4-channel Microphone Power Supply Type 2829 is designed for acoustical systems where robustness and reliability are important. It is a simple power supply that introduces negligible noise into the measurement system. The functionality of the connected microphones and preamplifiers can be checked by the Charge Injection Calibration method. The test signal is applied to all the connected microphone and preamplifier combinations by means of the mini-jack socket on the rear panel.
- The production, testing and quality control of loudspeakers and telephones