Modulation Analysis
R&S
®
Spectrum Rider FPH
253
User Manual 1321.1011.02 ─ 11
Chapter 6.2.5, "Configuring and Triggering the Sweep"
Selecting the sweep mode
In its default state, the R&S Spectrum Rider measures continuously. In this mode, the
R&S Spectrum Rider demodulates the signal until you stop it deliberately. The mea-
surement results are updated accordingly.
In single mode, the R&S Spectrum Rider demodulates the signal over one sweep.
Subsequent update of measurement results starts only when you deliberately initiate it.
1. Press [SWEEP] key.
The R&S Spectrum Rider opens the sweep menu.
2. Select the sweep mode.
● "Cont Sweep": Demodulates signal continuously
● "Single Sweep": Demodulates signal over one sweep
3. Select the required sweep mode.
Selecting the trigger settings
In addition to the trigger settings available in the spectrum mode, the Digital Demodula-
tion measurement provides an I/O power trigger source.
The I/Q power trigger initiates a measurement when the magnitude of the sampled I/Q
data exceeds a certain level.
1. Press [SWEEP] key.
The R&S Spectrum Rider opens the sweep menu.
2. Select the "Trigger" menu item.
The R&S Spectrum Rider opens a submenu to select the trigger settings.
3. Select the "Trigger" menu item.
The R&S Spectrum Rider opens a submenu to select the trigger settings.
4. Select the "IQ Power" menu item.
The R&S Spectrum Rider opens an input field to define the trigger level.
5. Define an appropriate trigger level.
To make sure that the trigger initiates a measurement, it is recommended to set a
trigger level 6 dB lower than the actual expected trigger level.
Take note also on the detection of burst signal. See
Digital Demodulation
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