Audioscan Verifit User Manual download pdf (Page 68)

Verifit

User's Guide Version 3.12



May 2015

Positioning the probe tube

1. Use an otoscope to ensure there is no ear canal obstruction (e.g. cerumen) and to get a sense of ear canal

length.

2. Install a new probe tube on the probe module. Set the black marker ring approximately 28 mm from end of

probe tube for adult females, approximately 30 mm from end of probe tube for adult males and

approximately 20-25 mm from end of probe tube for children. These positions may be modified based on the

otoscopic examination. (Tip - the probe module body is 28 mm long.)

3. Hang the probe module on the ear, as shown. The reference microphone should face outwards.

4. Adjust the blue cord until the probe module is snug against the head, directly below the earlobe (cheek

level). To facilitate this, clip the probe module cable to clothing on the side opposite the test ear and draw

the cable snug.

5. Hold the front blue cord so that it passes behind the ear canal entrance and pass the end of the probe tube in

front of the blue cord and into the ear canal.

6. Carefully slide the probe tube into the ear canal until the marker ring approaches the intertragal notch. Then

let the front blue cord move forward to hold the probe tube in place. Use an otoscope to verify that the tube

is 2 to 5 mm from the eardrum.

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Audioscan Verifit User Manual Page 68