User Guide

Chapter 12 Monte Carlo and sensitivity/worst-case analyses
304
5 Click OK.
To display a histogram for the 1 dB bandwidth
1 From PSpice’s Plot menu, choose Axis Settings.
2 Select the X Axis tab.
3 In the Processing Options frame, select the
Performance Analysis check box.
4 Click OK.
The histogram display appears. The Y axis is the
percent of samples.
5 From the Trace menu, choose Goal Functions.
6 Choose Bandwidth.
7 Click Eval.
8 Enter VDB(OUT) in the Name of trace to search text
box.
9 Enter 1 in the db level down for bandwidth calc text
box.
10 Click OK, then click Close to view the histogram.
To change the number of histogram divisions
1 From the Tools menu, choose Options.
2 In the Number of Histogram Divisions text box,
replace
10 with 20.
3 Click OK.
The histogram for 1 dB bandwidth is shown in Figure 82.
For in
f
ormation a
b
out per
f
ormance
analysis, see RLC filter example
on
page 11-274.
You can a
l
so
d
isp
l
ay t
h
is
h
istogram
b
y
using the performance analysis wizard to
display Bandwidth (VDB(OUT) , 1).
Pspug.book Page 304 Wednesday, November 11, 1998 1:14 PM