DESCRIPTION Each Instrument-ClassTM DSCA module provides a single channel of isolated analog input or output. Various input modules accept analog voltage or current signals from all types of field sensors and sources and filter, isolate, amplify, linearize, and convert these input signals to high-level analog outputs suitable for use in data acquisition, test and measurement, and control systems. Output modules accept high-level analog voltage signals from a system, then buffer, isolate, filter, and amplify before providing a current or voltage output to a field device.