Alban

Hi Gribo,

Thanks for your reply. Below is the error .

Invoke Node System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
 Inner Exception: System.Runtime.InteropServices.COMException: VISA read error <append><b>System.Runtime.InteropServices.COMException</b> in RTP5000_IVICOM.lvlib:Initialize.vi->Untitled 1

Hi ,

I am trying to remote control Boonton RTP5540 using Labview and get error as in the attached picture , error 1172. I am new to IVI drivers usage. IVI drivers were already installed. Please give any information that can lead to resolve this .

Thanks in advance.

Regards,

Alban