6-16
4.The screen shown below is displayed if the ongoing calibration is aborted. Select Retry to do
the calibration again, or select Done to exit the calibration screen.
5.The screen shown below is displayed if the calibration fails. There are three cases:
(1) the calibration at 21% and 100% O2 fails;
(2) the calibration at 21% O2 fails and that at 100% O2 succeeds;