Keysight Technologies C Series - Page 177

Keysight N9915-90020 User’s Guide 177
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
SA Mode Settings
If FM, choose from:
— FM Top Y – Determines the Y axis frequency (1 kHz to 1 GHz) of the FM
demodulation waveform is displayed (Default = 100 kHz).
If FM Stereo / RDS, choose from:
—
FM Top Y – Determines the Y axis frequency (1 kHz to 1 GHz) of the FM
demodulation waveform is displayed (Default = 100 kHz).
If PM, choose from:
— PM Top Y – Determines the Y axis phase (0 to 100 radians) of the PM
demodulation waveform is displayed (Default = 5).
For any of the following: AM DSB, AM SSB, FM, FM Stereo / RDS, or PM,
choose from:
Refer to Figure 9-7 on page 182, Figure 9-8 on page 183, Figure 9-9 on
page 183
, and Figure 9-10 on page 184.
— Demod SwpT – Sets the X-axis to display the demodulation sweep time for
the demodulated waveform (minimum = 50 μs; maximum = 50 ms).
— Peak OFF ON – This adds peak positive and peak negative metrics to the
main metrics measurement. For example, in FM peak ON will include peak
positive (Peak +) and negative (Peak -) frequency deviation metrics to
appear. Peak ON will also enable peak traces on the demodulation
waveform and audio frequency spectrum (Default = OFF).
—
Demod Type – Sets the demodulation type.
Choose from
AM, AM SSB, FM, FM Stereo / RDS, and PM.
—Then, press
More – opens a menu of softkeys: Average Type, Average
Count, and Demod View Time Freq.
—
Average Type – Selects the way the demodulated signal values are
averaged. Choices are Power (#PAvg annotation is displayed), Log (#LgAv
annotation is displayed), Voltage (#VAvg annotation is displayed). Auto is
the default and when selected the FieldFox chooses the type of averaging
that is used based on the current settings.
—
Average Count – Determines the amount of averaging used (1 to 10K;
Default = 10).
— Demod Filters – Refer to “How to Set the Demod Filters” on page 180.
—
Demod View Time Freq – Toggles how the demodulated signals are
displayed (Time (waveform) or Frequency (spectrum)); Default = Time).
— Audio Capture Playback – Refer to “Setting the Audio Capture Playback
Softkeys” on page 178
.