EM-21A
Dummy microphone
The EM-21A dummy microphone enables an electrical signal to be led to the sound level meter so that it is equivalent to the use of the measurement microphone.
The dummy microphone is used for testing the electroacoustic characteristics of sound level meters equipped with the WK 21 measurement microphone or the microphones being equivalent to this type.
Technical data
- Diameter of the microphone:
- 1/2"
- Equivalent capacitance:
- 18 pF
- Polarization voltage:
- 200 V
- Signal connector:
- BNC
- Dimensions:
- Ф 14 x 50 mm
- Weight:
- 29 g