42AG

42AG is a multifunction sound calibrator. It is a portable, battery-operated precision microphone calibrator. The calibrator can be used directly on 1" microphones. Adapters for calibrating 1/2" (factory mounted), 1/4" and 1/8" microphones are included. It can produce a sinusoidal signal of 250Hz or 1kHz at 94dB or 114dB. For documentation purposes, 42AG provides display of the environmental conditions: ambient air pressure, temperature. The sound is generated by a small loudspeaker integrated into the acoustic coupler. An internal reference microphone measures the level in the coupler and a feedback circuit automatically adjusts the level. Therefore, the calibration level is virtually independent of ambient conditions like temperature, atmospheric pressure, and humidity within the specified range of operation.

• Mono-color OLED graphical display – 128×64 (WxH)
• Temperature range from -10ºC to +50ºC or 14ºF to 122ºF
• Powered from two type LR03 alkaline batteries (AAA-size)
• Automatically switching off if battery voltage too low
• Size ( LxWxH ) is 97 x 51.5 x 41mm / 3.8 x 2.0 x 1.6"