Discrete RMS Value PLECS 1.5 Online Help Discrete RMS Value Purpose Calculate the root mean square (RMS) value of the input signal. Library Extras/Discrete Analysis Description This block calculates the RMS value of a periodic input signal based on discrete samples. The sample time and the number of samples can be specified. The fundamental frequency of the running window is The Discrete RMS Value block is implemented with the Discrete Mean Value block. Note  This block is only available for Matlab 7.0 or newer. Parameters and Dialog Box Initial condition The initial condition describes the input signal before simulation start. This parameter may either be a scalar or a vector matching the number of samples. The default is 0. Sample time The time interval between samples. Number of samples The number of samples used to calculate the RMS value.