Measurements
R&S
®
FSW
275User Manual 1173.9411.02 ─ 19
Adjust Settings
If harmonic measurement was performed in the frequency domain, a new peak search
is started in the frequency range that was set before starting the harmonic measure-
ment. The center frequency is set to this frequency and the reference level is adjusted
accordingly.
If harmonic measurement was performed in the time domain, this function adjusts the
reference level only.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:HARMonics:PRESet on page 797
5.10.5 How to Determine the Harmonic Distortion
In chapter 7.4.5, "Measurement Example: Measuring Harmonics Using Marker Func-
tions", on page 522, measuring harmonics was described using marker functions. This
task can be performed much simpler using the Harmonic Distortion measurement, as
described in the following procedure.
1. Select the "Harmonic Distortion" measurement function from the "Select Measure-
ment" dialog box.
2. Define the number of harmonics to be determined using the "No. of Harmonics"
softkey.
3. Perform a sweep.
The trace for the determined harmonics are displayed in the diagram, separated by
red display lines. The measured power for each harmonic in relation to the funda-
mental is indicated in the result table.
4. If the signal changes significantly during or after the harmonics measurement, use
the "Adjust Settings" function to adjust the settings automatically and restart the
measurement.
5.11 Third Order Intercept (TOI) Measurement
The third order intercept point of the R&S FSW can be determined if a two-tone signal
with equal carrier levels is applied to the input.
● About the TOI Measurement.................................................................................276
● TOI Basics.............................................................................................................276
● TOI Results........................................................................................................... 280
● TOI Configuration..................................................................................................281
● How to Determine the Third Order Intercept.........................................................282
●
Measurement Example – Measuring the R&S FSW's Intrinsic Intermodulation... 283
Third Order Intercept (TOI) Measurement
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