Remote automatic test system based on MATLAB using VISA over LAN

VISA over LAN was used to design remote automatic test system, in which MATLAB was selected as the application development environment to enhance the capability of data processing and analysis. Native GPIB commands and queries were funneled to/from VISA instrument object using Instrument Control Toolbox functions, and then used to control electrical measuring instruments through VISA I/O Library API and VXI-11 protocol. An example system for microwave imaging test with digital oscilloscopes integrated was developed to perform the test of radio frequency and intermediate frequency signals.