Abstract: An articulated device includes two plates (PI, PS) interconnected by six k members (OLij) disposed in a closed latticework structure, and a control assembly for controlling the relative positions of these two plates. Each link member is of substantially constant length and the control assembly also includes six slider members (OCij) respectively connected to the six link members (OLij) and to the bottom plate (PI), each slider member being suitable for sliding relative to the bottom plate (PI) along a predetermined sliding direction under drive from a motor (MOTij, TFij).

Abstract: The invention comes within the branch of the checking of repeaters formed by two semi-repeaters placed in units spaced out along a transmission network having multiple quads and comprising nodal derivation points for derivating a cable section into several cable sections. It concerns the checking of a predetermined repeater by looping the output of one of its semi-repeaters to the input of the other semi-repeater, by means of a relay logic circuit. The installation comprises means to choose the order number of a derivation, at each nodal point on the network.