this 10 or 15 dB, just enough to hear is applied. The person who
carries out this check should have good hearing
- Check at a level of 60dB in AC and 40dB in BC that there is no
distortion, noise or parasitic signals in any of the frequencies
- Check that the patient response switch, the control panel and the
indicators function correctly
- Check the inputs of speech audiometry (MIC and EXT).
- Check the headband strain of headset and of bone vibrator
- Check the communication with the patient
Should any accessory not function correctly, consult Appendix B
“Troubleshooting”.
It’s basic also check that the calibration interval has not elapsed: the expiry
of the interval is indicated at the top left of Maestro software.
Calibration must be entrusted to technicians approved by Inventis
srl. The operation should be performed at least once every 12
months, and whenever a transducer is replaced.
MAINTENANCE OF TRANSDUCERS
Do not use liquids or sprays to clean the audiometer.
Do not allow dust to collect on the transducers. In addition:
- The headphone cushions are made of biocompatible material but are not
sterile: to prevent the spread of infection and guarantee the
biocompatibility of the material, whenever the headphones are to be
worn by a new patient, the cushions must be wiped with, for DD45/TDH-
39 cushions, denatured alcohol wipe or denatured alcohol with a
microfiber cloth.
- The ear tips of insert earphones and the masking insert earphones (IME-
100) are made of biocompatible material and disposable: use once only
and dispose of in accordance with current health and safety regulations.
The eartips of insert earphones are not sterile. The use of unsterilized
earpieces can cause ear infections.
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