Signal Routing and System Configuration
R&S
®
SMW200A
213User Manual 1175.6632.02 ─ 16
2. Set "System Config. > Setup > Global Connectors" > "User 6 > Direction = Out-
put".
Set "User 6 > Signal = Manual Trigger".
3. Define the baseband signal, for example an LTE 8x8 MIMO signal. Alternatively,
load 8 waveforms in the ARB generator.
See also "To define the baseband signal" on page 195
4. For the selected baseband signal, configure the trigger settings:
a) Enable "Baseband > EUTRA/LTE > Trigger > Trigger Mode > Armed Retrig-
ger".
b) Set "Trigger Source > Ext. Global Trigger 1".
Per default, the "Ext. Global Trigger 1" signal is expected at USER3.
5. Select "Fading > Fading Settings":
a) Select "Restart" > "Restart Mode > Baseband Trigger".
b) Configure the settings as required.
The 8x8 MIMO configuration generates 64 correlated channels. Predefined
channel models do not exist.
c) Select "Fading > State > On".
6. Select "Frequency = 1.95 GHz" and "Level = -50 dBm"
7. Configure each of the R&S SGT as described in "To connect instruments to the I/Q
analog interface" on page 199.
8. Press the SAVE/RCL key and store the instrument setup, for example as
8x8_subset1.savrcltxt file.
The RF outputs are active, the fading simulator is enabled but not running, the
baseband generator is not active. The whole system is triggered jointly, as descri-
bed in "To start signal generation" on page 214.
To configure the R&S SMW that simulates the second subset
1. Transfer the save/recall file (8x8_subset1.savrcltxt) to R&S SMW#2, press
the SAVE/RCL key and load it.
See also:
● Chapter 10.9, "How to Transfer Files from and to the Instrument", on page 644
● Application sheet RS SMW Fast Data Alignment
(available on the R&S SMW product page at www.rohde-schwarz.com/manual/
smw200a)
2. Select "System Configuration" > "Subset = 2".
3. In the status bar, select the icon "Int. Ref" and select "Reference Frequency >
Source > External".
4. For the selected baseband signal, select "Baseband > EUTRA/LTE > Trigger" and
observe the settings.
How to Connect External Instruments and Configure the Signal Flow
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