The RA0038 is for use in the acoustical measurements of insert type hearing aids and earphones.
It complies with the requirements of
- IEC 60318-5 (60126) 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by ear inserts and
- ANSI S3.7-1995 American National Standard for Coupler Calibration of Earphones.
To avoid possibly damaging the microphone, the RA0038 can be used with a microphone fitted with its protection grid, e.g. a G.R.A.S. 40AG and a suitable preamplifier, like G.R.A.S. 26AS which is a 1/4" very short preamplifier with 3 m integrated cable.
The RA0038 is also part of the G.R.A.S. 43AB Artificial Ear.
|Coupler volume||2 ccm|
|Temperature range, operation||°C / °F||0|
|Humidity range non condensing||% RH||0 to 95|
|IEC standard||60318-5 (former 60126)|
|CE/RoHS compliant/WEEE registered||Yes/Yes, Yes|
|Weight||g / oz||50 / 1.76|