Model Number
378A21
ICP MICROPHONE SYSTEM
Revision: C
ECN #: 45005
[6]
Performance
ENGLISH
SI
Nominal Microphone Diameter
1/2"
1/2"
Frequency Response Characteristic
Random Incidence Random Incidence
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(± 2 dB)
4 to 25,000 Hz
4 to 25,000 Hz
Lower Limiting Frequency(-3 dB)
1.0 to 2.4 Hz
1.0 to 2.4 Hz
Inherent Noise
22 dB(A) re 20
µPa
22 dB(A) re 20 µPa
[2]
Dynamic Range(3% Distortion Limit)
150 dB re 20 µPa
150 dB re 20 µPa
[2]
TEDS Compliant
Yes
Yes
[4]
Environmental
Temperature Range(Operating)
-40 to +176 °F
-40 to +80 °C
Temperature Coefficient of Sensi14 to +158°F (-10 to +70°C))
0.003 dB/°F
0.006 dB/°C
[2][3]
Static Pressure Coefficient
-0.007 dB/kPa
-0.007 dB/kPa
[2][3]
Humidity Coefficient of Sensitivity(0 to 100%, non-condensing)
0.002 dB/%RH
0.002 dB/%RH
[3][2]
Influence of Axial Vibration(0.1g (1 m/s²))
67 dB re 20 µPa
67 dB re 20 µPa
[2]
Electrical
Polarization Voltage
0 V
0 V
[1]
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(Grid)
0.5 - 60 UNS
0.5 - 60 UNS
Size (Diameter x Height)(with grid)
0.52 in x 3.47 in
13.2 mm x 88.3
mm
Size (Diameter x Height)
(without grid)
0.50 in x 3.46 in
12.7 x 87.8 mm
Weight
1.59 oz
45 gm
[2]
All specifications are at room temperature unless otherwise specified.
In the interest of constant product improvement, we reserve the right to change specifications without notice.
ICP
®
is a registered trademark of PCB Group, Inc.
OPTIONAL VERSIONS
Optional versions have identical specifications and accessories as listed for the standard model
except where noted below. More than one option may be used.
NOTES:
[1] Prepolarized
[2] Typical.
[3] re 250 Hz
[4] TEDS Capable Digital Communication, compliant with IEEE 1451.4
[5] Venting through Preamp.
[6] See PCB Declaration of Conformance PS064 for details.
SUPPLIED ACCESSORIES:
Model ACS-63 Calibration (with TEDS) of Precision Condenser Microphones and Preamplifiers
together (mated pair). (1)
Entered: LK
Engineer: MT
Sales: MV
Approved: MT
Spec Number:
Date: 10/13/2016
Date: 10/13/2016
Date: 10/13/2016
Date: 10/13/2016
62323
3425 Walden Avenue, Depew, NY 14043
Phone: 716-684-0001
Fax: 716-684-0987
E-Mail: [email protected]