9-7 
 
6.  After the measurement is completed, the system enters Analysis screen. You can set the 
desired positions of [Cursor 1] and [Cursor 2]. When you select [Cursor 1] or [Cursor 
2], the selected cursor turns green. You can move the position of the cursor via the 
control knob to determine the characteristic points. The system also displays the volume 
value and pressure value in the inspiratory limb and expiratory limb corresponding to 
the cursor position and displays the compliance of these limbs.   
7. Select [History] to select the desired loop in the accessed list. The system only displays 
the history loop you are viewing. 
8. Select [Ref. Loop] to select the desired loop in the accessed list. The system displays the 
reference loop you are viewing and the current loop as well.
 
 
9.11 Automatic Tube Resistance Compensation 
(ATRC) 
ATRC stands for the function of automatic tube resistance compensation. By selecting 
appropriate endotracheal (ET) tube or tracheostomy (Trach) tube of different diameters for 
the user, the ventilator can adjust gas delivery pressure automatically, so that the pressure at 
the end of the tube is consistent with the ventilator’s pressure setting value as much as 
possible. 
 
The ATRC function can be set on the parameter setup window of each mode. 
1.  Select the desired ventilation mode and select [ATRC] to enter the ATRC screen.   
2.  Set Tube Type, Tube I.D., Compensate, and Expiration on the accessed screen. 
  Tube Type : ET tube and Trach tube   
  Tube I.D. : diameter of ET tube.   
  Compensate : percentage of ATRC. 
  Expiration : enable or disable compensation during exhalation. 
3. Select [Ok] and the system starts ATRC. After ATRC is enabled, if you enter the ATRC 
screen and then select [Disable ATRC], the system terminates ATRC in the course of 
ventilation immediately. 
When ATRC is enabled, Ptrach waveform is displayed with the Paw waveform. This 
waveform is independent of [Draw Wave] setting. For details about [Draw Wave], refer to 
5.1.1 Waveforms.