APPENDIX B
–
BASELINE MODE
62
OTOWAVE 302+ INSTRUCTION FOR USE
11.
APPENDIX B
–
BASELINE MODE
11.1.
GENERAL
The Otowave 302+ can display tympanograms in a variety of graphical formats allowing the operator to choose the most
appropriate for the patient under examination.
This is achieved by altering the
DISPLAY MODE
and the meatus compensation (or
BASELINE OFFSET
). The
DISPLAY
MODE
determines how the tympanogram trace is derived from the raw data, and the baseline offset selects the
pressure to which the meatus compensation is referenced (either -400daPa or +200daPa).
DISPLAY MODE
and
BASELINE OFFSET
are collectively referred to as
BASELINE OFFSET
in the instrument menus and the accompanying
documentation.
The tympanogram is initially presented using default settings for display mode and baseline offset. Additionally,
whenever a tympanogram is shown
it may be re-displayed using any of the alternative
DISPLAY MODES
and
BASELINE
OFFSETS
available described in this section.
Switching between
DISPLAY MODES
and
BASELINE OFFSETS
is carried out using
either the display mode key on the front panel or the function button on the
probe.
Press and briefly hold the key or button to cycle round Scalar, Vector and
Component display modes. Short button presses will circle around the current
selected mode, long button presses will access another display mode.
11.2.
226 HZ TYMPANOMETRY
–
Y COMPENSATION ONLY
Please note
that only the Scalar display mode is available for 226Hz probe frequency.
2S MODE
4S MODE
