Triggering The Instrument With An External Signal - R&S SMM100A Getting Started

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R&S SMM100A
Figure 5-4: Block diagram: Generating a digitally modulated signal
5.3 Triggering the Instrument with an External Sig-
nal
The example configurations are rather theoretical cases, because you rarely use
the R&S SMM100A as a standalone instrument. Usually, the instrument would be
connected to a device under test (DUT) and/or other measurement equipment. As
a rule, whenever a test setup requires two or more devices, provide them with a
common reference frequency. Some test setups require control of the signal gen-
eration start and an exact generation start time, determined by a defined trigger
event. For example, by triggering the instrument internally or externally from the
DUT.
This example illustrates the general principle of external triggering and extends
the configuration performed in
Getting Started 1179.1335.02 ─ 02

Triggering the Instrument with an External Signal

Chapter 5.2, "Generating a Digitally Modulated
Trying Out the Instrument
47