DAQ board and Multisim

[mlau]

I'm using the myDAQ unit and I'm wondering how I can interface this DAQ unit with Multisim. I'm very used to using DAQmx components in LabVIEW but I feel like a fish out of water with Multisim.

In particular, it seems like there's no explicit way to acquire real-world analog signals and integrate them with a simulated circuit? That seems like a very large limitation compared to LabVIEW...

[Fernando_D]

Hello,

There are different ways to integrate LabVIEW and Multisim.

Virtual Prototype

The idea here is to acquire real-world signals with LabVIEW and your DAQ board, save the data into a LVM file and then open this file in Multisim using the LVM_VOLTAGE source (Sources group SIGNAL_VOLTAGE_SOURCES family). Here is a tutorial.

LabVIEW Instruments for Multisim

You can build a VI and then use it as a virtual instrument in Multisim. There is pre-defined template that you can use to build this VI. Have in mind that there could be issues with timing because Multisim uses simulation time. More info here.

LabVIEW Multisim Connectivity Toolkit

You can control Multisim from LabVIEW using this free (beta) toolkit. It installs a set of VIs to open/close Multisim, run the simulation, get data, and so on. More info here.

By the way, there is a forum dedicated to Multisim and Ultiboard:

Circuit Design Suite (Multisim, Ultiboard)

Hope this helps!

Fernando

[mlau]

Yes, very much so. Thank you!