The Usb-gpib Adapter To The Design And Implementation Of The Function Function

This paper focuses on the design and performance of software in the GPIB controller based on USB .The cabinet flexible controller is important for PC without external interface and portable computer to construct automatic test system, which is the kernel part of the ATS.USB is a new industry standard embodies the Plug-Play advantage in deed. GPIB protocol defined as a standard to build automatic test system has dozens years history and been used widely. To construct ATS, the technology is not complex and the price is low,especially in interconnection of table-based instruments. So making full use of the USB and the GPIB virtues, designing the GPIB controller based on USB is very useful to building an automatic system and can promote the whole performance of portable test system.With the emphasis of discussing designing software of the USB-GPIB controller, the dissertation introduces system organization briefly. It includes Dynamic Link Library ,VISA function and panel for testing.In the paper chapter one introduces the background and significance about designing the GPIB controller based on USB. Chapter two introduces system organization .Chapter three discusses the design of DLL and panel of USB-GPIB-B controller.Chapter four exposes the design and performance of VISA function.Chapter five summaries the design and bring forwards the mend direction.