Coupler cavity
During tests in the test chamber, the hearing instrument is connected to a 2cc coupler cavity manufactured in accordance
with the ANSI standard. Alternatively, you can use an ear simulator.
Note
•
The ear simulator is not ANSI or IEC compliant, and is not recommended for RECD measurements.
You can use the
Coupler Type
icons in the toolbar to toggle between 2cc coupler and ear sim-
ulator. The selected coupler type is saved with measurements for later reference.
Coupler microphone
The coupler microphone is located in a coupler bottom piece which must be attached to the coupler cavity.
You can use the coupler microphone either directly in AURICAL HIT or in the Accessory Box.
The system automatically detects and activates the coupler microphone regardless of which setup you are using.
AURICAL HIT
A. BTE testing - Low coupler position
B. ITE, RIE, thin-tube testing - High coupler position
The Accessory Box
Connect the mini-jack cable from the Accessory Box to the mini-jack socket under AURICAL HIT, and insert the coupler
microphone in the microphone socket in the Accessory Box.
A. Wireless hearing instrument testing
10
Otometrics - AURICAL HIT
2 AURICAL HIT
