TYPE 4943-B-001

½-inch diffuse-field microphone with Type 2669-B preamplifier, 3.15 Hz to10 kHz , 200 V polarization

Designed for general random-incidence measurements and for noise measurements in accordance with ANSI standards.

見積もり依頼

Type 4943-B-001 comes with a cable including an older Brüel & Kjær preamplifier. Input connector for use with older equipment, this cable does not support TEDS.

USE SCENARIOS

  • Diffuse-field measurements
  • In-car measurement

THIS MICROPHONE IS A FACTORY-ASSEMBLED COMBINATION OF:

The unit is assembled in a clean-room environment and sealed together, after which it is assigned one single type number and one single serial number. This means that the combined unit has better precision and long-time stability, and is handled as one complete unit.

The unit also contains TEDS, which means that information about the serial number, type and sensitivity is stored within it.

THE BENEFITS OF USING A MICROPHONE-PREAMPLIFIER COMBINATION ARE:

  • Better stability and precision. Because the unit is assembled in clean-room facilities, there is no contamination.
  • Ease of use. Your analyzer front-end and software will automatically detect the type number, serial number and sensitivity because of the built-in TEDS technology. There is no need to enter this manually for every channel. 
  • Calibration integration. The TEDS technology means the microphone is automatically detected and identified by your data acquisition software, allowing it to be easily integrated with your calibration database.
  • Fewer errors. As your data acquisition software automatically knows the microphone type, serial number and sensitivity, manual inputs are greatly reduced – reducing human errors.
Capacitance
pF
Diameter
1/2
Dynamic range
15.9 – 148 dB
Frequency range
3.15 – 10000 Hz
Inherent noise
15.9 dB A
Lower limiting frequency -3dB
3.15 Hz
Optimised
Diffuse Field
Polarization
Ext polarized
Polarization voltages
200 V
Pressure coefficient
-0.008 dB/kPa
Sensitivity
50 mV/Pa
Temperature coefficient
-0.015 db/ºC
Temperature range
-20 – 80 C
Venting
Rear
Weight
gram
Sound field
Diffuse-field
Input type
Classic
Microphone type
Diffuse Field