Signal Routing and System Configuration
R&S
®
SMW200A
217User Manual 1175.6632.02 ─ 16
7. In the "Baseband Input Settings" dialog, configure the other settings as required.
8. Select "Baseband Input Settings > General > State > On" to enable the processing
of the external digital signal.
9. Open "Baseband Input Settings > Signal Monitoring" and monitor the signal over-
flow status.
To apply an external analog signal directly to the I/Q modulator
Fed the external analog wideband signal at the I/Q input connectors (see Table 3-3).
The signal is used as an input signal for the I/Q modulator.
Figure 3-27: Example of test setup (simplified)
1. To configure the input signal source of the I/Q modulator, select "I/Q Mod > I/Q
Mod In > Analog Wideband I/Q In".
2. To access the dialog box for configuring the I/Q modulator settings, select "I/Q Mod
> I/Q Settings > I/Q Modulator".
Refer to Chapter 6, "Applying I/Q Vector Modulation", on page 415 for a descrip-
tion of the settings.
3. In the "I/Q Modulator" dialog, select "General > Analog Wideband I/Q Input > Crest
Factor".
Adjust the crest factor and gain values.
4. To impair the analog signal, adjust the "I/Q Modulator > Impairments" settings (see
also Chapter 5.3, "Impairing the Signal", on page 406).
5. Select "I/Q Mod > On" or "I/Q Mod > I/Q Modulator > General > State > On" to
enable the processing of the external analog signal.
To apply an external differential analog signal directly to the I/Q modulator
1. Select "I/Q Mod > I/Q Settings > Source > Differential Analog I/Q Input".
2. Follow the steps described in "To apply an external analog signal directly to the I/Q
modulator" on page 217.
How to Connect External Instruments and Configure the Signal Flow
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