Keysight Technologies FieldFox B Series User Manual page 177

SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
How to Set the Demod Filters
The demodulation (Demod) filters and de-emphasis options help you
accurately recover and analyze the modulating signal. The demod filters apply
to all demod types (AM DSB, AM SSB, FM, FM Stereo and PM), while the
de-emphasis options only apply to the FM and FM stereo demod types.
— Press
Keysight N9938-90006 User's Guide
Filters then
— Lowpass Filter None
None
300 Hz
3 kHz
15 kHz
30 kHz
80 kHz
100 kHz
20 kHz
300 kHz
Custom
— LPF 3 dB Cutoff 300.000 Hz
Custom, sets the customized LPF 3 dB cutoff frequency for the
lowpass filter (Default = 300 Hz; Minimum = 90 Hz, Maximum =
5 MHz).
— Highpass Filter None
None
20 Hz
50 Hz
– then choose:
No lowpass filter is selected.
5-Pole Butterworth LPF with 3 dB cutoff frequency
of 300 Hz.
5-Pole Butterworth LPF with 3 dB cutoff frequency
of 3 kHz.
5-Pole Butterworth LPF with 3 dB cutoff frequency
of 15 kHz.
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 30 kHz.
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 80 kHz.
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 100 kHz.
9-Pole Bessel LPF with 3 dB cutoff frequency of 20
kHz.
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 300 kHz.
5-Pole Butterworth LPF with a custom 3 dB cutoff
frequency (determined by the LPF 3 dB Cutoff
setting).
– When the Lowpass filter is set to
– then choose:
No highpass filter is selected.
2-Pole Butterworth HPF with 3 dB cutoff frequency
of 20 Hz.
2-Pole Butterworth HPF with 3 dB cutoff frequency
of 50 Hz.
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