![]() ![]() Eachmouse click creates a new equation instance each consisting of a variable number of mea-surement expressions. You can now place the equation symbol by mouse click anywhere in the schematic. Using menu item “Insert”→ ”Insert equation”įigure 1: Entering a new measurement expression via equation icon.Using the equation icon in the “Tools” bar (see fig.The related equations can be entered into the schematic editor by the followingmeans: Those new datasets are accessible in the data display tab aftersimulation. Measurement expressions generate new datasets by function or operator driven evaluationof simulation results. It gives a brief description ofthe overall syntax of those expressions. The chapter describes the usage of mathematical expressions for post processing simulationdata in “Qucs”, how to enter formulas and modifying them. Finally, the Index contains an alphabetical list of allfunctions. The core of the document, a detailed compilation of all ”Qucs”functions divided into different categories, is presented in chapter “Math Functions” andchapter “Electronics Functions”. Chapter“Functions Syntax and Overview” introduces the basic syntax of functions and a categoricallist of all functions available. Also the data types supported are specified here. ![]() If you are not familiar with the way how to enter those formulas, please refer to chapter“Using Measurement Expressions”, which points out the possibilities to create and changemeasurement expressions. The ”Qucs” measurement functions offer a rich set of data manipulationtools. Examples would be the conversion of a simulated voltage waveformfrom volts to dBV, the root mean square value of that waveform or the determination ofthe peak voltage. Measurement expressions come into play whenever the results of a ”Qucs” simulation runneed post processing. This manual describes the measurement expressions available in ”Qucs”, the ”Quite Uni-versal Circuit Simulator”. ![]()
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