a. MEP function test:
1) Display pressure waveform in real time;
2) Calculate and display parameter values and their ratios to the expected values, display the quality control rating and show the best value of multiple measured values;
b. MIP function test:
1) Display the respiratory waveform in real time;
2) Calculate and display parameter values and their ratios to the expected values, display the quality control rating and show the best value of multiple measured values;
c. Trend chart display;
d. LED indication: After successful connection, the LED light is on; during data collection, the LED light flickers;
e. Buzzer prompt: After successful connection, the buzzer beeps, indicating that the connection is successful; after pressing down the key, the buzzer beeps.