Configuring the Internal Baseband Source
R&S
®
SMW200A
243User Manual 1175.6632.02 ─ 30
Step 2: Enable the following settings:
●
"ARB > Trigger In > External Delay Unit > Time"
●
"ARB > Trigger In > Specified External Delay = 10 us"
Logically, the "Actual External Delay" changes to 10 us.
Step 3:
●
Switch to "ARB > Trigger In > External Delay Unit > Samples".
The value of "ARB > Trigger In > External Delay" is 10 samples.
This principle applies for any external triggering and triggering via the other paths.
Receiving and Providing Trigger Signals
In test setups that combine the signal of two or more instruments and/or basebands it
is often required that:
●
The signal generation starts at a defined moment
●
The signal generation starts simultaneously (or with an exactly defined delay) in:
– All involved instruments
– All basebands of the same R&S SMW
The generation of simultaneous baseband signals within the same instrument
requires a common trigger event to define the signal generation start. This section
explains how the R&S SMW supports you to achieve this requirement.
For information on simultaneous signal generation start in multiple instruments,
see Chapter 10.3, "Generating Time-Aligned Baseband Signals", on page 640.
Simultaneous Signal Generation Start in All Basebands
The R&S SMW supports you to trigger all basebands simultaneous in the following
cases:
●
In system configuration with Coupled sources
See "Coupled or separate baseband sources" on page 112
●
In configuration that involves signal routing with signal addition, like:
– Any MIMO configuration
See Chapter 4.2.2, "Using the System Configuration Capabilities", on page 111
– Routing and summing of Baseband and/or Streams signals before and after the
"Fading" blocks
Common Functions and Settings in the Baseband Domain
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