... ultrasound28bpmUS frequency1MHz±5%HzTOCOMeasurement methodStrain gauge sensor elementSensitivity 1 unit =2.5gResolution1 unitMeasurement range500 unitsBaseline setting0, 5,10 ... , 15, 20 can be selectiveUpdate rate0.25 secondAuto offset correction3 second after connecting the transducerAuto ... , 25mm/s, 50mm/sGain selectionx 0.25, x0.5 ,x1,1, x2Operation modediagnostic, monitor, surgeryMaternal SpO2 ( ...