Common analysis and display functions
R&S
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FSVA3000/ R&S
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FSV3000
539
User Manual 1178.8520.02 ─ 08
Alternatively, the reference point can be determined automatically by a peak search
after each sweep. Use this function to track a drifting source during a phase noise
measurement. The delta marker 2, which shows the phase noise measurement result,
keeps the delta frequency value. Thus, the phase noise measurement leads to reliable
results in a certain offset although the source is drifting. Only if the marker 2 reaches
the border of the span, the delta marker value is adjusted to be within the span. In
these cases, select a larger span.
The result of the phase noise measurement is the difference in level between the refer-
ence point and the noise power density. It is indicated as the function result of the
phase noise marker in the "marker table".
The sample detector is automatically used and the video bandwidth set to 0.1 times the
resolution bandwidth (RBW). The two settings are considered in the correction values
used for the noise power measurement. To obtain stable results, two pixels on the right
and the left of the delta marker position are taken for the measurement.
The procedure to determine the noise power is identical to the method used for the
noise power measurement (see
Chapter 7.3.4.2, "Measuring noise density (noise
The individual marker settings correspond to those defined in the "Marker" dialog box.
Any settings to the marker state or type changed in the "Marker Function" dialog box
are also changed in the "Marker" dialog box and vice versa.
Marker usage
