The GRAS 43AA-S2 CCP Ear Simulator Kit with TEDSis a complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 60318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, objective measuring apparatus: artificial ears.
Technology
The GRAS 43AA-S2 CCP Ear Simulator Kit according to IEC 60318-1 & -2 is a complete test jig for acoustical measurements on telephone handsets and earphones in accordance with:
- IEC60318-1 & -2 Electroacoustics – Simulators of human head and ear – Part 1: Ear simulator for the calibration of supraaural earphones, 1998-07
- ITU-T Recommendation P.57 (08/96) Series P: Telephone transmission Quality, Objective measuring apparatus: Artificial Ears
It consists of the following components:
- IEC 60318-1 & -2 GRAS RA0039 Ear Simulator
- GRAS 40AO ½" Pressure Microphone
- GRAS 26CB ¼" Preamplifier
- GRAS RA0052 Test Jig
- Mounting plates for circum-aural and supra-aural headphones
The Test Jig has an adjustable spring-loaded arm to exert a variable force on the test object.
An externally polarized version is available, GRAS 43AA.
A version with a GRAS 26AB. Preamplifier is available, GRAS 43AA-S3.
TEDS Compatibility
43AA-S2 is IEEE 1451.4 TEDS v. 1.0 compliant. If your measurement platform supports Transducer Electronic Data Sheets (TEDS), you will be able to read and write data like properties and calibration data.
Specifications
| Parameter |
Unit |
Value |
| Theoretical lower dynamic range |
dB(A) |
25 |
| Theoretical upper dynamic range |
dB |
150 |
| Sensitivity @ 250 Hz (±3 dB) |
mV/Pa |
12 |
| Sensitivity @ 250 Hz (±3 dB) |
dB re 1 V/Pa |
-38.5 |
| Operating temperature range |
°C / °F |
-30 – 60 / -22 – 140 |
| Temperature coefficient @ 250 Hz |
dB/°C / dB/°F |
-0.01 / -0.006 |
| Non-condensing humidity range |
% RH |
0 – 80 |
| ANSI standard |
|
S3.7 |
| ITU-T recommendation |
|
Page 57, Type 1 |
| CE / RoHS / WEEE compliance |
|
Yes / Yes / Yes |
| Connector type |
|
BNC |
| Weight |
g / oz |
1.65 / 0.058 |
