Error Code -1073807346

[wetwilly]

Hello,

I've seen that multiple people in the community have solved this error in different contexts, I am receiving the same error when attempting to access a VISA resource.  I have a code that is attempting to configure two HP33120 function generators, the error leads to "error query.vi" which is a subVI inside "Configure Output Impedance.vi".  I've confirmed that I can communicate with the instruments in VISA test panel before, but today the instrument is timing out.  Any suggestions are appreciated

Moist

[GerdW]

Hi willy,

today the instrument is timing out.

No, it's not a timeout error!

It is a "session or reference invalid" error…

[PahlM]

If you are having trouble connecting to the instruments in a VISA Test Panel, then it could be that the devices are reserved. If the references are not properly closed, then the VI will reserve the port. In that case, you would have to restart your computer. 

I would also make sure all of your drivers are up to date, as that can cause many issues.

Cheers,

MichaelP