orcad pspice User Manual
Chapter 13 Analyzing waveforms
320
Overview of waveform analysis
You can use the waveform analysis features of PSpice to
visually analyze and interactively manipulate the
waveform data produced by circuit simulation.
visually analyze and interactively manipulate the
waveform data produced by circuit simulation.
PSpice uses high-resolution graphics so you can view the
results of a simulation both on the screen and in printed
form. On the screen, waveforms appear as plots displayed
in Probe windows within the PSpice workspace.
results of a simulation both on the screen and in printed
form. On the screen, waveforms appear as plots displayed
in Probe windows within the PSpice workspace.
In effect, waveform analysis is a software oscilloscope.
Performing a PSpice simulation corresponds to building
or changing a breadboard, and performing waveform
analysis corresponds to looking at the breadboard with an
oscilloscope.
Performing a PSpice simulation corresponds to building
or changing a breadboard, and performing waveform
analysis corresponds to looking at the breadboard with an
oscilloscope.
With waveform analysis you can:
•
View simulation results in multiple Probe windows
•
Compare simulation results from multiple circuit
designs in a single Probe window
designs in a single Probe window
•
Display simple voltages, currents, and noise data
•
Display complex arithmetic expressions that use the
basic measurements
basic measurements
•
Display Fourier transforms of voltages and currents,
or of arithmetic expressions involving voltages and
currents
or of arithmetic expressions involving voltages and
currents
•
Add text labels and other annotation symbols for
clarification
clarification
PSpice generates two forms of output: the simulation
output file and the waveform data file. The calculations
and results reported in the simulation output file act as an
audit trail of the simulation. However, the graphical
analysis of information in the waveform data file is the
most informative and flexible method for evaluating
simulation results.
output file and the waveform data file. The calculations
and results reported in the simulation output file act as an
audit trail of the simulation. However, the graphical
analysis of information in the waveform data file is the
most informative and flexible method for evaluating
simulation results.
Pspug.book Page 320 Wednesday, November 11, 1998 1:14 PM