User Guide

Before you begin
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If you have the demo CD-ROM
OrCAD demo CD-ROM
The OrCAD demo CD-ROM has the following limitations
for PSpice:
• circuit simulation limited to circuits with up to 64
nodes, 10 transistors, two operational amplifiers or 65
digital primitive devices, and 10 transmission lines
(ideal or non-ideal) with not more than 4 pairwise
coupled lines
• device characterization using the Model Editor
limited to diodes
• stimulus generation limited to sine waves (analog)
and clocks (digital)
• sample library of approximately 39 analog and 134
digital parts
• displays only simulation data created using the demo
version of the simulator
• PSpice Optimizer limited to one goal, one parameter
and one constraint
• designs created in Capture can be saved if they have
no more than 30 part instances
Pspug.book Page xxviii Wednesday, November 11, 1998 1:14 PM