PURPOSE: To execute a test efficiently, by using in common a general purpose measuring instrument for testing various kinds of objects to be tested, and also executing the test simultaneously and in parallel by means of a time division control.

CONSTITUTION: This testing system is provided with interface adaptors 7aW7c which are provided so as to correspond to objects to be tested 2aW2c, respectively, and also have a signal generator which is required for each object to be tested, and a common measuring equipment 6 having plural general purpose measuring instruments which are capable of corresponding to each object to be tested, by being connected to the respective interface adaptors through a microcomputer 8. In this way, each object to be tested 2aW2c is tested by means of time division by the microcomputer.