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。
REBUILT PARKER PAVC38R214 VARIABLE PISTON PUMP
NEW ATHENA CONTROLS 6275S22F RTD TEMPERATURE CONTROLLER
NEW FLEX-A-SEAL 223001S2RS2 STYLE 30 CARTRIDGE, 1-3/8″
RACAL INSTRUMENTS 5014
RK INDUSTRIES RK-LPR-503X FLUID PRESSURE REGULATOR
SPEEDFAM CLEANING SYSTEM 6G5006TP
NEW BALDOR VM7037 AC INDUCTION MOTOR, 1.5 / 2 HP, 3 PH
BOSCH PNEUMATIC CYLINDER 3842510832 SPRING LOADED