Audio Traveler AA222, Инструкции по эксплуатации

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AA222 Operation Manual Page 37
Picture 2: Picture 3:
Note: A shoulder strap is also available for performing clinical
tympanometry. See this shoulder strap in picture 3.
Making a Good Probe Seal:
Most ear canals are more or less curved. To get a good fit of the
ear tip, pull back the pinna to straighten out the ear canal during
insertion of the probe as indicated in figure 5.
Figure 5:
Hair coming out of the ear canal may make an airtight fit difficult
to obtain. Therefore, ideally, excessive should be removed prior
to testing. Also, a clinical ear tip covered with Vaseline may be
helpful. Make sure the ear tip does not have its opening closed
by the wall of the ear canal or clogged by Vaseline or cerumen.
For decay test an absolutely airtight fit is needed to avoid test
results indicating decay, where the test result is actually just an
artefact caused by a poor fit.