User Guide
Chapter 8 Preparing Your Design for Simulation
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4 With the SUBPARAM part still selected, from the Edit 
menu, choose Attributes.
5 In the Attributes dialog box, define the names and 
default values for the attributes that can be changed on 
an instance-by-instance basis.
6 In the top-level schematic, use the Attributes dialog 
box to edit the attributes of the hierarchical part or 
block that references the subcircuit (child) schematic 
so they match the attributes you defined in Step 5.
Any part in the subcircuit (child) schematic can reference 
the attributes in its TEMPLATE. The PSpice subcircuit 
mechanism supports parameterizing: 
• constants specified on device statements
• model parameters
• expressions consisting of constants
• parameters
• functions
Starting the Simulator
You can start the simulator directly from PSpice 
Schematics by clicking on the Simulate button on the 
toolbar, or selecting Simulate from the Analysis menu.
For more information, refer to the Starting Simulation 
section of the Setting Up Analyses and Starting Simulation 
chapter in your PSpice user’s guide.










