Communication design of automatic test system based on VC++

The design of automatic test system based on VC++ implemented the communications between the spectrum analyzer and PC. USB-GPIB Interface board is used, USB with its unique advantages of strong anti-interference, high speed and easy to use make the application of automated test system based on GPIB more extensive and flexible. This paper describes the working principle of the test system and the design of hardware as well as software. And complete the procedures of host computer for spectrum analyzer automated test system in VC+ +6.0 environments.