Measurements and Result Displays
R&S
®
ESW
110
User Manual 1177.6298.02 ─ 08
The peak list can be either edited manually or can be filled with desired values by
adopting the marker values.
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
ESW 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
ESW 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.
In interactive final measurement mode, the R&S
ESW stops on each frequency of the
peak list. If required, the frequency can be fine tuned, e.g. if the interferer has shifted.
For fine tuning, the bargraph display can be used to find the new peak value. The level
measurement is performed only after initialization by the user.
It is possible to start with an automatic measurement and later change into interactive
mode. Likewise, it is possible to start measuring in interactive mode and later change
into automatic mode.
IF Analysis
The IF spectrum analysis is a very comfortable means for exact frequency tuning of the
receiver and for identification of signals and of their bandwidth.
In IF spectrum analysis, the spectrum of the RF input signal is displayed in the vicinity
of the receiver frequency. The center frequency of the displayed spectrum is always
the current receive frequency.
The IF analysis provides a fast overview of the assignment of the spectrum adjacent to
the measuring channel proper, or, with a large resolution bandwidth, the spectral distri-
bution of a modulated signal in the channel. Interference of the received useful signal
can also be detected quickly, whether it is CW interference appearing as unmodulated
Test Automation
