Operating the Instrument
R&S
®
FSWP
80Getting Started 1177.5756.02 ─ 13
6.1.4 Spot Noise Information
Spot noise information in diagram grid
The diagram contains information about all spot noise positions [T<x>]. Spot
noise information is made up out of the position of the spot noise measurement
on the x-axis and the y-axis. The value in the square brackets after the index indi-
cates the trace to which the spot noise calculation is assigned (Example: [T1]
indicates trace 1). Note that you can also display spot noise information in a sep-
arate table.
Spot noise information in spot noise table
The R&S FSWP also provides a numerical result table for the spot noise mea-
surement. The spot noise table has to be added deliberately. Note that the spot
noise table only contains information when the calculation of spot noise has been
turned on.
Table 6-3: Spot noise information result table
Label Information
Wnd Measurement window that the spot noise has been calculated for.
(Only if there is more than one window containing a phase noise dia-
gram.)
Offset Offset frequency or spot noise position on the x-axis of the Phase
Noise diagram.
Noise [T<x>] Measured noise on the spot noise position for each active trace.
6.1.5 Measurement Progress Information
The Phase Noise result display shows the progress of the measurement in a ser-
ies of green bars at the bottom of the diagram area. For each half decade in the
measurement, the R&S FSWP adds a bar that spans the frequency range of the
corresponding half decade.
The bar has several features.
●
Measurement times less than 1 s
The numbers within the green bar indicate the number of cross-correlation
operations applied to the corresponding half decade.
●
Measurement times greater than 1 s
Understanding the Display Information
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