在广播电视系统中,为了保证发射和接收信号的质量,必须经常对广播电视场强进行测量。广播电视场强远程监测系统能同时测量电视信号场强和广播信号场强,方便快捷,稳定可靠,省时省力,具有很高的推广价值。本文主要介绍高频调谐电路、A/D转换电路、D/A转换电路、网络传输电路等电路设计。 In radio and television systems, to ensure the quality of the transmitted and received signals, the field strength of the broadcast television must be constantly measured. The remote monitoring system of radio and television field strength can simultaneously measure the field strength of television signal and the field strength of broadcasting signal, which is convenient and fast, stable and reliable, saves time and labor and has high promotion value. This article mainly introduces high frequency tuning circuit, A / D conversion circuit, D / A conversion circuit, network transmission circuit circuit design.