Configuring the RF Signal
R&S
®
SMW200A
457User Manual 1175.6632.02 ─ 30
8 Configuring the RF Signal
The vector signal generator R&S SMW generates RF signals with outstanding spectral
purity within the frequency range from 100 kHz up to 44 GHz and with adjustable sig-
nal level over a wide range.
In addition to these real-time CW signals, you can generate RF signals from predefined
lists and sweep signals that vary according to the frequency or amplitude curves.
You can also apply versatile analog modulation types with definable characteristics.
The variably adjustable output level due to the built-in attenuator, allows you to vary the
RF signal level over the full level range. There are different methods to improve signal
performance and to optimize the signal quality for the particular application, or to
increase the accuracy and reliability of the generated RF signal.
The R&S SMW supports R&S NRP power sensors, e.g. to monitor the output level of
the generator or to determine the level correction values for user correction lists.
Signal modes and characteristics
The R&S SMW generates unmodulated or analog modulated RF signals. You can out-
put the signal in fixed mode or as a signal having periodically varying frequencies or
amplitudes.
Signal modes for RF signal generation:
●
Unmodulated signal
Generates an unmodulated continuous wave (CW) of constant frequency and
amplitude.
For information on the signal frequency and level settings and example on how to
configure a simple CW signal, see:
– Chapter 8.4.1, "RF Frequency Settings", on page 462
– Chapter 8.4.2, "RF Level Settings", on page 466
– Chapter 3.3.1, "Generating an Unmodulated Carrier", on page 53
●
Analog modulated signal
Modulates the signal with an analog signal and generates amplitude, phase, fre-
quency and pulse modulation.
See Chapter 8.8, "Analog Modulations", on page 529.
●
Vector modulated signal
Generates an I/Q vector modulated signal
See Chapter 7, "Applying I/Q Vector Modulation", on page 448.
The R&S SMW allows you to provide the RF signal with constant or varying frequen-
cies and/or amplitudes at the output:
●
Constant frequency and level (CW/Fixed mode)
The RF output signal has the set frequency and level.
●
Varying frequency and/or level
– Sweep mode
To Next Page
Loading...