Operating Instructions MI 34 / MI 34 H
GEBAmi34e.11a.docx
20
850 232/14 08/11
Figure 15
Display of a 1000 Hz Tympanogram
Right
Tympanogram
Status
READY
ml
3
2
1
0
-600
-300
300 daPa
Ear Volume
Compliance
Pressure
Tymp 1000 Hz
Gradient
0.94 ml
0.81 ml
- 37 daPa
32 daPa
side by pressing the
L/R
-key
Ä
or the probe button
·
and repeat the
measuring procedure described above with the other ear.
4.5 How to evaluate the Tympanogram display
After having carried out
a measurement you can
see the results on the
LCD display.
On the left side of the
display you see the
Tympanogram. The
area surrounded by the
box is valid for
“normal”
Tympanograms. You
can change the area or
switch it off. For details
see chapter
12“Individual Setup of
the MI 34". In the
middle of the top of the LCD display
Ç
the word
Right
or
Left
indicates
the ear chosen at the moment.
Tympanogram
at the right top indicates that the reflex measurement has
been switched off.
In the boxes at the right the determined measurements are displayed:
-
Ear Volume
indicates the volume of the section of the auditory canal
between the ear tip and the eardrum in ml (in the example 0.94 ml).
-
Compliance
indicates the maximum value of the compliance from the
Tympanogram in ml (in the example 0.81 ml).
-
Pressure
indicates the pressure with the highest measured Compliance (in
the example -37 daPa).
-
Gradient
calculations are reported as the Tympanogram width at half of
peak compliance expressed in daPa (in the example 32 daPa).
