Welcome to the Analog Demodulation Application
R&S
®
FSW-K7
11User Manual 1173.9240.02 ─ 17
2 Welcome to the Analog Demodulation
Application
The R&S FSW-K7 AM/FM/PM measurement demodulator option converts the
R&S FSW into an analog modulation analyzer for amplitude-, frequency- or phase-
modulated signals. It measures not only characteristics of the useful modulation, but
also factors such as residual FM or synchronous modulation.
The digital signal processing in the R&S FSW, used in the Spectrum application for
digital IF filters, is also ideally suited for demodulating AM, FM, or PM signals. The
firmware option R&S FSW-K7 provides the necessary measurement functions.
The R&S FSW Analog Demodulation application features:
●
AM, FM, and PM demodulation, with various result displays:
– Modulation signal versus time
– Spectrum of the modulation signal (FFT)
– RF signal power versus time
– Spectrum of the RF signal
●
Determining maximum, minimum and average or current values in parallel over a
selected number of measurements
●
Maximum accuracy and temperature stability due to sampling (digitization) already
at the IF and digital down-conversion to the baseband (I/Q)
●
Error-free AM to FM conversion and vice versa, without deviation errors, frequency
response or frequency drift at DC coupling
This user manual contains a description of the functionality that the application pro-
vides, including remote control operation.
All functions not discussed in this manual are the same as in the base unit and are
described in the R&S FSW User Manual. The latest version is available for download
at the product homepage
(http://www2.rohde-schwarz.com/product/FSW.html).
Installation
You can find detailed installation instructions in the R&S FSW Getting Started manual
or in the Release Notes.
2.1 Starting the Analog Demodulation Application
Analog Demodulation is a separate application on the R&S FSW.
To activate the Analog Demodulation application
1.
Press the MODE key on the front panel of the R&S FSW.
Starting the Analog Demodulation Application
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