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This module provides a brief introduction to integrated design with Multisim and other National Instruments products. Multisim is fully featured SPICE schematic capture and simulation tool used for circuit design, simulation, and in combination with Ultiboard for layout of custom PCBs.

Integrated design with other national instruments products


National Instruments LabVIEW is a graphical programming environment that can be used to automate test andmeasurement functions, for the purpose of testing and validating designs. Multisim data saved in .LVM or .TDM format can be easilyloaded into LabVIEW using express Virtual Instrument (VI) technology. Simulation data can then be overlaid on top of measuredresults to quickly and easily verify designs.

Loading .lvm and .tdm data files

To load Multisim simulated data that were saved in a .LVM or .TDM file, use the Read from Measurement FileExpress VI. This VI is located in the Programming/File IOpalette. For help on this file, consult the LabVIEW help file. The ExpressVI can be configured to read either .LVM or .TDM files.

Read from Measurement File Express VI

Note: The following only applies to .LVM files.The EOF? output terminal of the Express VI indicates true ifthere is more data contained in the .LVM file. This value is especially useful when reading data that were saved from a BodeAnalysis, or from any plot window with more than one graph display. Simply place the Read From Measurement File Express VI into a whileloop, with the EOF? output terminal wired to the exit condition terminal.

Note: The following only applies to .TDM files. To load .TDM files into LabVIEW which contain multiplegraphs, lower level storage express VIs are required. Figure 2 below gives a demonstration of how one might load multiple graphsfrom a .TDM file.

Loading Multiple Graphs from a .TDM File

Labview based virtual instruments in multisim

For further information on LabVIEW based Virtual Instruments in Multisim, consult the LabVIEW VirtualInstruments text in Section II.


SignalExpress introduces an innovative approach to configuring your measurements using intuitivedrag-and-drop steps that do not require code development. Unlike traditional benchtop measurement tools, SignalExpress combines theoptimal balance of measurement functionality and ease-of-use to assist designers in streamlining a variety of applications:

  • Design modeling.
  • Design verification.
  • Design characterization.
  • Device validation.
  • Automated test troubleshooting.

Loading multisim data into signalexpress

To load simulated data into SignalExpress, simply use the Load from LVM step, select Add Step/Analog/Load and save Signals/Load from LVM. Choose the file name to load, andselect the traces to import. Use the Domain field to choose from either Time, or Frequency data. Click close and run theSignalExpress workbench file to load the Multisim data.

SignalExpress Load from LVM Step


National Instruments ELVIS is an ideal companion to any electronics lab that uses Multisim. ELVIS providesa breadboard prototyping environment, with built-in instruments including a Function Generator, Digital Multimeter (DMM),Oscilloscope, and Variable Power Supplies. The breadboard is detachable, allowing students to work on their projects and labsindependently of the ELVIS unit.

ELVIS provides LabVIEW-based software for interacting with the Virtual Instruments. These instruments can bemodified to load Multisim data for rapid comparison of simulated and measured data.

NI ELVIS Bode Analysis Comparing MultiSim Data

Questions & Answers

what is math number
Tric Reply
x-2y+3z=-3 2x-y+z=7 -x+3y-z=6
Sidiki Reply
Need help solving this problem (2/7)^-2
Simone Reply
what is the coefficient of -4×
Mehri Reply
the operation * is x * y =x + y/ 1+(x × y) show if the operation is commutative if x × y is not equal to -1
Alfred Reply
An investment account was opened with an initial deposit of $9,600 and earns 7.4% interest, compounded continuously. How much will the account be worth after 15 years?
Kala Reply
lim x to infinity e^1-e^-1/log(1+x)
given eccentricity and a point find the equiation
Moses Reply
12, 17, 22.... 25th term
Alexandra Reply
12, 17, 22.... 25th term
College algebra is really hard?
Shirleen Reply
Absolutely, for me. My problems with math started in First grade...involving a nun Sister Anastasia, bad vision, talking & getting expelled from Catholic school. When it comes to math I just can't focus and all I can hear is our family silverware banging and clanging on the pink Formica table.
I'm 13 and I understand it great
I am 1 year old but I can do it! 1+1=2 proof very hard for me though.
Not really they are just easy concepts which can be understood if you have great basics. I am 14 I understood them easily.
find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
I know this work
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
If f(x) = x-2 then, f(3) when 5f(x+1) 5((3-2)+1) 5(1+1) 5(2) 10
how do they get the third part x = (32)5/4
kinnecy Reply
make 5/4 into a mixed number, make that a decimal, and then multiply 32 by the decimal 5/4 turns out to be
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
okay, so you have 6 raised to the power of 2. what is that part of your answer
I don't understand what the A with approx sign and the boxed x mean
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
I'm not sure why it wrote it the other way
I got X =-6
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
oops. ignore that.
so you not have an equal sign anywhere in the original equation?
is it a question of log
I rally confuse this number And equations too I need exactly help
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Commplementary angles
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A soccer field is a rectangle 130 meters wide and 110 meters long. The coach asks players to run from one corner to the other corner diagonally across. What is that distance, to the nearest tenths place.
Kimberly Reply
Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
August Reply
What is the expressiin for seven less than four times the number of nickels
Leonardo Reply
How do i figure this problem out.
how do you translate this in Algebraic Expressions
linda Reply
why surface tension is zero at critical temperature
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
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Source:  OpenStax, Introduction to multisim schematic capture and spice simulation. OpenStax CNX. Sep 26, 2006 Download for free at http://cnx.org/content/col10369/1.3
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