I have problem with the setting of the etCO2 monitoring. I have connected the sensor cable and adjust the adapter and sensor between the endotraqueal tube and the Y piece of the ventilation machine tubes, but the curve and graphics doesn't appear on display monitor
When the recorder on and off button is on and when we press the 12-lead key on the keyboard, it just feeds the paper, but no printing on it. However, when we press the print & Rhythm button, it does feed and print properly. PO adjust and TOF adjust have been checked and PO voltages are correct but TOF was good without paper, but when advancing the paper, the voltages were lower than 2.25 (actually below 1). Any suggestions? Guidance? Why is it not printing when pressing the 12-lead button?