Rohde & Schwarz FSW13, Руководство пользователя

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Measurements
R&S
®
FSW
208 User Manual 1173.9411.02 ─ 19
Global SEM limit check
For the complete SEM measurement, which may consist of multiple sub blocks, only
one single limit check is performed. A single limit line is calculated according to the
individual range limit lines and the defined functions for overlapping ranges. The mea-
sured values are then compared with this single limit line. If the limit is exceeded in any
range, the result of the limit check is "failed".
Fig. 5-35: Summarized limit line for multiple sub blocks
5.6.5 SEM Configuration
SEM measurements are selected via the "Spectrum Emission Mask" button in the
"Select Measurement" dialog box. The measurement is started immediately with the
default settings. It can be configured via the MEAS CONFIG key or in the "Spectrum
Emission Mask" configuration dialog box, which is displayed when you select the "SEM
Setup" button in the "Overview" or one of the softkeys from the "SEMask" menu.
The remote commands required to perform these tasks are described in chap-
ter 11.5.6, "Measuring the Spectrum Emission Mask" , on page 729.
Global span settings
The span of the signal to be monitored is configured in the general span settings (see
chapter 6.3.2, "Frequency and Span Settings" , on page 387). Only ranges within this
global span are considered for the SEM measurement.
Spectrum Emission Mask (SEM) Measurement