Spectrum Analyzer Mode
R&S
®
Spectrum Rider FPH
143
User Manual 1321.1011.02 ─ 06.00
6.1.8.1
Setting a Threshold
You can set a threshold that defines the minimum power level the signal must have. If
the power of the signal is below the threshold, the R&S Spectrum Rider will not set the
markers and therefore will not calculate the modulation depth.
1. Press the [MEAS] key.
2. Select the "Threshold" softkey.
The R&S Spectrum Rider opens an input field to set the threshold.
3. Enter the threshold value you need.
The threshold is represented as a horizontal blue line in the diagram area.
6.1.8.2
Optimizing the Settings
In order to get the best results, you can use the automatic adjustment routine that the
R&S Spectrum Rider offers.
1. Press the [MEAS] key.
2. Select the "Adjust Setting" softkey.
The R&S Spectrum Rider performs a sweep and repeats the peak search
sequence for the three markers.
6.1.8.3
Activating the Marker List
To see the exact frequency of the carrier and its sidebands, you can activate the
marker list that shows the value for each marker.
1. Press the [MKR] key.
2. Select the "Set Marker" softkey.
The R&S Spectrum Rider opens a submenu to select the marker function.
3. Select the checkbox for View List menu item.
The R&S Spectrum Rider displays the marker list that contains the values for car-
rier and sideband.
6.1.9
Working with the Spectrogram Result Display
R&S Spectrum Rider option
R&S FPH-K15 (order number: 1321.0715.02) option is required to operate the R&S
Spectrum Rider in the interference analysis mode.
For more information, see
Chapter 11, "Interference Analyzer"
Performing Spectrum Measurements
