Kaman KD-5100 - Manual (Page 27)

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LINEARITY
Linearity is the maximum deviation of any point of a calibrated system’s output from a
best-fit straight line. Express in actual units, e.g., microinches.
EQUIVALENT RMS INPUT NOISE
Equivalent RMS Input Noise is a figure of merit used to quantify the noise contributed by
a system component. It incorporates into a single value, several factors that influence a
noise specification such as signal-to-noise ration, noise floor, and system bandwidth.
Given a measuring systems sensitivity/scale factor and the level of “white” noise in the
system, Equivalent RMS Input Noise can be expressed using actual measurement units.
EFFECTIVE RESOLUTION
Effective Resolution is an application dependant value determined by multiplying the
Equivalent RMS Input Noise specification by the square root of the measurement
bandwidth.
Example: An application with a 100Hz bandwidth using a KD-5100 with an Equivalent
RMS Input Noise level of 0.2nm/
√ Hz results in a system with an effective resolution of
0.2nm/ √ Hz x √ 100Hz or 2 nanometers.