Maico MA 42, Руководство по эксплуатации

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Operation Manual MA 42
8100460 Rev.7 Ver.1 24 12/15
6.1.7.1 Preparation of the SISI Test
To start the test select SISI with the functional selector button (13), choose OT
Tests and SISI Test.
Select the test frequency with the frequency keys (4), (5). For the test you
should choose the frequency where the maximum bone conduction hearing
loss is measured as described in chapter 5.1.3.
Adjust the test intensity with the level control dial (1) to a value of 20 dB
above the individual hearing threshold.
Recognize that in the SISI mode the test is presented continuously. You can
interrupt the test by pressing the Pause (9) button. Press Start (19) to resume
the test.
6.1.7.2 Training of the Patient
Only with careful training during the following conditioning phase can a valid
test result can be achieved.
The training starts with level steps of 5 dB. That means a continuous tone,
e.g. 65 dB
HL
, is briefly increased by 5 dB, e.g. to 70 dB
HL
. During the
increment time, a green box is shown in the middle of the LCD display. The
number of detected (recognized) increments is counted and shown on the
display. Furthermore, the number of presented (given) increments is shown.
Instruct the patient to press the patient response button when they hear a
change in loudness from the continuous presentation tone. The response
button must be pressed while the green box is displayed on the screen and
thus the tone is being presented to the patient for this to be counted.
Figure 6 - Start Screen SISI Test