PSpice User Guide

PSpice User Guide

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PSpice User Guide Analyzing waveforms October 2019 709 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. markers are added later on, every thing works fine, since only one Plot Window Template gets added at a time. Limiting waveform data file size When PSpice performs a simulation, it creates a waveform data file. The size of this file for a transient analysis is roughly equal to: (# transistors)·(# simulation time points)·24 bytes The size for other analysis types is about 2.5 times smaller. For long runs, especially transient runs, this can generate waveform data files that are several megabytes in size. Even if this does not cause a problem with disk space, large waveform data files take longer to read in and take longer to display traces on the screen. You can limit waveform data file size by: ■ placing markers on your schematic before simulation and having PSpice restrict the saved data to these markers only ■ excluding data for internal subcircuits ■ suppressing simulation output Limiting file size using markers One reason that waveform data files are large is that, by default, PSpice stores all net voltages and device currents for each step (for example, time or frequency points). However, if you have placed markers on your schematic prior to simulation, PSpice can save only the results for the marked wires and pins. To limit file size using markers 1. From Capture's PSpice menu, choose Edit Simulation Profile. The Simulation Settings dialog box appears.

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