Multi-Instrument Setups
R&S
®
SMBV100B
435User Manual 1178.4460.02 ─ 03
– Use the default settings "User 3 > Direction = Input" and "Signal = Global Trig-
ger 1".
– Select "Baseband > ... > Trigger In > Trigger Source > Ext. Global Trigger 1".
●
In R&S SMBV100B#1, set "System Config. > Setup > Global Connectors">"User
5">"Direction = Output".
Set "User 5 > Signal = Manual Trigger".
To trigger the signal generation form R&S SMBV100B#1, select "Global Connectors >
Execute Trigger".
Alternatively, send the remote control command :OUTPut:USER<ch>:TRIGger[:
IMMediate].
R&S SMBV100B#1 generates a short high signal and outputs it at the User connector.
The signal acts as a common external trigger signal for all R&S SMBV100B and all
basebands.
8.4 Control and Operation of External Instruments
In test scenarios that require more than one RF signals, the I/Q analog and digital out-
put signal can be routed to and processed by external instruments. Typically, the gen-
erated I/Q streams are further processed by R&S SGT or R&S SGS.
The R&S SMBV100B provides all settings required to configure the output connectors,
to establish the connections to the connected RF instruments and to control them. The
settings are grouped in the "System configuration" > External RF and I/Q dialog. In this
dialog, you find an overview of all available I/Q input and output connectors and config-
ure the connection to the external instruments.
Once the connection is established, the R&S SMBV100B acts as a master instrument
and controls the setup-related parameters of any connected further processing exter-
nal instrument. Among others, this apples to connected R&S SGT, R&S SGS (also in
combination with R&S SGU) or R&S SMBV100A.
8.4.1 About Signal Routing and System Configuration
Provided the instrument is equipped with the required options, R&S SMBV100B can:
●
Process the internally generated digital baseband signal
●
Process an external digital signal
●
Generate vector-modulated baseband signals, irrespectively of the signal source
●
Impair and add noise to digital baseband signals.
Generally, the processing of the generated baseband signal involves a modulation on
the selected radio frequency (RF) and output at the RF connector. However, the digital
baseband signal can also be output directly, or converted and output as an analog I/Q
signal.
To support you in your configuration tasks, the R&S SMBV100B provides the "System
Configuration" dialog. The main focus of this section is the "System Configuration" set-
Control and Operation of External Instruments
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