User Guide

The Stimulus Editor utility
257
9 Move the cursor to (200ns, 1) and click the left mouse
button. This adds the point. Notice that there is
automatically a point at (0,0). Ignore it for now and
continue to add a couple more points to the right of the
current one.
10 Click-right to stop adding points.
11 From the File menu, choose Save.
If you make a mistake or want to make any changes,
reshape the trace by dragging any of the handles to a new
location. The dragged handle cannot pass any other
defined data point.
To delete a point, click its handle and press X.
To add additional points, either choose Add Point from
the Edit menu, press A+A, or click the Add Point
toolbar button.
At this point you can return to Capture, edit the current
stimulus, or go on to create another.
Example: sine wave sweep
1 Open an existing schematic or start a new one.
2 Place a VSTIM part on your schematic.
3 To name the stimulus, double-click the
implementation property and type
Vsin.
4 Click the VSTIM part to select it.
5 From the PSpice menu, choose Edit Stimulus to start
the Stimulus Editor.
6 Define the stimulus parameter for amplitude:
a From the New Stimulus dialog box, choose Cancel.
b From the Tools menu, choose Parameters.
c Enter
AMP=1 in the Definition text box, and click
OK.
d From the Stimulus menu, choose New or click the
New Stimulus button in the toolbar.
T
h
is examp
l
e creates a 10
k
sine wave wit
h
the amplitude parameterized so that it can
be swept during a simulation.
Pspug.book Page 257 Wednesday, November 11, 1998 1:14 PM