Agilent Technologies Signal Analyzer N9030a - Manual (Page 515)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Swept SA Measurement Description
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Swept Spectrum Analysis (Freq Domain): The analyzer sweeps the LO to generate a
heterodyned IF signal that can be detected to analyze the signal content of a range of
frequencies. The x-axis of the display is frequency, the Y Axis is amplitude.
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Swept FFT Analysis (Freq Domain): In some cases there is an advantage to not actually
sweeping the LO, but instead analyzing the signal by taking a time record and performing FFT
analysis. This is what is done in swept FFT analysis, but the data is still presented as though
it were a sweeping spectrum analyzer. The x-axis of the display is frequency, the Y Axis is
amplitude.
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Zero Span Analysis (Time Domain): In Zero Span analysis, the analyzer stops sweeping the LO,
placing it at the center frequency, and then takes time data from the detector while stopped at
that frequency. Because the LO is not moving, the frequency span is zero. The time data is
presented left to right across the screen just like on an oscilloscope. The x-axis of the display
is time, and the Y Axis is amplitude.
All of the tools such as markers, peak tables, limit lines, trace math, N dB points, and marker
functions are available in Zero Span measurement analysis, although some work differently in the
time and frequency domains.
Key Path Meas
Initial S/W Revision Prior to A.02.00
Remote Language Compatibility Measurement Application Reference 515