Operating procedures
1. The subject lay quietly and his muscles were relaxed
2. Place the control buttons on the panel of the electrocardiograph in appropriate positions as required. After the electrocardiograph is properly grounded, turn on the power and warm up for 5 minutes.
3. Place electrode
4. Connect the lead wire
5. To adjust the baseline, turn the baseline adjustment knob to make the baseline in an appropriate position.
6. Input the standard voltage and turn on the input switch. After the hot pen is warmed up for 10 minutes, press the 1mV calibration voltage button repeatedly, and then adjust the sensitivity (or gain) knob. The rising edge of the standard square wave is 10mm. Turn on the record switch and record the standard voltage curve.
7. To record the electrocardiogram, turn the lead selector switch to record Ⅰ, Ⅱ, and Ⅲ in sequence
8. After recording, the electrode should be loosened, washed and dried to prevent corrosion.
9. Turn the control buttons on the panel of the electrocardiograph back to their original positions, and finally cut off the power.
10. Remove the recording paper and write down the lead, subject's name, age, sex, and experiment date.
