R&S FSW Series, Руководство пользователя

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Measurements and Results
R&S
®
FSW
250 User Manual 1173.9411.02 ─ 43
Figure 7-47: Summarized limit line for multiple sub blocks
7.6.5 SEM Configuration
Access : "Overview" > "Select Measurement" > "Spectrum Emission Mask"
The SEM measurement is started immediately with the default settings.
The remote commands required to perform these tasks are described in Chap-
ter 14.5.7, "Measuring the Spectrum Emission Mask" , on page 917.
Global span settings
The span of the signal to be monitored is configured in the general span settings (see
Chapter 8.3.2, "Frequency and Span Settings" , on page 443). Only ranges within this
global span are considered for the SEM measurement.
Multi-SEM configuration
In the Spectrum application application only, spectrum emissions can be measured for
multiple sub blocks of channels (see
Chapter 7.6.4.5, "SEM with Multiple Sub Blocks
("Multi-SEM")" , on page 246). Up to 8 sub blocks (with 7 gaps) can be defined. For
each sub block, the familiar configuration settings concerning ranges, limit lines etc.
can be defined in individual tabs. In addition, settings on the sub blocks themselves
must be configured in the "Sub Block" tab of the "Spectrum Emission Mask" configura-
tion dialog box (see
Chapter 7.6.5.2, "Multi-SEM (Sub Block) Settings " , on page 256).
The following settings are available in individual tabs of the "Spectrum Emission Mask"
configuration dialog box.
Spectrum Emission Mask (SEM) Measurement