| 摘要 |
FIELD: electric communications. ^ SUBSTANCE: device has commutation field, control panel, horizontal lines selection block, vertical lines selection block and indication block, while commutation field with capacity for N inputs and M outputs is made in form of rectangular matrix with dimensions NxM of polarized relays, having except working also service contacts for closing, control panel has input number indicator, output number indicator, "Connect" command indicator, "Disconnect" command indicator, "Control" command indicator, horizontal lines selection block has N commutation groups, each of which has three contact couples for closing, block of vertical lines selection has M contact couples for closing, indication block has M indication elements with appropriate circuit for their interconnection. ^ EFFECT: higher efficiency. ^ 1 dwg |
