Oscilloscope Automatic Test System And Database Management

NH4602, the program-controlled calibration instrument of oscillograph, was designed in our laboratory for the need of NanHua device manufacturer in GuiZhou province several years ago which can be used to regulate and adjust the oscillograph into expected precision. The earliest automatic test procedure is completed under the DOS platform which adopt the ESBASIC .Not only usage was more cockamamie but also the user interface was not clear and intuitionistic. Because of the operating system's update, it makes us to re-design the test procedure of the oscillograph calibration instrument under the WINDOWS system. We must resolve the user's interface firstly because good user interface is the most important precondition to the design of the construction of the procedure in order to complete tasks requested. At the same time we have to perfect the whole test function. The software package is designed according to the new oscillograph's test rule.This paper introduces visualization's procedure design method under the Windows environment with Visual Basic that makes the programming process more convenient. That test part of the software is primarily used to complete the test of some parameters, such as time base, time-expand, time interval, voltage interval, vertical, stable state, transient state and scanning linearity. The result of the test needs to be analyzed and judged. Clear user interface and timely warnings for mistakes of testing process inside because of the user's fault operating make whole test process more easier than it did on a time. For users, the grasp of whole process becomes more convenient.The database part of the software's system is created for the need of the test process and the test result. Of the beginning of the test, the parameter databases for test-required scillograph must be created, and this is what oscillograph examination need. At the end of the test, the databases, such as query database, certification database, etc. are required to create for users. Visual Basic provides capabilities of calling and operating mass datum resources. We adopt the Microsoft Access database which is supported by the Visual Basic to create the database so that we guarantee the integrity of oscillograph examined system software.At the request of Nanhua apparatus plant, the software system is developed. It realizes various tests of station suggested and testing functions with more integral database. At the same time it optimizes the users interface and makes operation moreconvenient. In the course of development, we added many bug information, this makes the users detect bugs more easily when they are operating. Rectification will be done in time. All these advantages make the whole operating course more simple and easy and demonstrate that the software system has the value of definite application.