AmpliVox Otowave 202, Руководство по эксплуатации

Страница: 26 / 59

CONFIGURATIONS
21
D-0115692-C (OM031)
–
Otowave 202 Operating Manual
Component Mode
This 1000Hz mode displays the separate admittance, susceptance & conductance (YBG) information
contained within the tympanogram. This is suitable for all patients, and the display format is shown below.
Component mode is used as required by the audiologist. Note that the admittance (Y) and scalar traces are
similar (but the baseline is offset).
Further Information
For the display modes described above the user is referred to the various publications & papers available for
more detail and discussion regarding the possible methods of displaying 1000Hz tympanograms and the
interpretation of the associated tympanometric data.
Section 19 provides details of the way 1000Hz measurements are performed in comparison with those at
226Hz and the differences in the mathematical analysis needed to treat the two cases.
6.1.3. SELECTING ALTERNATIVE DISPLAY MODES
Switching between baseline display modes is carried out using the function button on the probe (see Section
4.4).
A short press of the button will switch between the baseline offset values of +200daPa and -400daPa (for
Scalar and Vector
H
modes) or will cycle round the admittance, susceptance & conductance displays (for
Component H mode).
Press and briefly hold the button to cycle through Scalar, Vector
H
and Component
H
modes (note that only
scalar mode is available for 226Hz probe frequency).
When a ne
w test is “saved as last test” the display mode most recently viewed will be saved, although any of
the other display modes can be re-created when the test is loaded back into the instrument using
“View the
last test
”. The same applies to results stored in the instrument’s database.
6.1.4. EAR SEAL CHECK
The type of ear seal check employed at the start of a test can be set in the CONFIGURATION menu (Section
6). The default QUICK option is adequate for most tests, although it may not always be possible to generate
the extremes of pressure with this setting.
ECV
0.9
ml
6
200 daPa
-200 -400
12
0
mƱ
Admittance Y
ECV
0.9
ml
Susceptance B
6
200 daPa
-200 -400
12
0
mƱ
ECV
0.9
ml
Conductance G
6
200 daPa
-200 -400
12
0
mƱ