Agilent Technologies 89410A Operator's Manual page 145

Using Adaptive Equalization (Options AYA and AYH)
In this example, traces A and B
show the default frequency
response and impulse response of
the equalization filter. By
default, the equalization filter has
a unit impulse response.
This signal is difficult to
demodulate due to linear
distortion. The next task uses
equalization to compensate for
the linear distortion.
Demodulated signal and equalization filter displays
12-5