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Easily Overlooked Features - Summer 2009
This section is designed to highlight one or two features per issue that may be overlooked because they
are not made visually obvious with a toolbar button.
Accumulate Plots option
The Accumulate Plots option is an option that is available within the Transient, AC, DC, and Distortion
Analysis Limits dialog boxes. When enabled, this option accumulates waveforms or curves that result from
editing the circuit while still in the analysis mode. It provides a simple method to compare the results
of a circuit before and after editing. There is no limit to the number of analysis runs that can be
accumulated. Exiting the analysis mode clears all of the data.
The sample circuit PRLC.CIR is used to demonstrate how this option works. Once the circuit is loaded,
the Transient Analysis command is selected under the Analysis menu. In the Transient Analysis Limits
dialog box, the Accumulate Plots option is enabled. The analysis is then run. While still in the
analysis, the circuit window is activated, and the inductor value is changed to 2uH. The circuit is
simulated again. Both simulations are now available in the plot window for easy comparison as shown
in the figure below.
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The Dynamic Auto Run option in the Preferences - Options - Analysis section forces a new simulation
run every time an edit is made in the circuit while in an analysis. If more than one edit needs to
be made prior to a simulation, this option needs to be disabled. In this case, once all the edits are
made, the simulation would need to be manually started by the user by hitting F2 or using the Run
command.
The Clear Accumulated Plots under the Scope menu will clear all of the prior runs the next time a
simulation is started. The toolbar icon for this command is the following:
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