If Spectrum Analysis - R&S ESR Series User Manual

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R&S ESR
Up to four bargraphs with different detector weighting can be displayed simultaneously.
The R&S ESR assigns a different color to each detector. This provides an easy way to
compare the signal level with different weighting factors.
1 = current level unit
2 = current receiver frequency
3 = detectors
4 = measured levels (numerically)
5 = measured levels (graphically)
The results in the bargraph are shown upon entering the receiver mode. Either single
or continuous measurement can be selected. The level range is always 100 dB, the
unit of the displayed signal level can be selected.
An enabled maxhold function shows the maximum level that has been measured for
each active detector in addition to the live results. If a new maximum has been found,
the result indication is updated accordingly. The display keeps the overall maximum
level even after changing the frequency until a reset of the maxhold function.
1 = maximum levels; note that the maximum and quasipeak peaks have been measured at frequency differ-
ent to the current receiver frequency

5.1.2 IF Spectrum 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
User Manual 1175.7068.02 ─ 12
Receiver Mode
Measurements and Result Displays
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