Trying Out the Instrument
R&S
®
FSWP
57Getting Started 1177.5756.02 ─ 13
2. Select the vertical "Trace" tab, and then the horizontal "Traces" tab.
3. For any trace, select "AM Noise" from the "Result" dropdown menu.
4. Start a new measurement to determine the AM noise of the DUT.
(The "Phase + AM Noise" menu item displays the sum of phase and ampli-
tude noise.)
Tip: If you'd like to view both results separately at the same time, open two
phase noise diagrams, one that shows the phase noise, the other showing the
AM noise and perform a measurement.
In addition to the graphical representation of the phase noise characteristics, the
application also provides several tables that show specific phase noise character-
istics.
Measuring spurs
In addition to the graphical display of spurs in the diagram (spikes on the trace),
the application also features a result display that contains a list of all detected
spurs.
► Open the SmartGrid ( ) and drag the "Spurious List" item from the evaluation
bar into the display.
The spurious list contains all detected spurs (including their characteristics) on
all traces and all windows.
For more information see the R&S FSWP user manual.
Measuring spot noise
Spot noise is the phase noise or AM noise at a specific offset frequency (for
example the phase noise at 500 kHz).
► Open the SmartGrid (
) and drag the "Spot Noise" item from the evaluation
bar into the display.
Measurements
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