The High Motion Tolerant (HMT) function is a noise cancellation algorithm that allows the user to filter out noise. The HMT algorithm is based on using two pressure signal sources, the ring and the main source. The algorithm estimates the motion noise from the ring signal and cancels this estimated noise from the main signal. HMT is designed to cancel noise and provide accurate Blood Pressure measurements for patients in constant, continuous, or rapid frequency motion, such as that encountered from running on a treadmill.

It is important to note that you should always begin your monitoring with HMT off. Monitor your patient for five readings to establish a baseline prior to selecting HMT:ON. Also, when monitoring with HMT on, the monitor Cycle Time needs to be set to Continual.