A process for circuit verification

A method for testing an electronic circuit (12) which is formed on a circuit board or circuit card (10) to a peripheral circuit (15), comprising the steps of providing a terminal (27) for inputting and outputting an electronic signal, providing a impedance-increasing device (11) for increasing an impedance of an electrical connection between the electronic circuit (12) and the peripheral circuit (15) and providing an inspection device (24) for checking the electronic circuit (12). The impedance of the electronic circuit (12) is increased to influences of the peripheral circuit (15) in front and to prevent the inspection of the electronic circuit (12) during, and the increase of the impedance is canceled after checking.