
91-1
91.1 Introduction
Signals from sensors do not usually have suitable characteristics for display, recording, transmission, or
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they may carry superimposed interference that masks the desired information. Further, implementing
other functions such as amplitude demodulation, linearization, and temperature compensation before
digitizing signals can sometimes be cost eective.
Signal conditioners, including ampliers, adapt sensor signals to the requirements of the receiver
(circuit or equipment) to which they are to be connected. e