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BS 5944-5 - Measurement of airborne noise from hydraulic fluid power systems and components - Part 5: Simplified method of determining sound power levels from pumps using an anechoic chamber
July 31, 1985 - BSI

Describes simplified procedures for the determination of the sound power levels of a hydraulic fluid power pump under controlled conditions of installation and operation using a quadrispherical microphone array in an anechoic chamber. These procedures pro

SAE J1400 - (R) Laboratory Measurement of the Airborne Sound Barrier Performance of Flat Materials and Assemblies
July 1, 2017 - SAE

This SAE Recommended Practice presents a test procedure for determining the airborne sound insulation performance of materials and composite layers of materials commonly found in mobility, industrial and commercial products under conditions of representative size and sound incidence so as to allow...

DS/ISO 362-3 - Measurement of noise emitted by accelerating road vehicles – Engineering method – Part 3: Indoor testing M and N categories
July 6, 2016 - DS

ISO 362-3:2016 specifies an engineering method for measuring the noise emitted by road vehicles of categories M and N by using a semi anechoic chamber. The specifications are intended to achieve an acoustical correlation between testing the exterior noise of road vehicles in a semi...

ISO 362-3 - Measurement of noise emitted by accelerating road vehicles - Engineering method - Part 3: Indoor testing M and N categories
July 1, 2016 - ISO

This part of ISO 362 specifies an engineering method for measuring the noise emitted by road vehicles of categories M and N by using a semi anechoic chamber. The specifications are intended to achieve an acoustical correlation between testing the exterior noise of road vehicles in a...

ANSI C63.7 - American National Standard Guide for Construction of Test Sites for Performing Radiated Emission Measurements
January 1, 2015 - IEEE

This guide provides information on construction of radiated emission test facilities in the frequency range of 30 MHz to 40 GHz. Standardized site validation methods above 18 GHz remain unavailable at present, however the changes in this edition are considered appropriate guidance for use up to 40...

SAE J1113-27 - Electromagnetic Compatibility Measurements Procedure for Vehicle Components - Part 27 - Immunity to Radiated Electromagnetic Fields - Mode Stir Reverberation Method
June 1, 2012 - SAE

Vehicle electrical/electronic systems may be affected when immersed in an electromagnetic field generated by sources such as radio and TV broadcast stations, radar and communication sites, mobile transmitters, cellular phones, etc. The reverberation method is used to evaluate the immunity of...

SAE J1113-28 - Electromagnetic Compatibility Measurements Procedure for Vehicle Components—Part 28— Immunity to Radiated Electromagnetic Fields—Reverberation Method (Mode Tuning)
June 1, 2010 - SAE

Vehicle electrical/electronic systems may be affected when immersed in an electromagnetic field generated by sources such as radio and TV broadcast stations, radar and communication sites, mobile transmitters, cellular phones, etc. Reverberation method is used to evaluate the immunity of electronic...

DS/EN 62431 - Reflectivity of electromagnetic wave absorbers in millimetre wave frequency - Measurement methods
January 12, 2009 - DS

This Standard specifies the measurement methods for the reflectivity of electromagnetic wave absorbers (EMA) for the normal incident, oblique incident and each polarized wave in the millimetre-wave range. In addition, these methods are also equally effective for the reflectivity measurement of...

ANSI/ASA S12.54/ISO 3744 - American National Standard Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane - Nationally Adopted International Standards
March 1, 2011 - ASA

General This American National Standard specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in an environment that approximates to an acoustic free field...

BS 5944-3 - Measurement of Airborne Noise from Hydraulic Fluid Power Systems and Components Part 3: Guide to the Application of Part 1 and Part 2
November 28, 1980 - BSI

Describes a series of recommended techniques which are designed to enable reliable measurements of hydraulic pump and motor airborne noise to be taken using an anechoic chamber, in accordance with Parts 1 and 2 of this standard.

ANSI/ASA S3.4 - AMERICAN NATIONAL STANDARD Procedure for the Computation of Loudness of Steady Sounds
May 24, 2007 - ASA

This standard specifies a procedure for calculating the monaural and binaural loudness experienced by listeners with normal hearing under the following conditions: Listening conditions. The standard applies to three listening conditions: free field with a frontal incidence, diffuse field, or...

IEEE 1128 - Recommended Practice for Radio-Frequency (RF) Absorber Evaluation in the Range of 30 MHz to 5 GHz
January 13, 1998 - IEEE

The purpose of this recommended practice is to recommend realistic and repeatable criteria, as well as recommended test methods, to characterize the absorption properties of typical anechoic chamber linings applied to a metallic surface. This recommended practice covers the parameters...

IEEE 139 - Recommended Practice for the Measurement of Radio Frequency Emission from Industrial, Scientific, and Medical (ISM) Equipment Installed on User's Premises
June 9, 1988 - IEEE

This document describes equipment inspection and radio frequency (rf) electromagnetic field measurement procedures for evaluation of rf industrial, scientific, and medical (ISM) equipment installed in the user's facility. The term, "ISM equipment," as used here, includes equipment that generates rf...

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