#$%^&*AU2019201289A120191003.pdf#####ABSTRACT Described embodiments include a system, including sample-andhold circuitry, configured to sample a plurality of intracardiac electrocardiographic (ECG) signals acquired by respective 5 electrodes disposed within a heart of a subject, and a processor. The processor is configured to receive, from one or more contactindicating sensors, contact-indicating signals that indicate respective likelihoods of the electrodes being in contact with tissue of the heart, and, in response to the likelihoods being 0 different from each other, cause the ECG signals to be sampled, by the sample-and-hold circuitry, at different respective sampling frequencies. Other embodiments are also described.1/2 CN~ 0C-) 04 LO couJ N z C) 0 040 LOU N--j 04~ cn(
