Meaningful Meanings

 

Register
A storage device with a specific capacity, such as a bit, byte or word.

Relay (Mechanical)
An electromechanical device that completes or interrupts a circuit by physically moving electrical contacts into contact with each other.

Relay (Solid State)
A solid state switching device which completes or interrupts a circuit electrically with no moving parts.

Remote
Not hard-wired; communicating via switched lines, such as telephone lines. Usually refers to peripheral devices that are located at a site away from the CPU.

Repeatability
The ability of a transducer to reproduce output readings when the same measured value is applied to it consecutively, under the same conditions, and in the same direction. Repeatability is expressed as the maximum difference between output readings.

Reserved Word
A word that has a defined function in the language, and cannot be used as a variable name.

Residual (Final) Unbalance
Residual unbalance is that unbalance of any kind that remains after balancing.

Resistance Ratio Characteristic
For thermistors, the ratio of the resistance of the thermistor at 25°C to the resistance at 125°C.

Resistance Temperature Characteristic
A relationship between a thermistor’s resistance and the temperature.

Resistance
The resistance to the flow of electric current measured in ohms (1/2) for a conductor. Resistance is a function of diameter, resistivity (an intrinsic property of the material) and length.

Resolution
The smallest detectable increment of measurement. Resolution is usually limited by the number of bits used to quantize the input signal. For example, a 12-bit A/D can resolve to one part in 4096 (2 to the 12th power equals 4096).

Resonant Frequency
The measurand frequency at which a transducer responds with maximum amplitude.

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