Mydaq y multisim

Para usar la mydaq con multisim para mediciones en tiempo real, ¿se debe "dibujar" el circuito en multisim o sólo utilizaria las herramientas que multisim ofrece para poder vidualizar las mediciones?

Hola SIQ,
Lo siento, no hablo italiano, pero te recomiendo publicar tu foro en la siguiente página: http://forums.ni.com/t5/Forum-Italiano-sui-Prodotti-NI/bd-p/7170
Ciao SIQ,
Mi dispiace, non parlo italiano, ma vi consiglio di inviare il vostro forum alla pagina seguente: http://forums.ni.com/t5/Forum-Italiano-sui-Prodotti-NI/bd-p/7170
Hi SIQ,
I am sorry I don´t speak italian; however, you can post your forum question in the next link: http://forums.ni.com/t5/Forum-Italiano-sui-Prodotti-NI/bd-p/7170
Luis Fernando
National Instruments Cono Sur
Ingeniería de Campo y Consultoría
http://chile.ni.com/

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NEW – Multisim Touch on the iPad

The Multisim Touch for the iPad is an all new product developed specifically for students, educators, and engineers that need powerful simulation and intuitive design tools available on their iPad. This native SPICE simulation and design app allows users to quickly build circuits with a library of common devices and visualize performance in an intuitive graphing interface. With this tool users are able to begin designing circuits whenever inspiration occurs.
Multisim Touch utilizes DropboxTM and e-mail connectivity to allow designs that begin on the tablet to be shared with other Multisim Touch users or exported to the desktop edition of Multisim for advanced design and verification capabilities only available on the PC. Essentially, Multisim Touch is a portable extension of the advanced power of Multisim on the desktop.
Download the app and learn more at: ni.com/multisim/mobile
Additional Resources
Multisim Touch Getting Started Videos
Courseware with Multisim Touch and myDAQ
Multisim Touch Getting Started Circuits

Hi Samiashi,
Thanks for the feedback. For graph export you can take screenshots from your iPad or you can export the measurements to a CSV that you can email. It's in the left hand side menu of all graphs.
I took some screenshots that show the export feature:

How Multisim, ELVIS 2+ Board, and Labview All Connect

My school recently obtained some ELVIS 2+ boards and I have been tasked with figuring out exactly what they can do and how we can incorporate them into the curriculum as part of my work study. Now I have all the basics down for building a circuit on the ELVIS, getting measurements and controlling inputs on the computer etc. I would like to delve deeper into what the full potential of this device is by integrating it with multisim and Labview. My question is, is it possible to construct a circuit (or partial circuit) in multisim and then send the output of said circuit to the ELVIS board where it could feed into an actual circuit. For example, could I build a voltage supply virtually in multisim, and output the voltage to a specific pin on the ELVIS board where I could wire it into my built circuit? Along the same lines, could I build a circuit on the board and send the output of the circuit to a program in Labview? Is this board capable for such things or is its connections to labview and multisim just used as a comparison tool for real life readings and simulated readings? What is the full potential of this board?

Hello,
Glad to hear about you work with NI ELVIS. The integration between ELVIS and Multisim is limited to running circuit simulations and then comparing results with the real circuit, in other words, you can compare simulated vs real measurements; this is a great approach to circuits education.
Now, if you want to have more control of the inputs/outputs available on NI ELVIS, then LabVIEW is the perfect fit. In LabVIEW you can use the NI ELVISmx Express VIs to configure settings for all the instruments. Furthermore, NI ELVIS is supported by the NI-DAQmx driver, therefore you can use the NI-DAQmx functions to acquire signals from the analog inputs, generate signals in the analog outputs, access the digital I/O and program general counter/timing functionality.
Visit the NI ELVIS & NI myDAQ Instruments and Applications community to learn more about the integration between ELVIS and LabVIEW; in this page you will find some ready-to-use applications.
Hope this helps!
Fernando D.
National Instruments

