User Guide

File and Pro
g
ram Relationships B
-3
Typically, you capture your design using Schematics and use
this as the basis for optimization with the PSpice Optimizer.
Each schematic produces a single circuit file
(
design_name .cir) which is created when either you:
• select Create Netlist or Simulate in the Analysis menu, or
• select Run Optimizer in the Tools menu.
In the latter case, Schematics also produces:
• An optimization file ( design_name .opt) which
contains optimization settings describing parameters,
specifications, and other options. The PSpice Optimizer
adds to and keeps the information in this file up-to-date.
• A parameters file ( design_name .par) which contains
parameter values as of the last optimization iteration. The
PSpice Optimizer keeps the information in this file up-to-
date.
Note
The circuit file produced by Schematics
automatically references the .par file. If you are
enterin
g
your desi
g
n usin
g
a circuit file instead of a
schematic, add a .inc (“include”) command namin
g
the .par file. See “
Appendix C, Optimizing a Netlist-
Based Design ” for details.