Data acquisition systems make various types of physical measurements, such as temperature,
pressure, flow, strain, position, and speed, using electronic equipment. The data
collected is usually sent to a computer for analysis and display.
Data acquisition and control (DAC) systems also take action (control) based on the
data they receive. Turning on or off lights, motors, valves, heaters, and fans are
common functions of control. Sending out voltage, current, digital words, pulses,
and waveforms are also forms of control from the DAC system.
DAC software that runs in the computer coordinates and executes these functions. The
interface test adapter (ITA), which is specific to the UUT, mates to the ICA and
provides I/O routing from the instruments to the UUT interface.
