rhythm2, manual etc; the length of wave printing can be adjusted and the function of periodic printing is included to satisfy different applications. The instrument has the function of regular auto—analysis and auto—interpretation of ecg waveform parameter, provides measurement parameters such as hr, p—r interval, p duration, qrs duration, t duration, q—t interval, q—tc, p , axis, qrs , axis, t axis, r(v5), s(v1), r(v5)+s(v1) etc and auto—interpretation conclusion to help reducing doctor’ s abundance and improve working efficiency. It has build—in storage with large capacity, and can memory more than 1000 cases, which is easy for the doctor review and statistic. Support chinese, english, spanish and turkish operating interface, can print out chinese or english report. Option :ecg—sync software, connect with the pc by usb connector to form a ecg workstation, collect real—time data to the software to analyze and print the report, and can update the old cases in the ecg machine to pc. It has optional functions of fcg, hfecg, qtd, hrv analysis etc.