Électronique du Mazet ECHODIA ELIOS, Руководство пользователя

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User guide
ELI O S
ECH001XN111-A4 – 07/2022
18
General information about using ELIOS 2.3 Advanced configurations
2.3.1.2 Config TEOAE
The TEOAE configuration window allows you to mod-
ify the validation criteria for the "
screening mode ".
There are two ways to validate the presence of OAE:
- Validation by the number of frequencies detected
for a given value of the signal-to-noise ratio.
- Validation by statistical analysis.
For this second case, the detection is based on the cor-
relation between the two buffers, the stability of the re-
sponse and the presence of an OAE signal. Thus, the
settings for the minimum SNR value and the number of
frequencies for validation are disabled. Protocol
changes should only be performed by qualified person-
nel
Statistical detection Enable the statistical detection (Method used in the previous version).
Min SNR
Minimum value (in dB) of the signal level compared to the noise level to consider the
OAE present (detected) at each frequency
Freqs Nb for PASS
The minimum number of frequencies with OAE present (detected) required to determine
"PASS" in screening mode
Max Test Time Maximum test duration for each frequency in "screening mode" in case of no response
Power (Screening)
The intensity in dB in "screening mode" if "Protected access to settings" is activated.
Otherwise, the intensity is adjusted directly in the test window
2.3.2 Configuration of the click stimulus
You can configure the click stimulation correction. (This configuration is valid for ABR , ECochG and VEMP ).
In the device main menu, click on " Config ". The param-
eter adjustment window opens.
Click on "
Config Click " to gain access to the advanced
click settings.
If you have any doubt about the configuration, click on " Reset data " to return the factory configuration
and " Confirm
”.
If you are not familiar with the settings and how modifying them can affect the test results, do not try to
change them. Incorrect settings can make future measurements inoperable and irrelevant.
For acoustic and physiological reasons, the frequency reliability of the TEOAE test is between 2Khz and
4KHz, the validation criteria with a minimum number of frequencies above 3 can make the test slow and
prone to false negatives.
If you have any doubt about the configuration, click on " Reset data " to return the factory configuration
and " Confirm
”.
If you have any doubt about the configuration, click on " Reset data " to return the factory configuration.