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Classic Bluetooth Transmitter Classes

Classic Bluetooth transmitters are categorized by power classes, that is, by the amount of RF power output. A Bluetooth Class maximum operating range is directly related to the power output. The class is important in conductive testing because the DUTs and the Frontline unit are connected directly to each other, usually over small distances. The absence of power loss , which occurs during over-the-air transmission, means that larger than normal power levels may be present at the receiving port. Attenuation may be necessary to protect both the DUT and the Frontline unit from excessive power input and to ensure reliable operation.

"Classic Bluetooth Power Classes" lists the maximum power and operating range for each Classic Bluetooth Class.

Classic Bluetooth Power Classes
Class Maximum Power Operating Range
1 100 mW (20 dBm) 100 meters
2 2.5 mW (4 dBm) 10 meters
3 1 mW (0 dBm) 1 meter

Caution: Good engineering judgment is essential to protecting both the Frontline low energy protocol analyzer and the devices under test from power levels that could cause damage. The procedures contained here are general guidelines for connecting the equipment for conductive testing.