Ability to closely follow a straight-line resistance temperature function.
In CT, the extent to which the CT number of a given material is exactly proportional to its density (in HU unit).
The characteristic of an instrument that is revealed by a linear change in reflected signal amplitude. The vertical linearity is determined by plotting the change in ratios of signal amplitude from two reflecting areas. The horizontal linearity is determined by plotting the distance the signal is displaced along the sweep against the change in material thickness.
The maximum departure of an instrument's actual response curve from the "best fit" straight line response. It applies only to instruments with more or less linear response, and is usually stated as a percentage of full scale range.
Linearity is a basic measurement of how well an ADC or DAC is performing. Linearity is typically measured by making the ADC or DAC attempt to generate a linearly increasing signal. The actual output is compared to the ideal of the output. The difference is a measure of the linearity. The smaller the number, the better. Linearity is typically specified as a range or percentage of LSBs (Least Significant Bits).
It is the measurement of the extent to which a certain response is directly proportional to the applied excitation.
A measure of how closely a graph of measurement result versus analyte concentration fits a straight line. Best stated as the range in which the measurement is linear within certain specified limits. Note that data may be 'transformed' mathematically, as in a plot of the logarithm of the measurement result versus the concentration. Note, too, that a mathematical definition will be more complex.
The closeness to which a curve approximates a straight line or the deviation of an instrument's response from a straight line.
The extent to which a measuring instrument's response is proportional to the measured quantity.
A general term referring to the accuracy of response of an audio component in terms of a particular measured parameter, such as frequency response. Load: Electrical resistance is often referred to as the load.
is the deviation from a nominal 'K' factor normally expressed as a percentage.
The maximum deviation of the calibration curve from a straight line so positioned as to minimize the maximum deviation.
A term that applies only to VCXO’s and TCVCXO’s. It describes the maximum frequency error in following a straight line curve fitted to the actual frequencies measured at different control voltages within the control voltage range. This error is measured in percent according to the maximum deviation from the curve as a percentage of the total tuning range (MIL-PRF-55310D, 4.8.31.5).
The measure of a device's transfer function relative to a perfect Y = mX straight-line response.
A measure of the performance of an ADC or DAC to convert signals with different amplitudes, to the same degree of accuracy.
An instrument or transducer's deviation in response from straight line values.
The maximum deviation of any calibration point, on a specified straight line, during any one calibration cycle.
The uniformity of the shift in frequency over voltage change, when pulling the frequency of a VCXO.
Ability of the multiplier to respond to an input ion current with a current at the output which varies linearly with the input.
The degree of conformity of the output of a system to a straight line match with the measured parameter
The response characteristics of a linear system remain constant with input level and/or excitation signal type. That is, if the response to input a is k·a, and the response to input b is k·b, then the response of a linear system to input (a + b) will be (k·a + k·b), independent of the function k. An example of a nonlinear system is one whose response is limited by mechanical stop, such as occurs when a bearing mount is loose.
The closeness of the calibration curve to a straight line. It is expressed as the maximum deviation of the calibration curve and the specified straight-line characteristic.
A linear system is one in which cause and effect are related to each other in a proportional way. For instance, if one pound makes a rubber band stretch twice its length; a two pound weight will make it stretch four times its length. For many systems, causality is curvilinear; a given cause will have an effect that is smaller with each additional doubling of it. For many systems, the addition of the nth doubling will cause it to transform into non-linearity. Nuclear fission is linear up to the point of a critical mass. Nonlinearity marks the onset of chaos. Nonlinearity: A pattern of behavior in which a change is out of proportion to the value of a driving force. There are three generic forms of nonlinear change which a researcher may chart. The simplest form is
For an attenuator, the variation from the best straight line of the attenuation versus control signal transfer function at center frequency, measured in dB or percentage of attenuation. For a VCO, the variation best straight line of the output frequency versus control signal transfer function, measured in per cent. For a system or component: the extent to which the output spectrum is identical to the input spectrum. A system that generates spurious signal is considered to be nonlinear.
The maximum deviation of any points from a straight line drawn as a "best fit" through the calibration points of an instrument with a linear response curve. Usually expressed as a percentage of full-scale range.
To calculate Pearson's coefficient of correlation to measure the level of association between 2 variables, it is necessary for the data to be related following a straight line. Thus a check for linearity is obtained by plotting a scatter diagram of the two variables.
The accuracy with which the output from any system follows changes in the amplitude of its input signal.
The linearity of a digital voltmeter is the inaccuracy in reading which results when reading of the instrument is plotted against the actual absolute voltage input, from zero to full scale. For a perfect DPM the function is a straight line. Linearity is the greatest deviation from a straight line expressed as a percentage of full scale.
A measure of departure from a straight line response in the relationship between two quantities, where the change in one quantity is directly proportional to a change in the other quantity.
The maximum deviation of the calibration curve (average of upscale and downscale readings) from a straight line positioned to pass through the upper and lower range values.
the deviation of the sensor output curve from a specified straight line. Linearity error is usually expressed as a percent of full scale output.
The degree to which the input of a signal is proportional to the output.
The closeness of a calibration curve to a specified straight line. Linearity is expressed as the maximum deviation of any calibration point from a specified straight line.
Describes the accuracy of a component's output signal compared to the input signal. A device whose output varies in direct proportion to the input is said to linear.
The tendency to follow a course in a fixed direction: (a) Amplitude linearity: distortion of which produces harmonic distortion and intermodulation; (b) Frequency linearity: referring to the straightness of a frequency response curve.
Analog voltage output from a displacement sensor increases in proportion to the distance. The relationship of analog output voltage to distance is ideally represented by a straight line. However, actual measurements deviate from this line. Linearity is the tolerance range in relation to the ideal line, and is indicated as a percentage of F.S. (Full Scale) Measurements obtained by digital signal processing are slightly different from actual displacement. In this case, linearity refers to the ratio of this difference to the measurement range.
How closely an instrument measures actual values of a variable through its effective range; a measure used to determine the accuracy of an instrument.
Deviation of the reading from the actual value within one revolution (360°).
The maximum deviation of the calibration curve from a straight line between zero and full scale, expressed as a percent of full scale output and measured on increasing measured only.
The relationship that exits between two quantities when a change in one of them produces a directly proportional change in the other. A trade group of frequency coordinators and associations serving private users and commercial operators.
1) Production at a constant quantity. 2) Use of resources at a level rate, typically measured daily or more frequently.
(Measurement and Inspection) Linearity actually refers to the maximum amount of nonlinearity in the output of the sensor. It is usually defined as the maximum deviation above or below the ideal output of the sensor. See figure, at right. It should be noted that linearity errors are repeatable errors and do not affect the sensor's ability to repeatably activate discrete outputs. Furthermore, since linearity errors are repeatable, they are potentially correctable within the host system. A linearization scheme in a host system could consist of a table of actual and ideal values that serves as table for interpolation.
Ideally an A-D or D-A converter converts the input or output range into equal steps. In practice the steps are not exactly equal. Linearity, or non-linearity, is a measure of how close the steps approach equality.