Keysight Technologies C Series - Page 180

180 Keysight N9915-90020 User’s Guide
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
SA Mode Settings
— Timestamp OFF ON – Enables/disables a timestamp label on your
audio (.wav) filename.
— Storage Device – Sets the storage device location for your audio
(.wav) file. Select
Internal (default), SD Card, or USB.
For more on file settings refer to
Chapter 33, “File Management.”
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 Meas Setup 4
> Demod Filters then
— Lowpass Filter None – then choose:
— LPF 3 dB Cutoff 300.000 Hz – When the Lowpass filter is set to
Custom, sets the customized LPF 3 dB cutoff frequency for the
lowpass filter (Default = 300 Hz; Minimum = 90 Hz, Maximum =
5 MHz).
None
No lowpass filter is selected.
300 Hz
5-Pole Butterworth LPF with 3 dB cutoff frequency
of 300 Hz.
3 kHz
5-Pole Butterworth LPF with 3 dB cutoff frequency
of 3 kHz.
15 kHz
5-Pole Butterworth LPF with 3 dB cutoff frequency
of 15 kHz.
30 kHz
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 30 kHz.
80 kHz
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 80 kHz.
100 kHz
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 100 kHz.
20 kHz
9-Pole Bessel LPF with 3 dB cutoff frequency of 20
kHz.
300 kHz
3-Pole Butterworth LPF with 3 dB cutoff frequency
of 300 kHz.
Custom
5-Pole Butterworth LPF with a custom 3 dB cutoff
frequency (determined by the LPF 3 dB Cutoff
setting).