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Maico MA 41 Operating Instructions

Maico MA 41
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Operating Instructions MA 41
8100456_OI_MA41_EN_15a 18 8100456-8 04/15
Perform the test utilizing the same method as air conduction testing.
If you are using bone conductor with contra lateral masking like the BKH 10,
connect the contra phone to the left insert phone socket (14, Fig. 1). If masking
is switched on, the masking noise will be routed to this output.
For hygienic reasons it is important to disinfect the bone conduction oscillator
following each patient (see chapter 8).
5.1.3 Sound Field Testing (optional)
Set the transducer selector (10) to Speaker. Perform the test utilizing the same
method as air conduction testing.
Warble tones should be used in the sound field as pure tones may provide
inaccurate results in the typical test room.
Perform the test in the same way as described in the air conduction section
above.
5.1.4 Uncomfortable Loudness (UCL) Testing
Testing of UCL can be measured using pure tone or speech stimuli. The purpose
is to determine the dB
HL
level at which the stimuli becomes uncomfortable to
the patient. The UCL is described as the level between very loud and too loud
as perceived by the patient when listening to the test signal. This information is
valuable for determining the limits of a patient's dynamic range.
Warning! Because this test uses high sound pressure levels, it is
extremely important to perform this test using the utmost caution to
avoid causing hearing loss. To prevent the possibility of extreme
discomfort by the patient, it is important to start the test at a
comfortable level.
Press and release the test mode selector key (13) below the display to select
UCL. The LCD-display in the bottom row changes from HL to UCL. Start with a
test level of 60 dB
HL
and present the tone briefly (max. 1s). If the signal was
recognized by the patient as “not uncomfortable,” increase the level and
proceed as described before. If the signal was uncomfortable for the patient
store the value. Proceed accordingly with other test frequencies.

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Maico MA 41 Specifications

General IconGeneral
BrandMaico
ModelMA 41
CategoryMedical Equipment
LanguageEnglish

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