Spectrum (Bluetooth)

The Spectrum trace is the averaged Instantaneous Spectrum display, as shown in the following block diagram. If averaging is OFF, the Spectrum and Inst Spectrum displays are identical.

For Bluetooth Demod, the spectrum is computed from the pre-demodulated time record of the analyzed burst, so it provides a narrow, channel-centered view of the signal for sanity checks.

The Spectrum trace has the following characteristics:

Derived from pre-demodulated Time data.
Averaged if averaging is ON and the average type is RMS(Video), RMS(Video) Exponential, Time, Time Exponential or Continuous Peak Hold averaging.

If averaging is ON, a scan is not included in the average if any of these conditions exist: Pulse Not Found, Sync Not Found, Carrier Unlock.

$image\blk_spectrum_wmf.jpg$