PCB-378A04
zoom_out_map

PCB-378A04

  • 1/2 - ICP® - ultra low noise" precision microphone for free-field applications,
  • equivalent input noise dB(A) only 5.5,
  • combination of microphone capsule PCB 377A04 and
    preamplifier PCB 426E01,
  • sensitivity 450 mV / PA,
  • Dynamic range > 100 dB,
  • frequency range 10... 20,000 Hz,
  • BNC connector,
  • calibrated system
basic data
Nominal diameter of microphone 1/2 "
application free-field
Sensitivity 450 mV / PA [6]
sensitivity (±2 dB) -7 dB in relation to 1 V / PA [6]
frequency range (±2. dB) 10 … 16,000 Hz
frequency range (±4 dB) 16,000 … 20,000 Hz
lower limiting frequency (-3 dB) 2 … 5 Hz
noise 5.5 dB(A) in relation to 20 µPa [4]
noise < 6.5 dB(A) in relation to 20 µPa
Dynamic range (for THD ≤ 3%) > 80 dB in relation to 20 µPa [1]
dynamic range (for THD ≤ 3%) > 100 dB in relation to 20 µPa [2]
maximum SPL (peak) 130 dB in relation to 20 µPa [5] [4]
TEDS Chip by default integratedt [3]
conditions
temperature range (operation) 14 … 176 ° F 10 … 80 ° C
Temperature coefficient of sensitivity 0,005 dB/°F 0.009 dB / ° C [6]
influence of static pressure -0.013 dB/kPa [6]
Humidity coefficient of sensitivity ±. 001 dB/% RH [6]
technical characteristics
polarization voltage 0 V [7]
Constant power supply 4 … 20 mA
Bias voltage 12 … 16 V DC
Maximum output range ±2 V pk
output impedance < 50 Ω
Physical properties
Housing material stainless steel alloy
Pressure back [8]
electrical connection BNC Jack
Size - diameter (with protection cap) 0.52 in 13.2 mm
size - diameter (without cap) 0.50 in 12.7 mm
Size - height (with cap) 4.03 in 102.2 mm
size - height (without protection cap) 3.99 in 101,2 mm
Mass 1.81 oz 51.3 grams [4]
hints
[1] over the whole frequency range
[2 ] Exceeding 5,000 Hz
[3] TEDS memory in accordance with IEEE PP1451. 4
[4] typically
[5] damage threshold
[6] based on 1,000 Hz
[7] Prepolarized
[8] pressure compensation by the pre
[9] details: see PCB Declaration of conformancePS138
Accessories
ACS-156 calibration a microphone preamplifier combination in anechoic room including review of the Noise -1
PCB-378A04

Specific References

Download

378A04_drawing.PDF

Technical drawing

Download (86.78k)

378A04_manual.PDF

Operating instructions

Download (498.83k)

378A04_specs.PDF

Technical data sheet

Download (32.72k)