Hi Dennis
Thanks for your fast reply
Yes, I am also using VISA and I have an instrument driver for the oscilloscope
I need the Internet Toolkit only to download the screen image because there is not command to retrieve that information
For this the VI "URL Get HTTP Document" works fine
Just few minutes ago I found a command to retrieve the information I was trying to get from the URL "http://...?setupsend=getsetup.set"
Thus the problem was solved with VISA as you suggested
But now I am curious about the limitation of "URL Get HTTP Document" to manipulate those kind of URL
So I will keep the question open
How can I download a file from an URL like "http://....?var=value" ?
Regards