signal distributor(SD)

An equipment in electronic switching system to deliver signals from a central control to other circuits. It converts the central control output to highpower,longduration pulses to operate relays.; 在电子交换系统中,从中央控制器向其它电路传送信号的设备,它将中央控制器的输出转换成 大功率、长间距的脉冲,以便驱使继电器动作。