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Chapter14 Troubleshooting
14.1 Powering off automatically
①
Whether or not the battery capacity is nearly exhausted? Battery overdischarge protection
circuit is activated.
②
Whether or not AC supply voltage is too high? Overvoltage protection circuit is activated.
③
Whether or not AC interference is too large or fixed knob in lead cable socket is tightened?
Overload protection circuit is activated.
14.2 AC interference
①
Whether or not EKG312T is grounded reliably?
②
Whether or not the electrodes or lead cables are connected correctly?
③
Whether or not the electrodes and skin are smeared enough electric gel?
④
Whether or not the metal bed is grounded reliably?
⑤
Whether or not the patient have touched the wall or metal parts of the bed?
⑥
Whether or not the patient have touched other people?
⑦
Whether or not there is high-power electric equipment working nearby? Such as X-ray
machine or ultrasonic device,etc.
14.3 EMG interference
①
Whether or not the room is comfortable?
②
Whether or not the patient is nervous?
③
Whether or not the bed space is narrow?
14.4 Baseline drift
