Atec Rohde-Schwarz-SMA100A - Manual (Page 8)

RF signal
Time
T
1
T
2
T
3
T
n
t
1
t
2
t
n–1
Pulse train: combination of pulses with
different pulse widths and pauses.
Simple creation and transfer of pulse trains with
the Pulse Train Master application software.
8
For pulse modulation, the R&S®SMA100A includes as
standard a high-quality pulse modulator with an on/off
ratio of > 80 dB and a rise/fall time of typ. 7 ns as well as
a basic pulse generator. Optionally, a high- performance
pulse generator with a minimum pulse width of 10 ns,
a resolution of 5 ns and a variety of setting options is
available (R&S®SMA-K23).
An optional feature of the built-in pulse generator is the
generation of pulse trains (R&S®SMA-K27 option), which
are commonly used for radar applications. An example
of a pulse train is shown in the figure on the left. In
contrast to single or double pulses, pulse trains are a
combination of different pulses, which can be a periodical
or non- periodical set of pulses.
The application note “Pulse Train Master for the R&S®SMF
and R&S®SMA Signal Generators” (1MA148, available
from the Application Notes download area on the
Rohde & Schwarz website) comes with a software that
enables the user to easily create and transfer pulse trains
between a PC and an R&S®SMA100A signal generator.
Aerospace
anddefense
applications