E4440型选通系统是一种在测量和校准中,用来产生发射和测量音频信号的仪器,它可以与一个正弦波信号发生器一起产生精确的脉冲信号,还可以监控接收到的传感器信号,通常由产生发射信号和产生测量信号两部分组成。选通系统主要应用于声学、医疗 The Model E4440 gating system is an instrument used in measurement and calibration to generate transmitted and measured audio signals, which can be used with a sine wave generator to generate accurate pulse signals and to monitor received sensor signals, Usually generated by the launch signal and generate measurement signals of two parts. Gating system is mainly used in acoustic, medical