Df2 Max (Bluetooth)
(Δf2max) is the maximum frequency deviation measured while the transmitter sends the alternating 10101010 test payload (RF Radio Frequency: A generic term for radio-based technologies, operating between the Low Frequency range (30k Hz) and the Extra High Frequency range (300 GHz).-PHY Physical Layer Test Specification §4.6.3, steps 8–13). Because the bits alternate every symbol, the Gaussian filter prevents the deviation from reaching its full value; Δf2 therefore characterizes the fastest modulation the transmitter produces.
The related pass criterion — that at least 99.9% of all measured Δf2max values exceed the specified floor — is reported by the Df2 Rate result. To produce this result, transmit the Df2 payload and set Payload Pattern to or .
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