Berkeley Varitronics Systems BumbleBee-TABLET Manual page 29

Fig 20.1: Narrowband unmodulated Signal with a peak power of –31 dBm.
Upon turning the Frequency Modulation off, it can be seen that the spectrum consists of a single peak at
the center frequency of the previous Frequency Modulated signal. The Red Marker on the Peak indicates a
Peak power of –31 dBm. This is in agreement to the principles of modulation that the power in the
modulated signal is the same as the power in the unmodulated signal.
Fig 20.2: power measurement of a 3 channel multicarrier CDMA waveform.
The Figure above shows the power measurement of a 3 channel, multicarrier CDMA waveform. For
demonstration purposes, this is simulated using a CDMA signal source within the 2.4GHz frequency band.
The signal generated has a total channel power of –40 dBm. The BumbleBee Tablet PC accurately
captures and measures this signal power as can be seen below.
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