Measurements and results
R&S
®
FSVA3000/ R&S
®
FSV3000
345
User Manual 1178.8520.02 ─ 08
5.13.6
How to perform EMI measurements
The following step-by-step instructions demonstrate how to perform an EMI measure-
ment with the R&S
FSV/A.
For remote operation, see
Chapter 12.5.13.8, "Programming example: EMI measure-
1. Select [MODE] on the front panel and select the "Spectrum" application.
2. Define the frequency range of the EMI measurement.
a) Select [FREQ] and then the "Frequency Config" .
b) Define the start and stop frequency.
3. Configure the traces for the initial EMI measurement.
a) Select [TRACE] .
b) Select the "Trace Config" to configure as many traces as required.
4. Select [MEAS] on the front panel and select the "EMI" measurement.
The EMI main menu is displayed.
5. Select the "EMI Config" .
6. Define the resolution bandwidth and filter type to be used for the measurement.
By default, the R&S
FSV/A uses a filter with a 3-db bandwidth. EMI measurements
usually require a filter with a 6
dB bandwidth.
7. Define the dwell time for which each marker position is measured during the final
measurement.
8. To obtain an overview of peak values in the input signal during the initial measure-
ment, activate the "Auto Peak Search".
As soon as a sweep is started, the R&S
FSV/A looks for the strongest peaks in the
frequency range you are measuring and positions one of the active markers on
those peaks. The number of active markers determines the number of detected
peaks; no additional markers are activated.
9. Define the type of scaling for the frequency axis according to the definition of the
limit lines in the standard.
10. Optionally, select the "LISN Config" to configure a LISN control.
11. Configure the EMI measurement markers.
a) Select "Marker Config".
b) Activate the number of markers or delta markers you want to analyze.
c) For each active marker, select a detector to be used for the "Final Test", that is:
the subsequent EMI measurement at the marker position.
d) If you already know which frequencies cause irregular values, set the markers
to those positions. (Otherwise perform an initial peak search to obtain an over-
view, see
Electromagnetic interference (EMI) measurement
