Getting Started
R&S
®
FSPN
70
User Manual 1179.4363.02 ─ 01
2. Perform a [PRESET].
3. Select the "Baseband Noise" measurement via the [MEAS] key.
4. Enter the "Overview" dialog box, and from there, enter the "Input" dialog box.
5. Select the vertical "Baseband" tab.
6. Turn on the baseband input.
The application automatically starts a continuous measurement and measures the
noise characteristics of the DUT in the default frequency range.
3.4.2.4
Adding Another Measurement Channel
Measuring the noise characteristics in two different measurement channels allows you,
for example, to capture and analyze two different data streams with different measure-
ment configurations.
Adding another measurement channel
1. Select the [MODE] key.
2. Select the "Phase Noise" item in the "Mode" dialog box.
The firmware adds a second instance of the phase noise application which is inde-
pendent of the first one.
3.4.3
Result Evaluation
The phase noise application provides several tools to control the data displayed in the
various result displays. Some tools have an effect on the graphical result displays,
other on the numerical results and still others on both graphical and numerical (for
example in case the numerical results are based on the graphical results).
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Cross-Correlation Gain Indicator
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Miscellaneous Evaluation Tools
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3.4.3.1
Trace Smoothing
How to smooth the trace by averaging the measurement data
When you average the trace, the application measures the data several times and
builds an average over all measurements when it is done. Averaging measurement
data yields a smoother trace.
Trace averaging is applied to all traces.
1. Enter the "Overview" dialog box, and from there, enter the "Noise Config" dialog
box.
Trying Out the Instrument