Portable wave detector low frequency receiving voltage sensitivity performance measurer

The sensitivity performance measurer for low frequency voltage of portable wave detector includes sound field unit and electric circuit unit. The sound field unit is one sound pressure tank with driving sound source, signal output socket connected via wire to the standard detector and the measured d...

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Bibliographische Detailangaben
Hauptverfasser:	BAOXING XIE, CHAO PAN, SHOULIU CHEN
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	The sensitivity performance measurer for low frequency voltage of portable wave detector includes sound field unit and electric circuit unit. The sound field unit is one sound pressure tank with driving sound source, signal output socket connected via wire to the standard detector and the measured detector inside the tank, and drive input socket connected via wire to the driving sound source, circular opening at the bottom for installing the drive sound source, which has belled mouth towards the openings. The drive input socket is also connected via cable to the output of the power amplifier in the electric circuit unit; and of the two signal output sockets one is connected via cable to the input of fixed gain amplifier in the circuit unit and the other to the input of program controlled amplifier.