Fixed Poles And Zeros - HP 3563A Operating Manual

Fixed Poles and Zeros

When poles or zeros are fIxed (using the
and includes them in the next fIt. Any pole or zero manually added to the curve-fit table is also
tagged as f IXed. A fixed term is indicated by an arrow to the right of the term. The f IXed line feature
allows the results of one curve fit to be included in the results of another. For example, a curve fit
could be performed on a narrow region around a resonance. The resonant pole from this fIt would
be f IXed and another curve fit performed on the entire frequency span. Pole and zero locations
found in the first fit and set as f IXed are retained and used in the second fit. The
softkey allows a f IXed pole or zero to be replaced in subsequent curve fits.
FIX L1NE#
key), the curve fItter assumes they are correct
Curve
Fit
Fixed Poles and Zeros
UNFIX L1NE#
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