R&S SMCVB-KB106, Начало работы, Страница: 47 / 79

Trying Out the Instrument
R&S
®
SMCV100B
47 Getting Started 1432.7046.02 ─ 02
6.4 Enabling and Configuring a Marker Signal
Test setups often require synchronization of an external device with the generated
data stream. For this purpose, the R&S
SMCV100B can output maximum two
marker signals (or markers) also to the generated signal.
The R&S SMCV100B provides four regular marker signals. You can output two of
the marker signals, one to each of the "User"1/2 connectors.
With suitable marker settings for instance, you can mark slot or frame boundaries
or mark the start of a particular modulation symbol.
Prerequisites
●
Minimum configuration as in "Prerequisites" on page 36
●
Option custom digital modulation R&S SMCVB-K199
This example extends further the configurations performed in Chapter 6.2, "Gen-
erating a Digitally Modulated Signal" , on page 39. We assume a default connector
mapping (see Figure 6-5 ).
This test setup requires one oscilloscope, like the R&S
®
RTO, as additional equip-
ment.
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 SMCV100B (see Figure 6-5 ).
3. Use a suitable cable to connect the "User" 1 connector of the
R&S SMCV100B to the monitoring instrument, for example an oscilloscope
like R&S
®
RTO. See Figure 6-7 .
Enabling and Configuring a Marker Signal