audioscan Verifit VF-2 - Positioning the Probe Tube

Verifit
®
User's Guide Version 3.12  November 2015
3. Position the back speaker (if used) directly behind and facing the back of the client’s head so that front and
rear speakers are at the same height and are at the same distance from the center of the client’s head.
Positioning the probe tube
WARNING: Probe tubes are for single-patient use only. Care is required when sliding the probe tube into the
ear canal. Be careful not to advance the probe tube further into the ear canal when inserting an earmold or
custom hearing instrument into the ear or when inserting the foam tip into the ear
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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