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PCB Piezotronics 378B20 Installation And Operating Manual

Icp microphone system
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Model 378B20
ICP Microphone System
Installation and Operating Manual
This manual contains the 377B20, 426E01 installation and operating manuals that
comprise a Model 378B20 ICP Microphone System kit.
For assistance with the operation of this product,
contact PCB Piezotronics, Inc.
Toll-free: 800-828-8840
24-hour SensorLine: 716-684-0001
Fax: 716-684-0987
E-mail: info@pcb.com
Web: www.pcb.com

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Summary of Contents for PCB Piezotronics 378B20

  • Page 1 ICP Microphone System Installation and Operating Manual This manual contains the 377B20, 426E01 installation and operating manuals that comprise a Model 378B20 ICP Microphone System kit. For assistance with the operation of this product, contact PCB Piezotronics, Inc. Toll-free: 800-828-8840...
  • Page 2 Returning Equipment – Following the equipment to PCB Piezotronics for these procedures will insure that your repair. User servicing or repair is not returned materials are handled in the recommended and, if attempted, may most expedient manner.
  • Page 3 PCB Piezotronics, Inc. Warranty – All equipment and repair 3425 Walden Ave. services provided by PCB Piezotronics, Depew, NY 14043 USA Inc. are covered by a limited warranty Toll-free: (800) 828-8840 against defective...

  • Page 4: Table Of Contents

    PRODUCT GUIDE 377 SERIES MICROPHONES 426 SERIES PREAMPLIFIERS Contents: Introduction ................1 Standards ..................1 Setting up a Microphone Measurement System ......1 Taking Measurements ..............2 Accessories ................. 3 Maintenance ................3 Calibration .................. 4 Warranty and Service ..............4 1.0 Introduction Thank you for your purchase of a PCB high quality microphone.

  • Page 5: Taking Measurements

    Externally Polarized Microphone System Prepolarized Microphone System 4.0 Taking Measurements The following formula is used to calculate the pressure measured by the microphone from the output volt- age signal. The sensitivity of a microphone is typically measured at 250 Hz. Pressure (Pa) = Voltage (mV) / Sensitivity (mV/Pa).

  • Page 6: Accessories

    Temperature and pressure will affect the sensitivity of a microphone but these effects can be accounted for by adjusting the recorded microphone values using the coefficients specified for each microphone model. Simply calculate the difference in temperature and ambient pressure from those recorded during calibration and multiply this value by the proper coefficient to determine the sensitivity offset.

