Self-checking circuit in microwave equipment

Self-checking circuits in multiple microwave equipments comprising:

• directional couplers each for separating and extracting a portion of a microwave signal from each monitoring point on a microwave main signal path of multiple microwave equipments;
• 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 detection signal from said detector;
• multiple analog/digital converting means each for converting an output signal of said amplifying means into digital data;
• interfaces each 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 each for storing signal values transmitted through said interface;
• second storage means each for storing a control program and various data;
• central processing circuits each 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;
• and
• meas each for displaying a result value outputted from the central processing circuit.

A self-checking method in a microwave equipment comprising the steps of:

• separating and extracting a portion of a microwave signal at each monitoring point on a microwave main signal path using each corresponding directional coupler;
• detecting the extracted portion of the signal using each detector;
• amplifying the signal detected by said each detector using each amplifier;
• measuring ambient temperature of said each detector using each temperature measuring means;
• converting an output signal of each amplifying means into digital data using an analog/digital converting unit;
• performing interface with an outside with respect to a signal from the temperature measuring means and a signal from the analog/digital converting means using an interface;
• storing signal values transmitted through said interface in first storage means;
• storing a control program and various data necessary for checking the microwave equipment in second storage means;
• comparing and analyzing the signals stored in said first storage means using the control program and data stored in said second storage means and producing a result value of the comparison and analysis using a central processing circuit;
• and
• displaying the result value outputted from said central processing circuit.