Model Number
378C 20
ICP MICROPHONE SYSTEM
Revision: F
ECN #: 50805
P erfo rm an ce
EN G L ISH
SI
Nominal Microphone Diameter
1/2"
1/2"
Frequency Response Characteristic
Random Incidence
Random Incidence
Sensitivity(± 1.5 dB)
- 26 dB re 1 V/Pa
- 26 dB re 1 V/Pa
[1]
Sensitivity
50 mV/Pa
50 mV/Pa
[1]
Frequency Range(± 2 dB)
3.75 to 16,000 Hz
3.75 to 16,000 Hz
Frequency Range
(± 1 dB)
7 to 6,300 Hz
7 to 6,300 Hz
Lower Limiting Frequency(- 3 dB)
1.0 to 3.0 Hz
1.0 to 3.0
Inherent Noise
16 dB(A) re 20 µPa
16 dB(A) re 20 µPa
[2]
Dynamic Range(3% Distortion Limit)
137 dB re 20 µPa
137 dB re 20 µPa
[2]
TEDS Compliant
Yes
Yes
[3]
En viro n m en tal
Temperature Range(Operating)
-40 to +176 °F
-40 to +80 °C
Temperature Coefficient of Sensi14
to +158°F (-10 to +70°C))
0.005 dB/°F
0.009 dB/°C
[2][1]
Static Pressure Coefficient
- 0.01 dB/kPa
- 0.01 dB/kPa
[2][1]
Humidity Coefficient of Sensitivity(0 to
100%, non-condensing)
± 0.001 dB/%RH
± 0.001 dB/%RH
[1]
Influence of Axial Vibration(0.1g (1 m/s²))
63 dB re 20 µPa
63 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
P h ysical
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 3.62 in
13.2 mm x 91.9 mm
Size (Diameter x Height)
(without grid)
0.50 in x 3.58 in
12.7 mm x 90.9 mm
Weight
1.63 oz
45.8 gm
[2]
[6]
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 Piezotronics, Inc.
OP TION A L VERSION S
Optional versions have identical specifications and accessories as listed for the standard model except
where noted below. More than one option may be used.
N OTES:
[1]re 250 Hz
[2]Typical.
[3]TEDS Capable Digital Communication, compliant with IEEE 1451.4
[4]Prepolarized
[5]Venting through Preamp.
[6]See PCB Declaration of Conformance PS064 for details.
Date: 06/08/2020
Date: 06/08/2020
Date: 06/08/2020
Date: 06/08/2020
59949
Entered: LK
Engineer: MJN
Sales: MV
Approved: NJF
Spec Number:
3425 Walden Avenue, Depew, NY 14043
Phone: 716-684-0001
Fax: 716-684-0987
E-Mail: [email protected]
SU P P L IED A C C ESSORIES:
Model ACS-63 Calibration (with TEDS) of Precision Condenser Microphones and Preamplifiers
together (mated pair). (1)