  • Page 7: Calibration

    8.0 Warranty and Service All equipment and repair services provided by PCB Piezotronics, Inc. are covered by a warranty against defective material and workmanship under a Total Customer Satisfaction policy. If, at any time, for any reason, you are not completely satisfied with any PCB product, PCB will repair, replace, or exchange it at no charge.
  • Page 8 Model Number Revision: A ICP MICROPHONE SYSTEM 378B20 ECN #: 42896 Performance ENGLISH OPTIONAL VERSIONS Nominal Microphone Diameter 1/2" 1/2" Optional versions have identical specifications and accessories as listed for the standard model except where noted below. More than one option may be used.
  • Page 10 Model 377B20 Precision Condenser Microphone Installation and Operating Manual For assistance with the operation of this product, contact PCB Piezotronics, Inc. Toll-free: 800-828-8840 24-hour SensorLine: 716-684-0001 Fax: 716-684-0987 E-mail: info@pcb.com Web: www.pcb.com...
  • Page 11 Returning Equipment – Following the equipment to PCB Piezotronics for these procedures will insure that your repair. User servicing or repair is not returned materials are handled in the recommended and, if attempted, may most expedient manner.
  • Page 12 PCB Piezotronics, Inc. Warranty – All equipment and repair 3425 Walden Ave. services provided by PCB Piezotronics, Depew, NY 14043 USA Inc. are covered by a limited warranty Toll-free: (800) 828-8840 against defective...
  • Page 13 PRODUCT GUIDE 377 SERIES MICROPHONES 426 SERIES PREAMPLIFIERS Contents: Introduction ................1 Standards ..................1 Setting up a Microphone Measurement System ......1 Taking Measurements ..............2 Accessories ................. 3 Maintenance ................3 Calibration .................. 4 Warranty and Service ..............4 1.0 Introduction Thank you for your purchase of a PCB high quality microphone.
  • Page 14 Externally Polarized Microphone System Prepolarized Microphone System 4.0 Taking Measurements The following formula is used to calculate the pressure measured by the microphone from the output volt- age signal. The sensitivity of a microphone is typically measured at 250 Hz. Pressure (Pa) = Voltage (mV) / Sensitivity (mV/Pa).
  • Page 15 Temperature and pressure will affect the sensitivity of a microphone but these effects can be accounted for by adjusting the recorded microphone values using the coefficients specified for each microphone model. Simply calculate the difference in temperature and ambient pressure from those recorded during calibration and multiply this value by the proper coefficient to determine the sensitivity offset.
  • Page 16 8.0 Warranty and Service All equipment and repair services provided by PCB Piezotronics, Inc. are covered by a warranty against defective material and workmanship under a Total Customer Satisfaction policy. If, at any time, for any reason, you are not completely satisfied with any PCB product, PCB will repair, replace, or exchange it at no charge.
  • Page 17 Model Number Revision: K PRECISION CONDENSER MICROPHONE 377B20 ECN #: 42896 Performance ENGLISH OPTIONAL VERSIONS Nominal Microphone Diameter 1/2" 1/2" Optional versions have identical specifications and accessories as listed for the standard model Frequency Response Characteristic Random Incidence Random Incidence except where noted below.
  • Page 18 PCB Piezotronics Inc. claims proprietary rights in REVISIONS the information disclosed hereon. Neither it nor any reproduction thereof will be disclosed to others DESCRIPTION without the written consent of PCB Piezotronics Inc. RELEASED TO DRAFTING DIAPHRAGM  .52 [13.2] ...
  • Page 19 Model 426E01 Microphone Preamplifier Installation and Operating Manual For assistance with the operation of this product, contact PCB Piezotronics, Inc. Toll-free: 800-828-8840 24-hour SensorLine: 716-684-0001 Fax: 716-684-0987 E-mail: info@pcb.com Web: www.pcb.com...
  • Page 20 Returning Equipment – Following the equipment to PCB Piezotronics for these procedures will insure that your repair. User servicing or repair is not returned materials are handled in the recommended and, if attempted, may most expedient manner.
  • Page 21 PCB Piezotronics, Inc. Warranty – All equipment and repair 3425 Walden Ave. services provided by PCB Piezotronics, Depew, NY 14043 USA Inc. are covered by a limited warranty Toll-free: (800) 828-8840 against defective...
  • Page 22 PRODUCT GUIDE 377 SERIES MICROPHONES 426 SERIES PREAMPLIFIERS Contents: Introduction ................1 Standards ..................1 Setting up a Microphone Measurement System ......1 Taking Measurements ..............2 Accessories ................. 3 Maintenance ................3 Calibration .................. 4 Warranty and Service ..............4 1.0 Introduction Thank you for your purchase of a PCB high quality microphone.

  • Page 23: Taking Measurements

    Externally Polarized Microphone System Prepolarized Microphone System 4.0 Taking Measurements The following formula is used to calculate the pressure measured by the microphone from the output volt- age signal. The sensitivity of a microphone is typically measured at 250 Hz. Pressure (Pa) = Voltage (mV) / Sensitivity (mV/Pa).

  • Page 24: Accessories

    Temperature and pressure will affect the sensitivity of a microphone but these effects can be accounted for by adjusting the recorded microphone values using the coefficients specified for each microphone model. Simply calculate the difference in temperature and ambient pressure from those recorded during calibration and multiply this value by the proper coefficient to determine the sensitivity offset.

  • Page 25: Calibration

    8.0 Warranty and Service All equipment and repair services provided by PCB Piezotronics, Inc. are covered by a warranty against defective material and workmanship under a Total Customer Satisfaction policy. If, at any time, for any reason, you are not completely satisfied with any PCB product, PCB will repair, replace, or exchange it at no charge.

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