5.7.2 РО
2
Calculation
With 3 (three) Oxygen cells connected, the controller ignores the value displayed by one cell
that shows value much more different from the rest 2 (two) ones (this cell is considered as a
failed one). PO
2
is averaged from the rest 2 (two) Oxygen cells. Such an apporach is
considered as the most sustainable towards failures and errors by Oxygen cells. Values
displayed by the failed cell are in yellow on the screen. Values displayed by the rest 2 (two)
ones are in green. In case values displayed by any cell differ from the rest by more than 0.4,
CelWarning appears on the screen.
With 2 (two) Oxygen cells connected, PO
2
is averaged from these 2 (two) Oxygen cells. In
case values displayed by any cell differ from the rest by more than 0.4, CelWarning appears
on the screen. This dive mode (with 2 active cells) is less reliable than the one with 3 active
cells connected.
With 1 (one) Oxygen cell connected, no accuracy control of cell operation is carried out. This
dive mode (with 1 active cell) is the least reliable one.
All decompression calculations are made based on the actual PO
2
measured by Oxygen
cells.
5.7.3 Alarm Warnings
AV1 with Fischer connector has a built-in buzzer. Red and green L.E.D. built-in the HUD are
also activated via Fischer connector.
If calculated PO
2
differs from the preset Setpoint by not more than 0.2, green indicator is on.
If the difference – more than 0.2, but less than 0.4, green indicator is slowly flashing. If the
difference is more than 0.4, green indicator is quickly flashing.
If calculated PO
2
is BEYOND range of 1.6 – 0.4, green indicator is off, red indicator is quickly
flashing, and warning buzzer is on.
If decompression ceiling depth is exceeded, low or high PO
2
– red indicator is quickly
flashing, warning buzzer is on (quick beeping).
CelWarning and ascending speed is exceeded – red indicator is slowly flashing, and alarm
buzzer is on (slow beeping).
Alarm warnings due to inappropriate PO
2
levels can not be switched off: buzzer will be
beeping until PO2 is back to appropriate range.
CelWarning, and decompression ceiling is exceeded – warning on the screen, alarm buzzer
is on. It is possible to switch the buzzer off by simultaneous pressing of 2 (two) buttons. In
this case the warning is still be on the screen.
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