User manual

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Within a pico network Bluetooth supports a maximum of 8 active
units whereas 127 units can operate a communication link that is
temporarily kept in a passive state (parked) (g. 1).
Fig. 1 : Scatternet
The energy consumption of Bluetooth is extremely low: 30 micro-
amps in passive standby mode and 8 to 30 milli amps in active
state. This low consumption allows Bluetooth to be used also in
battery powered mobile units.
Bluetooth systems are divided in 3 different categories:
Category 1: Projects for long distances (up to 100m)
Category 2: For standard distances (up to 10m)
Category 3: For short distances (10cm to 1m)