to indicate

that the OLF value shown

relates to OTU.

Fig. 3.24 Alternative display.

Pressing the TIME button dis-

plays the current time, maximum

depth and CBT.

TIME

O2%

NO DEC TIME

TIME

MAX

NO DEC TIME

MAX

DIVE TIME

O2%

OLF

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 85 86

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Suunto Vyper User Manual Page 32

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