SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
Then Choose:
—Then File Settings
then
— Filename
– Opens the filename labeler to specify a filename.
— 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 capture annotation examples, refer to Figure 9-9 on page 178 and for
more on file settings refer to Chapter 31, “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 Filters
then
— Lowpass Filter None
– then choose:
Mono (L+R)
Sets the audio recording to Mono (single channel) and
combining left and right speaker sounds. This is the
default.
Stereo (L&R)
Sets the audio recorded to be stereo (two channels).
Left (L)
Sets the audio to be recorded to be the left speaker only.
Right (R)
Sets the audio to be recorded to be the right speaker
only.
Difference (L–R)
Sets the audio to be recorded to be the value of the left
side minus the right side of the audio data (single
channel).
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.
Keysight N9938-90003 User's Guide
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