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Operating Deflection Shapes (ODS) Analysis

Nuclear power plant after sunset. Dusk landscape with big chimneys.

Mobility Testing

In mobility testing, accelerance, mobility and compliance functions are calculated. For structures with well-separated modes, estimation of natural frequencies and damping ratios is possible. Often done during troubleshooting using hammer testing.

rail illustration outline

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

rail illustration outline

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

Operating Deflection

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

Mobility Testing

Mobility Testing

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

rail illustration outline

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

rail illustration outline

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

rail illustration outline

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

rail illustration outline

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

Operating Deflection

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

rail illustration outline

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

mechanic checking the motor of a car

Operating Deflection Shapes (ODS) Analysis

A versatile application for determining the vibration patterns of machinery and structures under various operating conditions such as engine speed and ambient forces. Our ODS systems guide you through the entire measurement and analysis process.

engineer with glasses working on the computer with two screens showing the durability simulation and analysis software tools

Mobility Testing

In mobility testing, accelerance, mobility and compliance functions are calculated. For structures with well-separated modes, estimation of natural frequencies and damping ratios is possible. Often done during troubleshooting using hammer testing.

Calibration system Type 9757

Calibration system Type 9757

Type 9757

Designed for the low-frequency frequency response of measurement microphones and other types of microphone.

Type 9757

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A microphone calibration system for determining the low-frequency frequency response of measurement microphones and other types of microphone. The system, Type 9757, applies a specially designed low-frequency comparison coupler for the measurements.

Type 9757 is a calibration system designed to measure the frequency response of measurement microphones to very low frequencies. A specially designed, low-frequency comparison coupler allows the microphone to be fully inserted into the coupler cavity thereby ensuring that the static equalization vent of the microphone can be exposed to the applied sound pressure even for rear-vented microphones. Sound exposure of the vent during calibration is required if the microphone is intended to be used for free-field measurements.

USE SCENARIOS

Low-frequency calibration of measurement microphones

FEATURES

Frequency response calibration by comparison (IEC 61094-5) 0.1Hz to 251Hz
Calibration of open-circuit or loaded frequency response (that is, response with preamplifier)
Pressure-field or free-field calibration (that is, vent exposed to sound pressure)
Dedicated PULSE project for controlling the measurements
Dedicated Excel workbook for result calculation and presentation

Code	Name
-9757-W-004-	Additional items for 9757 Low Frequency
-9757-W-005-	9757 Low Frequency Microphone

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This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.