RF Signal Configuration
R&S
®
SMA100B
62
User Manual 1178.3834.02 ─ 03
3 RF Signal Configuration
The R&S
SMA100B signal generator generates RF signals with outstanding spectral
purity within the frequency range from 8
kHz up to 6 GHz and with adjustable signal
level over a wide range.
In addition to these real-time CW signals, you can also generate RF signals from pre-
defined lists and sweep signals that vary according to the frequency or amplitude
curves.
Moreover, you can apply versatile analog modulation types with definable characteris-
tics.
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.
In addition, the R&S
SMA100B supports R&S NRP power sensors. Power sensors can
be used to monitor the output level in the generator and to determine the level correc-
tion values for user correction lists.
Signal modes and characteristics
The R&S
SMA100B generates unmodulated or analog modulated RF signals. You can
output 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 3.3, "RF Frequency Settings"
–
Chapter 3.4, "RF Level Settings"
–
Chapter 2.3.1, "Generating an Unmodulated Carrier"
●
Analog modulated signal
Modulates the signal with an analog signal and generates amplitude, phase, fre-
quency and pulse modulation.
See
Chapter 4, "Analog Modulations"
RF signal output modes:
●
Fixed
The RF signal as it is, that means modulated or unmodulated.
●
Sweep
An RF or LF frequency and RF level sweep signal, processed continuously, step-
by-step or individually and with selectable trigger modes. Different sweeps cannot
run simultaneously.
●
List mode
