I've just stolen a GPIB controller, an yellow small box, from the spectrum analyzer HP8591E.
The controller is going to be used for driving the old spectrum analyzer HP3563A for a while.
Gopal and I will be developing and testing a GPIB program code for HP3563A via the controller.
Once after we get a new GPIB controller, it will be back to the original place, i.e. HP8591E.
--- GPIB controller ----