The GRAS IEC 318 RA0039 Ear Simulator is an ear simulator with an input impedance closely resembling that of an average human ear. When the RA0039 is coupled to a sound source, the impedance will load the sound source similar to the loading caused by the human ear. The RA0039 meets the requirements of IEC 60318-1:1998 Electroacoustics - "Simulators of human head and ear - Part 1: Ear simulator for the calibration of supra-aural earphones".
Technology
The RA0039 is measured and calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, Objective measuring apparatus: Artificial ears”.
The RA0039 is also part of the GRAS 43AA Artificial Ear and GRAS 43AD Artificial Ear.
Specifications
| Polarization/Connection |
– |
0 V / CCP |
| Non-condensing humidity range |
% Relative Humidity |
0 to 95 |
| ANSI standard |
– |
S3.7 |
| IEC standard |
– |
60318-1 (formerly 60318) |
| ITU-T recommendation |
– |
Page 57 |
| CE/RoHS/WEEE compliant |
– |
Yes/Yes, Yes |
| Weight |
g/oz |
155 / 5.47 |
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Acoustic input impedance of the RA0039
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice
