The Spectrum Application (RF Measurements)
R&S
®
FPL1000
274
User Manual 1178.3370.02 ─ 11
A programming example demonstrating an EMI measurement in a remote environment
is provided in
Chapter 10.6.14.8, "Programming Example: EMI Measurement"
Preparing the measurement
1. Select [PRESET] .
The R&S
FPL1000 restores the default settings.
2. Define the frequency range of the measurement.
a) Select [FREQ] .
b) Select "Start Frequency".
c) Enter a frequency of
150
kHz
.
d) Select "Stop Frequency".
e) Enter a frequency of
1
GHz
.
The R&S
FPL1000 scales the horizontal axis accordingly.
3. Select [MEAS] on the front panel and select the "EMI" measurement.
The EMI main menu is displayed.
4. Select the "EMI Config" .
5. Define the resolution bandwidth and filter type for the measurement.
By default, the R&S
FPL1000 uses a filter with a 3-db bandwidth. EMI measure-
ments usually require a filter with a 6-dB bandwidth.
6. Define the dwell time for which each marker position is measured during the final
measurement.
7. To obtain an overview of exceptional values in the input signal during the initial
measurement, activate the "Auto Peak Search".
8. Select the measurement bandwidth.
a) Select the "Res BW CISPR" .
A CISPR (6
dB) filter is configured.
b) Set the bandwidth to
1
MHz
.
The R&S
FPL1000 shows the currently selected resolution bandwidth in the dia-
gram header.
9. Configure the traces for the initial EMI measurement.
a) Select [TRACE] .
b) Select "Trace Config" to configure two traces.
c) Define the detectors to use for the initial measurement. Select the peak detec-
tor for trace 1 and the average detector for trace 2.
The peak detector ensures that the detected peak levels in the frequency range
covered by one pixel are displayed.
The R&S
FPL1000 now displays two traces. Trace 1 shows the peak values, trace
2 shows the average values.
Measurements and Results
