Spectrum Analyzer Mode
R&S
®
Spectrum Rider FPH
136
User Manual 1321.1011.02 ─ 11
1. Connect the DUT trigger output to the R&S Spectrum Rider trigger input.
2. Press [SWEEP] key.
3. Select "Trigger" softkey.
The R&S Spectrum Rider opens a submenu to select the trigger setting.
4. Select either the "External Rise" or "External Fall" menu item (rising or falling
edge).
The R&S Spectrum Rider activates the trigger and shows the results of the mea-
surement.
It may be that the burst is not completely visible on the display. To correct that and
make the whole burst visible, you can set a trigger delay.
1. Select "Trigger" softkey.
The R&S Spectrum Rider opens a submenu to select the trigger setting.
2. Select "Trigger Delay" softkey.
The R&S Spectrum Rider opens an input field to define the trigger delay.
3. Adjust the trigger delay until the burst is visible inside the vertical lines that show
the measurement range.
6.1.5
Measuring the Spectrum Emission Mask
The Spectrum Emission Mask (SEM) measurement is a method to detect spurious
emissions or intermodulation products of a signal. When performing a SEM measure-
ment, the R&S Spectrum Rider checks the signal against a spectral mask to see
whether the signal complies with a specific standard or not. Therefore, the R&S Spec-
trum Rider provides predefined spectrum emission masks for various telecommunica-
tions standards.
However, you can define your own spectral masks with the R&S InstrumentView soft-
ware to perform measurements in frequency ranges other than the predefined ones. To
learn how to define Spectrum Emission Masks, refer to the R&S InstrumentView man-
ual.
1. Press [MEAS] key.
2. Select "Meas Mode" softkey.
3. The R&S Spectrum Rider opens a submenu to select the measurement mode.
4. Select the "Spectrum Emission Mask"" menu item.
The R&S Spectrum Rider starts to measure the spectrum emission mask.
Note that the frequency range of the actual measurement depends on the start and
stop frequency you have set on the R&S Spectrum Rider. Correct measurement results
are therefore only possible if the frequency ranges of the SEM are inside the current
span of the R&S Spectrum Rider.
Performing Spectrum Measurements
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