Welch Allyn OAE Hearing Screener - User Manual - Manual (Page 14)

OAE functionality
Item number Description
1 Probe connector
2 Test status indicators
3 Charge status indicator
4 Control panel
5 Micro-USB Connector
6 Display
The system consists of the screener, probe, printer, single-use eartips, replaceable probe
tubes, and other accessories. The screener contains the hardware and software for
generating the test stimuli, measuring and displaying the OAEs, and storing the results
until they are printed. The plastic housing contains circuit boards that provide the signal
processing and display the test results.
The screener also contains a rechargeable lithium-ion battery. The screener displays the
test status using a liquid-crystal display (LCD) and three light-emitting diodes (LEDs). You
control testing, printing, and test protocol resets using four keypad push buttons.
The probe contains the speaker and microphone which produce test stimuli and measure
the sound pressure level (SPL) present in the sealed ear canal. Interface of the
instrument to the ear canal is accomplished through disposable eartips which fit onto the
probe tube. The disposable eartips are color coded by size for easy selection.
10 Introduction Welch Allyn ® OAE Hearing Screener