Maico MI 24, Operating Instructions Manual

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Operating Instructions MI 24, MI 24h
23
6.3 Preparing the ipsilateral measurement
The LCD shows the empty tympanogram for the right ear and the control light of the
probe is red.
To measure the left ear, change
the side by pressing the
L/R key
or the probe button. The
selected test ear shown in the
middle-top of the LCD will
change from
Right to Left and
the control light of the probe
will turn blue.
Turn the reflex measurement on
by pressing the
Reflex key. The
word Ipsi must appear at the
right top of the display. The
sound stimuli for the reflex
measurement are reproduced by
the receiver integrated in the
probe.
Set the desired intensity level with the down/up keys
.
On the LCD below the reflex
boxes at the bottom, the selected level in dB (Figure 19: 80 dB) appears. The “
I
”
indicates that an ipsilateral test is selected. You can choose between the fixed levels
70, 75, 80, 85, 90, 95 and 100 dB
HL
and Auto with a starting level of 70 or 80 dB
HL
.
If you choose
Auto,
the
MI 24
starts with the preset level and increases the level
automatically until a reflex is registered or the maximum value is reached. You can
choose your individual starting level and maximum level. If you have chosen a fixed
level, the instrument measures only with this level.
Make sure the auditory canal is clear.
Choose the correct ear tip according to the size of the auditory canal and put it firmly
onto the probe tip (see chapter 3.7 Figure 9).
Status
READY
Ear Volume
Compliance
Pressure
Gradient
Impedance Ipsi Right
ml
3
2
1
0
-600 -300 300 daPa
1
80
500 Hz I
4
80
4000 Hz I
3
80
2000 Hz I
2
80
1000 Hz I
AUTO dB
Figure 19
Display Tympanogram and reflex
(ready for measurement)