Running Multisim with Labview

Hey,
I am trying to convert a series of student labs for a dynamic systems course to run on a newer, better setup. Previously, the lab I am working on took input from a sensor, fed that input through an analog circuit, and fed the output from that circuit into a Labview VI. My question is, can that be done using a Multisim simulation instead of a physical circuit? I have found volumes regarding running Labview VIs in Multisim, but nothing regarding a VI taking input from a Multisim circuit. If this can be done, what configuration would you suggest?

bjw5,
It is likely due to the fact that some of the vi.lib or DAQ driver libraries that you need to link into the VI are missing in the build of your Multisim LabVIEW .llb.   If Multisim cannot locate missing subVIs (from vi.lib or elsewhere) Multisim will not load the LabVIEW VIs that you have built.   Sometimes you need to include these vi.lib subVIs (usually contained in a LabVIEW library - lvlib) in the project build (by default all vi.lib functions are excluded).   When Multisim loads, it loads in the appropriate base level LabVIEW functionality only - this includes most LabVIEW functions, basic math, etc - however any advanced measurments or additional toolkits or drivers need to be included in the .llb build or the support folder directly.
How do you know? In your LabVIEW project, if you click on the 'Dependencies' +/- twisty you will see any subVIs or .lvlibs which contain subVIs that may be used in your Multisim VI application ...
Here is a sampling of a recent project that I used that included some advanced measurement VIs in LabVIEW.   I believe the only ones included by default in Multisim are the 'Base' lvlibs (which does include most of the LV functionality, but for my application advanced measurements were needed).
If you DO have any that say 'Pro' in the name or any hardware driver level functions or subVIs, you'll need to do one of two things:
1. Easiest method - Include all vi.libs in the Source Distribution under 'Additional Preferences'
Basically change this ....
to this...
Note that it will take some additional time to build (since when LabVIEW builds your llb it will search all of the lvlibs for VIs that it thinks are in your application and then remove the ones that are not)... but your VI should then run in Multisim...
2.   Advanced method -> explicitly add the subVIs or lvlibs to the top level project and make them 'always included' in the Source Distribution 'Source Files' options.
Here you can explicitely call the lvlibs to be included in your build and then take out functions you don't need (but you may not know what subVIs are used if they are embedded in lvlibs that you're not aware you are using (such as the case with Express VIs) ).   You also have to be careful since I have found out the hard way that menus within the lvlibs cannot be included in .llbs, so you have to exclude any menus folders within the lvlibs (you can include/exclude pieces of lvlibs by the way)...   Sometimes this can reduce the build time, but it can be a little trickier since you need to know which things to include/exclude.   If you are just beginning, use method #1 at first.
Ok thats they way it is with most Multisim VIs that I am familiar with but there may be some things that I am missing because you are using myDAQ...   I've requested that someone familiar with the myDAQ products on the academic team also reply to this thread.
Hope this helps and good luck!
Regards,
Pat Noonan

Installing Multisim & Driver Software

Hello
Briefly. I am a new student who's been issued my class software. In my software package I was issued 2 Dvd's. First dvd NI Circuit Design Suite (Multisim) 12.0.1. & the 2nd NI ELVISmx 4.4 Driver Software. I am not sure which dvd out of the package to install first. If someone could help. Laslty can someone also suggest a tutorial showing how install the driver software. Thank's in advance Kelly.

Hi there,
Will you be using NI myDAQ or NI ELVIS hardware? If not, then you don't need to install the NI ELVISmx driver software. Simply run the Multisim installer and make sure you disable the NI ELVISmx 4.x feature.
If you have the the hardware, then run the Multisim installer, enable the NI ELVISmx feature. The installer will let you know when to insert the DVD for the driver software.
Regards,
Fernando D.
National Instruments

