A first wireline tool embodiment includes a segmented tool body having a joint deployed between each adjacent pair of tool body sections. Various other methods, systems, and computer-readable media are also disclosed. A DC power source has a negative pole that is connected by only one single electric contact with the lighting device tail. A synchronization process recomputes dependent object values, in the course of which recomputation object dependencies are established according to current object values. The mixing matrix has a rank equal to at least N.