GRAS 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 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, GRAS 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 GRAS 42AA Pistonphone/GRAS 42AP Pistonphone is included.

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

TEDS Compatibility

43AH 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.



Theoretical dynamic range lower limit with GRAS preamplifier
Theoretical dynamic range upper limit with GRAS CCP preamplifier
Set sensitivity @ 250 Hz (±2 dB)
Set sensitivity @ 250 Hz (±2 dB)
dB re 1V/Pa
Coupler volume
1260 @ 500 Hz
Resonance frequency
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
ITU-T recommondations
P.57 Type 1
CE/RoHS compliant/WEEE registered
Connector type
3 m 7-pin LEMO
g / oz
0.8 / 28.219

GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.

Ordering info


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


GRAS RA0196 High-tension springs (set of two)

GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.

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