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Anser EMT utilises 8 transmitter PCB coils in total. Therefore the induced sensor voltage on the sensor is a superposition of voltages due to each of the 8 coils:
<math display="block">V(t) = \sum_{n=1}^8 v_i(t)</math>
This amplitude of this composite signal is very weak (of the order of <math>\mu V</math>) and requires significant amplification before sampling by the data acquisition system (DAQ).
