An electric reference signal channel is added to the main signal in a hybrid optical current sensor or voltage sensor. The docking means comprises a first part provided with a guiding member and a second part provided with guiding elements for contacting the guiding surface. The user equipment 4 is connected to a primary serving cell of the first radio access technology system 2 and a secondary serving cell of the second radio access technology system 3. Most preferably all bare aluminum surfaces which the reactive species contacts are mirror polished. A related data capturing method and a storage medium recorded with an application program to accomplish the data capturing method are also provided.