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SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
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 Meas Setup 4 >
180
Timestamp OFF ON
—
audio (.wav) filename.
Storage Device
—
(.wav) file. Select
For more on file settings refer to
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).
– Enables/disables a timestamp label on your
– Sets the storage device location for your audio
Internal
(default),
SD
Chapter 33, "File Management."
Demod Filters
then
– 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
Keysight N9915-90020 User's Guide
Card, or USB.
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