Chapter 8 Troubleshooting; Auto Shutdown; Ac Interference; Emg Interference - Gima ECG 300G Manual De Instrucciones

8.1 Auto shutdown

Ø The battery is almost running out, which causes overdischarge protection circuit action.
Ø The voltage of AC power supply is too high, which causes overvoltage protection circuit
action.

8.2 AC interference

Ø
Whether the device is grounded reliably?
Ø Whether the electrode or lead cable is connected correctly?
Ø Whether the electrodes and skin are daubed with enough conductive paste?.
Ø Whether the metal bed is grounded reliably?
Ø Whether the patient is touching the wall or metal parts of the bed?
Ø
Whether the patient touches other people?
Ø Whether there is high power electric equipment working nearby? Such as X-ray machine
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

Ø Whether the room is comfortable?
Ø
Whether the patient is nervous?
Ø Whether the bed space is narrow?
Ø Whether patient speaks during recording?
Ø Whether the limb electrode is too tight?
Note: If the interference can not be removed after taking above measures, please use a

Chapter 8 Troubleshooting

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