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Microphones and Acoustics

Frequently Asked Questions

Get your most commonly asked acoustics questions answered.

Section I: Definitions and Terminology
Section II: Microphone Recommendations
Section III: Calibration and Testing
Section IV: Specification Clarifications
Section V: Specialty Microphone Applications
Section VI: Maintenance and Handling

If you don’t see the answer to your question, call our 24/7 SensorLineSM 716-684-0001 to speak with an application engineer or visit Ask the Acoustics Experts.

What is the difference between the LEMO® type and the coaxial cables used with test and measurement microphones?

 A coaxial cable is designed to be used with an ICP® type prepolarized microphone or accelerometer. The coaxial cable houses a conductor enclosed within a shield (ground.) The connector ends are generally BNC, SMB or 10-32 (microdot) connectors. A LEMO® cable is designed for externally polarized microphone applications. While the coaxial cables are very cost effective (typically, range ¼ to 1/10th the price of the LEMO® cables) and can be run long distances with minimal loss of signal, the LEMO® cables offer flexibility to carry multiple signals., The is necessary for 200V power supplies, mV output signals, and power for heaters, etc. For externally polarized applications, the most popular is a 7-pin LEMO® connector and cable.

What is the difference between the LEMO® type and the coaxial cables used with test and measurement microphones?

 A coaxial cable is designed to be used with an ICP® type prepolarized microphone or accelerometer. The coaxial cable houses a conductor enclosed within a shield (ground.) The connector ends are generally BNC, SMB or 10-32 (microdot) connectors. A LEMO® cable is designed for externally polarized microphone applications. While the coaxial cables are very cost effective (typically, range ¼ to 1/10th the price of the LEMO® cables) and can be run long distances with minimal loss of signal, the LEMO® cables offer flexibility to carry multiple signals., The is necessary for 200V power supplies, mV output signals, and power for heaters, etc. For externally polarized applications, the most popular is a 7-pin LEMO® connector and cable.