PSpice User Guide

PSpice User Guide

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PSpice User Guide Analyzing waveforms October 2019 674 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. Overview of waveform analysis You can use the waveform analysis features of PSpice to visually analyze and interactively manipulate the waveforms generated from the simulation data. 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. 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. With waveform analysis you can: ■ View simulation results in multiple Probe windows ■ Compare simulation results from multiple circuit designs in a single Probe window ■ Display simple voltages, currents, and noise data ■ Display complex arithmetic expressions that use the basic measurements ■ Display Fourier transforms of voltages and currents, or of arithmetic expressions involving voltages and currents ■ For mixed analog/digital simulations, display analog and digital waveforms simultaneously with a common time base ■ Add text labels and other annotation symbols for 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.

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