GE iVent 201 Series User's Reference Manual page 190

The O2 System Calibration screen is displayed (Figure 153).
Figure 153: O2 System Calibration for 100% O2
5. Follow the instructions on the screen, and verify the following:
A high pressure oxygen source is connected to the device.
o
The patient circuit is open (not sealed by any component).
o
6. Remove the inlet filter, on the side of the ventilator, and install the O2
calibration cover (Figure 154).
Figure 154: O2 Calibration Filter Cover
7. In the O2 System Calibration screen select Start to proceed.
This calibration takes approximately 30 seconds during which the message
'working' is displayed on screen.
After the calibration is completed the O2 System Calibration for 21% is
displayed (Figure 155).
Figure 155: O2 System Calibration for 21%
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