Rohde & Schwarz ESRP Series, Руководство пользователя

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Spectrum Measurements
R&S
®
ESRP
311 User Manual 1175.7445.02 ─ 08
R&S ESRP set to a small span. Only the frequency range around the harmonics will
then be measured with a small resolution bandwidth.
Measurement Results
As a result of the harmonics distortion measurement, the zero span sweeps on all
detected harmonics are shown in the diagram, separated by red display lines. This pro-
vides a very good overview of the measurement.
In addition, a result table is displayed providing the following information:
●
1st harmonic frequency
●
THD (total harmonic distortion), relative and absolute values
●
For each detected harmonic:
–
Frequency
– RBW
– Power
The results can also be queried using the remote commands:
THD:
CALCulate<n>:MARKer<m>:FUNCtion:HARMonics:DISTortion?
on page 755
List of harmonics:
CALCulate<n>:MARKer<m>:FUNCtion:HARMonics:LIST?
on page 755
Softkeys for Harmonic Distortion Measurements
Harmonic Distortion .....................................................................................................311
└ No. of Harmonics .......................................................................................... 312
└ Harmonic Sweep Time ..................................................................................312
└ Harmonic RBW Auto .....................................................................................312
└ Adjust Settings .............................................................................................. 312
Harmonic Distortion
Opens a submenu to determine the settings for harmonics measurement and activates
the harmonic distortion measurement.
With this measurement you can measure the harmonics of a signal. In addition the
THD (total harmonic distortion) is calculated in % and dB.
With span > 0 Hz, an automatic search for the first harmonic is carried out within the
set frequency range. Also the level is adjusted. In zero span, the center frequency is
unchanged.
In the upper window, the zero span sweeps on all harmonics are shown, separated by
display lines. In the lower window, the mean RMS results are displayed in numerical
values. The THD values are displayed in the marker field.
For details see Chapter 6.1.1.12, "Measuring Harmonic Distortion" , on page 308.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:HARMonics[:STATe]
on page 757
CALCulate<n>:MARKer<m>:FUNCtion:HARMonics:DISTortion?
on page 755
CALCulate<n>:MARKer<m>:FUNCtion:HARMonics:LIST?
on page 755
Measurements