A device placed between a signal source and a readout instrument to change the signal. Examples: attenuators, preamplifiers, signal converters (for changing one electrical quantity to another, such as volts to amps or analog to digital), and filters. (Bentley Nevada Corporation; Field of Rotating Machinery Measurement, Monitoring and Analysis)
See Also
Creative
Modulation
Signal
Signal Attenuation
Static
Transmissive