378A04美国PCB放大器

378A04美国PCB放大器

378A04美国PCB放大器原装进口、378A04美国PCB放大器一手货源

MICROPHONE AND PREAMPLIFIER, LOWNOISE, 1/2" FREE-FIELD PREPOLARIZED

This model includes a 1/2"microphone cartridge, a mated preamplifier with TEDS, and systemcalibration.

Nominal Microphone Diameter: 1/2"

Frequency Response Characteristic: Free-Field

Frequency Range: (±4dB) 5 to 20000 Hz

Inherent Noise: 5.5 dB(A) re 20 µPa

Dynamic Range: (3% Distortion Limit) >80 dB re 20 µPa

English:SI: 
PERFORMANCENominal Microphone Diameter1/2"1/2"
Frequency Response Characteristic (at 0°incidence)Free-FieldFree-Field
Sensitivity450 mV/Pa450 mV/Pa[2] Sensitivity (±2 dB)-7 dB re 1V/Pa-7 dB re 1 V/Pa[2] Frequency Range (±4 dB)5 to 20000 Hz5to 20000 Hz
Frequency Range (±2 dB)10 to 16000 Hz10 to 16000 Hz
Lower Limiting Frequency (-3 dB)2 to 5 Hz2 to 5 Hz
Inherent Noise5.5 dB(A) re 20 µPa5.5 dB(A) re 20µPa[1] Inherent Noise<6.5 dB(A) re 20 µPa<6.5 dB(A) re20 µPa
Dynamic Range(3% Distortion Limit)>80 dB re 20 µPa>80 dB re20 µPa[4] Dynamic Range(3% Distortion Limit)>100 dB re 20µPa>100 dB re 20 µPa[5] Maximum Sound PressureLevel(Peak)130 dB re 20 µPa130 dB re 20 µPa[1][6] TEDSCompliantYesYes[3] ENVIRONMENTALTemperature Range(Operating)-40 to +176 °F-40 to +80 °C
Temperature Coefficient of Sensitivity (+14 to +122°F (-10 to+50°C))0.005 dB/°F0.009 dB/°C[1][2] Static PressureCoefficient-0.013 dB/kPa-0.013 dB/kPa[1][2] HumidityCoefficient of Sensitivity (0 to , non-condensing)±0.001dB/%RH±0.001 dB/%RH[2] ELECTRICALPolarization Voltage0 V0V[7] Excitation Voltage20 to 32 VDC20 to 32 VDC
Constant Current Excitation4 to 20 mA4 to 20 mA
Output Bias Voltage12 to 16 VDC12 to 16 VDC
Maximum Output Voltage±2 Vpk±2 Vpk
Output Impedance<50 Ohm<50 Ohm
PHYSICALHousing MaterialStainless AlloyStainless Alloy
VentingRearRear[8] Electrical ConnectorBNC JackBNC Jack
Size - Diameter (with grid)0.52 in13.2 mm
Size - Diameter (without grid)0.50 in12.7 mm[9] Size - Height(with grid)4.02 in102.1 mm
Size - Height (without grid)3.99 in101.2 mm
Weight1.81 oz51.3 gm[1] 

All specifications are at room temperature unless otherwisespecified.

Product Notes

[1] Typical.
[2] re 1 kHz
[3] TEDS Capable Digital Memory and Communication, compliant withIEEE 1451.4
[4] In the total frequency range.
[5] Below 5 kHz
[6] Non-destructive
[7] Prepolarized
[8] Venting through Preamp.
[9] Protection grid permanently affixed to the microphone.
[10] See PCB Declaration of Conformance PS138 for details.

Accessories:

SuppliedACS-156Calibration of microphone with preamplifier in ananechoic chamber to include noise floor verification(1)

Optional Versions:

No optional versions