Model Number
HT378C20
Preliminary ICP MICROPHONE SYSTEM
Revision: NR
ECN #:
Performance
ENGLISH
SI
Nominal Microphone Diameter
1/2
1/2
Frequency Response Characteristic
Random Incidence Random Incidence
Open Circuit Sensitivity
50 mV/Pa
50 mV/Pa
[3]
Open Circuit Sensitivity
(+/-1.5 dB)
-26 dB re 1 V/Pa
-26 dB re 1 V/Pa
[3]
Frequency Range(+/-1 dB)
6 to 6300 Hz
6 to 6300 Hz
Frequency Range
(+/-2 dB)
3.5 to 16,000 Hz
3.5 to 16,000 Hz
Lower Limiting Frequency(-3 dB)
1.0 to 2.75 Hz
1.0 to 2.75 Hz
Inherent Noise(Linear)
<32 dB re 20 µPa
<32 dB re 20 µPa
Inherent Noise
<17 dB(A) re 20 µPa<17 dB(A) re 20 µPa
Dynamic Range(3% Distortion Limit)
>137 dB re 20 µPa >137 dB re 20 µPa
Dynamic Range
(Maximum without Clipping)
140 dB re 20 µPa
140 dB re 20 µPa [2][4]
TEDS Compliant
Yes
Yes
[5]
Environmental
Temperature Range(Operating)
-40 to +248 °F
-40 to +120 °C
Temperature Coefficient of Sensi14 to +158°F (-10 to +70°C))
0.005 dB/°F
0.009 dB/°C
[2][3]
Static Pressure Coefficient
-0.01 dB/kPa
-0.01 dB/kPa
[2][3]
Humidity Coefficient of Sensitivity(0 to 100%, non-condensing)
± 0.001 dB/%RH
± 0.001 dB/%RH
[3]
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
[1]
Excitation Voltage
20 to 32 VDC
20 to 32 VDC
Constant Current Excitation
2 to 10 mA
2 to 10 mA
Output Bias Voltage
10 to 14 VDC
10 to 14 VDC
Maximum Output Voltage
+/-7 Vpk
+/-7 Vpk
Output Impedance
<55 Ohm
<55 Ohm
Physical
Housing Material
Stainless Alloy
Stainless Alloy
Venting
Rear
Rear
[6]
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 3.88 in
13.2 mm x 98.6 mm
Size (Diameter x Height)
(without grid)
0.50 in x 3.84 in
12.7 mm x 97.5 mm
Weight
1.74 oz
49.2 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.
TLD
- TEDS Capable of Digital Memory and Communication Compliant with IEEE 1451.4
Optional Accessory : Model ACS-63 Calibration (with TEDS) of Precision Condenser
Microphones and Preamplifiers together (mated pair). (1) replaces Model ACS-42
NOTES:
[1]Prepolarized
[2]Typical.
[3]re 250 Hz
[4]Peak.
[5]TEDS Capable Digital Memory and Communication, compliant with IEEE P1451.4
[6]Venting through Preamp.
[7]See PCB Declaration of Conformance PS064 for details.
SUPPLIED ACCESSORIES:
Model ACS-42 Calibration of microphone with preamplifer (1)
3425 Walden Avenue, Depew, NY 14043
Phone: 716-684-0001
Fax: 716-684-0987
E-Mail: [email protected]
[7]
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.
Entered: AP
Engineer: NJL
Sales: MV
Approved: MT
Spec Number:
Date: 10/15/2014
Date: 10/15/2014
Date: 10/15/2014
Date: 10/15/2014
59950
Summary of Contents for HT378C20
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