4-13 
 
View frozen spirometry loops 
You can turn the control knob clockwise or counter clockwise to move the cursor to view the 
frozen spirometry loops. 
 
 
Exit freeze status 
In freeze status, push the Freeze key to exit the freeze status. In freeze status, if no operation 
is performed on the ventilator for more than three (3) minutes, the system exits freeze status 
automatically.