178 Keysight N9915-90020 User’s Guide
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
SA Mode Settings
Setting the Alternate Frequency (AF) Freq/Dist Softkeys
When AM DSB, AM SSB, FM, FM Stereo / RDS, or PM are selected and
Demod View = Freq, you can choose from the following:
—Press Freq/Dist
then choose:
—
AF Start Freq – Sets the AF start frequency for the AM or FM demodulated
signal.
— 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.
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:
—
AF RBW – Sets the audio frequency (AF) resolution BW for the AM or FM
demodulated signal (Manual or Auto; default = Auto).
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.
When Analog Demod is selected, you can choose from the following:
—Press Meas Setup 4 > More > Audio Capture Playback then
— If you want to initiate an audio capture:
Press
Capture
— If you want to stop an audio capture:
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.
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