Signal Routing and System Configuration
R&S
®
SMW200A
133User Manual 1175.6632.02 ─ 30
The dialog provides the settings for routing of the signal streams to the available
output connectors, the analog RF and I/Q output, and the digital I/Q output connec-
tors.
Meaning of the background colors:
● Yellow: Streams mapped to the RF, I/Q and the BBMM connectors can be
added, possibly also frequency and phase shifted. At the BBMM connectors,
streams can also be output multiplexed.
● Gray: The stream mapping to the FADER connectors is fixed.
Only single streams can be mapped; frequency offset cannot be applied.
If R&S SMBV or R&S SGT instruments are connected to the FADER connec-
tors and they are remotely controlled by the R&S SMW, the selected frequency
offset is applied to the RF signal of these instruments.
The settings are displayed in form of a stream matrix, where:
● The number of rows is equal to the number of the generated streams
("System Configuration > Fading/Baseband Configuration > Advanced Mode"
and selected Entities (Users, Cells)*Streams (Rx Antennas))
● The column display only the available digital output interfaces ("System Config-
uration > External RF and I/Q > Direction > Out").
Settings:
f
offset
, MHz....................................................................................................................133
Phase Offset................................................................................................................134
Map Stream X to Connector........................................................................................134
Combination Mode......................................................................................................134
f
offset
, MHz
Option: R&S SMW-B9 - available if "Signal Outputs = Analog Only"
Sets an absolute frequency offset; streams routed to the RF, I/Q and BBMM connec-
tors are shifted in the frequency domain.
Frequency offset is also applied to R&S SMBV and R&S SGT instruments connected
to the FADER outputs.
Tip: Use this parameter:
●
To shift the used frequency band in the RF frequency section without modifying the
RF settings
●
To separate streams in the frequency domain, if these streams are added and
routed to the same output connector.
Note: The parameters "Baseband Offset" and "Frequency Offset" have different
impact.
Both parameters shift the signal in the frequency domain, but only the f
offset
affects the
calculation of the "Doppler Shift".
If the fading simulator is used, do not apply a "Baseband Offset" but do use the "Fre-
quency Offset" instead.
The value range depends on the following:
●
Installed options (e.g. baseband generator und baseband extensions)
●
"System Config > Fading/Baseband Config" > Mode
●
"System Config > Fading/Baseband Config" > Signal Outputs
For more information, see data sheet.
System Configuration Settings
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