Interacoustics AA222 - Page 52

AA222 Instructions for Use – US Page 46
3.7.1.8 Auto: Hughson-Westlake
Hughson-Westlake is an automatic pure tone test procedure. The threshold of hearing is defined as 2 out of
3 (or 3 out of 5) correct responses at threshold level in a 5dB increase and a 10dB decrease test procedure.
Function Key
Description
A
Toggles between showing and hiding the trace.
B
When activated, the patient can get familiarized with the testing procedure
without data being part of the recording.
C
When pressed the currently selected frequency is tested. The test starts
immediately when pressed.
D
Press the play button to start the test for all frequencies.
Pause
E
Stop