Page 12 OM006-12 Model 116 Operating Manual
(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 3.5.2) and that a
patient response switch is in use
(5) Prepare the test environment & patient (see Sections 4.1 to 4.4)
(6) If the patient response switch is not being used give instructions to the
patient to acknowledge any tone presented by raising or lowering the
finger
(7) Select the better hearing ear (according to the patient) by pressing
either the LEFT or RIGHT key and start the familiarisation session.
4.6 Familiarisation
(1) Present the tone 30dB at 1kHz for between 1 and 2 seconds. If there
is no response at 30dB, increase the attenuation level in 10dB steps
until the patient responds
(2) When the patient responds, wait for 1 to 2 seconds and present the
tone again at the same level; however, if the patient does respond at
30dB, reduce the signal level in 10dB steps, repeating the
presentation until there is no response, then increase the signal level
in 5dB steps until the patient responds; wait 1 to 2 seconds and
present the tone again at the same level
(3) If the responses are consistent with the pattern of tone presentation
proceed to Section 4.7 and start measuring the patient’s hearing
thresholds; if not, repeat the familiarisation process
4.7 Test
(1) Present the first test tone at 30dB at 1kHz
(2) If the patient responds, reduce the signal level in 10dB steps
repeating the presentation until there is no response; then increase
the signal level in 5dB steps until the patient responds
(3) If the patient does not respond, increase the signal level in 5dB steps
until there is a response and then continue with step 4.
(4) Repeat the test by reducing the signal level in 10dB steps until the
patient no longer responds. Then increase the signal level in 5dB
steps until they do respond and note this level.
(5) Repeat step 4 until the patient responds three out of a maximum of
five times at the same signal level. This indicates the patient’s hearing
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