Mydaq no supported devices

Hello,
I am having a lot of trouble working with myDAQ. The DMM and other applications are saying that there are no supported devices when I have the myDAQ properly installed (at least I believe). I have seen this issue has come up on previous posts and I tried to apply some of them. I tried resetting the MAX database. It worked ONCE but then, the issue came up again and I tried resetting but it didn't work. I sort of tried this posts solutions:
http://forums.ni.com/t5/Academic-Hardware-Products-ELVIS/myDAQ-recognized-as-USB-flash-firmware/m-p/2762816/highlight/true#M2634
but my device in device manager is being recognized as a Data Acquisition Device.
Am I missing a driver? Is my brand new USB cable for the myDAQ gone haywire already??
Could anyone help me with this? I would be very thankful!
I have also attached the screenshot of MAX that shows what it displays about my myDAQ.

Hello Jeff,
Thank you for replying! I tried updating the driver but the screenshot is still the same and the DMM still says that no device supported.
I have already tried reinstalling the entire suite (LabView, Multisim, Utilboard, etc...) in the order that the DVD told me to. That didn't work.
I did try plugging in the device to another computer and there, it was detected. Also, I dual boot on my machine so I tried installing elvis4.5 on my other partition and myDAQ works there! There's something wrong about my Windows 7 configuration probably...do you have any further suggestions? Things you want me to pull up from my computer?

Can i control buck converter and Multilevel Inverter using ni MYDAQ digital IO pins

I am having Buck Converter and Multilevel Inverter Hard ware Modules and I done co-simulation using LabVIEW and Multisim so now i want control my hard ware modules using MYQAQ digital IO pins.
Can i use MYDAQ to Controlling swithes in Hardware modules..

Hello keshavsew.
These are the documents I mentioned:
SPECIFICATIONS NI myDAQ
http://www.ni.com/pdf/manuals/373061f.pdf
USER GUIDE NI myDAQ
http://www.ni.com/pdf/manuals/373060f.pdf
In the first one, I think you'll find your answer.
Regards,
Amanda B.
Applications Engineer
National Instruments

Open and close multisim contact with LabVIEW

Can I open and close multisim contact with labview and read the receptor estatus (p.e. lamp)?
Thanks.
Attachments:
Dibujo.JPG ‏13 KB

Hi Guddan,
I created a RFC having a query which is taking a long time to execute. So i want to close RFC connection with portals which is via java connector(JCO) before that query and open the connction again after that query.
I guess i will need to understand your requirement a little more in detail, as i understand you have an RFC which has a query within to fetch some data and is taking a long time to do so. In the meantime you don't want to keep the connection open?
My question would be, Is the role of this RFC to only execute the query and fetch the data or does it do something else?
If it does other things and these are independent of the query execution, then you can span a parallel call within the RFC to execute the query and in the meantime the RFC does the other things (or vice versa) hence reducing the overall time taken.
If the sole purpose of this RFC is to execute the query, then you will not be able(i mean to say there is no simple and direct way of doing this) to close the connection after the Query is started and re-establish the connection after its execution, for a simple reason that - how will you know if the query has completed it's execution, so that you can establish the connection back.
Alternate solutions, make this a two way asynchronous call, 1) You invoke the RFC asynchronously and close the connection, the RFC in turn will execute the query and transfer the data to JCO via another RFC call.
If this needs to be a synchronous call, then you will need to optimize the query to its best.
Regards,
Chen

Is there a way to open a .mst file created in the student edition with MULTISIM 9

When a student builds a file with MultiSIM 9, the circuit is created as a .msm file. When the student goes home to work, they can open a .msm file with a student version, 2001 for example, but any change to the file can only be saved as a .mst file. As soon as the file is saved as a .mst file, we have not found a way to open the file with the educational version of MultiSIM 9. Is there any way to convert these files? This makes it very difficult for a student to work at home for a project between or prior to labs.
Thanks

