Maico MI 34 Operating Instructions Manual

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Maico MI 34 Operating Instructions Manual Manual pdf 23 page image

Operating Instructions MI 34 / MI 34 HGEBAmi34e.11a.docx 22 850 232/14 08/115 Measurement with Hightone (optional MI 34 H)In addition to the standard 226 Hz probe tone tympanometry, the MI 34 Hhas a high frequency probe tone of 1000 Hz that can be selected by theuser. A tympanogram recorded using the high probe tone is generallybetter suited for screening newborns and provides more accurate results forthose subjects.To select high probe tone frequencyWhen the instrument is switched on, it automatically powers-up in thestandard tympanometry mode. In order to choose tympanometry with highprobe tone, hold down the Reflex key for two seconds.The screen for high probe tone tympanometry looks very similar to thenormal tympanometry mode, however the following differences will appearon the screen:● The scaling is now measured in mmho● The pre-selected frequency (1000 Hz) is displayed in the upper left handside of the screen● The tympanometry test with high probe tones is performed in the exactsame way as a normal tympanometry test.It is possible to perform normal tympanometry and high probe tonetympanometry in one test session and print the results for comparison.When the first tympanometry curve has been drawn, press the Reflex keyfor two seconds to switch to high probe tone tympanometry. Now the nextcurve will be drawn automatically. Press Print and a printout presentingboth curves will appear.Note: It is not possible to perform reflex tests on the basis of a highprobe tone tympanogram.