User`s guide

Probe Performance Analysis 2
-31
9
Click Next> or Finish. Probe displays a plot of the 3 dB
bandwidth vs. Rval.
10
Change the x-axis to log scale.
a
From the Plot menu, select X Axis Settings.
b
In the Scale frame of the X Axis dialog box, choose
Log.
c
Click OK.
To plot
g
ain vs. Rval manuall
y
1
From the Plot menu, select Add Y Axis.
2
From the Trace menu, select Add.
3
In the Functions and Macros frame, change to the Goal
Functions list, and then click the Max(1) goal function.
4
In the Simulation Output Variables list, click V(out).
5
In the Trace Expression text box, edit the text to be
Max(Vdb(out)), then click OK. Probe displays gain on
the second y-axis vs. Rval.
Figure 2-25 shows the final performance analysis plot of 3 dB
bandwidth and gain in dB vs. the swept input resistance value.
Fi
g
ure 2-25
Performance Analysis Plots of Bandwidth and
Gain vs. Rval
Double-click the x-axis.
or press I
The Trace list includes
g
oal
functions only in performance
analysis mode when the x-axis
variable is the swept parameter.