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Model 377B11

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

Summary of Contents for 377B11

Page 1: ...r 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 2: ...ialized tests including sensitivity at elevated or cryogenic temperatures phase response extended high or low frequency response extended range leak testing hydrostatic pressure testing and others For more information contact your local PCB Piezotronics distributor sales representative or factory customer service representative Returning Equipment If factory repair is required our representatives ...

Page 3: ...ation on particular operating steps The following symbols may be found on the equipment described in this manual This symbol on the unit indicates that high voltage may be present Use standard safety precautions to avoid personal contact with this voltage This symbol on the unit indicates that the user should refer to the operating instructions located in the manual This symbol indicates safety ea...

Page 4: ...E 住房 O O O O O O PCB板 X O O O O O 电气连接器 O O O O O O 压电晶体 X O O O O O 环氧 O O O O O O 铁氟龙 O O O O O O 电子 O O O O O O 厚膜基板 O O X O O O 电线 O O O O O O 电缆 X O O O O O 塑料 O O O O O O 焊接 X O O O O O 铜合金 黄铜 X O O O O O 本表格依据 SJ T 11364 的规定编制 O 表示该有害物质在该部件所有均质材料中的含量均在 GB T 26572 规定的限量要求以下 X 表示该有害物质至少在该部件的某一均质材料中的含量超出 GB T 26572 规定的限量要求 铅是欧洲RoHS指令2011 65 EU附件三和附件四目前由于允许的豁免 CHINA RoHS COMPLIANCE ...

Page 5: ... O Wires O O O O O O Cables X O O O O O Plastic O O O O O O Solder X O O O O O Copper Alloy Brass X O O O O O This table is prepared in accordance with the provisions of SJ T 11364 O Indicates that said hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement of GB T 26572 X Indicates that said hazardous substance contained in at least one of t...

Page 6: ... in which the instrument will be used Whether for legal purposes or for quality assurance programs these standards will help determine the required quality accuracy and consistency of the instrument Standards that correspond to the performance requirements dimensions and characteristics of acoustical components are established for microphones sound level meters calibrators or other related compone...

Page 7: ...powered with a 24V or a 12V phantom power supply but this will limit the maximum output voltage Externally Polarized Microphone System Prepolarized Microphone System Phantom Powered Microphone System The phantom powered preamp may be used with either a or a microphone cartridge by using the adapter provided All IEC 61094 4 compliant microphones can be used with the phantom powered preamp Adapters ...

Page 8: ...tem such as the preamplifier signal conditioner or instrumentation Conversely the Cartridge Thermal Noise CTN specification provides the lowest measurable sound pressure level that can be detected above the electrical noise inherent within the microphone Temperature and pressure will affect the sensitivity of a microphone but these effects can be accounted for by adjusting the recorded microphone ...

Page 9: ... rugged grid cap shown below and as an independent part of a rugged kit to extend the lifespan of the precision measuring device caution should be taken to ensure the delicate diaphragm sensing element remains un touched and safe Use of accessories like windscreens and desiccants will help keep moisture off the microphone and main tain the specified sensitivity level Nose cones will help keep turb...

Page 10: ...dustry standards ensures accurate calibra tion against relevant specifications We also carry a line of acoustic calibrators that can be used to calibrate microphone sensitivity on site as needed Hand calibration of sensitivity for most prepolarized microphones may be performed with a Larson Davis CAL250 or CAL200 or equivalent The CAL250 produces 114 dB SPL at 251 2 Hz The CAL 200 produces either ...

Page 11: ...al Capacitance Polarized 11 pF 11 pF 1 Polarization Voltage 0 V 0 V 2 Physical Housing Material Stainless Alloy Stainless Alloy Venting Rear Rear Mounting Thread Preamplifier 0 4606 60 UNS 11 7 mm 60 UNS Mounting Thread Grid 0 5 60 UNS 12 7 mm 60 UNS Size Diameter x Height with grid 0 52 in x 0 64 in 13 2 mm x 16 2 mm Size Diameter x Height without grid 0 5 in x 0 6 in 12 7 mm x 15 3 mm Weight 0 2...

Page 12: ...LARIZED MICROPHONES DECIMALS XX 03 XXX 010 DECIMALS X 0 8 XX 0 25 JDM 9 14 05 ECB 9 14 05 CCL 9 14 05 1 1 2 2 A A B B 60 15 3 64 16 4 36 9 2 50 12 7 4606 60 UNS 11 7 mm 60 UNS THREADS 52 13 2 47 12 0 48 12 1 5000 60 UNS 12 7mm 60 UNS THREADS DIAPHRAGM WITH GRID CAP WITHOUT GRID CAP 04 1 0 BLACK O RING REVISIONS REV DESCRIPTION DIN NR RELEASED TO DRAFTING 29288 PCB Piezotronics Inc claims proprieta...

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