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日本光电公司ECG6511心电图机的导程选择数字电路,用-加减计数器产生8421码来实现导程的选择转换。这比国产机械式导程选择优越性强,但也会因元件质量等问题而产生故障。故障现象:
Japan Optoelectronics ECG6511 ECG lead selection of digital circuits, with up-down counter 8421 yards to achieve the lead of the conversion. This is superior to the choice of domestic mechanical lead, but also due to component quality and other problems and failure. Symptom: