| 摘要 |
PURPOSE:To improve the efficiency of maintenance operation by previously checking an error of set contents, by providing a set board which provides a centralized batch control over the operation state of each unit and recognized parameter information. CONSTITUTION:Signals of several circuits are applied to input-output units 1-1- 1-12 signals processed by those units 1-1-1-12 are applied to high-speed multiplex unit 2 via multiplexing bus 12, and data multiplexed are applied to modem unit 3 via modem interface bus 13. Signals converted into transmitted signals or modulated signals by this unit 3 are sent out to a transmission line via transmission- line change-over unit 4. To supervisory control bus 14 to this multiplex transmission system, operation unit 10 setting parameters needed for operations of units 1-1- 1-12, 3 and 4, supervisory control units 7 and 8 supervising the operation states of units 1-1-1-12, 3 and 4, and centralized set boards 9 and 9' are connected so as to perform the centralized execution of the indication of control information and the display of supervisory information, thereby separating them from the multiplexing process. |
