Systems, methods, and computer program products are provided for synchronizing device settings at a mobile device with settings held at a database in a synchronization server. In one embodiment, a network node obtains a reference measurement performed by a measuring node, where the reference measurement contains one or more interference components. An elastic member and an electrode plate are separately disposed in the interior of the upper block and the lower block, and the elastic member supports the electrode plate so that the electrode plate is biased in a clamping direction.