MdtMezzanineCard Node1 MdtMezzanineCard + NOTSET - m_nlay - m_nTubes - m_mezzId + MdtMezzanineCard() + tdcChannel() + tubeNumber() + checkConsistency() + id() + numTubeLayers() + numTubesPerLayer() + offlineTube() + tdcToTubeMap() + tubeToTdcMap() Node2 std::array< uint8_t, 24 > + elements Node2->Node1 -m_tdcToTubes -m_tubesToTdc