System overview
R&S
®
SGS100A
58User Manual 1173.9105.02 ─ 13
Figure 7-9: Simplified block diagram
TCXO = Built-in reference oscillator
OCXO = Oven-controlled oscillator, requires hardware option
R&S SGS-B1.
Synth. = Synthesizer
I/Q Mod = I/Q Modulator
REF/LO IN, REF/LO OUT, I, Q, RF OUT = Connector at the rear panel
"Ref. Osc. Source", "REF/LO Out", "LO Coupling
Source", "Mod On/Off", "RF On/Off", "Operation
Mode"
= R&S SGMA-GUI equivalent parameter
The instrument can generate a CW or an I/Q modulated signal ("Mod On/Off"). The fre-
quency and level settings are adjustable ("Level", "RF On/Off", "Frequency"). The
instrument can use its internal reference frequency or a fed-in external one ("REF
IN/LO IN", "Ref. Osc. Source"). The reference frequency can also be output for syn-
chronization purposes ("REF OUT/LO OUT", "REF/LO Out"). The local oscillator (LO)
signal can be distributed in such a way, that two or more instruments are connected to
generate phase coherent signals ("LO Coupling Source", "REF OUT/LO OUT").
Whereas both possibilities, the input of the reference frequency and the input of a LO
signal, exclude each other because they use the same connectors. The same applies
for the output of the reference frequency and the LO signal. The instrument can also
be configured to work in the special baseband bypass mode ("Operation Mode").
Refer to Chapter 11, "Performing configuration tasks", on page 160 for an overview of
the general operating tasks. The Chapter 11.1, "How to generate an I/Q modulated sig-
nal", on page 160 explains the basic operating concept by an example.
Introduction to the instrument functions
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