The invention relates to a gas-insulated bus bar component comprising a grounded housing that is filled with protective gas and at least one bus bar conductor, which extends in the longitudinal direction of the housing and is supported on said housing by means of insulating bus bar supports. The apparatus comprises a sample holder comprising a base and a projection extending from the base. The coating has a substantially consistent thickness at the first and second sides and at about the edge regions. The network related parameters may relate to different access points and an identifier may be associated with each set of network parameters to facilitate the subsequent identification of desired network related parameters.