The functions of the analyzer are provided by NI official. No programming required. However, it cannot be used with GPIB-USB-HS. Products with "+" such as GPIB-USB-HS+ , PCI-GPIB+ , PCIe-GPIB+ are supported. You can use the GPIB analyzer by marking the red part of your diagram as "+" product.
Thank you for your reply. Is it possible to use my C# program (not NI officiel Analyzer software) via product "+"? I mean that I want tor write a C# program to monitor the GPIB bus (blue) via GPIB-USB-HS+ or PCIe-GPIB+.