Rohde & Schwarz SMM100A, Руководство пользователя

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Getting started
R&S
®
SMM100A
57 User Manual 1179.1341.02 ─ 05
send, for example, a frame trigger signal to the R&S SMM100A. The
R&S SMM100A acts still as the signal source.
2. Use suitable cables to connect the RF and REF OUT connectors of the
R&S SMM100A to the signal analyzer or the DUT.
Upon the receiving of an external trigger event, the R&S SMM100A starts the sig-
nal generation and then generates a continuous signal. An "Arm" stops the signal
generation. A subsequent trigger event causes a restart of the signal generation.
To learn more about this topic, refer to:
●
Chapter 4.4.1.3, "Baseband trigger signals" , on page 94
●
Chapter 11.2, "Configuring local and global connectors" , on page 527
3.3.4 Enabling and configuring a marker signal
Test setups often require that an external device is synchronized to the generated data
stream. For this purpose, the R&S
SMM100A can output marker signals (or markers)
also to the generated signal. The R&S SMM100A provides several regular marker sig-
nals and marker signals specific to the firmware option. With suitable marker settings
for instance, you can mark slot or frame boundaries or mark the start of a particular
modulation symbol.
This example extends further the configurations performed in Chapter 3.3.2, "Generat-
ing a digitally modulated signal" , on page 50. We assume a default connector mapping
(see Figure 3-12 ).
This test setup requires one oscilloscope, like the R&S
®
RTO, as additional equipment.
1. In the block diagram, select "Block Diagram > Baseband > Misc > Custom Digital
Mod > Marker" tab.
2. Select "Marker Mode > Marker 1 > Pulse" and "Divider = 32".
Generated is a periodic marker with marker frequency of 120 KHz. The signal is
output at the User 1 connector of the R&S
SMM100A (see Figure 3-12 ).
3. Use a suitable cable to connect the User 1 connector of the R&S SMM100A to the
monitoring instrument, for example oscilloscope like R&S
®
RTO. See Figure 3-14 .
Trying out the instrument