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本文介绍了一种用于外差测量的可编程信号处理系统。对于差动的双频率输入信号以及单频率信号配以相应的接口软件,可方便地实现计数,对减以及频率的测量。本系统的工作频率高达7MHz,并配有抗干扰电路,可广泛应用于多种外差测量系统及工业现场。
This article describes a programmable signal processing system for heterodyne measurements. For the differential dual-frequency input signal and the single-frequency signal with the corresponding interface software, can easily count, subtract and frequency measurements. The system’s operating frequency up to 7MHz, and with anti-jamming circuit can be widely used in a variety of heterodyne measurement systems and industrial sites.