SUUNTO Vyper Air - Manual (Page 25)

• the pressure transmitter is working (wireless transmitter indicator blinks, cylinder
pressure is displayed), and that there is no low battery warning displayed
• you have enough air for your planned dive.You should also check the pressure reading
against your back-up pressure gauge
And, if set to NITROX mode, make sure that:
•
the correct number of mixes is set and that the oxygen percentages are adjusted
according to the measured nitrox blends in your cylinders
• the correct oxygen percentages are adjusted according to the measured oxygen
percentages in your cylinders
• the oxygen partial pressure limits are set correctly
For more information on the NITROX mode, refer to Section 6.2. Diving in NITROX mode
(DIVEnitrox).
The dive computer is now ready for diving.
5.9.3. Battery power indication
Temperature or internal oxidation of the battery affect the battery voltage. If the instrument
is stored for a long period, or used in cold temperatures, the low battery warning may be
displayed even though the battery has enough capacity. In these cases, re-enter DIVE
mode to receive the battery power indication.
After the battery check, the Low Battery Warning is indicated by the battery symbol.
If the battery symbol is displayed in the Surface mode, or if the display is faded or weak,
the battery may be too low to operate the dive computer, and battery replacement is
recommended.
NOTE For safety reasons, the backlight cannot be activated when the low
battery warning is indicated by the battery symbol.
The optional wireless pressure transmitter sends out a lowbat (LOBT) warning when its
battery voltage is getting low. This is shown intermittently instead of the pressure reading.
When you get this warning, the pressure transmitter's battery needs to be replaced.
5.9.4. Diving at altitude
The dive computer can be adjusted both for diving at altitude and also to increase the
conservatism of the mathematical nitrogen model.
When programming the instrument for the correct altitude, you need to select the correct
Altitude Adjustment settings according to Table 5.5, Altitude Adjustment settings. The dive
computer will adjust its mathematical model according to the entered altitude setting, giving
shorter no-decompression times at higher altitudes (see Table 10.1, No-decompression
time limits for various depths (m) and Table 10.2, No-decompression time limits for various
depths (ft) in Section 10.2. RGBM).
Table 5.5. Altitude Adjustment settings
Altitude range Alt. adjustment value
0 - 300 m / 0 - 1000 ft A0
300 - 1500 m / 1000 - 5000 ft A1
1500 - 3000 m / 5000 - 10 000 ft A2
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