Isolation
Signals often can exceed the limits that a measurement device can handle. Trying to measure a signal that is too large for the measurement device can damage the device or you. To keep you and your device safe from large voltages, you can apply a signal conditioning technique called isolation. The signal conditioning hardware attenuates high common mode voltages and extracts a signal that measurement devices can handle. Isolation also ensures that differences in ground potentials do not affect your device.