描述
信号在长线中传输会遇到三个问题:一是高速变化的信号在长线中传输时出现的波反射现象,二是具有信号延时,三是长线传输会遇到外界干扰。
225 KVA 13800 480 277 480Y GE Dry Transformer 3 Phase
NEW Xycom VME XVME-977 Hard / Floppy Drive Module
USED Allen Bradley 1756-L61/B ControlLogix Processor
Liebert SI025277YANDE Interceptor Surge Suppressor
NEW ABB 3HNM06855-1 Purge Sensor 3HNM 00272-1
XYCOM XVME-660 VME BUS XVME 660 XVME660 Intel USED
USED Allen Bradley 2711P-RDT10C PanelView Plus 1000
USED Allen Bradley 1756-L61S B GuardLogix Processor
USED ABB E-31712 Paint Teach Pendant Programming Unit
NEW ABB Baumer 5692435L Feedback Unit PLSR 2XM0 / K10