Performing configuration tasks
R&S
®
SGS100A
161User Manual 1173.9105.02 ─ 13
To generate an I/Q modulated signal
1. Connect the test equipment. Provide the external analog modulation signal at the I
and Q connectors of the instrument.
The Figure 11-1 shows an example of the test setup. A signal generator, e.g., the
R&S AFQ100B, is the source of the external analog signal. The signal generator
provides its internal reference signal to the R&S SGS and the connected signal
analyzer, e.g. the R&S FSW.
Figure 11-1: Example of the setup
Tip:
Refer to the user manual of the R&S signal generator and the R&S signal ana-
lyzer for information on how to configure the corresponding instrument.
2. To adjust the settings, select "SGMA-GUI main panel > Instrument Name > Refer-
ence Oscillator > Ext".
3. Select "SGMA-GUI main panel > Instrument Name > Frequency/Phase > LO Cou-
pling Source > Int".
Tip:
For detailed description on how to select the reference frequency source and the
LO coupling source, refer to:
● Chapter 11.4, "How to configure the reference oscillator source", on page 165
and
● Chapter 11.5, "How to configure the local oscillator coupling source",
on page 166.
4. In the "Frequency/Phase" dialog, configure the frequency settings.
5. To set the "RF Level", select the "SGMA-GUI > Instrument Name > Level > RF
Level > Level".
In the same dialog, configure the further "Level" and "Power-On" settings.
6. Optionally, impair the I/Q samples in the I/Q modulator:
How to generate an I/Q modulated signal
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