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

Connection: 0 V/CCP
Volume: Complex
Dyn range: 25 dB(A) to 150 dB
ANSI: S3.7

43AI consists of the ITU-T Rec. P57 Type 2 Ear Simulator and Type 3.2 Simplified High-leak Pinna Simulator for testing leak tolerant receivers

Besides the ear and pinna simulators, G.R.A.S. 43AI 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.


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 1.570
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
CE/RoHS compliant/WEEE registered Yes/Yes/Yes
Connector type Microdot 10/32
Weight g / oz 0.8 / 28.219


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RS0010 Generic Adapter Ring
RA0119 Pistonphone Adapter


G.R.A.S. AA0070 3 m Microdot - BNC cable