Non-existent GPIB Interface

[ahmadkc]

We are trying to interact with an Agilent 8753ES network analyzer. We've developed an HMI which is able to connect to the device once we input the correct address. But once we try to change the start and stop frequencies using the HMI we get a "Nonexistent GPIB Interface" error. 

[REDS]

Hello ahmadkc,

Thanks for posting in the NI Discussion Forums! Could post your code and point out where you actually make the calls to change the start and stop frequencies on your network analyzer? From what I have searched, the error description goes along with some other file I/O errors, such as writing to a file that you have not created, or specifying an incorrect file path. When you change the frequency, are there any file I/O operations involved afterwards?

Is this a code that you developed from scratch, or did you base from some other example?