摘要
数字AGC(自动增益控制)是数字地震仪中的关键部件之一。本文对DFS-V型数字地震仪中的数字AGC的基本理论进行了深入的理论探讨,建立了严格的工作流程图和工作方框图,对第一乘法器、第二乘法器、数字电平检测器、扩展和压缩发生器进行了深入的电路分析。最后结合主要的时序图,对DFS-V型数字AGC的整体工作过程进行了全面地评述。
AGC (Auto Gain Control) is one of the key parts of the digital seismograph. The AGC circuit of DFS-Y digital seismograph is stmple and flexile. It can meet the requirements of seismic prospecting work under all geological conditions.This paper has described the working theory of the digital AGC unit, established a strict working program and a working frame and analied the theory of the first and second multipliers,the data detector,end the expansion and compression generator, and finally fully discussed all the working processes of the circuit of the AGC of DFS-V digital seismograph with the holp of a time sequence diagram.
关键词
DFS-V型
数字地震仪
数字AGC
digital seismograph, digital auto gain control, data detector, expan-sion, compression
