Pistonphone SC-3120A

The SC-3120A is a pistonphone type precision sound source for use in calibration of measurement microphones. It can accomodate both 1 inch and 1/2 inch microphones. * Enables calibration to within ± 0.3dB. * Can be used with 1/2 inch microphones. Applicable Specification IEC 942 Class 1 Frequency 250 Hz ± 1 Hz Sound Pressure Level 114 dB Calibration Accuracy ± 0.3 dB Applicable Microphones 1/2 inch Method Pistonphone Distortion 2.5% Maximum Operating Temperature Range -10 to +50ºC Storage Temperature Range -20 to +70ºC Power Supply Three Type AA Batteries Battery Life 2.5 Hours of Continous Operation Outer Dimensions 60 (W) x 200 (H) x 38 (D) mm Mass Approximately 600 g Accessories Adaptor for 1 inch microphone, Barometer, Type AA Batteries (3), Case