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품명: microphone
제조사: PCB
모델: 378A
규격: 1/2
- 제품 상세설명 :
  ENGLISH SI  
Performance
    Nominal Microphone Diameter 1/2" 1/2"  
    Frequency Response Characteristic Free-Field Free-Field  
    Sensitivity 12.6 mV/Pa 12.6 mV/Pa [3] 
    Sensitivity (±2 dB) -38 dB re 1 V/Pa -38 dB re 1 V/Pa [3] 
    Frequency Range (±1 dB) 5 to 16000 Hz 5 to 16000 Hz  
    Frequency Range (±2 dB) 3.15 to 31500 Hz 3.15 to 31500 Hz  
    Frequency Range (±3 dB) 3.15 to 40000 Hz 3.15 to 40000 Hz  
    Lower Limiting Frequency (3 dB) 1.0 to 2.4 Hz 1.0 to 2.4 Hz  
    Inherent Noise 24 dB re 20 µPa 24 dB re 20 µPa  
    Inherent Noise 21 dB(A) re 20 µPa 21 dB(A) re 20 µPa [2] 
    Dynamic Range >146 dB re 20 µPa >146 dB re 20 µPa  
    TEDS Compliant Yes Yes [1] 
Environmental
    Temperature Range (Operating) -40 to +176 °F -40 to +80 °C  
    Temperature Coefficient of Sensitivity 0.003 dB/°F 0.006 dB/°C [3][2] 
    Static Pressure Coefficient -.007 dB/kPa -.007 dB/kPa [3][2] 
    Humidity Coefficient of Sensitivity 0.002 dB/%RH 0.002 dB/%RH [3][2] 
    Influence of Axial Vibration 66 dB re 20 µPa 66 dB re 20 µPa [2] 
Electrical
    Polarization Voltage 0 V 0 V [4] 
    Excitation Voltage 20 to 30 VDC 20 to 30 VDC  
    Constant Current Excitation 2 to 20 mA 2 to 20 mA  
    Output Bias Voltage 10 to 14 VDC 10 to 14 VDC  
    Maximum Output Voltage ±7 Vpk ±7 Vpk  
    Output Impedance <50 Ohm <50 Ohm  
Physical
    Housing Material Stainless Alloy Stainless Alloy  
    Venting Rear Rear [5] 
    Electrical Connector BNC Jack BNC Jack  
    Mounting Thread (Preamplifier) 0.5 - 60 UNS 0.5 - 60 UNS  
    Size - Diameter (with grid) 0.52 in 13.2 mm  
    Size - Diameter 0.50 in 12.7  
    Size - Height (with grid) 3.47 in 88.3 mm  
    Size - Height (without grid) 3.46 in 87.8 mm  
    Weight 1.59 oz 45 gm [2]