User`s guide

1
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10 Thin
g
s You Need to Know
What is the Parts Utilit
y
?
The Parts utility is a model extractor that generates model
definitions for PSpice A/D to use during simulation. All the
Parts utility needs is information about the device found in
standard data sheets. As you enter the data sheet information, the
Parts utility displays device characteristic curves so you can
verify the model-based behavior of the device. When you are
finished, the Parts utility automatically creates a symbol for the
model so you can use the modeled part in your schematic
immediately.
What is Probe?
Probe is a graphical results analyzer. When PSpice A/D
completes the simulation, Probe plots the waveform results so
you can visualize the circuit’s behavior and determine the
validity of your design.
Perform post-simulation anal
y
sis of the
results
This means you can plot additional information
derived from the waveforms. What you can plot depends on the
type of analyses you run. Bode plots, phase margin, derivatives
for small-signal characteristics, waveform families, and
histograms are only a few of the possibilities. You can also plot
other waveform characteristics such as rise time versus
temperature, or percent overshoot versus component value.
Pinpoint desi
g
n errors in di
g
ital circuits
When
PSpice A/D detects setup and hold violations, race conditions,
or timing hazards, Probe displays detailed message text along
with corresponding waveforms. Probe also helps you locate the
problem in your schematic.
not
included
in:
Taken to
g
ether, PSpice A/D
simulation and Probe waveform
analysis is an iterative process.
After analyzin
g
simulation results
usin
g
Probe, you can refine your
schematic and simulation setup
parameters and then run a new
simulation and Probe analysis.