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3.Together with the data additional information is transmitted. This additional
information allows the Aladin
®
Air Z O
2
to reconstruct faulty data and reco-
gnize useless data.
By means of these redundant measures, faulty transmission is
almost impossible. These transmitted measurements are subjected
to an additional plausibility check. Only such data are used which
are sensible in the current situation.
2 Pressure transmitter and Oxy2
2.1 Pressure transmitter operating modes and functions
Off-mode:
When the tank valve is turned off and the regulator purged the pressure trans-
mitter is in the off-mode. In that case, gas mixture pressure is measured every
5 seconds. When pressure increases (on opening the valve), the pressure trans-
mitter leaves the off-mode automatically. When the tank-valve is closed and the
regulator purged (pressure sinks below 8 bar), the transmitter falls back into
off-mode.
Pair-mode:
After switching on (opening the tank valve), the pressure transmitter sends its
address to the dive computer for a short time. During this time the dive com-
puter can be paired to the pressure transmitter.
Transmission-mode:
As long as tank-pressure is decreasing (during normal breathing) the pressure is
transmitted to the dive computer on average every 5 seconds.
20
1 Description
II Uwatec
®
Aladin
®
Air Z O
2