Signal Routing and System Configuration
R&S
®
SMW200A
199User Manual 1175.6632.02 ─ 16
To connect instruments to the I/Q analog interface
In this example, we assume a "Fading/Baseband Configuration > 1x4x4 MIMO" and
the following stream mapping: Stream A and B are output at RF A and B; stream C and
D at I/Q OUT X respectively.
The test setup uses the analog I/Q outputs and requires two additional instruments,
2xR&S SGS (see Figure 3-17). To connect and configure each of the R&S SGS to the
I/Q output interfaces, proceed as follows:
1. Perform one of the following:
● Connect the R&S SMW and the external instruments to the LAN
● Connect the external instruments to the USB connector of the R&S SMW.
2. Supply all instruments with common frequency reference signal:
● Use an external common frequency source.
● Distribute the reference frequency of the R&S SMW to the external instru-
ments.
See Chapter 7.4, "Reference Oscillator", on page 441.
3. Use suitable cables and connect the external instruments to the I/Q connectors of
the R&S SMW.
See also "To find out the correct connector" on page 192.
4. Select "Block Diagram > I/Q OUT 1/2" to unfold the "I/Q Analog" block
Note:
Per default, the analog I/Q outputs are disabled.
5. Select "I/Q Analog > State > On", to enable the analog I/Q outputs with their default
settings.
6. Open the "Taskbar > System Config > System Configuration > External RF und
I/Q" dialog.
Select "I/Q OUT1 > External Instrument > Config".
7. In the "I/Q OUT 1: External Instrument Configuration" dialog, select "Detect".
The R&S SMW searches through the LAN and the USB connections and updates
the dialogs with the retrieved information, like "IP Address", or "Instrument Name".
How to Connect External Instruments and Configure the Signal Flow
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