User`s guide

Usin
g
the Model Editor 4
-33
Runnin
g
the Model Editor from
the Schematic Editor
If you want to:
• define tolerances on model parameters for statistical
analyses,
• test behavior variations on a part, or
• refine a model before making it available to all schematics,
then run the model editor from the schematic editor in
Schematics.
This means editing models for part instances on your schematic.
When you select a part instance and edit its model, the schematic
editor automatically creates an instance model that you can then
change.
What is an instance model?
An instance model is a copy of the symbol’s original model. The
copied model is local to the design. You can customize the
instance model without impacting any other schematic that uses
the original symbol from the library.
When the schematic editor creates the copy, it assigns a unique
name that is by default:
original_model_name-Xn
where n is <blank 1 | 2 | ... > depending on the number of
different instance models derived from the original model for
the current schematic.
You can also use the model
editor to view the syntax for a
model definition. When you are
finished, be sure to click Cancel
so the schematic editor does not
create an instance model.
For more information on instance
models, see
Reusing Instance
Models on page 4-39.