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  2. Calibration - Wikipedia

    en.wikipedia.org/wiki/Calibration

    The formal definition of calibration by the International Bureau of Weights and Measures (BIPM) is the following: "Operation that, under specified conditions, in a first step, establishes a relation between the quantity values with measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties (of the calibrated instrument or ...

  3. Measurement system analysis - Wikipedia

    en.wikipedia.org/wiki/Measurement_system_analysis

    A measurement system analysis (MSA) is a thorough assessment of a measurement process, and typically includes a specially designed experiment that seeks to identify the components of variation in that measurement process. Just as processes that produce a product may vary, the process of obtaining measurements and data may also have variation ...

  4. Measurement microphone calibration - Wikipedia

    en.wikipedia.org/wiki/Measurement_microphone...

    A pistonphone is an acoustical calibrator (sound source) that uses a closed coupling volume to generate a precise sound pressure for the calibration of measurement microphones. The principle relies on a piston mechanically driven to move at a specified cyclic rate, pushing on a fixed volume of air to which the microphone under test is coupled.

  5. Multifunction tester - Wikipedia

    en.wikipedia.org/wiki/Multifunction_tester

    A multifunction tester or MFT is an electronic device used by electricians to test electrical circuits that use the "low" and "extra-low voltages" typically used by consumers in domestic, commercial and agricultural settings.

  6. List of ISO standards 1–1999 - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_standards_1–1999

    ISO 725:2009 ISO inch screw threads — Basic dimensions; ISO 726:1982 Metallic materials — Hardness test — Calibration of standardized blocks to be used for Brinell hardness testing machines [Withdrawn: replaced with ISO 6506-3]

  7. List of 7400-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_7400-series...

    8-bit multifunction register (combines features of x374, x377, x273, x534 ICs) three-state 24 SN74LS380: 74x381 1 4-bit arithmetic logic unit/function generator, generate and propagate outputs 20 SN74LS381A: 74x382 1 4-bit arithmetic logic unit/function generator, ripple carry and overflow outputs 20 SN74LS382: 74x383 1 8-bit register open ...

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