Ivi Visa ProgID for Active X Server

[MCVSimon]

Hello,

I am trying to establish a Visa connection with the SCPI Server of my VNA using Matlab. In Matlab you can use actxserver('ProgID ') to start a COM-Server. 

However, I find it very difficult to find the correct ProgID to use Visa COM. I have tried 'VISA.GlobalRM' and 'VISA.BasicFormattedIO' and some others. But Matlab crashes whenever running my program and logs: "Access violation detected".

Does anyone know if there is one correct ProgID I can use or if it is an issue within Matlab itself. (I have tried the same in Octave and there the error is:  actxserver: unable to get dispatch interface)?

For Information: I have installed NI-Visa 2024 Q3 and any additional packages.

Thanks,
Simon

[santo_13]

Have you tried the route described by MATLAB,

https://www.mathworks.com/hardware-support/ni-visa-keysight-visa-tekvisa.html

https://www.mathworks.com/help/instrument/visa-overview.html

[MCVSimon]

Yes I did, 

And it works perfectly fine. However, what I am trying to do now is to use Visa by creating a COM-Server (Matlab only ever describes the approach with the Instrument Control Toolbox).