Électronique du Mazet ECHODIA ELIOS, Руководство пользователя

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User guide
ELI O S
ECH001XN111-A4 – 07/2022
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Handheld mode measurement 4.5 DPMC
You can suspend acquisition at any time using the " Pause " button. This temporarily suspends acquisition when the
patient has a fit of coughing for instance, or to facilitate changes of the patient's position.
The rejection indicator light notifies you when the rejection threshold is reached. If 40 successive rejections are de-
tected, the current point is rejected and the " Rejection " information appears on the screen. This phenomenon means that
the patient's muscular activity is too intense. When the patient is more relaxed, measurement will start again automatically.
If the phenomenon persists, it means that the rejection threshold has been calibrated too low. Click on the "
Pause " button
for suspends acquisition, and increase the rejection threshold through the adjustment button (+/- 25% of the initial rejec-
tion). Restart the measurement thanks to the "
Pause " button.
The " Stop " button stops the measurement. Once data acquisition is over, the curve is reconstructed.You then have the
choice of saving the data by clicking on " Save " or deleting it by exiting from the window using the back cross (a message
requesting you to confirm the deletion appears: answer yes or no).
4.5.1.1 Prerequisites for exploitation of the measure
If most points on a curve relate to a
𝑆𝑖𝑔𝑛𝑎𝑙
𝑁𝑜𝑖𝑠𝑒
ratio of less than 6dB, we advise you not to use the curve as it is. You can
act on several parameters to improve measurement quality:
1. Restart a measurement while increasing the number of averages needed to acquire a point, for instance by adding
+ 50 stim
2. Restart a measurement by increasing the acoustic stimulation intensity by +3 dB .
3. The cochlear microphonic potentials are particularly sensitive to electromagnetic radiation of other electrical equip-
ment located nearby. Restart a measurement by shifting the stimulation frequency by
± 30 Hz .
4.5.2 Measurement consultation
This graph contains several items of information :
•
The phase curve represents the measured phase shift value included between ±180°. The color of each point on
the graph depends on the position of the patient.
For more details about the curve consulting options, please refer to paragraph Erreur ! Source du renvoi
introuvable. .
The saved data can be consulted in the patient's " Consultation " menu.
Refer to paragraph 4.1 for more details about patient management.
Measure informations
Phase curve
Min / Max signals
Select phase shift calculation
marker
Phase shift between A
and B