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NI Multisim Professional

Schematic capture with a full analogue and mixed signal simulator behind it, so a circuit can be drawn, probed, and measured with virtual instruments long before anything is soldered.

Version 14.3 1.86 GB Windows 10 / 11 (64-bit) Updated 1 week ago

Overview

What this release is

Multisim is what happens when a simulation engine is wrapped in an interface built for people who think in schematics rather than netlists. You draw the circuit the way you would draw it on paper, drop a virtual oscilloscope onto the canvas, and probe the nodes directly. The underlying engine is a full analogue and mixed signal simulator, but very little of that machinery is pushed at you.

The virtual instrument panel is the part that makes it stick in teaching and in prototyping alike. Oscilloscopes, function generators, spectrum analysers, logic analysers, network analysers, and multimeters all appear as instruments you connect to the schematic with wires. The behaviour matches the physical equipment closely enough that moving between the two requires no mental translation.

Analysis coverage goes well past a transient plot. DC and AC sweeps, noise analysis, distortion, Monte Carlo runs across component tolerances, worst case analysis, temperature sweeps, and Fourier decomposition are all available, and the results land in a graphing window that can hold several traces from different runs for comparison.

The component database is large and, more usefully, it is accurate. Real manufacturer parts carry real models, so a simulation using a specific operational amplifier reflects that part rather than an idealised stand in. Custom components can be added with the model editor when a part is missing.

Schematics hand off to the board layout side cleanly, so a validated design moves to a physical layout without redrawing it. The professional configuration in this build unlocks the full component database, the complete analysis set, and the unlimited circuit size that the education tier caps.

Feature set

What you get

Virtual instruments

Oscilloscopes, generators, analysers, and meters that connect to the schematic and behave like the bench equipment they mirror.

Full analysis suite

Transient, DC and AC sweep, noise, distortion, Monte Carlo, worst case, temperature, and Fourier analysis.

Manufacturer component models

Real parts with real models rather than idealised generics, so results reflect the component you intend to use.

Mixed signal simulation

Analogue and digital sections simulate together in one run, including microcontroller behaviour on supported parts.

Layout handoff

Validated schematics transfer to board layout without being redrawn.

No circuit size limit

The professional configuration removes the component and node caps of the lower tiers.

Changes in this build

What changed

Component database expanded with a large batch of current manufacturer parts
Faster convergence on circuits with tightly coupled feedback loops
Graphing window reworked with better multi trace handling and cursor readouts
Improved import of netlists produced by other simulation packages
Fixed the analysis failure on schematics containing nested hierarchical blocks

Installation

How to install it

Turn off real time protection before extracting, since the setup routine patches its own components.
Extract to a short path on a drive with at least 6 GB free.
Run the installer as administrator and pick the professional feature level when asked.
Apply the licensing step from the included folder before the first launch.
Open the program and confirm the title bar shows the professional edition rather than the education tier.

Hardware

System requirements

Processor	Intel or AMD, 64-bit, 2 GHz or faster
Memory	4 GB minimum, 8 GB recommended for large mixed signal runs
Graphics	Any adapter with an OpenGL capable driver
Storage	6 GB free space
Display	1920 x 1080 recommended, instruments take considerable screen space
System	Windows 10 version 21H2 or Windows 11

Package

Release information

Title	NI Multisim Professional
Version	14.3
Developer	National Instruments
Category	CAD & 3D
Platform	Windows 10 / 11 (64-bit)
Package size	1.86 GB
Interface languages	English, German, Japanese, Simplified Chinese
Release identifier	BS-14300001
Listed	4 years ago
Last rebuilt	1 week ago
Total downloads	193,084

Questions

Before you start

Is the component limit removed?

Yes. The professional configuration has no cap on components or nodes, unlike the education tier.

Can custom parts be added?

Yes, through the model editor. You can enter parameters manually or import a model supplied by a manufacturer.

Does it simulate microcontrollers?

On supported parts, yes, with the code running against the surrounding analogue circuit in the same simulation.

Why does a simulation fail to converge?

Usually a floating node or a missing ground reference. Check the connectivity before adjusting the solver tolerances.