Determining The Proper Length Of The Probe Tube; Perform Recd Measurements - Siemens Unity 2 Mode D'emploi

5.5.3 Determining the proper length of the probe tube

It is important to determine the correct length of the
probe tube to avoid injuries to the ear drum. In case an
ear canal impression has been taken or an ear-mold is
already available, use this to determine the proper length
of the tube.
The probe tube should extend beyond the length of the
ear-mold about 3 – 5 mm. Use the marker to mark the
length measured from the tragal notch to the distal end
of the ear mold. When inserting the tube, stop inserting
once the marker has reached the tragal notch. Use a light
stick to check the probe tube end does not touch the ear
canal wall or is clogged by ear wax and is freely situated
5 mm right in front of the ear drum.
Refer to the Unity Software Reference manual available
from the installation CD for description of the particular
insitu measurements.

5.6 Perform RECD measurements

With the provided SPL60 Insitu Probe Tip (H) [# 87 86 175]
RECD measurements can be performed fast and easily.
The probe microphone tube (K) and the receiver tube (L)
are plugged to the ports of the probe (C). The probe tube
is connected into the small port and the receiver tube is
connected to the broad port.
In the SPL60 Insitu Probe Tip both tubes are combined in
one handle (H) for easier access to the ear canal. Standard
foam tips [BET60 SPL Audiometry Eartips, # 87 86 167]
are used to fixate the handle in the ear canal. The foam
tips (M) are available in different diameters to fit to indi-
vidual ear canal size.
C
H
K
L
Unity 2 – User Instruction Manual
M
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