Field configurable handheld virtual testing instrument system and implementation method

The invention provides a field configurable handheld virtual testing instrument system and an implementation method. The system comprises a testing instrument and a control mechanism, wherein the control mechanism consists of a standard configuration script, a system engine, a function plug-in, a background database, a data bus and a bus controller; and the system engine dispatches the function plug-in and the background database to perform the operation of a testing process by loading the standard configuration script and controlling the data bus with the bus controller according to the requirements of the testing parameters and the testing process of the standard configuration script. When a testing task changes, the system can meet new testing requirements by using an external interface to change the configuration script. The field configurable handheld virtual testing instrument system and the implementation method overcome the defects of difficult structuralization and modularization, waste of time and labor, and high possibility of making mistakes of the traditional test.