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To ensure the patient safety and ECG reliability, please check the above and start
operation.
4.4 Lead off indication
The instrument constantly checks the lead connection status. If the instrument detects the lead off, it
will display the corresponding information on the LCD screen as shown below, it shows C3 and C6
lead off.
When lead off, the waveform will not be displayed. Pressing "record" button is ineffective. Please
check the loose electrodes or electrode leads according to the prompt message and reconnect them.
1）Electrodes fall off
① When the lead wires are not connected to the patient or the instrument stably, ECG signals can
not be transmitted correctly, this message will be displayed for reminding;
② When the polarization voltage exceeds the limit value, the message will be displayed for
reminding.
2） If the “electrodes off” message is shown, handle it according to the following method:
① Press “reset” button to eliminate the influence of the polarization voltage to amplifier. It will get
the amplifier back to normal quickly;
② If pressing “reset” button does not eliminate the alarm, check the corresponding electrode and
its connection.
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