Affinity2.0
Instructions for Use - EN Page 25
3 Operating instructions
The instrument is switched by the switch on the rear. When operating the instrument, please observe the following general precautions:
1. The intended operators of the instrument are ENT doctors, Audiologists and other professionals with similar knowledge. Using the instrument without adequate knowledge may lead to erroneous results and may endanger the patients hearing.
2. Only recorded speech material with a stated relationship with the calibration signal should be used.
In the calibration of the instrument it is assumed that the calibration signal level is equal to the average level for the speech material. If this is not the case, the calibration of the sound pressure levels will be invalid and the instrument needs recalibration.
It is recommended that the disposable foam eartips supplied with the optional E .
A .
R Tone 3A or
E .
A .
R Tone 5A insert transducers are replaced after each client tested. Disposable foam eartips also ensure that sanitary conditions exist for each of your clients, and that periodic cleaning of a headband or cushion is no longer required.
3. The instrument must warm up for at least 3 minutes in room temperature before use.
4. Be sure to use only intensity levels of the presentation signal which will be acceptable for the patient.
4. The transducers (headphones, bone conductor, etc.) supplied with the instrument are calibrated to this instrument - exchange of transducers requires a new calibration.
5. It is recommended that parts which are in direct contact with the patient (e.g. earphone cushions) are subjected to standard disinfecting procedure between patients. This includes physically cleaning and use of a recognized disinfectant. Individual manufacturer's instruction should be followed for use of this disinfecting agent to provide an appropriated level of cleanliness.
6. To establish conformity with the IEC 60645-2 standard, it is important that the speech input level is adjusted to 0VU. It is equally important that any free field installation is calibrated at the site where it is used and under the conditions that exists during normal operation.
7. For maximum electrical safety, remove the USB cable when it is left unused.
