G.R.A.S. 43AF 1'' 6cc Coupler Kit According to IEC 60318-3

Connection: 200 V/LEMO
Volume: 6 cc
Dyn range: 14 dB(A) to 146 dB
ANSI: S3.7
IEC: 60318-3

The G.R.A.S. 43AF Artificial Ear is a complete test jig for acoustically testing telephone handsets and earphones and complies with ANSI S 3.7 – 1995 – American National Standard for Testing Earphones.:

Theoretical dynamic range lower limit with G.R.A.S. preamplifier dB(A) 14
Theoretical dynamic range upper limit with G.R.A.S. preamplifier @ +28 V / ±14 V power supply dB 134
Theoretical dynamic range upper limit with G.R.A.S. preamplifier @ +120 V / ±60 V power supply dB 146
Set sensitivity @ 250 Hz (±2 dB) mV/Pa 50
Set sensitivity @ 250 Hz (±2 dB) dB re 1V/Pa -26
Coupler volume 6 ccm
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
IEC standard 60318-3 (former 60303)
ITU-T recommondations P.380
CE/RoHS compliant/WEEE registered Yes/Yes/Yes
Connector type 3 m 7-pin LEMO
Weight g / oz 1.75 / 61.729

Included

G.R.A.S. RA0075 NBS 9A Coupler
G.R.A.S. RA0076 Thread Adapter
G.R.A.S. 40EN 1" Microphone
G.R.A.S. 26AC ¼" Preamplifier
G.R.A.S. RA0052 Test Jig

Optional

G.R.A.S. 12AK Power Module
G.R.A.S. 42AA Pistonphone

Miscellaneous

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