Audiometric testing should always be performed in quiet conditions (e.g. a
quiet room or an acoustic booth). The optional Audiocups can provide an
additional level of isolation from ambient noise. For further explanation on
permissible ambient noise levels, please refer to the standard ISO6189.
4.2 Test system arrangement
The schematic diagram below shows a typical example of the use of
audiometric test equipment. The audiometer is located on the desk of a
seated operator as shown.
The patient is seated in front of the desk facing away from the operator.
The patient wears a headset (see Section 4.3) and responds to test stimuli
by use of a hand-held switch which is also connected to the instrument.
4.3 Headset
The headset must be fitted by a qualified person to ensure a proper seal
and a comfortable fit. The leads from the headset are connected to the
instrument and the headset is then fitted to the patient.
4.4 Patient instructions
The patient should be given the following instructions using the
TALKOVER function:
“As soon as you hear the tone, press the response switch. When you
no longer hear the tone release the response switch”
4.5 Pre-test
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