Keysight Technologies FieldFox B Series User Manual page 175

SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
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Setting the Alternate Frequency (AF) RBW Softkey
When AM DSB, AM SSB, FM, FM Stereo / RDS, or PM are selected and
Demod View = Freq, you can choose from the following:
— Press BW 2 then choose:
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Setting the Audio Capture Playback Softkeys
The FieldFox analog demodulation audio capture playback feature allows you
to capture/record the demodulated audio associated with an analog
demodulation measurement (AM DSB, AM SSB, FM, FM Stereo or PM) and
save it as an audio file. It also allows you to recall and playback audio files
through FieldFox's built-in speaker or headphones.
Currently, the audio capture playback feature supports WAVE files with
mono or stereo LPCM data sampled at 48,000 Hz with 16 bits per sample.
If you are unable to hear your audio data files (*.wav), verify that your
System > Preferences > Preferences > Audio is set to On.
When Analog Demod is selected, you can choose from the following:
— Press Meas Setup 4 >
— If you want to initiate an audio capture:
— If you want to stop an audio capture:
— If you have previously stored an audio file:
Keysight N9938-90006 User's Guide
AF Stop Freq – Sets the AF stop frequency for the AM or FM demodulated
signal.
AF Full Span – Sets the AF full span frequency for the AM or FM
demodulated signal.
Also, you can set the standard Center, Freq Span, and other frequency
softkeys.
AF RBW – Sets the audio frequency (AF) resolution BW for the AM or FM
demodulated signal (Manual or Auto; default = Auto).
Press Capture
Press Stop to stop the current capture of audio data and depending on the
timing of pressing Stop, possibly prevent the audio data from being stored.
Press Playback then
— Play – to play the last current audio file (*.wave) loaded into memory.
— Stop – to disable playback of the current audio file.
More > Audio Capture Playback then
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