User guide
BABYS
C
REEN
ECH001XN121-A4 – 07/2022
31
Chapter 4. Otoacoustic emission (TEOAE and DP-gram)
4.4 TEOAE
4.4
TEOAE
to obtain the necessary instructions about the needed equipment and the setup.
4.4.1.1
Measurement
The
BABYS
C
REEN
is a screening device, so there is no
special configuration required. After connecting the
OAE Probe, all you have to do is select the ear when
starting the measurement.
The validation criteria and the maximum test duration can be modified in the advanced setting of the TEOAE (see
). In this menu, it is also possible to modify the intensity used in
« Screening »
mode.
The
TEOAE
measurement window opens, click on
"
Start
".
At the measurement beginning, click calibrations are performed automatically to determine if the measurement con-
ditions are optimal to obtain usable results. In this context, the system inform the user that the conditions are not good:
•
"Low signal. Check leak. Continue?"
: The click signal is to low compared to his set value (at least 5dB to low).
This may be due to the wrong positioning of the probe, more precisely a sealing problem between plug’s probe and
the ear canal. It is advised to click on
“No”
, reposition the probe and restart the measure. However, if you are sure
of the probe’s positioning, it is possible to continue by clicking
“Yes”
.
•
"Too much signal, Check eartip. Continue?"
: The click signal is to strong compared to his set value (at least
5dB to strong). This may be due to the wrong positioning of the probe, more precisely if the probe is to deep in the
ear canal. It is advised to click on
“No”
, reposition the probe and restart the measure. However, if you are sure of
the probe’s positioning, it is possible to continue by clicking
“Yes”
.
Once the calibration is done, the measurement window appears :
If you are not familiar with the settings and how modifying them can affect test results, do not attempt to
change them. A bad setting can make the next measurements unusable and irrelevant.
This first step of the measurement is a self-calibration which last few seconds (2 or 3 seconds). During
this first step, the surrounding noise must be kept as low as possible.
