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