Multi-Instrument Setups
R&S
®
SMW200A
612User Manual 1175.6632.02 ─ 16
b) In a star configuration:
RF A
REF OUT
RF B
REF INUSER6 USER5
REF IN USER5
RF A
RF B
RF
Ref. Signal
Sync and Trigger Signal
Master Slave#1
Slave#2
Ref. Signal
Sync and Trigger Signal
Figure 9-2: Example: Star configuration for distributing the synchronization signal (simpli-
fied)*
* = I/Q, LAN etc. connections are not shown
● Connect USER 6 connector of the master R&S SMW to USER 5 connector
of one of the slaves
● Connect for example also USER 1, 2 connector of the master R&S SMW to
USER 5 connector of other slave instruments.
It is also required, that the synchronization signal Sync Out is routed to
these connectors.
See "Configure the slave R&S SMW" on page 613
Note: Avoid unnecessary cable length and branching points.
Use cables of the same length and type for all connections between the master
and the slaves and between slaves.
2. To distribute the internal reference signal of one of the instruments (in this example
the master), connect the instruments in a daisy chain concerning the reference
frequency.
That is, connect REF OUT of the master R&S SMW to the REF IN of the first slave,
etc.
For more information, see Chapter 7.4, "Reference Oscillator", on page 441.
Configure the master R&S SMW
1. Select "RF > Reference Frequency > Source > Internal".
2. Select "System Config > System Config > Multi Instruments".
3. Select "Multi Instrument Trigger" > "Master".
4. Select "State > On".
5. In the "Global Connector Settings" dialog, and observe current signal assignment.
Per default, the synchronization signal ("Baseband Sync Out") is output at the
USER 6.
6. If you use star configuration: in the "Global Connector Settings" dialog, for all con-
nectors on that you want to output the synchronization signal:
a) Set "Direction > Output "
b) Set "Signal > Baseband Sync Out"
Generating Time-Aligned Baseband Signals
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