MIDIMATE 602 & 622 Diagnostic Audiometers
23
5.
Instruct the patient in how to use the patient response handswitch.
6.
Press
Menu
until the
Select Function
menu is displayed.
7.
Press
Softkey 3
,
Special
.
8.
Select
Rainv.
from the
Select special Test
menu by pressing
Softkey 4
.
9.
Turn the
Frequency
wheel to select the desired test frequency.
10.
If required, toggle
Softkey 2
from
C/P/W
to
C/P/W
to select a pulsed tone
stimulus.
11.
Turn the
Hearing Level
wheel to select an
R:Tone
level about 5 dB above
threshold.
12.
Press the
Tone Switch
to apply the tone stimulus in the headphone.
13.
Gradually increase the level of
NBN
in the Bone Conductor by turning the
Mask-
ing Level
wheel until the patient no longer responds when the stimulus is ap-
plied.
14.
Evaluate the bone threshold at the current frequency by subtracting 3 dB from
the masking level.
15.
Exit the test by pressing
Menu
.
