G.R.A.S. 43AA-S3 Ear Simulator Kit incl. 26AB preamplifier

Connection: 200 V/LEMO
Volume: Complex
Dyn range: 25 dB(A) to 164 dB
ANSI: S3.7
IEC: 60318-1 & -2

The G.R.A.S. 43AA-S3 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:

The Test Jig has an adjustable spring-loaded arm to exert a variable force on the test object.

A prepolarized version is available, G.R.A.S. 43AA-S2.

An externally polarized version with a G.R.A.S. 26AC ¼" preamplifier is available, G.R.A.S. 43AA.

Theoretical dynamic range lower limit with G.R.A.S. preamplifier dB(A) 25
Theoretical dynamic range upper limit with G.R.A.S. preamplifier @ +120 V / ±60 V power supply dB 164
Set sensitivity @ 250 Hz (±2 dB) mV/Pa 12
Set sensitivity @ 250 Hz (±2 dB) dB re 1V/Pa -38.5
Coupler volume Complex
Temperature range, operation °C / °F - 30 to 60 / -22 to 140
Temperature coefficient @250 Hz dB/°C / dB/°F - 0.01 / -0.006
Humidity range non condensing % RH 0 to 80
ANSI standard S3.7
ITU-T recommondations P.57 Type 1
CE/RoHS compliant/WEEE registered Yes/Yes/Yes
Connector type 3 m 7-pin LEMO
Weight g / oz 1.65 / 58.202

Miscellaneous

G.R.A.S. RA0196 High-tension springs (set of two)