Possible causes of the symptoms:
● No HR value
■ Poorly connected electrode sheet can cause a very tiny amplitude or no value in the ECG wave.
■ The tested object’s signal is far too faint.
■ The cable from the ECG and the socket is not connected well.
● Abnormal and disorganized ECG waveform
■ Whether the main unit’s ground wire is properly connected or if one doesn’t exist at all.
■ Whether a high-power instrument—such as a high-frequency electrosurgical knife—is operating
nearby and interfering with this one.
■ Several monitoring or therapeutic instruments are using simultaneously for the same tested object.
■ Dry skin, low electrode sheet conductivity, and poor connection.
■ Lead is poorly connected due to its prolonged use, frequent plugging and unplugging, or oxidation.
■ The ECG module is defective.
● Excessive amplitude of ECG waveform
■ The tested object is highly unstable and moves a lot, making the signal unstable.
■ There is a conductivity decline or incomplete affixedness of the electrode sheet.
■ The ECG module is defective.
● Sporadic ECG waveform
■ To prevent the electrodes’ conductive capabilities from degrading, first make sure the electrodes
and the measured part are connected properly. Then, wipe the skin with saline and store the
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