# The new version of SimOne 2.4 is now available

**What’s new in SimOne 2.4**

**External libraries support**

All included external libraries — SPICE-libraries and SimOne schematic-files containing subcircuits — are now shown in “Place” menu. Any component of the libraries is available for placing to the schematic.

**Events**

SimOne can track different events happening during circuit simulations, namely

- Local minimum of an expression is found,
- Local maximum of an expression is found,
- Certain value of an expression is reached (optional: from a specified side),
- Certain value of a curve slope is reached (optional: from a specified side),
- Inflection point is found,
- Any specified condition (IF expression) is satisfied.

An event can be set to take one of the following actions as it happens:

- Pause simulation,
- Stop simulation,

Just write the event time into the Log.

**Event window**

**Statistical analysis in Multi-variant analyses**

**Monte-Carlo analysis/Worst case analysis** is added to multi-variant analyses. It allows analyzing the circuit with one or more its parameters distributed in some range. For any parameter of a single element, component model or signal source or a global parameter the distribution range and law can be set.

The statistical analysis runs multiple simulations with different values of the chosen parameters. As a result of the analysis families of desired graphs and histograms of studied characteristics are presented.

**SPICE-format**

.MC <number of runs> <analysis type> < expression1> <expression2> … <measurement1> <measurement2>…

**Examples**

.MC 100 tran V(out) I(Rн) Vmax Imax

.MC 10 ac db(V(Rн)) Band1

.MC 100 dc I(Rн) Imax

**Monte-Carlo Analysis tab of the Simulation window**

**Histograms**

Histograms are an alternative way of presenting simulation results and show the numerical values of plots distribution by chosen intervals.

**Add Histogram window**

**Histogram view**

**.WAV-files**

Signals can now be set in the form of sound (as .wav-files). Plots as well can be exported as .wav-files and played directly in SimOne.

**Mathematical expressions**

- Random value generators with different distributions, and Integral transforms are added.

**Fixes**

- Bug with PWL-signals
- Etc.