The Modulation Domain Analysis Of The Development Of The Instrument Interface Circuit

"Modulation Domain" (MOD) is a plane domain which is consisted of frequency and time of signals. It is necessary field to measure signals in three- dimension space of signal (time domain, frequency domain and modulation domain). In recent years, "Modulation domain analysis" offers a unique method for viewing complex modulated signals. "Modulation Domain Analyzer" (MDA) may be used to analyze signal features that include of frequency, time interval and verus phase time. It has a wide range of application in digital communication system, radar and electronic warfare system, mechanical electronic system, etc.A practical MDA has been made by our teaching and research group. The main objective of this paper is to design and realize the interface circuit of "Modulation Domain Analyzer". And at the same time, I accomplish the hardware and software design for communication interface (IEEE-488 bus interface). At last, I give a concrete example to confirm the correctness and reliability of my design.