부품 정보
Output sound pressure levels: 74, 84, 94, 104, 114 db; actual output frequency: 125.9, 251.2, 501.2, 1000.0, 1995.0, 3981.0 hz porm 3 pct; portable; dust and moisture proof; enclosed in plastic case except for test cavity; 8 hour min. Operation; battery test: internal circuitry check, automatic shutdown when voltage is too low; operating temperature: m10.0/p50.0 deg. C; microphone coupling: transducer cavity accomodates the following 1 in. Microphones (not included): electret condenser pn's gr1961 and 1971; western electric pn 640aa; toko rika pn mr103
