The Spectrum Application (RF Measurements)
R&S
®
FPL1000
273
User Manual 1178.3370.02 ─ 11
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) Select the "Check Traces" setting for a limit line in the overview.
d) Select the trace numbers to be included in the limit check. You can assign the
same limit line to several traces.
15. The default unit dBm is not suitable for EMI measurements. Define a suitable unit
for the measured values, or select a transducer.
To change the unit:
Select [AMPT] > "Amplitude Config" > "Unit".
To select a transducer:
a) Select [SETUP].
b) Select "Transducer".
c) In the "Transducer" dialog box, set the "View Filter" to "Show Compatible" to
determine the available transducers for the current EMI measurement setup.
d) In the overview, select the "Active" setting for a transducer line.
16. 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 acti-
vated, the signal is demodulated at the active marker positions.
The specified traces to be checked are compared with the active limit lines. The
status of the limit check for the final measurement is indicated in the Result Sum-
mary.
6.2.14.7
Measurement Example: Measuring Radio Frequency Interference
A common measurement task that you can do with the EMI measurement is to detect
radio frequency interference (RFI) or electromagnetic interferences (EMI).
The measurement shows signal levels over a particular frequency range. A typical fre-
quency range for EMI measurements is 150
kHz to 1
GHz. Usually, the captured signal
characteristics are unknown. Thus, the best way to start the measurement is to preset
the R&S
FPL1000 and perform a peak search to obtain a general overview.
If you perform measurements according to a particular EMI standard, a preset also
eliminates the risk of wrong settings inherited from previous measurements. Note that
EMI measurements are possible in the Spectrum application only.
Measurements and Results
