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The Spectrum Application (RF Measurements)
R&S
®
FPL1000
273
User Manual 1178.3370.02 ─ 09
A programming example demonstrating an EMI measurement in a remote environment
is provided in
Chapter 11.6.14.8, "Programming Example: EMI Measurement"
Preparing the measurement
1. Press the [PRESET] key.
The R&S
FPL1000 restores the default settings.
2. Define the frequency range of the measurement.
a) Press the [FREQ] key.
b) Press the "Start Frequency" softkey and enter a frequency of 150
kHz.
c) Press the "Stop Frequency" softkey and enter a frequency of 1
GHz.
The R&S
FPL1000 scales the horizontal axis accordingly.
3. Press the [MEAS] key on the front panel and select the "EMI" measurement.
The EMI main menu is displayed.
4. Select the "EMI Config" softkey and define the resolution bandwidth and filter type
to be used 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 6R&S
FPL1000dB bandwidth.
5. Define the dwell time for which each marker position is measured during the final
measurement.
6. To obtain an overview of exceptional values in the input signal during the initial
measurement, activate the "Auto Peak Search".
7. Select the measurement bandwidth.
a) Select the "Res BW CISPR" softkey.
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.
8. Configure the traces for the initial EMI measurement.
a) Press the [TRACE] key.
b) Press the "Trace Config" softkey 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.
9. Increase the number of sweep points for the EMI measurement.
Measurements and Results