Automatic Calibration Test System Of GSM Mobile Phone Base On Virtual Instrument Technology

With the rapid development of communication technology and prompt consumption of information in modern times, mobile phone has been advanced tremendously as individual communication terminal. Many domestic enterprises have engaged in R&D, manufacture, and marketing of mobile phones. To counter the tendency of large-scale production of cell phones, this paper proposes a design scheme concerning automatic calibration test system of GSM (Global System for Mobile Communication) mobile phone based on virtual instrument technology.Firstly, the state-of-the-art of automatic calibration test system of GSM mobile telephone is analyzed in the paper. Secondly, beginning with research of GSM theory foundation, some basic concepts and relative technology criterion of the GSM communication system are introduced. The automatic calibration test system of GSM mobile phone is designed by taking full advantage of modern computer technology, automation technology and virtual instrument technology. The integrated design scheme of the calibration test system presented in this paper introduces the hardware system including radio frequency control module, power control module, I/O control module and control module as well as test clamp. Besides presenting software structure of the system, design procedures of each function module are also described in details. Finally, the test result of the automatic calibration test system is provided.For its stable functions, the designed automatic calibration test system can satisfy almost all the calibration test performances of the GSM cell phone with promising application and popularization.