Signal Routing and System Configuration
R&S
®
SMW200A
128User Manual 1175.6632.02 ─ 30
See user manual R&S SMW-K551 Generation of Digital "Slow IQ" Signals.
See also Chapter 4.3.4, "Supported Digital Interfaces Depending on the System Con-
figuration", on page 119.
Remote command:
:SCONfiguration:OUTPut:MODE on page 915
Signal Routing
Option: R&S SMW-B10
Defines the signal routing in non-MIMO Standard mode. In a fully equipped Standard
baseband instrument, the following configurations are available:
●
"A->A, B->B"
●
"A->A, B->A"
●
"A->B, B->B"
●
"A->A and B, A->A and B"
●
"B->A and B, B-> (open)"
●
"A-> (open), B->A and B"
The preview diagram displays the signal routing for the selected configuration.
Execute "Apply" to trigger the instrument to adopt the current configuration.
Remote command:
:SCONfiguration:FADing on page 916
System Configuration LxMxN
In Advanced mode, the signal routing, i.e. the fading/baseband configuration LxMxN is
determined by three parameters, "Entities", "BB Signals", and "Streams". The available
configurations depend on the installed hardware and software options (see data
sheet).
Note: The RF outputs are disabled, if you apply new System Configuration LxMxN
and/or change the Baseband Source Config.
Entities (Users, Cells) ← System Configuration LxMxN
Defines the number of entities to be generated.
An entity is a self-contained independent system, consisting of its own baseband part
with possible fading simulator and noise generator and an RF part. An example of an
entity is a user/mobile station or a cell/base station in one digital standard (e.g. 3GPP
FDD, EUTRA/LTE, etc.). The R&S SMW can generate the signals of up to 8 entities.
The Table 4-6 shows the interdependency between the number of entities (L), the num-
ber of baseband signals (M) and the number of streams (N).
Table 4-6: Available value ranges and allowed combinations
Number of entities (L) Number of base-
bands (Tx antennas)
(M)
Number of streams
(Rx antennas)
(N)
Baseband Source Config
1 1 to 4 1 to 4 Separate, coupled
1 8 1, 2 Coupled
1 1, 2 8 Separate, coupled
1 8 8 Coupled
System Configuration Settings
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