A contactless measuring system having at least one test probe forming part of a coupling structure for the contactless decoupling of a signal running on a signal waveguide, wherein the signal waveguide is designed as a conductor of the electric circuit on a circuit board and as part of an electric circuit. The diagram system includes a diagram that stores shape element and an application program interface that includes a control that facilitates access to the diagram. As a result, it is achieved to reduce degradation of image quality due to the dynamic false contour with a simple structure and processes. The modem checker client interacts with the modem analysis server to acquire information relating to the subscriber associated with the modem MAC address, the services authorized for the modem, and data indicative of the status and performance of the modem. Extraneous pages are then pruned to improve the quality of the resulting communities.