... waveform 6) Trend curve: full parameters 24-hour trend curve 7) Communication port: RS232 8) Parameters settings: a) Respiratory ... ratio: 1:0.3, 1:0.5, 1:0.7, 1:1.0, 1:1.5, 1:2.0, ... -60Hz, maximum 50VA 6) Operation temperature: 10-40°C 7) User interface: touch screen 8) Cable length: 3.0m ... the patient 23) Monitor 24) Display: 12.1'' TFT LCD, or 15''CRT screen 25) Can choose the needed parameters ...