Rohde & Schwarz FSW Series - 3 Measurements and Result Displays; Basis for evaluation

Measurements and Result Displays
R&S
®
FSW-K7
15User Manual 1173.9240.02 ─ 17
3 Measurements and Result Displays
The data that was measured by the R&S FSW can be evaluated using various different
methods. In the Analog Demodulation application, up to six evaluation methods can be
displayed simultaneously in separate windows. The results can be displayed as abso-
lute deviations or relative to a reference value or level.
The abbreviation "AF" (for Audio Frequency) refers to the demodulated AM, FM or PM
signal.
Basis for evaluation
All evaluations are based on the I/Q data set acquired during the measurement. The
spectrum of the modulated signal to be evaluated is determined by the demodulation
bandwidth. However, it can be restricted to a limited span ("AF Span") if only part of
the signal is of interest. Furthermore, the time base for evaluations in the time domain
can be restricted to analyze a smaller extract in more detail, see chapter 4.6, "Time
Domain Zoom", on page 32.
AM Time Domain.......................................................................................................... 15
FM Time Domain...........................................................................................................16
PM Time Domain.......................................................................................................... 17
AM Spectrum................................................................................................................ 18
FM Spectrum.................................................................................................................19
PM Spectrum................................................................................................................ 20
RF Time Domain...........................................................................................................21
RF Spectrum.................................................................................................................22
Result Summary............................................................................................................23
Marker Table.................................................................................................................24
Marker Peak List........................................................................................................... 25
AM Time Domain
Displays the modulation depth of the demodulated AM signal (in %) versus time.