| Power amplifier chip is widely used in modern communication.It is more and more important for reliability test,especially for life test of power amplifier chip.Military power amplifier chip reliability requirements are more stringent,each power amplifier chip in extreme conditions to carr y out a long time reliability life verification.Traditional reliability testing relies on manual recording and monitoring,which requires a lot of labor and cannot guarantee the accuracy and timeliness of data,so it is not suitable for long-term life testing.In order to achieve accurate and timely monitoring data,an efficient automatic monitoring s ystem has become an urgent need.Based on C# language,this paper designs a current automatic monitoring system for the self-developed power amplifier chip.According to the test conditions and test requirements of the chip,a test platform is built by using PCB,various communication buses,chip fixture,environmental instrument and various test instrument.Combining with VISA,SCPI,VI,relational database,dynamic web application technology and form application technology,the test program is developed.Using object and interface oriented programming to achieve the effect of matching various types of instruments,high cohesion and low coupling,using three-tier software architecture and MVC design mode,the code has high universality,and is easy to expand and maintain.The program is designed in multithreading mode,ensures smooth operation.In some parts of the program,the singleton mode is used to effectively retain the running data of the program.The test data is automatically recorded and analyzed,it can be read anytime and anywhere,instruments can be set up by one key,results are displayed graphically.In this paper,three long-term high temperature life tests are carried out on the sampling chip.The current monitoring system has the advantages of good real-time,high accuracy,simple operation and convenient data viewing. |
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