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D-0115687-C (OM008) – 170 Operating Manual
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 Manual audiometry
4.4.1 Pre-test
(1) Switch the audiometer on
(2) Perform a listening check
(3) Decide whether to use the manual or automatic Threshold Retention
Function and/or an audiogram card to record the thresholds
(4) If the automatic Threshold Retention Function is required ensure that
the Store on 2 of 3 option is enabled (see Section 3.4.2) and that a
patient response switch is in use
(5) Prepare the test environment & patient (see Sections 4.1 to 4.3)
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