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From Frequency Devices, Inc.
Aliasing: The result of sampling an analog frequency signal at a rate below that required by the Nyquist theorem of 2 x Fs. Under-sampling translates high frequency components into the pass-band, producing unwanted signal components and unpredictable results. Amplitude Response: The ratio of the output amplitude to the input amplitude versus frequency. Amplitude response is usually plotted on a log/log scale Anti-alias Filter: The pre-filtering of an analog signal, before it is digitized or sampled, to remove or substantially attenuate the undesired aliasing components. Products & Services
Signal filters block or decrease (attenuate) unwanted frequencies or signal wave characteristics.
Bridge conditioners are instruments that provide excitation and support for strain gages, Wheatstone bridges, load cells, and sensors. They also include circuitry for signal conditioning, amplification, and processing.
Digital filters use digital signal processing (DSP) to perform numerical calculations on sampled values of a signal.
Audio analyzers measure the noise and audio spectrum of output from an amplifier or a stereo.
Linear variable differential transformer (LVDT) and rotary variable differential transformer (RVDT) signal conditioners are devices that translate the linear or rotary movement of a ferromagnetic armature into an AC voltage that is proportional to the armature position.
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Topics of Interest
Alias protection is critical to accurate signal analysis. Aliasing is an effect associated with digitizing an analog signal. Aliasing can cause gross errors in measurement and testing. The only way to...
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Alias protection is critical to accurate vibration control. Aliasing is an effect associated with digitizing an analog signal. A similar effect occurs when a digital signal is converted to analog...
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