Patent ID: 6154682
Filing Date: 2000-11-28
Classification: G01R

Abstract:
A self-checking circuit in a microwave equipment, comprising:directional couplers each for separating and extracting a portion of a microwave signal from each monitoring point on a microwave main signal path;detectors each for detecting an extracted signal from said directional coupler;multiple temperature measuring means each for measuring temperature of said detector;multiple amplifying means each for amplifying a detected signal from said detector;multiple analog/digital converting means each for converting an output signal of said amplifying means into digital data;an interface for performing interface with an outside with respect to the signal of said temperature measuring means and the digital data of said analog/digital converting means;first storage means for storing signal values transmitted through said interface;second storage means for storing a control program and various data;a central processing circuit for comparing and analyzing the signals stored in said first storage means using the control program and data stored in said second storage means and outputting a result of the comparison and analysis; andmeans for displaying an output signal of the central processing circuit.