TYPE 4988-A
1/4" Pressure-field Microphone With CCLD Preamplifier, Prepolarized
Pressure-field microphone for measurements in small, closed couplers, close to hard reflective surfaces, or flush-mounted, with a frequency response of 20 Hz to 20 kHz.
問い合わせ・見積依頼Microphone Type 4988-A is a 1/4" prepolarized pressure-field microphone laser welded to 1/4" CCLD preamplifier. The preamplifier connects to CCLD input conditioning and supports IEEEP1451.4 V1.0 Transducer Electronic Data Sheet (TEDS).
It is an all-titanium design that ensures maximum resistance to corrosion and minimum sensitivity to magnetic fields.
USE SCENARIOS
- Measurements requiring an EN/IEC 61326 EMC compliant product
- Measurements very close to sound ports of an audio device (near field)
- Measurements in small acoustic chambers and test boxes where reflections occur
- Measurements in unpredictable sound field conditions
- Flush mounting
- Production tests systems
- Inside an acoustic coupler (pressure field)
- Reference microphone for tuning of microphone arrays and active noise-cancelling systems
- Capacitance
- pF
- Diameter
- 1/4
- Dyn. range
- 29 – 146 dB
- Freq. range
- 20 – 20000 Hz
- Inherent noise
- 29 dB A
- Lower limiting frequency -3dB
- 6 Hz
- Optimised
- Pressure Field
- Polarization
- Prepolarized
- Polarization voltages
- V
- Pressure coefficient
- -0.0015 dB/kPa
- Sensitivity
- 11 mV/Pa
- Temperature coefficient
- 0.015 dB/ºC
- Temperature range
- -20 – 80 ℃
- Venting
- Rear
- Weight
- gram
- Sound field
- Pressure-field
- Input type
- CCLD IEPE
- Microphone type
- Pressure Field