遥测系统经常需要精确地测量直流或低频交流信号。在很多情况下,需要对低频付载波调频,遥测系统的精度则主要取决于压控振荡器调制特性的线性度。本文介绍的电路就是为了这种应用而设计的。 Telemetry systems often need to accurately measure DC or LF AC signals. In many cases, the need to pay for low-frequency carrier frequency modulation, telemetry accuracy of the system depends mainly on the linearity of the modulation characteristics of the VCO. This article describes the circuit is designed for this application.