JKR,
Unfortunately, the ".mst" extension is supposed to be open only by Textbook editions of Multisim. Not even a Power Pro version would be able to open it.
I'm not sure the specifics of your case, but I guess that you open/saved the circuit on your textbook edition and that converted the file extension, is that right?...
Well, as far as I know the textbook editions are meant to be 'demo' type of releases, so is limited in many features. You should be OK with a Student edition though -- which is not the one commonly found in textbooks.
Nestor
National Instruments

Error multisim 10 with windows vista

Hi, I have seen that multisim 10 is not compatible with windows vista, when I installed all is ok, but when I try to run the programs it marks an error, with autoroute.dll (998) or something like that, I know that in this forum is already a similar post, but it has not answer, and it is since 2007. I hope you can help me, thank you

Hello,
Multisim 10.0.1 is compatible with Windows Vista, and this is a free update. Go to the Drivers and Updates page, and select your edition (Student, Educational, Power Pro).
Regards,
Fernando D.
National Instruments

MultiSim 9.0.41. Non-admin users unable to launch program without error messages.

I have installed MultiSim 9.0.41 has been installed on four workstations. The PCs reside within a local domain with ten users. The domain resides within the greater university domain, is technically not configured as a true subdomain, but it has access to university domain resources (such as the license server). We have SSO (remote profiles) functionality enabled.
MultiSim runs with without problems for admin users. We start having issues with nonadmin users. I series of pop-up messages appear when the program is launched:
"The Microsoft Jet database engine can not open the file C:\Program Files\Electronics Workbench\EWB9\database\mscomp_s.prd. It is already opened exclusively by another user, or you need permission to view its data."
"The Microsoft Jet database engine can not open the file C:\Program
Files\Electronics Workbench\EWB9\database\CPCOMP_S.PRJ. It is already
opened exclusively by another user, or you need permission to view its
data."
"Error loading library C:\Program
Files\Electronics Workbench\EWB9\PCBComponentEdit.dll, ('998') Invalid access to memory location."
"The Microsoft Jet database engine can not open the file C:\Program
Files\Electronics Workbench\EWB9\database\mscomp_s.prd. It is already
opened exclusively by another user, or you need permission to view its
data. Error Code:3051"
Solutions attempted (without success):
- Update program (no updates found via update manager or NI site)
- Run program as admin
- Give all users full permissions to program files (major security risk)
- Change "Directory for EWB Shared Components" to public shared drive. Interestingly, MultiSim shows the network drive as unwritable (though it clearly is).
Any ideas? Are there updates that fix this issue? Is this solved by the newest version? What do I need to do differently to ensure that user config files are saved in their roaming profiles vs. locally (note: I have already tried to correct the paths during install and post-install without success).
Thanks!
Message Edited by refriend on 05-22-2008 02:26 PM

Hi Refriend,
The error message indicates Multisim is not able to read/write to the database folder. Please have a look at the following knowledge base article for instructions to correct the database problem.
http://digital.ni.com/public.nsf/allkb/B06773CE511C7E588625720B00502B8E
Multisim 9, you need to setup the permission for the database manually but in version 10, this step is not required. As for saving user config file as part of the roaming profile, this option is not available. Multisim will always look in the locale drive for the config file and if one does not exist it will create one for that user and save it locally.
Tien P.
National Instruments

How can I import data in to the digital word generator in Multisim?

How can I import data in to the digital word generator in Multisim?
I just received this comment from a friend, a RADAR engineer, who has just down loaded Multisim. He has been using HP/Agilent software. He has a work around using a piecewise linear voltage waveform with data imported from Excel but this is not really a good solution. It would also be helpful to import data from Mathcad or equivalent.
"I thought I was about to be impressed with MultiSim but it ended only in disappointment. There is a word generator in the simulation instrument panel which can drive the DAC with a waveform and it can have thousands of lines of values. I opened Excel, wrote the formula to generate the time and voltage points for a chirp, converted to DAC values in Hex and then went back to the word generator in MultiSim to load the values only to find that you have to enter each value manually. It doesn’t even allow you to paste in a list of values from a text file. I’m not going to type 5000 values by hand. If you get the chance to give feedback to National Instruments please ask them if the paste option can be added to the word generator. MultiSim is useful in many regards, but in this case, it left me with the impression that it is considerably limited in capability compared to what I’m used to."

