
Spectrum Analyzer Mode
R&S
®
Cable Rider ZPH
190
User Manual 1321.0950.02 ─ 07
Figure 8-6: Screen layout for the harmonic distortion measurement
1 = Harmonics measurement mode
2 = Harmonics list
3 = Total harmonics distortion in %
4 = Total harmonics distortion in dB
5 =
Parameter view
6 =
Configuration overview
7 = Markers indicating harmonics (blue lines)
8 = Trace
9 = Harmonic distortion softkey menu
8.1.7.1
Defining the Number of Harmonics
By default, the R&S Cable Rider ZPH shows the signal and its first harmonic. Each
harmonic is indicated by a marker that the R&S Cable Rider ZPH places on the har-
monic (here M1 and M2). Note that all of the markers that have been set are normal
markers that show the absolute frequency of the harmonic.
At the same time, the R&S Cable Rider ZPH also calculates the values for the total
harmonic distortion (THD) and shows the results in a box above the trace diagram. The
values are output in % and dB.
If you want to see more than one harmonic, the R&S Cable Rider ZPH can show up to
six harmonics.
1. Press the [MEAS] key.
2. Select the "Harmonics" softkey.
The R&S Cable Rider ZPH opens an input field to define the number of harmonics.
3. Enter the number of harmonics you would like to see.
Performing Spectrum Measurements