National Instruments USB-621 Series - DAQ Hardware; DAQ System Overview

© National Instruments Corporation 2-1 NI USB-621x User Manual
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DAQ System Overview
Figure 2-1 shows a typical DAQ system, which includes the USB-621x
device, programming software, and PC (DAQ systems involving the
USB-621x Mass Termination device can also include signal conditioning
devices and a cable for accessory connection). The following sections
contain more information about the components of a typical DAQ system.
Figure 2-1. Components of a Typical DAQ System
DAQ Hardware
DAQ hardware digitizes signals, performs D/A conversions to generate
analog output signals, and measures and controls digital I/O signals.
Personal Computer
or Laptop
DAQ
Hardware
DAQ
Software
Sensors and
Transducers
(USB-621x
Mass Termination
Devices Only)
Signal
Conditioning
(USB-621x
Mass Termination
Devices Only)
Cables and
Accessories