Hi,
You can load your data automatically in the Multisim word generator. Follow these steps:
- Save your data file (in excel .xslx ir .csv format) on your computer
- Change the extension of the file to ".dp"
- Double-click the word generator in Multisim and click on Set...
- In the Settings dialog box, click on Load and then Accept
- This will prompt you to select the .dp file you have on your computer, select it and you're good to go
However, in Multisim you have the option of creating your own custom simulation analysis and instrument.
I will try creating the instrument and send it back to you but it might take some time.
Multisim and LabVIEW are very powerful in test automation, with the custom instruments you create for Multisim you don't need to export your data file into excel from LabVIEW (or MathCAD or other tools) and then reload it into Multisim. The test procedure is automated instead.
Please check this reference design about automated simulation
http://zone.ni.com/devzone/cda/tut/p/id/7825
Here is how you can create your own custom measurement tool in Multisim and LabVIEW, but as I mentioned, I will create the word generator and come back to you anyways
http://zone.ni.com/devzone/cda/tut/p/id/5635
Let me know if you have any questions.
Mahmoud W
National Instruments

Creating a custom component in multisim using *.lib and *.olb files

i have *.lib and *.olb files for a pspice model. which file i have to you while creating a custom component in multisim.

Hello,
Thanks for your question. In order to create simulatable custom components in Multisim you need a SPICE model (Multisim can also understand PSpice Models). The file format for SPICE model can be different according to the manufacturer, for instance: *.cir, *.lib, *.llb. At the end of the day these files are text files that you can open with a text editor, therefore, you can simply copy and paste the model in Multisim.
Here are two good resources on component creation:
Component Creation 101
Creating a Custom Component in NI Multisim
When you reach the step where you need to enter the SPICE model, simply open the *.lib or *.olb file with a text editor, and copy and paste the model.
Hope this helps.
Fernando D.
National Instruments

NI myDAQ driver on MAX

How can I annex NI myDAQ driver? It is Not included in the list of drivers created when I installed NI-DAQmx. My operating system is Windows 7 Vista.
Thanks.
Diego.

Hello diegote,
NI myDAQ Requires NI ELVISmx and NI DAQmx. You can check this link for additional information:
NI myDAQ Driver Download
http://www.ni.com/white-paper/12403/en/#toc1
If you have any trouble this troubleshooting link coul help you:
NI myDAQ Troubleshooting Utility
http://www.ni.com/white-paper/11424/en/
Let us know if this information helped you. Kind regards.
David P.
National Instruments
Applications Engineer
www.ni.com/soporte

Mydaq usb connection - lost immediately

Hello,
I just recieved a mydaq, and am having troubles getting it connected. The process I followed, was install the supplied software (labview, NI-Elvis, NI-mydaq drivers), and then plugged in the usb mydaq. It is found quickly, finds driver successfully, and then immediately disconnects. The blue light on the unit stays lit as long as the USB is plugged in.
After unplugging, and replugging in the unit, I hear an audible sound from windows 7 confirming a new device has been connected (same sound as when plugging in a USB drive), and within 3 seconds, another sound is heard, (same sound as when unplugging usb drive).
When I load the ELVIS application, and try to take a DMM measurement, under the Device dropdown box, it says No supported devices. But, when I plug in the myDAQ, "No Supported Devices" changes to "myDAQ1....." for a brief second. So, it looks like its being found, but loses connection immediately.
I may have a defective unit, but unsure. Does anyone have any recommendations on making the DAQ maintain a usb connection

HI,
Just to let you know of my experience. I had the same problem as you . It kept loosing connection and making a sound every time it lost connection, very frustrating.
The fault was my own making . I used a USB cable that was not the original and was longer than original.
Works fine now

Mydaq y multisim

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