Rohde & Schwarz R&S SMW200A - Modulation Signals; Required Options

Configuring the RF Signal
R&S
®
SMW200A
531User Manual 1175.6632.02 ─ 30
8.8.1 Required Options
The equipment layout for generating the analog modulation signals includes per signal
path:
●
Option frequency (e.g. R&S SMW-B1003)
●
Option baseband main module, one/two I/Q paths to RF (R&S SMW-B13/-B13T) or
option wideband baseband main module two I/Q paths to RF (R&S SMW-B13XT)
To perform for example I/Q modulation and an analog frequency or phase modula-
tion in one path simultaneously, option R&S SMW-B13T/B13XT must be installed.
●
Option pulse modulator (R&S SMW-K22)
●
Option high performance pulse generator (R&S SMW-K23)
●
Option multi-function generator (R&S SMW-K24)
●
Option AM/FM/PhiM (R&S SMW-K720)
●
earlier RF hardware versions:
– Option FM/PhiM modulator (R&S SMW-B20) or
– Option FM/PhiM modulator and low phase noise (R&S SMW-B22)
8.8.2 Modulation Signals
The signal sources for the modulation signal are two internal generators, LF and Noise,
and a pulse generator, but you can also use an externally supplied signal, see External
Signal Sources.
You can perform the AM, FM and PhiM with the signal of any of the provided sources.
Even more, you can merge two modulation signals, for example, to generate a two-
tone signal. Similarly, you can forward the used modulation signal to the output.
8.8.2.1 Internal Signal Sources
Fully equipped, the R&S SMW provides the following internal modulation sources:
●
LF Generator
Supplies sinusoidal and square waves in the frequency range 0.1 Hz to 1 MHz and
selectable shapes.
To obtain a triangle, trapezoid or square wave, a pulse signal, the R&S SMW con-
verts the sinusoidal signal internally to the respective shape.
●
Multifunction generator
A further LF generator for use as a second modulation source. It features an exten-
ded frequency range of 0.1 Hz to 10 MHz and selectable signal shapes. Alterna-
tively, you can use it to generate a noise modulation signal.
●
Noise generator
Supplies white noise with selectable bandwidth and level distribution.
●
High performance pulse generator
Allows you to generate either single or double pulse signals.
Analog Modulations