| 摘要 |
PURPOSE:To prevent all corresponding terminal instruments from stopping and facilitate the replacement of a defective circuit by combining the half circuit of respective packages of a highway transmitting and receiving circuit and a terminating circuit into one package, and using two sets of the package. CONSTITUTION:MiC is a package containing the module control circuit and terminating circuit in one sheet, and one MiC is provided each corresponding to the two routes of a highway. Each package is so connected as to be alloted for the half of the terminal instrument stored by a module. Consequently, each route and MiC and terminal instrument connected to the route constitute two independent systems, so even if trouble occurs to one system, its influence never extends to half of all terminal instrument in the module. |
