Our legacy of more than 1120 stress test installations as allowed: Stress ECG with a rock steady baseline at heart rate more than 210. Compliance with full frequency response of 0.05 Hz. to 100 Hz. as stipulated by American Heart Association. Accurate computation of ST levels, assuring excellent correlation with angiography. Clean ECG without muscle tremor or 50 cycle noise. A treadmill that can take a sumo's weight. ST integral of all 12 leads. 1 mm grid display on screen. Graphic display of ST levels of all leads. Trends also for R wave, RPP, METs and PVC per minute.