G.R.A.S. 43AH CCP Ear Simulator for Production Testing Based on ITU-T Rec. P57 Type 3.2 Low-leak

Connection: 0 V/CCP
Volume: Complex
Dyn range: 25 dB(A) to 150 dB
ANSI: S3.7
IEC: 60318-1 & -2
  • 43AH CCP Ear Sim Prod Test ITU-T P57 3.2 LL
  • 43AH CCP Ear Sim Prod Test ITU-T P57 3.2 LL

43AH consists of the ITU-T Rec. P57 Type 2 Ear Simulator and Type 3.2 Simplified Low-leak Pinna Simulator and is designed for making ITU-T standardized tests of telephone handsets, receivers and receiver/loudspeaker modules on the production line.

Besides the ear and pinna simulators, G.R.A.S. 43AH includes a detachable front-plate that can be machined to make well-defined testing on various receiver related items. A calibration adapter to be used with G.R.A.S. 42AA Pistonphone/G.R.A.S. 42AP Pistonphone is included.

43AH can also be delivered with customized front plates that will enable leakage-controlled testing according to your specific needs.


Theoretical dynamic range lower limit with G.R.A.S. preamplifier dB(A) 25
Theoretical dynamic range upper limit with G.R.A.S. CCP preamplifier dB 150
Set sensitivity @ 250 Hz (±2 dB) mV/Pa 12
Set sensitivity @ 250 Hz (±2 dB) dB re 1V/Pa -38.5
Coupler volume Complex
Resonance frequency kHz 0.713
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 0.8 / 28.219


G.R.A.S. RA0045-S1 IEC 60711 Ear Simulator, Prepol.
G.R.A.S. 26CB ¼'' CCP Preamplifier
RS0010 Generic Adapter Ring
RA0119 Pistonphone Adapter


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