Critical Technologies in Front-End Signal Conditioning SystemsSignal conditioning is one of the most important -- and most overlooked -- components of a data acquisition system. With it, you can bring real-world signals into your digitizer. Many sensors require special signal conditioning technology, and no instrument has the capability to provide all types of signal conditioning to all sensors. For example, thermocouples produce very low voltage signals, which require amplification, filtering and linearization. Other sensors, such as strain gauges and accelerometers, require power in addition to amplification and filtering, while other signals may require isolation to protect the system from high voltages. No single instrument can provide the flexibility required to make all of these measurements. However, with front-end signal conditioning, you can combine the necessary technologies to bring these various types of signals into a single data acquisition system.
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