The Spectrum Application (RF Measurements)
R&S
®
FPL1000
458
User Manual 1178.3370.02 ─ 03
● Change the "Level" and "Frequency" of the reference point in the "Marker Con-
fig" tab of the "Marker" dialog box, . By default, the current peak value of trace
1 is set.
● Set the fixed reference marker to the current peak value by selecting the "Peak
Search" button in the "Marker Config" tab of the "Marker" dialog box.
● Move the "FXD" display lines that define the position of the fixed reference
marker by dragging them on the screen.
How to Assign a Fixed Reference Marker to Delta Markers
1. In the "Marker" dialog box, select the horizontal "Markers" tab.
2. For the active delta marker that is to refer to the fixed reference marker, select
"FXD" from the "Reference Marker" list.
The delta marker indicates the offset of the current trace value at the marker posi-
tion from the fixed reference value.
7.9.6 Measurement Example: Measuring Harmonics Using Marker Func-
tions
This measurement example describes how to measure harmonics using the provided
marker functions. Note that this task can be performed much simpler using the Har-
monic Distortion measurement (see
Chapter 7.2.9, "Harmonic Distortion Measure-
Signal generator settings (e.g. R&S
FPL1000 SMW):
Frequency:
128 MHz
Level:
- 25 dBm
Procedure:
1. Preset the R&S
FPL1000.
2. Set the center frequency to
128 MHz
.
3. Set the span to
100 kHz
.
The R&S
FPL1000 displays the reference signal with a span of 100 kHz and reso-
lution bandwidth of 1 kHz.
4. Switch on the marker by pressing the MKR key.
The marker is positioned on the trace maximum.
5. Set the measured signal frequency and the measured level as reference values:
a) Press the MKR FUNC key
b) Press the "Reference Fixed" softkey.
Marker Usage
