User Guide

Testin
g
Performance 6
-5
Testin
g
Performance
Initial performance has already been measured for the active
filter ensuring that the design simulated as expected, that current
values for the goals were calculated, and that initial values were
updated. Initial performance calculated to:
Calculatin
g
Derivatives
To estimate performance effects with small changes in
parameters (or specifications), the PSpice Optimizer uses
derivatives of each specification with respect to each of the
parameters.
To calculate the derivatives
1
From the Tune menu, select Update Derivatives.
The message
Updating Derivatives appears in the
status bar while this takes place.
Goal
Current/Initial
Value
Tar
g
et Value
Fc 8.322 Hz 10 Hz
BW 0.7122 Hz 1 Hz
Gain 14.81 10
To remeasure performance,
select Update Performance from
the Tune menu.