Welch Allyn MicroTymp 3 portable tympanometric instrument - User Manual - Manual (Page 18)

18 Completing a test Welch Allyn MicroTymp3 portable tympanometric instrument
2. Press the button below the Liquid Crystal Display (LCD) to show the
current frequency. One of the screens shown below will appear.
3. To switch to the other frequency, press both the Right memory and Left
memory buttons on the handle simultaneously until the desired frequency displays,
as shown below. Pressing the two memory buttons repeatedly toggles between
these two screens.
4. Press the button again to confirm the desired frequency. Either the
OPEN 226 or OPEN 1000 screen will display, as shown in step 2.
5. Once you’ve confirmed the desired frequency, proceed with the test. Grasp the
subject's pinna. Pull gently back to straighten the child's ear canal (or up and back for
adults). See the image on the left below.
6. While maintaining tension on the pinna, press the tip firmly against the ear canal
opening. See the image on the right below. Point the tip straight into the ear canal for
adults and slightly anteriorly for children.
Note Time-out feature. The tympanometer automatically turns off 15 seconds after the
last test or button activation.
Note The default frequency set at the factory is 226 Hz. To change the default
frequency to 1000 Hz, see the instructions at the end of this chapter.
TEST
-400 -200 0 200
2
0.5
0
1.0
1
GR
A
GR
C
PRESSURE - daPa
Ya - mmho
+200 Vea - cc
-400 -200 0 200
2
0.5
0
1.0
1
GR
A
GR
C
PRESSURE - daPa
Ya - mmho
+200 Vea - cc
R L
-400 -200 0 200
2
0.5
0
1.0
1
GR
A
GR
C
PRESSURE - daPa
Ya - mmho
+200 Vea - cc
-400 -200 0 200
2
0.5
0
1.0
1
GR
A
GR
C
PRESSURE - daPa
Ya - mmho
+200 Vea - cc
TEST