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BRUEL & KJAER 2245 User Manual

BRUEL & KJAER 2245
110 pages
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Sound Level Meter Type 2245
with Microphone Type 4966
From Hardware Version 1.0
Instruction Manual

Table of Contents

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BRUEL & KJAER 2245 Specifications

General IconGeneral
TypeSound Level Meter
Weighting NetworksA, C, Z
MicrophonePrepolarized Free-field 1/2" Microphone
StandardsIEC 61672-1
Data StorageInternal memory
DisplayColor LCD
BatteryLithium-Ion
Time WeightingFast, Slow, Impulse
DetectorRMS
Operating Temperature-10°C to +50°C
Power Supplyexternal power supply

Summary

Sound Level Meter Basic Operation and Setup

Powering On/Off and Initial Setup

Instructions for switching the meter on/off and initial setup.

Measurement Settings Configuration

Configuring measurement parameters like input, control, broadband, and spectrum.

Calibration and Status Monitoring

Viewing calibration history, status, and performing acoustic calibration procedures.

Measurement Execution and Data Viewing

Starting, pausing, stopping measurements, and viewing results including overload/underrange.

Specific Measurement Techniques

Measuring low-level sounds, static pressure, vibration, and frequency weightings.

Sound Level Meter Conformance Testing

Calibration for Pattern Evaluation and Periodic Tests

Addresses calibration requirements for pattern evaluation and periodic tests.

Electrical Substitute for Microphones

Explains how to use and calibrate the electrical substitute for microphones.

EMC Test Procedures Introduction

Introduces procedures for EMC (Electromagnetic Compatibility) testing.

Normal Mode of Operation During EMC Test

Details normal operating modes for emission and immunity testing.

Sound Level Meter Specifications and Standards Compliance

Type 4966 Microphone Specifications

Provides specifications for the Type 4966 microphone, including sensitivity and capacitance.

Directional Response Analysis

Describes how directional responses and sensitivity variations are presented.

Self-Generated Noise Characteristics

Details maximum, typical broadband noise, and noise spectra.

Measurement Ranges

Details maximum sound level, total range, primary indicator, indicator, linearity, pulse, operating, and peak ranges.

Spectrum Analysis and Filter Frequencies

Covers spectrum analysis, 1/1-octave, and 1/3-octave band frequencies.

Digital Interfaces and Power Supply

Explains digital interfaces, charge/power interface, external adapter, and battery.

Appendix A: Electrical Frequency Responses

Appendix A: Free-field Frequency Responses

Appendix A: Diffuse-field Frequency Responses

Appendix A: Directional Responses

Directional Response Overview

Directional responses normalized to reference, including sensitivity variations.

Appendix A: Periodic Testing of Acoustical Frequency Responses

Periodic Testing of Acoustical Frequency Responses

Provides correction data for acoustical tests with a calibrator.

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