Welcome To The Analog Demodulation Application; Starting The Analog Demodulation Application - R&S FSW-K7 User Manual

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R&S FSW-K7
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:
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AM, FM, and PM demodulation, with various result displays:
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Determining maximum, minimum and average or current values in parallel over a
selected number of measurements
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Maximum accuracy and temperature stability due to sampling (digitization) already
at the IF and digital down-conversion to the baseband (I/Q)
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Error-free AM to FM conversion and vice versa, without deviation errors, frequency
response or frequency drift at DC coupling
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Relative demodulation, in relation to a user-defined or measured reference value
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. Select the MODE key.
User Manual 1173.9240.02 ─ 23
Modulation signal versus time
Spectrum of the modulation signal (FFT)
RF signal power versus time
Spectrum of the RF signal

Welcome to the Analog Demodulation Application

Starting the Analog Demodulation Application
9