Receiver Mode
R&S
®
ESRP
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User Manual 1175.7445.02 ─ 08
be used for the final measurement performed with the CISPR Avg detector and the fre-
quency found in the prescan carried out with the peak detector is taken for the final
measurement using the quasipeak detector.
Consideration of the limit lines ensures that the final measurement is not performed at
frequencies at which the inference level is far below the limit value. A margin below the
limit line can be defined (in dB). Peak values measured in the margin area are also
considered in the final measurement. The margin is valid for all limit lines. Each limit
line is allocated to a trace, i.e. different limit lines are taken for the different detectors.
If no limit lines are activated, the measurement procedure is as if all measured values
would exceed the limit line.
Data Reduction by Editing the Peak List
As an alternative method, it is possible to preset a list of frequencies at which the final
measurements are performed. A typical application is, for example, the statistical
analysis of several units.
The peak list can be either edited manually or can be filled with desired values by
adopting the marker values.
5.1.5
Final Measurement
A final measurement is performed after data reduction, thus reducing the overall mea-
surement time.
The final measurement analyzes only the data that still remains after the preliminary
measurement stages, in other words those frequencies that have been collected in the
peak list. Detectors defined for the final measurement replace those that have been
used during preliminary measurements.
Because the peak list contains a manageable set of frequencies only, the final mea-
surement is also usable in combination with a configuration that requires long mea-
surement times. It is then still possible to perform the measurement in a reasonable
time frame.
During the final measurement, the R&S
ESRP performs a measurement on each fre-
quency in the peak list. When done, it updates the preliminary results in the peak list
with those found during the final measurement.
Automatic vs interactive final measurements
The R&S
ESRP provides two methods to perform a final measurement: an automatic
and interactive final measurement.
An automatic final measurement measures all frequencies in the peak list automati-
cally. The measurement can be interrupted or aborted, or the measurement mode can
be switched to interactive. Measurement settings can not be changed. The advantage
is that the measurement runs on its own.
Control of the final measurement is possible in interactive final measurement mode.
Measurements and Result Displays
