Other topics about Controlling Peripherals
The E5052B macro function (E5052B VBA) can be used not only to automate measurements but also to control external measurement instruments connected via USB/GPIB interface by acting as a self-contained system controller (see An Overview of a Control System Based on the Macro Function).
The E5052B macro function (E5052B VBA) performs communications via the COM interface when controlling the E5052B itself, but it communicates via VISA (Virtual Instrument Software Architecture) when controlling external measurement instruments.
To use the VISA library in the E5052B macro (E5052B VBA), you need to import two definition files into your project with the Visual Basic editor to define the VISA functions and perform other tasks. The definition files are stored on the sample programs disk under the following filenames (for information on importing modules, refer to Saving a Module (Exporting).
visa32.bas
vpptype.bas