Keysight Technologies N9322C User Manual page 51

Spectrum analyzers
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Functions and Measurements
Measuring Mul tiple Signals
5
Reduce the resolution bandwidth filter to view the smaller
signal. The smaller signal will be hidden by the larger signal
when the bandwidth settings are wider. Reducing the RBW
setting will allow less of the larger signal to pass through
the analyzer and the smaller signals peak will then rise out
of the noise floor. Place a delta marker on the smaller
signal:
Press BW > 1 > kHz
Press Peak Search
Press Marker > Mode > Delta
Press 50 > kHz
Figure 3-8 Resolved small signal from large signal
The 1 kHz filter shape factor of 15:1 has a bandwidth of 15 kHz at the
N O T E
60 dB point. The half-bandwidth (7.5 kHz) is narrower than the
frequency separation of 50 kHz, so the input signals can be resolved.
43

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