User's Manual

User Manual
Document No.
UM-C-002-EN
Date of Revision
2020.10.30
Revision No.
0
Page 11 / 123
[Fig 4.2 ECG waveform and action potential of the heart]
4.1.2 ATP-C130 ECG measurement process
[Fig 4.3 ATP-C130 system configuration]
1) Sensor: It detects the ECG signal and receives it in a stable form, reducing the fluidity of the ECG signal
for the movement of the human body. However, offset voltage caused by electrodes occurs, and this part is
removed from 3 IN-AMP & RLD(Amplifier).
2) ESD protection circuit: It acts as a protective circuit against signals input by ESD or external static
electricity when attached to the human body.
3) IN-AMP & RLD: It detects a signal using a precision instrument amplifier for electric signals
(heart/EMG/movement) from the human body, and also uses feedback from the RLD circuit for the input of
human body’s common noise (50 Hz or 60 Hz). It plays a role in detecting a clear ECG signal by reducing
the common-mode noise. Also remove the offset voltage generated by the sensor
4) High & Low-pass filter: The role of the filter is to remove the remaining signals except the information of
the ECG signal output by the IN-AMP & RLD using a bandpass filter.
5) ECG signal amplifier: It amplifies the signal that has passed through the filter.