D-0004578-R – 2022/05 Page 19
Affinity2.0/Equinox2.0 - Instructions for Use - US
3 Operating instructions
The instrument is switched on/off by the switch on the rear, an indicator LED indicates power ON. When
operating the instrument, please observe the f ollowing 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.
3. It is recommended that the disposable f oam eartips supplied with the optional IP30, or E
.
A
.
R Tone
5A insert transducers are replaced after each client tested. Disposable f oam eartips also ensure that
sanitary conditions exist f or each of your clients, and that periodic cleaning of a headband or cushion
is no longer required.
4. The instrument must warm up for at least 3 minutes in room temperature bef ore use.
5. Be sure to use only intensity levels of the presentation signal which will be acceptable for the patient.
6. The transducers (headphones, bone conductor, etc.) supplied with the instrument are calibrated to
this instrument - exchange of transducers requires a new calibration.
7. It is advised that you apply masking when perf orming Bone Conduction Audiometry to ensure that
correct results are obtained.
8. 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 f ollowed f or use of
this disinfecting agent to provide an appropriated level of cleanliness.
9. 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 f ield installation is calibrated at the site where it
is used and under the conditions that exists during normal operation.
10. For maximum electrical saf ety, remove the USB cable when it is left unused.
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