The Spectrum Application (RF Measurements)
R&S
®
FPL1000
274
User Manual 1178.3370.02 ─ 09
a) Press the [SWEEP] key on the front panel.
b) Select the "Sweep Config" softkey.
c) Set the number of "Sweep Points" to
200000
.
10. Press the [AMPT] key, then select the "Amplitude Config" softkey and, in the
"Amplitude" dialog box, select
V
as the "Unit".
Performing the measurement
1. Configure the EMI measurement markers. In this example we will use 6 markers.
a) Select the "Marker Config" softkey and activate six normal markers.
b) Set markers 1 to 3 on trace 1. Set markers 4 to 6 on trace 2.
c) 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 against which the marker results are checked.
a) Press the [Lines] key and then the "Lines Config" softkey, then select the "Lines
Config" tab.
b) In the "Line Config" dialog box, select the "View Filter" option: "Show Compati-
ble".
All stored limit lines with the file extension
.LIN
in the
limits
subfolder of the
main installation folder of the instrument that are compatible to the current EMI
measurement settings are displayed in the overview.
c) In the overview, click the "Check Traces" setting for the
EN55011A
limit line
and select trace 1 to be included in the limit check. (Trace 2, which is defined
as the average, will always be lower than trace 1, which contains peak values.)
3. Press the [RUN SINGLE] key 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.
If necessary, decrease the span to the area in which irregular values occurred and
repeat the measurement.
Measurements and Results
