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Measurements and Results

R&S

FSW

245User Manual 1173.9411.02 ─ 43

Fast SEM not supported for multiple sub blocks

For SEM with multiple sub blocks, fast SEM is not available. If more than one 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 7.6.4.5, "SEM with

Multiple Sub Blocks ("Multi-SEM")", on page 246.

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 "Symmetri-

cal Setup" on page 256).

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

Figure 7-45: Sweep list using Fast SEM mode

In Figure 7-45, a sweep list is shown for which Fast SEM is activated. The formerly five

separately defined ranges are combined to two sweep ranges internally.

Spectrum Emission Mask (SEM) Measurement

R&S FSW Series User Manual

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