The Spectrum Application (RF Measurements)
R&S
®
FPL1000
275
User Manual 1178.3370.02 ─ 11
10. Increase the number of sweep points for the EMI measurement.
a) Select [SWEEP] on the front panel.
b) Select the "Sweep Config" .
c) Set the number of "Sweep Points" to
200000
.
11. Select [AMPT] , then select the "Amplitude Config" and, in the "Amplitude" dialog
box, select
V
as the "Unit".
Performing the measurement
1. Configure the EMI measurement markers. In this example, we use 6 markers.
a) Select the "Marker Config" .
b) Activate six normal markers.
c) Set markers 1 to 3 on trace 1. Set markers 4 to 6 on trace 2.
d) For each of these markers, select the "CISPR AV" detector to be used for the
"Final Test", i.e. the subsequent EMI measurement at the marker positions.
2. Select a limit line to check the marker results against.
a) Select [Lines] and then the "Lines Config" , then select the "Lines Config" tab.
b) In the "Line Config" dialog box, select the "View Filter" option: "Show Compati-
ble".
All limit lines that comply with the following conditions are displayed in the over-
view:
● Stored in the
limits
subfolder of the main installation folder of the instru-
ment
● File extension
.LIN
● Compatible to the current EMI measurement settings
c) In the overview, click the "Check Traces" setting for the
EN55011A
limit line.
d) Select trace 1 to be included in the limit check. (Trace 2, which is defined as
the average, is always lower than trace 1, which contains peak values.)
3. Select [RUN SINGLE] to start a new EMI measurement.
If activated, a peak search is performed. For each active marker, a final measure-
ment is performed using the specified detector for the specified dwell time.
If activated, the signal is demodulated. During the initial measurement, demodula-
tion is performed for the entire measurement span; during the final measurement
only the detected peak marker positions are demodulated (for the defined dwell
time).
The specified traces to be checked are compared with the active limit line. The sta-
tus of the limit check for the final measurement is indicated in the Result Summary.
Evaluating the measurement
Check the Result Summary to detect exceeded limit values.
Zoom into the diagram at the conspicuous frequency for more details.
Measurements and Results
