R&S ZNB Series User Manual page 280

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R&S ZNB/ZNBT
N rows
Figure 4-34: S-matrix replication
By default, the firmware simulation applies InputBufferGroupSimulation.s4p to
all channels in all setups.
For each setup in the firmware simulation, you have three possibilities to define and
refine the simulated DUT.
1. Load setup-specific simulation data from file.
For the related setup, they take precedence over the default simulation data.
If the number of physical test ports is larger than the "rank" of the S matrix the firm-
ware loads from the specified file (N for sNp files), the previously mentioned
cation logic
2. Load channel-specific simulation data from file.
For the related channel, they take precedence over the data of the setup-specific
and default simulation data.
Again, the previously mentioned replication logic applies.
3. Load port- and channel-specific S-parameter data from file.
For the related ports, they take precedence over channel-specific, setup-specific,
and default simulation data.
To determine S
"closest" frequencies of the S-parameter trace ultimately loaded for S
4.7.31.2 Simulation noise
The firmware simulation allows you to add noise to the simulated data, i.e. a random
small value added to the simulation data loaded from file. This random value changes
every sweep and every sweep point in time, with the effect of seeing more "realistic"
fluctuating traces, in particular in continuous sweep mode.
User Manual 1173.9163.02 ─ 62
N columns
S S S
S S S
S S S
applies.
at a channel frequency, the firmware interpolates between the two
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Concepts and features
Optional extensions and accessories
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repli-
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