Gima ECG90A Manuel D'utilisation page 39

8.1 Auto shutdown
The battery is almost running out, which causes overdischarge protection circuit action.
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The voltage of AC power supply is too high, which causes overvoltage protection circuit
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action.
8.2 AC interference
Whether the device is grounded reliably?
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Whether the electrode or lead cable is connected correctly?
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Whether the electrodes and skin are daubed with enough conductive paste?.
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Whether the metal bed is grounded reliably?
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Whether the patient is touching the wall or metal parts of the bed?
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Whether the patient touches other people?
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Whether there is high power electric equipment working nearby? Such as X-ray machine
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or ultrasonic device, etc.
Note: If the interference can not be removed after taking above measures, please use a
AC filter.
8.3 EMG interference
Whether the room is comfortable?
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Whether the patient is nervous?
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Whether the bed space is narrow?
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Whether patient speaks during recording?
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Whether the limb electrode is too tight?
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Note: If the interference can not be removed after taking above measures, please use a
EMG filter. The ECG waveform recorded at this time will be slightly attenuated.
Chapter 8 Troubleshooting
33