User's Manual

markings of the ruler on the headset as indicated in the image

below). The recommended distances are:

a. Men: 27 mm

b. Women: 27 mm

c. Children: 20-25 mm

NOTE: the distances can vary depending on the patient. To avoid

problems, in any event, start with an ear inspection: this will give

some idea as to the dimensions of the auditory canal.

3. Position the probe headset on the patient, adjusting the loops (O-

rings) so that the probe is positioned just under the ear lobe.

4. Insert the probe tube into the patient's auditory canal, to the point

at which the black ring reaches the intertragic notch. If resistance is

encountered, do not force the tube further.

To favour the correct insertion of the probe tube and ensure it does

not snag on a wall of the auditory canal, there are insertion guides

for this same purpose supplied with the instrument. Insert the guide

in the relative hole (if necessary, refer to heading 2.2.1 Probes

(REM) for further information) and position the tube as illustrated

below: