Glossary of EE Terms
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HART
The HART Communications Protocol (Highway Addressable Remote Transducer Protocol) is used to communicate diagnostic information to and from field instruments, actuators and valves over legacy 4 mA to 20 mA analog loop-wiring to industrial controllers. In this way, extra industrial wiring, which is expensive, does not have to be resourced and maintained.
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Heading
Heading is the direction toward which an object in motion is pointing.
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Heterodyne
A process by which two signals are mixed for the purpose of cross-frequency translation. Integral Nonlinearity (INL) This term describes the absolute accuracy of a converter. It is the maximum deviation, at any point in the transfer function, of the converter's output from its ideal value.
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Hold Time (tH)
The amount of time required for the digital inputs to remain static after a rising clock edge.
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