User`s guide

350 Agilent E5505A User’s Guide
15 Advanced Software Features
There are four different curves available for this graph:
a “Measured” loop suppression curve (Figure 274 on page 350)—this is the
result of the loop suppression measurement performed by the E5505A
system.
b “Smoothed” measured suppression curve (Figure 275 on page 351)—this
is a curve-fit representation of the measured results, it is used to
compare with the “theoretical” loop suppression.
c “Theoretical” suppression curve (Figure 276 on page 351)—this is the
predicted loop suppression based on the initial loop parameters
defined/selected for this particular measurement (kphi, kvco, loop
bandwidth, filters, gain, etc.).
d “Adjusted” theoretical suppression curve (Figure 277 on page 352
through Figure 279 on page 353) —this is the new “adjusted” theoretical
value of suppression for this measurement. It is based on changing loop
parameters (in the theoretical response) to match the “smoothed”
measured curve as closely as possible.
.
Figure 274 Measured loop suppression curve