Terms that are on use on this site.
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| Term | Definition |
|---|---|
| A/D Converter (Also A/D or ADC) |
Short for analog-to-digital converter. Converts real-world analog signals into a digital format that can be processed by a computer. |
| Abnormal Failure |
Abnormal Failure: An artificially induced failure of a component, usually as a result of "abnormals" testing for regulatory agency safety compliance. |
| Absolute Move |
1) A move to a specified absolute position relative to a fixed zero position as a reference point.
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| Absolute Position |
1) Position referenced to a fixed zero position. |
| Absolute Pressure |
Gage pressure plus atmospheric pressure. |
| Absolute Pressure Transducer |
A transducer that has an internal reference chamber sealed at or close to 0 psia (full vacuum) and normally provides increasing output voltage for increases in pressure. |
| Absolute Zero |
Temperature at which thermal energy is at a minimum. Defined as 0 Kelvin, calculated to be -273.15 ?C or -459.67?F. |
| AC Linearity |
A dynamic measurement of how well an A/D performs. In an ideal A/D converter, a pure sine wave on the analog input appears at the digital output as a pure (sampled) sine wave. In the real world, however, spurious signals due to nonlinear distortion witin the A/D appear in the digital output. These anomalies are usually combinations of harmonics of the fundamental and intermodulation products, produced when the fundamental and its harmonics beat with the sampled frequency. |
| Acceleration |
The first derivative of velocity with respect to time. Units expressed in "g". |
| Accelerometer |
A transducer which converts mechanical motion into an electrical signal that is proportional to the acceleration value of the motion. |
| Access Protocol |
A defined set of procedures that function as an interface between a user and a network and enable the user to employ the services of that network. |
| Accuracy |
The combined error of nonlinearity, repeatability, and hysteresis expressed as a percent of full scale output. |
| Acquisition Time |
This term relates to sampling A/Ds which utilize a track/hold amplifier on the input to acquire and hold the analog input signal. Acquisitoin time is the time required by the T/H amplifier to settle to its final value after it is placed in the track module. |
| Actuator |
in a closed-loop control system, that part of the final control element that translates the control signal into action by the control device. |
| Address |
An identification (number, name, or label) that uniquely identifies a computer register, memory location, or storage device. |
Glossary 2.64 is technology by Guru PHP
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