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
(1) Connect the required accessories and switch the audiometer on
(2) Perform a listening check
(3) Decide whether to use the Threshold Retention Function (see Section
3.6) or an audiogram card to record the thresholds
(4) Prepare the test environment & patient (see Sections 4.1 to 4.4)
(5) Select the better hearing ear (according to the patient) by pressing
either the LEFT or RIGHT key
4.6 Test
(6) Present the first test tone at 30dB at 1kHz
(7) If the patient responds, reduce the signal level in 10dB steps until they
no longer respond; then increase the signal level in 5dB steps until the
patient responds
(8) If the patient fails to hear the first tone, increase the signal level in 5dB
steps until they do respond and then continue with step 9
(9) 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
(10) If Store on 2 of 3 is selected, go to step 12
(11) Repeat step 9 until the patient responds three out of a maximum of
five times at the same signal level, indicating the patient’s hearing
threshold level for that frequency; mark the threshold on an audiogram
card or press the STORE key once to activate the Threshold
Retention Function which displays the threshold on screen
(12) If Store on 2 of 3 is selected, repeat step 9 until the patient has
responded 2 out of a maximum of 3 times at the same signal level;
this will automatically display the threshold on the screen
(13) Proceed to the next test frequency and repeat steps 6 to 12
(14) Repeat steps 6 to 13 for the other ear
4.7 Post-test
(15) Use the Threshold Retention Function to review the results (See 3.6)
(16) If required do one or more of the following:
Record the results on an audiogram card, or
Save the results to the internal memory (Section 3.7), or
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