Measurements
R&S
®
FSW
204User Manual 1173.9411.02 ─ 19
Fast SEM not supported for multiple sub blocks
For SEM with multiple sub blocks, fast SEM is not available. If more than 1 sub block is
defined and a standard is loaded which contains an active fast SEM setting, this setting
is disabled.
For more information on multi-SEM measurements see chapter 5.6.4.5, "SEM with
Multiple Sub Blocks ("Multi-SEM")", on page 205.
Consequences
When the "Fast SEM" mode is activated, the ranges for which these criteria apply are
displayed as one single range. The sweep time is defined as the sum of the individual
sweep times, initially, but can be changed.
If "Symmetrical Setup" mode is active when "Fast SEM" mode is activated, not all
sweep list settings can be configured symmetrically automatically (see also "Symmetric
Setup" on page 215).
Any other changes to the sweep settings of the combined range are applied to each
included range and remain changed even after deactivating "Fast SEM" mode.
Example
Fig. 5-33: Sweep list using Fast SEM mode
In figure 5-33, a sweep list is shown for which Fast SEM is activated. The formerly 5
separately defined ranges are combined to 2 sweep ranges internally.
Spectrum Emission Mask (SEM) Measurement
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